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104 results for React Js Ui Developer jobs

Frontend Developer

Hudson, MA
onsite
Permanent
100000 - 120000 USD / Yearly
Front-End Developer (Vue.js / React / Angular + C#)We’re looking for a Front-End Developer who enjoys building modern, user-friendly applications and working across a full-stack environment. This role focuses primarily on front-end development using Vue.js, but we are equally open to candidates experienced with React or Angular, as long as they also bring strong C#/.NET skills to the table. About the RoleIn this position, you’ll work closely with product and backend teams to build interactive, high-performing web applications. You’ll contribute to UI development, API integration, and help shape the architectural direction of our front-end codebase. If you’re passionate about clean code, modern frameworks, and collaborating on end‑to‑end software solutions, this role is a great fit. Responsibilities<ul><li>Develop intuitive and responsive user interfaces using Vue.js, React, or Angular</li><li>Work hands-on with C#/.NET to integrate front-end features with backend services</li><li>Collaborate with designers, product managers, and backend engineers to deliver high‑quality features</li><li>Optimize components for performance, accessibility, and cross-browser compatibility</li><li>Consume and integrate RESTful APIs and backend services</li><li>Participate in code reviews, design discussions, and architectural planning</li><li>Troubleshoot and resolve application issues across the stack</li><li>Contribute to improving development processes, tooling, and frontend architecture</li></ul>
2026-03-27T00:00:00Z

Front-End / UI Developer

Atlanta, GA
onsite
Temporary
0 - 0 USD / Yearly
Front-End / UI Developer (Contract)Location: Atlanta, GA (Onsite 3 days/week) Duration: ContractSeeking a Front-End Developer to build and optimize digital experiences across web and campaign platforms.Key Responsibilities:<ul><li>Develop responsive web and UI components</li><li>Collaborate with designers and marketing teams</li><li>Optimize performance and usability</li><li>Ensure cross-browser compatibility</li></ul>
2026-03-27T00:00:00Z

Python Developer

Columbus, OH
onsite
Temporary
38 - 45 USD / Hourly
We are seeking a hands-on Python Software Developer with 2+ years of experience to support the development, maintenance, and enhancement of critical business applications. The ideal candidate has strong skills in Python scripting and SQL, understands application workflows, and is eager to learn new tools and technologies in a fast-paced environment.In this role, you will contribute to development efforts, troubleshoot production and testing issues, and collaborate closely with senior developers and business analysts to deliver high-quality technical solutions. The role supports both small-scale enhancements and larger enterprise initiatives while building technical depth and business-domain knowledge. Key Responsibilities:· Develop, maintain, and enhance internal and external applications with guidance from senior developers.· Write clean, efficient, and well-documented Python code.· Build, optimize, and troubleshoot SQL queries, joins, stored procedures, and data workflows.· Collaborate with developers, analysts, and business partners to translate business requirements into technical solutions.· Investigate, debug, and resolve functional, performance, and data-related application issues.· Support deployment activities, version updates, and routine operational tasks.· Create and maintain technical documentation, including diagrams, process flows, and configuration details.· Participate in code reviews and follow established coding, testing, and documentation best practices.· Contribute to implementation plans and assist during release activities.· Participate in the team’s on-call rotation.· Attend team meetings and Agile ceremonies, contributing to continuous improvement efforts.
2026-04-17T00:00:00Z

UX/UI Designer

West Hollywood, CA
onsite
Contract / Temporary to Hire
66.5 - 77 USD / Hourly
We are looking for a skilled UX/UI Designer to join our team in Los Angeles, California. In this Contract to permanent position, you will play a key role in designing user-focused interfaces for complex, data-driven applications. This role offers an exciting opportunity to lead design efforts from concept to delivery while collaborating with stakeholders and engineering teams. Responsibilities:• Lead the end-to-end design process for enterprise applications, including user research, wireframing, prototyping, and creating high-fidelity mockups using Figma.• Translate ambiguous or incomplete requirements into actionable design briefs and facilitate alignment among stakeholders.• Design intuitive interfaces for dashboards, analytics views, and workflows, ensuring usability for large datasets through pagination, filtering, and sorting.• Develop functional prototypes to validate ideas early in the design process, utilizing Figma and AI tools.• Maintain attention to detail by addressing edge cases, error states, and loading scenarios, ensuring designs are production-ready.• Architect and manage a scalable design system in Figma, complete with components, tokens, and thorough documentation.• Integrate AI tools into the design workflow to enhance efficiency and explore innovative solutions for AI-native features.• Conduct user research and usability testing to gather insights and inform design decisions.• Collaborate closely with engineering teams to ensure seamless design handoff and implementation, addressing design drift proactively.
2026-04-15T00:00:00Z

Front-End Developer

Anaheim, CA
onsite
Temporary
75 - 80 USD / Hourly
We are looking for a skilled Senior Front-End Developer to craft cutting-edge, scalable user experiences while contributing to a dynamic enterprise application environment. This role emphasizes a strong foundation in front-end engineering, with the ability to leverage AI-powered tools to enhance productivity and efficiency. As part of a long-term contract, you will play a pivotal role in shaping user interfaces and supporting back-end systems when needed, ensuring seamless integration across platforms. Responsibilities: • Design and implement responsive, high-quality user interfaces using modern frameworks such as React and Angular. • Utilize AI-powered tools like GitHub Copilot and Cursor to accelerate development, refactor code, and create automated tests. • Collaborate with UX/UI designers to transform prototypes and design systems into fully functional, high-quality interfaces. • Establish and maintain reusable UI components and front-end architecture standards to enhance development consistency and efficiency. • Ensure all AI-generated code is thoroughly reviewed for accuracy, security, and maintainability before deployment. • Troubleshoot and resolve front-end issues, optimizing performance and user experience across devices. • Support back-end services and APIs as needed, leveraging AI tools to bridge any knowledge gaps in frameworks or languages. • Implement and consume RESTful APIs on the front-end, ensuring proper error handling, caching, and performance optimization. • Apply effective prompt engineering techniques to extract reliable outputs from AI tools, iterating as necessary. • Stay updated on the latest trends in front-end development and AI-assisted engineering to drive innovation.
2026-04-17T00:00:00Z

Senior Front End Developer

Woodland Hills, CA
onsite
Permanent
140000 - 160000 USD / Yearly
We are looking for a skilled Sr Front End Developer to join our team in Los Angeles, California. In this role, you will collaborate closely with the marketing technology team to create functional and visually appealing web applications. Your expertise in modern front-end technologies and frameworks will be essential in delivering high-quality user experiences. Responsibilities:• Develop and maintain responsive and efficient web applications using React.js, Redux, and JavaScript/TypeScript.• Collaborate with the MarTech team to implement functional features that align with business requirements.• Optimize web performance and ensure compatibility across various browsers and devices.• Utilize Figma or comparable design tools to translate UI/UX designs into functional code.• Leverage RESTful APIs to integrate front-end applications with back-end systems.• Implement web accessibility standards to ensure usability for all users.• Write and maintain test cases using frameworks such as Jest and React Testing Library.• Employ Git for version control and manage collaborative codebases on platforms like GitHub or GitLab.• Work with front-end frameworks, such as Bootstrap, to enhance and streamline development processes.• Bonus: Assist with Martech platforms like Adobe Target and Adobe Journey Optimizer when required.
2026-04-03T00:00:00Z

Web Developer

Durham, NC
onsite
Permanent
95000 - 115000 USD / Yearly
We are looking for a skilled Web Developer to join our innovative team in Morrisville, North Carolina. In this role, you will design and build high-quality web solutions, leveraging your technical expertise to deliver exceptional user experiences. This is an exciting opportunity to contribute to cutting-edge projects while working in a dynamic, collaborative environment. Responsibilities:• Develop and implement responsive websites using modern web development languages and frameworks.• Collaborate with designers and stakeholders to ensure seamless integration of visual and functional elements.• Optimize website performance, ensuring fast load times and efficient functionality.• Maintain and update existing websites to reflect current standards and technologies.• Troubleshoot and resolve technical issues related to web applications.• Create and manage databases and backend services to support web functionality.• Participate in code reviews to maintain high-quality standards and identify areas for improvement.• Stay updated on emerging web technologies and integrate them into development practices.• Work with cross-functional teams to align project goals and deliverables.• Ensure web solutions are accessible and compliant with industry standards.
2026-04-16T00:00:00Z

Web Developer

Atlanta, GA
onsite
Permanent
0 - 0 USD / Yearly
We are seeking a Senior Web Developer to support a client based in Metro Atlanta. This role will focus on designing, building, and maintaining modern web applications while working closely with client stakeholders and internal teams to deliver high-quality solutions. Key Responsibilities Design, develop, and maintain web applications and services Build responsive, user-friendly front-end interfaces Develop and integrate RESTful APIs and backend services Collaborate directly with client stakeholders to gather requirements and deliver solutions Optimize applications for performance, scalability, and reliability Conduct code reviews and mentor entry level developers Troubleshoot and resolve technical issues across the stack
2026-03-20T00:00:00Z

Web Developer

Wilmington, DE
onsite
Permanent
100000 - 125000 USD / Yearly
We are looking for an experienced Web Developer to join our team in Wilmington, Delaware. The ideal candidate will have a strong background in Python and React, along with a passion for creating scalable and efficient web applications. This role involves close collaboration with cross-functional teams to design, develop, and maintain high-quality digital solutions. Responsibilities: • Design and develop web applications using Python frameworks such as Django, Flask, or FastAPI. • Create responsive and dynamic user interfaces with React, ensuring seamless user experiences. • Optimize web applications for performance, scalability, and security. • Write clear, maintainable, and well-documented code to ensure long-term usability. • Diagnose and resolve technical issues, including debugging and upgrading existing systems. • Utilize relational and NoSQL databases such as PostgreSQL, MySQL, or MongoDB for data management. • Implement secure authentication, authorization, and data protection protocols. • Collaborate with team members to integrate APIs and other third-party services. • Stay updated on emerging web technologies and incorporate them into projects as needed. • Participate in code reviews to maintain high development standards.
2026-03-26T00:00:00Z

Web Developer

Bellevue, WA
remote
Temporary
65 - 68 USD / Hourly
Robert Half is searching for a Full Stack Developer who can support a Financial Services company based in Seattle, WA. The position is fully remote and is a long-term contract with the potential to extend, based on performance. Apply today! Duration: through 2025 with the potential to extendLocation: 100% Remote<ul><li>The role requires travel to Bellevue, WA, occurring approximately twice annually.</li></ul>Schedule: Must be able to work 8:30 AM - 5:00 PM (Pacific Standard TIme)Pay: $60-68/hourly on W2 (Dependent on location) Job Responsibilities: <ul><li>Write efficient, reliable, maintainable, and defect-free code. Design and implement software to meet and exceed business objectives.</li><li>Participate and contribute to software development practices such as design spec and code review.</li><li>Collaborate with cross-functional teams to design and implement scalable and efficient cloud solutions.</li><li>Utilize automated CI/CD pipelines to deploy software packages in a DevOps environment.</li><li>Working knowledge and ability to use tools to assist with user analytics, logging, and monitoring.</li><li>Write and execute unit tests, integration tests, and performance tests.</li></ul>
2026-04-13T00:00:00Z

Web Developer

Hammond, LA
onsite
Permanent
50000 - 65000 USD / Yearly
We are looking for a skilled Front End Web Developer to join our team in Hammond, Louisiana. This role is perfect for someone who is passionate about creating and maintaining dynamic websites, with a strong focus on user experience and functionality. You will have the opportunity to work with modern web technologies and collaborate closely with a dedicated team of professionals. Responsibilities:• Develop, test, and maintain websites using modern web technologies such as JavaScript, HTML, and CSS.• Build and customize WordPress themes and plugins to meet specific project requirements.• Ensure optimal website performance and responsiveness across various devices and platforms.• Collaborate with designers and stakeholders to implement visually appealing and functional web designs.• Troubleshoot and resolve technical issues related to website functionality and performance.• Integrate third-party applications and tools to enhance website capabilities.• Write clean, efficient, and well-documented code to ensure maintainability.• Stay updated on the latest web development trends and technologies to continuously improve processes and outcomes.
2026-04-07T00:00:00Z

Full-Stack Web Developer

Richmond, VA
onsite
Temporary
50 - 55 USD / Hourly
About the RoleWe are seeking an experienced Web Developer to support a portfolio of web applications, including both modern and legacy systems. This role focuses on full lifecycle development—design, development, enhancement, and deployment of high-quality applications.You’ll play a key role in maintaining and modernizing critical systems, while supporting integrations with new platforms.Key Responsibilities<ul><li>Design, develop, and deploy scalable web applications</li><li>Implement new features, enhancements, and bug fixes</li><li>Maintain and improve legacy systems while supporting modernization efforts</li><li>Develop and integrate RESTful APIs and backend services</li><li>Conduct unit testing to ensure code quality and reliability</li><li>Collaborate with Business Systems Analysts, QA teams, and other IT stakeholders</li><li>Participate in technical design reviews and contribute to solution architecture</li><li>Ensure applications meet functional, performance, and security requirements</li></ul>Scope of Work<ul><li>Support web application ecosystem (legacy + modern platforms)</li><li>Modify, enhance, and maintain existing applications</li><li>Build integrations between legacy systems and new platforms</li><li>Develop front-end solutions using Angular (or React)</li><li>Implement backend services using Java and REST APIs</li><li>Optimize database queries and improve system performance</li><li>Ensure smooth transition and integration with new system architecture</li></ul>
2026-04-08T00:00:00Z

Full Stack Web Developer

Addison, IL
onsite
Permanent
95000 - 100000 USD / Yearly
We are looking for a skilled Web Developer to join our team in Addison, Illinois. In this role, you will design, develop, and maintain web applications, ensuring optimal functionality and user experience. This position offers the opportunity to work on dynamic projects that blend front-end and back-end development. Responsibilities: • Develop and maintain web applications using C#, ASP.NET, and VB to meet business needs. • Create responsive and visually appealing user interfaces using JavaScript, HTML, CSS, and Bootstrap. • Collaborate with cross-functional teams to define requirements and deliver high-quality solutions. • Optimize application performance and troubleshoot issues to ensure smooth functionality. • Implement database solutions and manage Microsoft SQL Server to support application data needs. • Utilize Visual Studio for coding, debugging, and deploying software applications. • Ensure code quality and maintainability by following best practices and standards. • Participate in testing and quality assurance processes to ensure robust and reliable applications. • Provide technical support and resolve issues related to web applications. • Stay updated on industry trends and emerging technologies to continually enhance development processes.
2026-03-24T00:00:00Z

Junior Applications Developer (.NET and Angular (or React))

Morris Plains, NJ
onsite
Permanent
60000 - 80000 USD / Yearly
This role will contribute to the development and maintenance of software applications, including learning enterprise development practices, writing code, and participating in Agile ceremonies and testing under the supervision ofsenior developers. Further duties & responsibilities are listed below. <ul><li>Develop and modify software modules based on requirements.</li><li>Participate in Agile ceremonies and collaborate with team members.</li><li>Conduct unit testing and assist in bug resolution.</li><li>Learn and apply development standards and best practices.</li></ul>
2026-04-16T00:00:00Z

.Net Developer

Houston, TX
onsite
Temporary
0 - 0 USD / Yearly
We are looking for a .Net Core Developer with a passion for software development and a proven track record of delivering robust, high-quality software. In this role, you will be responsible for developing scalable, maintainable, and high-performing applications using the .NET Core framework.Key Responsibilities:<ol><li>Developing robust and secure web applications using ASP.NET Core, Blazor + WebAssembly.</li><li>Designing, building, and maintaining efficient, reusable, and reliable C# code.</li><li>Managing database operations with Entity Framework Core + SQL Server</li><li>Implementing user interfaces with Telerik controls for .Net Core and Blazor.</li><li>Following Clean Architecture principles and CQRS pattern for development.</li><li>Using Object-Oriented Design principles for application design.</li><li>Developing and maintaining Web API interfaces.</li><li>Implementing continuous integration and deployment (CI/CD) processes using Azure DevOps.</li><li>Enhancing code quality and performance using SonarQube.</li><li>Participating in all aspects of the project lifecycle, including design, development, documentation, testing, and operations.</li></ol>
2026-04-03T00:00:00Z

.NET Developer

Richmond, VA
onsite
Temporary
45 - 50 USD / Hourly
OverviewWe are seeking an experienced Programmer Analyst 3 (.NET Developer). This role involves developing, maintaining, and enhancing multiple enterprise-level .NET applications in a collaborative, fast-paced environment.Important: This is a local, onsite role. Candidates must be willing to attend in-person interviews and work onsite as required for meetings, project planning, and collaboration.Key Responsibilities<ul><li>Design, develop, maintain, and enhance ASP.NET/MVC and .NET Core applications</li><li>Build and support web applications using C#, JavaScript, jQuery, and HTML</li><li>Develop and optimize SQL Server databases, including design and programming</li><li>Collaborate with cross-functional teams to deliver scalable solutions</li><li>Participate in project planning sessions and onsite meetings</li><li>Produce clear technical documentation and maintain coding standards</li></ul>
2026-04-08T00:00:00Z

User Experience (UX) Designer

Camas, WA
remote
Temporary
60 - 70 USD / Hourly
A growing financial firm is looking for a talented User Experience (UX) Designer to join their team on a long-term contract basis. In this role, you will focus on creating and optimizing landing pages that drive user engagement and improve conversion rates across multiple global markets. This position offers the opportunity to collaborate with a dynamic team, leveraging your design expertise to deliver user-centric solutions that resonate with diverse audiences. This is a remote role, 20 to 30 hours per week. Title Title: UX DesignerContract Type: Contract Duration: 6 months with potential to extendOpportunity for hire: Potentially Location: 100% remote Schedule: M-F, core hours 9am-3pm PST, will work 20-30 hours per week depending on work volumePay Range: $60-70 per hourSoftware Required: Figma, Auto Layout, FramerOnboarding requirements: Figma assessment Responsibilities:• Design and enhance landing pages via Figma to maximize user engagement and conversion rates.• Respond to tickets in Jira and collaborate with Project Managers on requested changes for landing pages.• Collaborate with global teams to ensure designs are tailored to specific cultural and regional preferences.• Update and iterate on existing landing pages using performance metrics and testing insights.• Utilize Figma to maintain and expand a cohesive design system for landing page templates.• Ensure multilingual accessibility by adapting content for various languages, such as Japanese and Arabic.• Regularly review landing page performance data to identify opportunities for improvement.• Incorporate direct response marketing strategies into design work to drive measurable results.• Propose and implement innovative ideas to improve user experience and functionality.• Participate in weekly team meetings to align on project goals and updates.
2026-04-16T00:00:00Z

Full Stack Developer

Austin, TX
onsite
Contract / Temporary to Hire
65 - 80 USD / Hourly
Full Stack DeveloperOn-site | Austin, TX | Contract-to-Hire Our client is building a modern, AI‑enabled software platform and is seeking a Full Stack Developer who thrives in start-up environments. This is a hands-on role focused on rapidly turning ideas into production-ready software. You will be responsible for building new systems from the ground up, rapidly prototyping, and shipping features at high velocity. You’ll work across frontend, backend, and AI-powered systems with strong ownership and minimal direction. Success in this role requires urgency, independence, and a solutions-oriented mindset. Responsibilities:<ul><li>Design and implement scalable systems while maintaining development speed</li><li>Own projects end-to-end, from concept through deployment</li><li>Work across the stack, including frontend, backend, and AI/ML systems</li><li>Rapidly prototype, test, iterate, and refine new product ideas</li><li>Partner closely with leadership to translate business needs into working software</li><li>Identify and eliminate bottlenecks to improve engineering velocity</li><li>Balance high engineering standards with pragmatism and delivery speed</li><li>Continuously evaluate and apply new technologies to accelerate development</li></ul>
2026-04-17T00:00:00Z

JIRA Developer

Houston, TX
onsite
Temporary
0 - 0 USD / Yearly
<ul><li>Responsible for building, automating, and maintaining workflows within Jira to support reporting and operational efficiency</li><li>Develop and manage custom reporting dashboards sourced from Jira data, with a focus on actionable insights</li><li>Create performance reporting by agent, including productivity, throughput, and workflow efficiency metrics</li><li>Experience integrating and reporting from Azure DevOps, including: </li><li>Building custom reports from Azure DevOps data</li><li>Feeding Azure DevOps data into bespoke dashboards (non‑out‑of‑the‑box solutions)</li><li>Design and maintain end-to-end workflow automation, including pipelines that support reporting and dashboard updates</li><li>Dashboards will be maintained through Jira workflows, not static/manual updates</li><li>Role owns the build and long-term maintenance of workflows, reporting pipelines, and dashboards</li><li>Reporting requests come directly from stakeholders, requiring quick turnaround and ongoing enhancements</li><li>Strong collaboration with business users to translate reporting needs into scalable Jira and Azure DevOps solution</li></ul>
2026-04-03T00:00:00Z

Jira Developer

Houston, TX
onsite
Temporary
0 - 0 USD / Yearly
Key Responsibilities<ul><li>Design, build, automate, and maintain Jira workflows to support operational efficiency and enterprise reporting needs.</li><li>Develop and manage custom, dynamic dashboards sourced from Jira data, focused on delivering actionable insights—not static or manual updates.</li><li>Create and maintain performance reporting by agent, including productivity, throughput, and workflow efficiency metrics.</li><li>Integrate Azure DevOps data into customized reporting solutions, including:</li><li>Building custom reports directly from Azure DevOps data</li><li>Feeding Azure DevOps data into bespoke dashboards outside of standard, out-of-the-box configurations</li><li>Design and maintain end-to-end workflow automation and reporting pipelines that power dashboard updates and analytics.</li><li>Own the full lifecycle of workflows, reporting pipelines, and dashboards, including enhancements, optimization, and long-term support.</li><li>Respond directly to reporting requests from stakeholders, delivering quick turnarounds while ensuring scalability and sustainability.</li><li>Collaborate closely with business users to translate reporting and operational needs into effective Jira and Azure DevOps solutions</li></ul>
2026-04-03T00:00:00Z

Mobile Developer

Austin, TX
onsite
Permanent
90000 - 140000 USD / Yearly
We are looking for a highly skilled Mobile Developer to create and enhance mobile applications designed for enterprise healthcare solutions. This role involves collaborating with cross-functional teams to deliver secure, high-performing mobile apps that integrate with AI-driven platforms and cater to healthcare providers, payers, and life sciences organizations. If you are passionate about leveraging technology to improve healthcare outcomes, we encourage you to apply. Responsibilities: • Design and develop native or cross-platform mobile applications for iOS and/or Android, tailored to a B2B SaaS platform. • Collaborate with product managers and UX designers to transform business requirements into user-friendly mobile solutions. • Integrate mobile apps with cloud-based APIs, AI services, and backend systems to ensure seamless functionality. • Implement advanced performance, security, and reliability measures to meet the demands of healthcare-focused environments. • Ensure compliance with data privacy and security standards relevant to the healthcare industry. • Write clean, efficient, and well-documented code, and participate actively in code reviews to maintain high-quality standards. • Monitor, troubleshoot, and optimize mobile applications in live production environments. • Stay updated on the latest trends, tools, and frameworks in mobile development to continuously enhance application performance. • Contribute to the development of CI/CD pipelines for streamlined deployment processes.
2026-04-03T00:00:00Z

C# Developer

Richmond, VA
onsite
Temporary
50 - 55 USD / Hourly
Position OverviewWe are seeking an experienced C# Developer / Programmer Analyst to design, develop, and maintain enterprise-level .NET applications. This role is ideal for a developer who thrives in structured, data-intensive environments and has experience working with large, menu-driven business systems such as claims processing, payroll, or insurance platforms.This is a hands-on development role focused on building and maintaining internal applications—no API development is involved.WKey Responsibilities<ul><li>Develop, enhance, and maintain applications using C# and .NET (3.1 or higher)</li><li>Design and build menu-driven business applications with complex data workflows</li><li>Write, test, and debug clean, efficient, and maintainable code (no API integrations)</li><li>Develop and manage SQL Server databases, including T-SQL queries and procedures</li><li>Build and maintain user interfaces using Angular</li><li>Create and manage application screens, reports, and transaction-based systems (add/update/delete functions)</li><li>Participate in system design, planning sessions, and technical discussions</li><li>Troubleshoot and resolve application issues and performance bottlenecks</li><li>Collaborate with cross-functional teams and provide technical support to stakeholders</li><li>Report project progress, risks, and issues to leadership</li></ul>
2026-04-14T00:00:00Z

Software Developer (Python, Ruby, Javascript)

Monroe, NY
onsite
Permanent
110000 - 140000 USD / Yearly
About the Role:We are seeking a versatile and forward-thinking Full Stack Developer to join our dynamic team. The ideal candidate will be proficient across multiple programming languages and frameworks, with a strong foundation in AI integration, testing, and performance optimization. This role requires a developer who thrives in a fast-paced environment and is passionate about building secure, scalable, and innovative web applications. Key Responsibilities:<ul><li>Design, develop, and maintain full stack applications using Ruby, Ruby on Rails, Python, Django, HTML, CSS, and JavaScript.</li><li>Integrate AI frameworks, APIs, and plugins to enhance application capabilities.</li><li>Conduct thorough debugging, unit testing, and regression testing to ensure code quality.</li><li>Ensure applications meet security and compliance standards, including US and EU regulations.</li><li>Implement and manage payment systems integration.</li><li>Perform load testing to validate performance under high traffic conditions.</li><li>Collaborate with cross-functional teams to define and implement web architecture (preferred but not required).</li></ul>
2026-03-27T00:00:00Z

Back End Developer

Appleton, WI
onsite
Permanent
80000 - 120000 USD / Yearly
A rapidly growing software team is looking for a Backend Developer to help expand and scale a complex operational platform used by organizations with large, distributed locations. This role focuses on the core systems that power the application, including application logic, data architecture, integrations, and performance optimization. You will work closely with a small, collaborative engineering team to enhance an established platform while helping design new capabilities as the product continues to expand into new industries and use cases. This is an opportunity to have meaningful input on architecture and help shape how the system evolves over time. What You’ll Work OnThe platform supports operational workflows such as asset tracking, service and maintenance management, inventory monitoring, and automated vendor ordering. As the platform grows and new organizations adopt it, the engineering team continuously builds new features, expands integrations, and improves system scalability. Key Responsibilities<ul><li>Design and build backend functionality using Ruby on Rails</li><li>Develop and maintain application logic within the model, controller, and database layers</li><li>Create and maintain RESTful APIs used by internal and external systems</li><li>Optimize database queries and data structures for performance and reliability</li><li>Implement integrations with third-party systems and vendor platforms</li><li>Support the scalability and reliability of a large operational application</li><li>Collaborate with engineers to refine architecture and improve system design</li><li>Participate in code reviews and contribute to engineering standards</li><li>Troubleshoot and resolve complex backend and data-related issues </li></ul>
2026-04-10T00:00:00Z

Back End Developer

Boulder, CO
remote
Temporary
59.375 - 68.75 USD / Hourly
We are looking for an experienced Back End Developer to join our team on a 5-6 month contract basis. This position involves working with advanced technologies to support data migration and back-end integration efforts. The role is fully remote and requires a highly skilled individual with strong attention to detail, capable of leading Java-related development tasks while collaborating with teams using C++ and Python. Responsibilities:• Extract, clean, and transform data from existing Java-based systems to support migration processes.• Lead the integration of data into a new Fusion application using C++ and Python.• Act as the subject-matter expert for Java development and oversee all Java-related decisions.• Collaborate closely with engineering teams to ensure smooth data flow and system interoperability.• Use GitLab for version control and continuous integration workflows.• Manage tasks and sprints effectively within Jira to meet project deadlines.• Deliver reliable and high-quality back-end development solutions tailored to project requirements.• Ensure compliance with security protocols and government contracting standards.
2026-04-10T00:00:00Z