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4 results for Back End Developer in Libertyville, IL
- Wheeling, IL
- onsite
- Permanent / Full Time
- 120000 - 140000 USD / Yearly
- We are looking for a Back End Developer to join a collaborative technology team in Wheeling, Illinois. This role focuses on building and maintaining reliable server-side solutions that support business applications and improve overall system performance. The ideal candidate brings strong development fundamentals, works well across teams, and can contribute to scalable web-based platforms in a fast-paced environment.<br><br>Responsibilities:<br>• Design, build, and maintain backend services that support web applications and internal platforms<br>• Develop efficient server-side logic and integrate application functionality with databases and external services<br>• Partner with front-end developers to ensure smooth communication between user interfaces and backend systems<br>• Write clean, maintainable code and participate in code reviews to support quality and consistency<br>• Troubleshoot application issues, identify root causes, and implement durable fixes<br>• Optimize performance, reliability, and scalability across backend components and APIs<br>• Contribute to technical planning, documentation, and ongoing improvements to development practices
- 2026-10-07T00:00:00Z
- Chicago, IL
- remote
- Permanent / Full Time
- 135000 - 155000 USD / Yearly
- <p>We are seeking a Senior Software Engineer with deep experience in backend Java development and Android application engineering. This role will focus on designing, building, and maintaining scalable backend services while also contributing to Android mobile applications. The ideal candidate brings strong technical expertise, a collaborative mindset, and a passion for delivering reliable, high-quality software.</p><p><br></p><p><strong>Key Responsibilities</strong></p><ul><li>Design, develop, test, and maintain backend services using Java and Spring Boot.</li><li>Build and enhance Android applications with a focus on performance, usability, and maintainability.</li><li>Collaborate with product, business, and engineering stakeholders to define technical requirements and deliver solutions.</li><li>Develop RESTful APIs and integrations that support mobile and web-based applications.</li><li>Write clean, efficient, and well-documented code following established coding standards.</li><li>Participate in architecture discussions, technical design reviews, and sprint planning sessions.</li><li>Perform code reviews and contribute to best practices for software quality, scalability, and security.</li><li>Troubleshoot and resolve application, database, and system performance issues.</li><li>Support deployment activities, testing efforts, and ongoing production maintenance.</li><li>Contribute to continuous improvement initiatives across development workflows, tooling, and engineering processes.</li></ul>
- 2026-09-22T00:00:00Z
- Chicago, IL
- remote
- Permanent / Full Time
- 225000 - 300000 USD / Yearly
- We are looking for a Senior Software Engineer to create modern software solutions that connect data, systems, and business workflows into effective digital products. This role is based in Chicago, Illinois, and offers the opportunity to work closely with engineers, product leaders, and client stakeholders to deliver dependable, user-centered platforms. The ideal candidate enjoys building new capabilities from the ground up, solving unfamiliar technical challenges, and improving systems through thoughtful engineering practices.<br><br>Responsibilities:<br>• Build and release full-stack software products, including backend services, APIs, user interfaces, dashboards, and data-driven features that support operational decision-making.<br>• Connect external and internal platforms by developing integrations, data flows, and synchronization processes across business and analytical systems.<br>• Create automated workflows that streamline coordination between users, software applications, and operational processes.<br>• Collaborate with product and engineering partners to define technical approaches, strengthen delivery methods, and improve long-term solution quality.<br>• Engage directly with users and client stakeholders to gather requirements, validate concepts, and refine functionality based on practical feedback.<br>• Monitor live applications, troubleshoot issues across the technology stack, and enhance system stability and performance in production environments.<br>• Produce technical documentation, architectural guidance, and transition materials that enable client teams to support and expand delivered solutions.<br>• Establish reusable development patterns, deployment methods, and engineering assets that improve efficiency across future engagements.
- 2026-10-21T00:00:00Z
- Chicago, IL
- remote
- Permanent / Full Time
- 130000 - 160000 USD / Yearly
- <p>We are seeking a <strong>Senior Software Engineer</strong> to join a high-impact engineering team focused on building and enhancing backend services that support dispute management, workflow automation, and risk mitigation capabilities within a SaaS platform.</p><p>This role will contribute to key initiatives such as platform modernization, decisioning workflows, alerting functionality, and scalable service delivery. In addition to strong technical depth, this position requires sound judgment, adaptability, and the ability to work effectively in a fast-paced, cross-functional environment. The ideal candidate is also highly proficient with AI-assisted development tools, including Claude Code, to accelerate delivery while maintaining software quality.</p><p>Key Responsibilities</p><ul><li>Design, develop, and maintain Java-based backend services and REST APIs.</li><li>Build and improve alerting and configurable notification capabilities.</li><li>Partner on technical initiatives including database upgrades, integrations, scalability improvements, and containerized deployments.</li><li>Participate in release cycles, iterative feature delivery, and continuous improvement efforts.</li><li>Provide technical leadership through code reviews, mentorship, and active participation in planning and requirements discussions.</li><li>Manage multiple concurrent initiatives and shifting priorities while maintaining quality and delivery velocity.</li></ul>
- 2026-10-14T00:00:00Z