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13 results for Senior Net Software Developer in Reston, VA

Senior C# Developer
  • Washington, DC
  • remote
  • Temporary
  • 65.00 - 70.00 USD / Hourly
  • <p>We are seeking a Senior C# / .NET Developer to support full‑lifecycle development of custom enterprise applications in a mission‑critical, highly visible environment. This role is ideal for a seasoned developer who is customer‑focused, self‑directed, and comfortable working onsite in a collaborative setting.</p><p>You will work closely with program leadership, business analysts, and engineering teams to translate business and mission requirements into high‑quality technical solutions. Strong communication skills and the ability to operate with limited supervision are essential.</p><p><br></p><p>Key Responsibilities</p><ul><li>Design, develop, and test high‑quality applications using C# and the .NET / .NET Core ecosystem</li><li>Support the full software development lifecycle, from requirements through deployment and operational support</li><li>Collaborate with program managers, business analysts, and engineers to translate requirements into technical solutions</li><li>Lead or contribute to architecture and technical design decisions</li><li>Troubleshoot, debug, and optimize application performance</li><li>Provide operational support and monitoring for deployed applications</li><li>Develop and maintain technical and system documentation</li><li>Participate in Agile development processes and ceremonies</li><li>Interface directly with customers to understand needs and ensure timely, effective delivery</li></ul>
  • 2026-02-06T20:23:41Z
Software Developer
  • Washington, DC
  • onsite
  • Contract / Temporary to Hire
  • 45.00 - 80.00 USD / Hourly
  • <p>We are seeking a Full Stack Engineer to design, build, and maintain scalable web applications across the full technology stack. In this role, you will work closely with product, design, and engineering teams to deliver high‑quality features, improve system performance, and ensure seamless user experiences. The ideal candidate is comfortable working across both front‑end and back‑end technologies, modern cloud environments, APIs, and databases.</p><p><strong>Responsibilities</strong></p><ul><li>Develop, test, and deploy full‑stack applications using modern front‑end and back‑end frameworks.</li><li>Build and maintain RESTful APIs and integration services.</li><li>Implement responsive, user-friendly UI components and front-end features.</li><li>Design and optimize database schemas, queries, and data models.</li><li>Work with cloud platforms (AWS, Azure, or GCP) to deploy and scale services.</li><li>Collaborate with product and design teams to translate requirements into technical solutions.</li><li>Ensure code quality through reviews, testing, and best practices.</li><li>Troubleshoot issues, improve performance, and enhance application reliability.</li></ul><p><br></p>
  • 2026-02-26T16:44:05Z
Software Engineer
  • Washington, DC
  • remote
  • Temporary
  • 50.00 - 65.00 USD / Hourly
  • <p>Job Title: Software Engineer (Microsoft Stack / .NET)</p><p><strong>Location:</strong> Washington, DC </p><p><strong>Company:</strong> Robert Half </p><p><strong>Tech Focus:</strong> .NET 10/11, Azure, Blazor, and AI-Integration</p><p><br></p><p>Role Overview</p><p>You will be responsible for designing and developing the next generation of enterprise applications that power the District’s most critical industries. In 2026, our "Microsoft Stack" isn't just about the backend; it's a full-stack journey using <strong>Blazor</strong> for interactive UIs, <strong>.NET Aspire</strong> for cloud-ready distribution, and <strong>Azure OpenAI</strong> to build intelligent features directly into the business workflow.</p><p><br></p><p><br></p>
  • 2026-02-16T16:33:43Z
Software Engineer in Test (SDET) – Java (Backend)
  • Washington, DC
  • onsite
  • Temporary
  • 50.00 - 55.00 USD / Hourly
  • <p>Software Engineer in Test (SDET) – Java (Backend)</p><p><strong>Hybrid – Washington, DC </strong></p><p><br></p><p>Job Summary</p><p>We’re hiring a <strong>Software Engineer in Test (SDET)</strong> who can <strong>write automation code in Java</strong> and owns the <strong>full backend testing lifecycle</strong> for modern service-based systems. This role is <strong>100% backend</strong> (no UI/front-end testing) and focuses on validating <strong>microservices and APIs</strong> running in a containerized environment. You’ll work closely with engineering and product teams to identify risk early, build reliable automated coverage, and speak up when something isn’t ready.</p><p>Responsibilities</p><ul><li>Build and maintain <strong>Java-based automated tests</strong> for backend services and APIs.</li><li>Execute and improve the <strong>end-to-end testing process</strong> (test planning, test execution, defect validation, regression).</li><li>Test <strong>microservices</strong> and distributed systems, including service-to-service behavior and integration points.</li><li>Validate <strong>REST APIs</strong> and troubleshoot issues through logs, debugging, and structured investigation.</li><li>Support <strong>performance testing using Gatling</strong>; expand/maintain performance suites as needed.</li><li>Collaborate with engineers and stakeholders to <strong>raise concerns</strong>, communicate risk, and drive quality decisions.</li><li>Work with internal tooling used for automation and testing (no required external framework experience—strong fundamentals matter most).</li><li>Contribute to quality improvements across deployments and releases in <strong>Kubernetes</strong> environments.</li></ul>
  • 2026-02-16T22:04:32Z
Senior Solutions Architect
  • Arlington, VA
  • remote
  • Permanent
  • 140000.00 - 150000.00 USD / Yearly
  • We are looking for an experienced Senior Solutions Architect to join our team in Arlington, Virginia. In this role, you will play a key part in designing and implementing enterprise-level solutions, with a focus on Salesforce architecture and integration strategies. This position requires a deep understanding of software development principles and the ability to align technical solutions with organizational goals.<br><br>Responsibilities:<br>• Develop and refine enterprise and solution architecture strategies that align with organizational objectives.<br>• Create scalable roadmaps for Salesforce and integrated systems to support business and operational needs.<br>• Define and advocate for architecture principles that enhance DevSecOps practices, system reliability, and continuous delivery.<br>• Act as a subject matter expert for Salesforce architecture, configuration, and integration methodologies.<br>• Contribute to governance practices, security assessments, and compliance reviews for the platform.<br>• Manage and oversee release processes and deployment activities for Salesforce and connected systems.<br>• Collaborate with cross-functional teams to ensure seamless integration and functionality of software solutions.<br>• Provide technical guidance and mentorship to development teams on best practices and standards.<br>• Analyze and resolve complex technical challenges related to system architecture and integration.
  • 2026-02-26T17:14:05Z
DevOps Engineer
  • Washington, DC
  • remote
  • Temporary
  • 70.00 - 100.00 USD / Hourly
  • <p>Job Title: DevOps Engineer (Platform Specialist)</p><p><strong>Location:</strong> Washington, DC (Hybrid – 2 days onsite near K Street/Penn Quarter)</p><p><strong>Company:</strong> Robert Half </p><p><strong>Experience Level:</strong> Mid-to-Senior (4+ years)</p><p>The Mission</p><p>Your goal is to make software delivery invisible. You will design and maintain the Internal Developer Platform (IDP) that our engineering teams use to deploy applications. You aren't just a "support" person; you are a builder who treats "Infrastructure as Code" as a product. Your focus will be on transitioning from traditional CI/CD to <strong>autonomous, self-healing pipelines.</strong></p><p><br></p><p><br></p>
  • 2026-02-16T16:23:45Z
DevOps Engineer
  • Baltimore, MD
  • remote
  • Temporary
  • 70.00 - 100.00 USD / Hourly
  • <p>Job Title: DevOps Engineer (Platform Specialist)</p><p><strong>Location:</strong> Baltimore, MD (Hybrid)</p><p><strong>Company:</strong> Robert Half / Protiviti Managed Solutions</p><p><strong>Experience Level:</strong> Mid-to-Senior (4+ years)</p><p>The Mission</p><p>Your goal is to make software delivery invisible. You will design and maintain the Internal Developer Platform (IDP) that our engineering teams use to deploy applications. You aren't just a "support" person; you are a builder who treats "Infrastructure as Code" as a product. Your focus will be on transitioning from traditional CI/CD to <strong>autonomous, self-healing pipelines.</strong></p>
  • 2026-02-16T16:29:04Z
GoLang Developer IV
  • Washington, DC
  • onsite
  • Temporary
  • 78.00 - 83.00 USD / Hourly
  • <p>Position Overview</p><p>We are seeking a Golang Developer IV to lead technical initiatives, deliver high‑impact results, and contribute to architectural and platform‑level decisions. This senior‑level role requires deep expertise in Golang, distributed systems, security, Linux internals, and modern cloud‑native development. The ideal candidate is a self‑driven leader, capable of mentoring others, influencing design direction, and developing complex services within large‑scale distributed environments.</p><p>This role requires hands‑on coding, debugging, modernization, and proactive ownership of platform components. Experience with infrastructure tooling, security frameworks, and multi‑cloud environments is essential.</p><p><br></p><p>Key Responsibilities</p><p>Leadership & Engineering</p><ul><li>Lead engineering initiatives from concept to delivery</li><li>Drive technical decision‑making and mentor junior developers</li><li>Own end‑to‑end development of Golang‑based services and system components</li><li>Break down business requirements into small, actionable technical tasks</li><li>Set coding best practices, code‑review standards, and quality guidelines</li></ul><p>Core Development Responsibilities</p><ul><li>Develop new features and backend services in Golang</li><li>Debug, diagnose, and resolve complex software defects</li><li>Reverse‑engineer legacy codebases to evaluate and refactor functionality</li><li>Participate in design sessions, analyzing architectural tradeoffs and solution options</li><li>Maintain strong documentation across solutions, APIs, and workflows</li><li>Build high‑performance components for large‑scale distributed systems</li></ul>
  • 2026-02-17T16:38:41Z
Cloud Developer
  • Herndon, VA
  • onsite
  • Temporary
  • 55.41 - 64.16 USD / Hourly
  • We are looking for an experienced Cloud Developer to join our team in Herndon, Virginia. This is a Contract position where you will take on a leadership role in designing, implementing, and optimizing cloud-based solutions and DevSecOps practices. The ideal candidate will have a strong background in cloud technologies, CI/CD pipeline development, and infrastructure automation, with a focus on security and scalability.<br><br>Responsibilities:<br>• Lead the design and implementation of CI/CD pipelines using tools such as GitLab, GitHub, and Jenkins, ensuring integration of security and quality checks.<br>• Develop and maintain reusable infrastructure automation solutions using tools like Terraform and AWS CloudFormation.<br>• Oversee container orchestration efforts using Kubernetes and manage cloud-native services on AWS GovCloud.<br>• Establish and promote enterprise-level DevSecOps reference architectures and reusable pipeline templates.<br>• Integrate security controls, automated testing, and quality gates into all stages of the software development lifecycle.<br>• Guide platform engineering teams in creating sustainable, automated solutions for deployment and environment configurations.<br>• Ensure compliance with Zero Trust architecture principles, including identity, network, and data protection.<br>• Collaborate with cross-functional teams to implement cloud-based solutions that align with organizational goals.<br>• Provide technical leadership and mentorship to DevSecOps squads, fostering a culture of innovation and efficiency.<br>• Drive the adoption of state-of-the-art tools and methodologies to enhance system performance and security.
  • 2026-02-26T17:04:08Z
Data Engineer
  • Washington, DC
  • remote
  • Temporary
  • 60.00 - 75.00 USD / Hourly
  • <p>Since it’s 2026, the Data Engineering landscape in DC has shifted heavily toward <strong>Cloud-Native architectures</strong> and <strong>GenAI-ready pipelines</strong>. Robert Half typically recruits for both their internal corporate teams and their high-end consulting arm (Protiviti).</p><p>Here is a tailored job description based on current 2026 market standards and Robert Half’s specific hiring trends in the District.</p><p><br></p><p>Job Title: Data Engineer</p><p><strong>Location:</strong> Washington, DC (Hybrid – Downtown DC Office)</p><p><strong>Company:</strong> Robert Half </p><p><strong>Employment Type: </strong>Contract-to-Hire</p><p>Role Overview</p><p>As a Data Engineer at Robert Half, you will be the backbone of our data-driven decision-making process. You aren't just "moving data"; you are architecting the flow of information that powers our localized market analytics and global recruitment engines. In the DC market, this often involves handling high-compliance data environments and integrating cutting-edge AI frameworks into traditional ETL workflows.</p><p><br></p><p><br></p>
  • 2026-02-16T15:58:41Z
Database Developer
  • Ashburn, VA
  • onsite
  • Temporary
  • 30.07 - 34.82 USD / Hourly
  • We are looking for a skilled Database Developer to join our team in Somerset, New Jersey. In this long-term contract position, you will play a pivotal role in managing, analyzing, and presenting data to support business operations and decision-making. This role requires a blend of technical expertise and collaboration to ensure data integrity and effective communication with stakeholders.<br><br>Responsibilities:<br>• Conduct physical inventory audits to ensure accuracy and compliance.<br>• Review audit results and verify data consistency.<br>• Develop and implement scripts to maintain data hygiene and improve data quality.<br>• Process, clean, and prepare audit data for analytical purposes.<br>• Generate ad hoc and monthly reports tailored to business needs.<br>• Collaborate closely with stakeholders and end-users to identify requirements and deliver effective solutions.<br>• Utilize tools such as ServiceNow, Splunk, Tableau, and Dataiku to support data analytics and reporting workflows.<br>• Ensure project timelines and deliverables are met through proactive planning and execution.
  • 2026-02-09T18:04:30Z
Cloud Engineer
  • Columbia, MD
  • onsite
  • Temporary
  • 59.38 - 68.75 USD / Hourly
  • We are looking for an experienced Cloud Engineer to join our team in Columbia, Maryland. In this long-term contract position, you will play a key role in managing and securing our cloud infrastructure, focusing on Microsoft Azure and related technologies. The ideal candidate will possess extensive knowledge of identity and access management, endpoint security, and cloud monitoring tools to ensure the safety and compliance of our systems.<br><br>Responsibilities:<br>• Manage and administer Microsoft Entra ID (Azure AD), including user and group management, conditional access policies, and privileged identity governance.<br>• Configure and oversee Microsoft Intune for device compliance, configuration profiles, and application deployment across various platforms.<br>• Monitor and respond to security incidents using tools such as Microsoft Sentinel and Microsoft Defender solutions.<br>• Implement and maintain Zero Trust security principles, ensuring adherence to best practices and compliance standards.<br>• Support hybrid identity environments, including Azure AD Connect and Cloud Sync, ensuring seamless integration.<br>• Develop and maintain documentation, runbooks, and standard operating procedures for security and cloud operations.<br>• Conduct security assessments, remediate vulnerabilities, and participate in continuous improvement initiatives.<br>• Collaborate with audit teams to support compliance requirements and maintain security controls.<br>• Provide operational troubleshooting and support for endpoint management and cloud security solutions.
  • 2026-02-16T19:43:41Z
Lead Azure System Engineer
  • Reston, VA
  • onsite
  • Permanent
  • 150000.00 - 165000.00 USD / Yearly
  • We are looking for a skilled Lead Azure System Engineer to design, implement, and manage robust Azure infrastructure solutions in line with organizational objectives. Based in Reston, Virginia, this role focuses on optimizing system performance, ensuring platform security, and driving innovation through cloud technologies. The ideal candidate will bring deep expertise in cloud engineering and a proactive approach to solving complex technical challenges.<br><br>Responsibilities:<br>• Architect and manage resilient Azure infrastructure solutions tailored to business needs.<br>• Ensure high system availability, resource efficiency, and robust security across diverse environments.<br>• Automate infrastructure provisioning and configuration using tools like Terraform and Bicep.<br>• Collaborate with teams to integrate hybrid solutions bridging on-premises and cloud resources.<br>• Monitor and enhance the performance, reliability, and cost-effectiveness of Azure environments.<br>• Troubleshoot and resolve advanced system and network issues escalated by support teams.<br>• Stay updated on Azure innovations and incorporate new features into organizational processes.<br>• Develop and maintain detailed documentation, including architecture diagrams and technical records.<br>• Work with M365, Intune, and Identity & Access Management solutions to support system integration.
  • 2026-02-19T20:04:10Z