- Drive the execution and delivery of features by collaborating with many cross functional teams, architects, product owners, and developers. - Experience with short release cycles, feature toggle implementations, and continuous integration. - Experience with a microservice architecture and platform-based development. - Responsible for development process improvement and removing impediments. - Contributes to development tasks such as coding and feature verifications to assist teams with release commitments. - Coaching and mentoring leads through technical and nontechnical challenges. - Bachelor’s degree in Computer Science, Business Information Systems or related field or equivalent work experience is required. - 10+ years experience in software development. - Leading a team. - Experience(s) as a technical or team lead or equivalent experience. - Working knowledge of unit testing, user stories or use cases, design patterns or equivalent experience, and object oriented software design. - Desire to be a team player and work in a fast-paced environment. - .NET - .NET Core. - ASP.NET - Software Developer. - Software Engineer. - C# Experience.

• Write clear, concise Angular following best practices. • Improve and maintain the Integration Marketplace team's frontend stack. • Maintain high-quality coding standards in collaboration with others on the team. • Deliver well-tested, scalable solutions. • Serve as a sparring partner to team members. • Share and debate best practices proactively with peers. • Be self motivated and be comfortable working with remote colleagues as the team is based in Denmark & Hungary.

Drive the execution and delivery of features by collaborating with many cross functional teams, architects, product owners, and developers. Experience with a microservice architecture and platform-based development.

Pay: $130,000.00 - $150,000.00 per year Job description: Senior Full Stack Developer Constellation seeks a Senior Full Stack Developer to join our Homeland Security Team. This role requires a strong front-end development background using React, along with hands-on Python experience for building data pipelines and automation workflows. The ideal candidate will help develop user-facing applications integrated with backend ETL processes that support operational reporting, data collection, and intelligent automation. This position involves close collaboration with analysts, engineers, and stakeholders to deliver mission-driven capabilities across multiple workstreams. Key Responsibilities: - Design, develop, and maintain modern web applications using React that integrate with backend data automation workflows. - Build and support Python-based ETL pipelines to extract, transform, and load data into the enterprise reporting platform. - Collaborate with automation engineers, analysts, and cloud engineers to design intuitive, data-driven user interfaces. - Integrate frontend components with APIs and automation services built using tools such as Apache Airflow and Databricks. - Participate in sprint planning and technical discussions to refine system designs and requirements. - Ensure data accuracy, performance, and maintainability across frontend and backend components. The ideal candidate must have the following experience, background, and credentials: - At least 5 years of experience in front-end development using React and hands-on experience using Redux for state management in production React applications - At least 2 years of experience developing Python scripts for automation or ETL workflows, including usage and familiarity with Pandas - Strong experience developing front-end applications using HTML, TypeScript, and CSS with a focus on responsive design and modern UI/UX - Strong understanding of RESTful APIs, React component design and common component libraries, and secure web development practices - Proficiency in writing unit tests using frameworks such as Jest - Experience working in a collaborative code environment and familiarity with Git, CI/CD pipelines, and modern development workflows - Bachelor’s degree in Computer Science, Software Engineering, or a related field - Be a U.S. citizen able to pass a background investigation by the client agency. DHS clearance with CBP/ICE or DoD Top-Secret preferred Job Type: Full-time Work Location: Remote Benefits: - 401(k) - 401(k) matching - Dental insurance - Disability insurance - Flexible schedule - Flexible spending account - Health insurance - Life insurance - Professional development assistance - Vision insurance Experience: - React: 3 years (Required) - Front-end development: 3 years (Required) - Python: 2 years (Required)