Note: The job is a remote job and is open to candidates in USA. LightFeather is seeking a Senior Full Stack Engineer to support a federal government client in modernizing critical mission systems for DHS ICE. The role involves owning full stack delivery, translating complex legacy systems into scalable software, and developing modern application designs.

Responsibilities

• Design, develop, and maintain full stack applications supporting modernization of DHS ICE systems
• Analyze legacy systems and workflows to identify core functionality vs. unnecessary process overhead
• Translate operational requirements into scalable, modern application designs
• Develop backend services, APIs, and integration layers connecting legacy environments to modern platforms
• Build and enhance user-facing components using modern front-end technologies
• Support the full SDLC: analysis, design, development, testing, deployment, and maintenance
• Troubleshoot issues across application, integration, and data layers
• Collaborate with stakeholders to clarify requirements and improve system behavior
• Participate in code reviews and uphold engineering best practices

Skills

• U.S. Citizenship is required with the ability to obtain and maintain a Public Trust clearance
• Bachelor's degree in Computer Science or related field (or equivalent experience)
• 7+ years of hands-on full stack software development experience
• Experience working in complex or enterprise system environments
• Strong experience with Java and frameworks such as Spring Boot
• Experience designing and implementing RESTful APIs
• Experience with front-end technologies including JavaScript, React, HTML, and CSS
• Experience working with relational databases and data access patterns
• Ability to troubleshoot across multiple layers of an application stack
• Experience working in Agile or iterative delivery environments
• Ability to analyze and simplify complex systems and workflows
• Strong systems thinking and problem-framing capability
• Comfort working in ambiguous, poorly documented environments
• Ability to distinguish between essential functionality and legacy process bloat
• Strong ownership mindset and accountability for outcomes
• Effective communication with both technical and non-technical stakeholders
• High learning agility and willingness to adopt new platforms and tools
• Experience with legacy system modernization or transformation efforts
• Experience supporting federal or mission-driven environments
• Exposure to enterprise data platforms or large-scale system integrations
• Experience working in environments where requirements must be derived from real-world usage rather than formal documentation

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