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. You will own full stack delivery with a focus on translating complex legacy system behavior into clean, scalable software.
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
Company Overview