LIGHTFEATHER IO LLC
SeniorFullStackEngineer
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“Senior Full Stack Engineer at LIGHTFEATHER IO LLC. Skills: Full stack delivery, Legacy system modernization, Platform architecture, API development. Design full stack applications. Develop full stack applications”
What You'll Achieve.
Own full stack delivery; Translate complex legacy system behavior into clean, scalable software
Industry & Context.
Analyze and simplify complex systems; Distinguish essential functionality
U. S. citizenship required, Ability to obtain and maintain a Public Trust clearance, Fully Remote (EST hours)
What They're Looking For.
Must Have
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, 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, systems thinking and problem-framing capability, Comfort working in ambiguous, poorly documented environments, Ability to distinguish between essential functionality and legacy process bloat, 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
Nice to Have
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
What You'll Do.
Design full stack applications
Develop full stack applications
Maintain full stack applications
Analyze legacy systems
Translate requirements
Develop backend services
Build user-facing components
Collaborate with stakeholders
Participate in code reviews
How You'll Work.
Team & Collaboration
Collaborate with stakeholders to clarify requirements; Collaborate with stakeholders to improve system behavior
Communication Scope
Effective communication with technical stakeholders; Effective communication with non-technical stakeholders
Full Job Description
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. The current environment includes large legacy systems managing operational workflows such as processing, tracking, and encounter management. These systems carry layers of business rules, manual processes, and tightly coupled functionality. The core challenge is understanding how they work in practice, identifying mission-critical functionality, and translating it into a modern platform-based architecture. The client is adopting Palantir as the target modernization platform. This is a Full Time, Remote Position. Location: Fully Remote (EST hours) Job Type: Full-time Clearance Requirement: U. S. citizenship is required for this position due to federal contract requirements and the need to obtain and maintain a Public Trust. 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. Required Qualifications and 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 expe
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