Senior Full-Stack Engineer - Federal Modernization (Remote)

Lightfeather Io Llc; Northern (KY); Hybrid; USD 90,000 - 115,000; Full time

Job summary

LightFeather IO LLC is seeking a Senior Full Stack Engineer to support a federal government client in modernizing critical mission systems. You will own full stack delivery with a focus on translating complex legacy system behavior into clean, scalable software. The role is fully remote (EST hours) and full-time.

US citizenship is required to obtain a Public Trust clearance. Responsibilities include designing, developing, and maintaining full stack applications and building APIs and front-end

Qualifications

• 7+ years of hands-on full stack software development experience.
• Bachelor's degree in Computer Science or related field (or equivalent experience).
• Experience with Java and frameworks such as Spring Boot.
• Experience designing and implementing RESTful APIs.
• Experience 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.

Responsibilities

• Design, develop, and maintain full stack applications supporting modernization of 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

Full stack

Java

Spring Boot

REST APIs

Relational DB

Agile

Enterprise systems

Problem solving

Education

Bachelor's degree

Job description

LightFeather IO LLC is seeking a Senior Full Stack Engineer to support a federal government client in modernizing critical mission systems. You will own full stack delivery with a focus on translating complex legacy system behavior into clean, scalable software. The role is fully remote (EST hours) and full-time.

US citizenship is required to obtain a Public Trust clearance. Responsibilities include designing, developing, and maintaining full stack applications and building APIs and front-end