Remote Senior Full-Stack Engineer: Modernization & APIs

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

Job summary

LightFeather seeks a Senior Full Stack Engineer to support a federal government client in modernizing critical mission systems. You will own full stack delivery, translating complex legacy behavior into clean, scalable software, with Palantir as the target modernization platform.

The role is fully remote (EST hours) with clearances required for government work and a strong emphasis on designing end-to-end solutions across backend, API, and frontend layers.

Qualifications

• 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 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.

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

Java

Spring Boot

REST APIs

Full stack development

Legacy systems analysis

Agile delivery

Problem solving

Communication

Education

Bachelor's degree in Computer Science or related field

Tools

SQL

Job description

LightFeather seeks a Senior Full Stack Engineer to support a federal government client in modernizing critical mission systems. You will own full stack delivery, translating complex legacy behavior into clean, scalable software, with Palantir as the target modernization platform.

The role is fully remote (EST hours) with clearances required for government work and a strong emphasis on designing end-to-end solutions across backend, API, and frontend layers.