Senior Full Stack Engineer — Remote Modernization Lead

Lightfeather Io Llc; Northern (KY); Hybrid; USD 120,000 - 180,000; Full time

Job summary

LightFeather 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 behavior into scalable software in a remote, EST-aligned environment.

The role requires 7+ years of full stack development, strong Java and Spring Boot experience, REST APIs, and the ability to work across multi-layer architectures. U.S.

Qualifications

• 7+ years of hands-on full stack software development experience.
• Experience in enterprise or complex systems.
• Strong Java and Spring Boot background.

Responsibilities

• Design, develop, and maintain full stack applications for modernization efforts.
• Analyze legacy workflows to identify core functionality.
• Translate requirements into scalable, modern designs.
• Develop backend services, APIs, and integration layers.
• Build user-facing components using modern front-end stacks.
• Support the full SDLC from analysis to maintenance.
• Troubleshoot across application, data, and integration layers.
• Collaborate with stakeholders to clarify requirements.
• Participate in code reviews and uphold best practices.

Skills

7+ years

Full stack

Java

Spring Boot

REST APIs

Relational DBs

Agile

Problem solving

Education

Bachelor's degree in Computer Science

Job description

LightFeather 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 behavior into scalable software in a remote, EST-aligned environment.

The role requires 7+ years of full stack development, strong Java and Spring Boot experience, REST APIs, and the ability to work across multi-layer architectures. U.S.