Senior Full-Stack Engineer: Cloud, APIs & Federal Security

i3

Huntsville (AL)

On-site

USD 120,000 - 180,000

Full time

6 days ago

Be an early applicant

Application generator

Turn this role into an interview — a resume and cover letter built around what this employer wants.

Get past ATS filters

Job summary

i3 seeks a Senior Full Stack Engineer to design, build, and modernize enterprise applications for a major federal transformation program. You will work across front-end, back-end, APIs, and cloud environments to deliver secure, scalable solutions that meet strict government standards.

You will collaborate with Product, DevSecOps, Cloud, Data, QA, and Migration teams, mentor junior engineers, participate in design reviews and demos, and help implement secure coding, testing, and performance

Qualifications

Active Top Secret Security Clearance required.
U.S. Citizenship required.
Bachelor’s degree and 8+ years of software engineering or full-stack development experience.
Experience with front-end and back-end solutions using modern frameworks.
Hands-on experience with APIs, microservices, relational and NoSQL databases.
Experience with CI/CD pipelines, Git, DevSecOps environments, and automated testing.
Strong ability to troubleshoot issues across the entire stack.
Excellent communication and documentation skills.

Responsibilities

Design, develop, and maintain front-end and back-end components for enterprise applications.
Build and optimize REST APIs, microservices, and system-to-system integrations.
Ensure code quality, performance, and maintainability across the full stack.
Develop cloud-compatible services and applications (AWS preferred).
Support deployment of pipelines, infrastructure integration, and CI/CD workflows.
Align application architecture with modernization and cloud migration requirements.
Collaborate with Scrum Masters, Product Leads, QA Automation Engineers, Cloud Engineers, and Data Engineers.
Participate in sprint planning, backlog refinement, technical design reviews, and demos.
Mentor mid-level engineers and support knowledge-sharing across teams.
Implement secure coding practices, logging, auditing, and data-handling requirements.
Conduct performance tuning, optimization, and reliability improvements.
Ensure delivery aligns with federal security standards and program governance.
Support automated testing and validation of application functionality and integrations.
Troubleshoot defects across the stack and coordinate with QA to resolve issues.
Validate readiness for release and major deployment events.
Develop technical design documents, API specifications, data flow diagrams, and code documentation.
Maintain full-stack engineering artifacts required for release, sustainment, and audits.
Provide status updates and technical insights to leadership and cross-functional teams.