Full Stack Developer Junior-Mid

Millennial Software; Chantilly (VA); On-site; USD 85,000 - 120,000; Full time

Benefits offered by this job

Equity

100% company-paid medical, dental, and

Vision premiums for dependents

100% company-paid disability and life

15% 401(k) company contribution

30 days of PTO/holidays

Generous training budget

Paid paternal and maternal leave

Business development incentives

Company swag

Job summary

Millennial Software is seeking a Junior to Mid Full Stack Software Developer to join a collaborative team supporting a Government customer. This role focuses on modern, data-driven applications and tools, spanning frontend and backend, with emphasis on secure development practices and scalable architectures.

The position offers growth into full lifecycle development, collaboration with users and developers, and work within a mission-critical environment starting in 2027.

Qualifications

• Bachelor's degree or equivalent practical experience.
• Demonstrated experience delivering production software across frontend and backend.
• Experience designing and consuming APIs (REST/GraphQL).
• Experience with Docker containers, Helm charts, and Kubernetes clusters.

Responsibilities

• Design, build, test, and ship full-stack features spanning UIs, backends, and data layers.
• Collaborate with product and design to translate requirements into technical plans and iterative deliverables.
• Build and maintain scalable APIs and service integrations for reliability and performance.
• Implement accessible frontend components with usability in mind.
• Deploy and maintain components in Kubernetes using Helm and CLIs.
• Write automated tests and participate in code reviews.

Skills

Full-stack delivery

API design

CI/CD

Cloud platforms

Unit testing

Debugging

Education

Bachelor's degree or equivalent

Tools

Docker

Kubernetes

Helm

REST/GraphQL

AWS/Azure/GCP

Job description

Description

Millennial Software is revolutionizing the landscape of security and defense by leveraging our core competencies in software development, automation, DevSecOps, and machine learning.

About Millennial Software:

Millennial Software is revolutionizing the landscape of security and defense by leveraging our core competencies in software development, automation, DevSecOps, and machine learning.

• We are an employee-owned company, every employee receives equity in the company
• 100% company-paid medical, dental, and vision premiums for you and all dependents
• Ability to get increased salary if you don't need medical/dental/vision
• 100% company-paid disability and life insurance benefits
• 15% 401(k) company contribution
• 30 days of PTO/holidays
• Generous training budget
• Paid Paternal and Maternal Leave
• Business development / growth incentives
• Top notch company swag

About the Position:

Millennial Software is seeking a Junior-Mid Full Stack Software Developer to join our collaborative team supporting a Government customer. This is for a future contract slated to start in early 2027. You'll contribute to the design, development, and support of modern, data-driven applications and tools that simplify complex user workflows and enable mission-critical decisions.

This is a great opportunity for a motivated developer to grow technical skills across the full stack, with a particular focus on modern software development processes and technologies.

The ideal candidate is passionate in the full lifecycle of application, including design, coding, testing, implementation, deployment as well as support and maintenance. The candidate must be comfortable collaborating closely with users and developers to build and maintain polished, high-performance tools in mission-critical environments.

Essential Functions:

• Design, build, test, and ship full-stack features spanning user interfaces, backend services, and data layers.
• Collaborate with product and design to translate requirements into technical plans and iterative deliverables.
• Build and maintain scalable APIs and service integrations; ensure correctness, reliability, and performance.
• Implement and maintain frontend components with attention to usability, responsiveness, and accessibility.
• Deploy, upgrade and maintain software components into Kubernetes based infrastructures using helm charts and command line tools.
• Write automated tests and participate in code reviews to maintain quality and reduce defects.
• Monitor, troubleshoot, and resolve production issues; participate in on-call or incident response as needed.
• Improve developer workflows (CI/CD, local dev, tooling) and system observability (logging, metrics, tracing).
• Document solutions, decisions, and operational runbooks to support long-term maintainability.
• Follow secure development practices and contribute to risk reduction (security, privacy, compliance as applicable).

Requirements

Required Qualifications:

• Demonstrated experience delivering production software across both frontend and backend domains.
• Proficiency in at least one modern backend language (e.g., Python, Java, Go, C#, Node.js) and one modern frontend stack (e.g., JavaScript/TypeScript with React/Vue/Angular).
• Experience designing and consuming APIs (REST and/or GraphQL), integrating with databases, and handling data models.
• Experience with messaging and queuing platforms such as Kafka, RabbitMQ, or similar.
• Experience creating and maintaining Docker containers, Helm charts, orchestration platforms such as Kubernetes clusters, and using cloud infrastructure services (AWS/Azure/GCP).
• Working knowledge of software engineering fundamentals: version control, testing, debugging, performance, and secure coding.
• Experience collaborating in a team environment (code reviews, iterative delivery, clear communication).
• Ability to break down ambiguous problems and deliver solutions with measurable outcomes.
• Bachelor's degree in a related field or equivalent practical experience.
• Willingness to be submitted for a TS/SCI clearance

Nice to have:

• Experience with event-driven systems (queues/streams), caching, and distributed system patterns.
• Familiarity with infrastructure-as-code and CI/CD best practices.
• Experience with observability tools (APM, structured logging, metrics, tracing).
• Exposure to accessibility standards (WCAG) and frontend performance optimization.
• Prior work in regulated environments or systems requiring strong security/compliance considerations.