Full Stack Developer Junior-Mid

Millennial Software Solutions • Chantilly, VA

7d

About The Position

Millennial Software is seeking a Junior-Mid Full Stack Software Developer to join a collaborative team supporting a Government customer. The role is for a future contract slated to start in early 2027. The developer will contribute to designing, developing, and supporting modern, data-driven applications and tools that simplify complex workflows and enable mission-critical decisions. This position offers the opportunity to grow technical skills across the full stack, particularly in modern software development processes and technologies. The ideal candidate is engaged in the full application lifecycle, including design, coding, testing, implementation, deployment, support, and maintenance, and is comfortable collaborating with users and developers to build and maintain polished, high-performance tools in mission-critical environments.

Requirements

• Demonstrated experience delivering production software across frontend and backend domains.
• Proficiency in at least one modern backend language, such as Python, Java, Go, C#, or Node.js, and one modern frontend stack, such as JavaScript/TypeScript with React, Vue, or Angular.
• Experience designing and consuming REST and/or GraphQL APIs, 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 and Helm charts, working with orchestration platforms such as Kubernetes clusters, and using cloud infrastructure services such as AWS, Azure, or GCP.
• Working knowledge of software engineering fundamentals, including version control, testing, debugging, performance, and secure coding.
• Experience collaborating in a team environment, including code reviews, iterative delivery, and 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 Haves

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

Responsibilities

• Design, build, test, and ship full-stack features across user interfaces, backend services, and data layers.
• Collaborate with product and design teams to translate requirements into technical plans and iterative deliverables.
• Build and maintain scalable APIs and service integrations, ensuring correctness, reliability, and performance.
• Implement and maintain frontend components with attention to usability, responsiveness, and accessibility.
• Deploy, upgrade, and maintain software components in 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, including CI/CD, local development, and tooling, as well as system observability through logging, metrics, and tracing.
• Document solutions, decisions, and operational runbooks to support long-term maintainability.
• Follow secure development practices and contribute to risk reduction in security, privacy, and compliance as applicable.

Benefits

• Employee ownership with equity for every employee.
• Company-paid medical, dental, and vision premiums for the employee and all dependents.
• Ability to receive increased salary if medical, dental, and vision coverage is not needed.
• Company-paid disability and life insurance benefits.
• 15% company 401(k) contribution.
• 30 days of PTO/holidays.
• Generous training budget.
• Paid paternal and maternal leave.
• Business development and growth incentives.
• Company swag.

What This Job Offers

• Job Type: Full-time
• Career Level: Entry Level