Junior Full Stack Software Engineer (DevSecOps)

Join a cross-functional Scrum team building mission-focused software in an Agile DevSecOps environment in our Herndon VA location. As a junior engineer youll contribute to fullstack features participate in acceptance criteria development automate tests using Open Source/COTS tools document instructions and support integration activities. Youll fix bugs ship enhancements and learn best practices while working with modern cloud data and messaging technologies.

What Youll Do

• Build & deliver software in sprints: design develop test document and integrate features across front-end and back-end services.
• Apply Agile engineering practices: participate in backlog grooming sprint planning daily standups demos and retros.
• Support DevSecOps workflows: use Git-based workflows CI/CD pipelines and containerization to move changes from development to production.
• Automate testing: create unit/integration tests and simple scripts to improve quality and repeatability.
• Contribute to modernization: assist senior engineers in analyzing legacy ExtJS/Spring components and migrating to modern stacks and microservices.
• Collaborate & learn: work closely with product owners UX QA and other engineers; document technical work in Confluence and track tasks in Jira.

Technologies Youll Use (and grow into)

• Front-end: JavaScript/TypeScript with React or Angular HTML5 CSS3 responsive design; exposure to state management (Redux/NgRx) and modern build tools (Webpack Vite Angular CLI).
• Back-end: Python 3.8 (FastAPI or Flask) OR Java (Spring/Spring Boot); RESTful API design and OpenAPI/Swagger.
• Messaging: Basic understanding of message brokers (e.g. ActiveMQ) JMS/STOMP concepts; integrating Python apps (e.g. ).
• Data: PostgreSQL MongoDB (schemas indexing) and AWS managed databases (DynamoDB DocumentDB).
• Search & Analytics: Exposure to Elasticsearch (v8)index management query DSL analyzers/tokenizers Python client usage.
• Cloud & DevOps: AWS (EC2 S3) Docker Kubernetes (foundational) CI/CD with Jenkins GitLab CI or GitHub Actions; infrastructure-as-code (intro level).
• Testing & Quality: JUnit Pytest Jest; familiarity with integration/E2E tools (Cypress Selenium) and TDD concepts.
• Security: Awareness of secure API design OAuth2/JWT CORS configuration and OWASP-aligned practices.

Required Qualifications

• A Bachelors degree in an area applicable to the position with 2 years of relevant experience OR a Masters degree in an area applicable to the position; an additional 4 years of experience maybe considered in lieu of a degree requirement.
• Active TS/SCI with polygraph (required)
• Programming: Coursework or hands-on experience in two or more of the following:
• Java (Spring/Spring Boot)
• Python (FastAPI or Flask; package management with Poetry is a plus)
• JavaScript/TypeScript (React ecosystem or Angular).
• Core skills: REST/JSON fundamentals; basic Git usage; familiarity with Agile/Scrum; exposure to Docker.
• Cloud/Data: Experience or coursework with AWS services (e.g. EC2 S3 plus one of PostgreSQL DynamoDB DocumentDB).
• Testing: Experience with unit testing (e.g. JUnit Pytest or similar).

Desired

• Front-end state management (Redux NgRx); modern build tooling (Webpack Vite Angular CLI).
• Python async/await and ASGI servers (Uvicorn/Hypercorn).
• Elasticsearch basics (indexing query DSL) and Python client usage.
• MongoDB schemas aggregation pipelines performance tuning; drivers (PyMongo or Motor).
• Message broker familiarity (ActiveMQ JMS/STOMP).
• CI/CD pipelines (Jenkins GitLab CI GitHub Actions); infrastructure-as-code (Terraform/CloudFormation).
• Kubernetes fundamentals; container orchestration patterns.
• Legacy analysis/migration: ExtJS and Spring to modern microservices/API gateway patterns.
• E2E testing (Cypress/Selenium); integration testing strategies.
• Collaboration tooling (Jira Confluence); code reviews and branching strategies.
• Monitoring/observability awareness (Prometheus Grafana ELK).

Soft Skills

• Strong analytical and problem-solving mindset; curiosity to learn and ask great questions.
• Clear written and verbal communication for documenting and collaborating.
• Team-oriented with the ability to work independently on assigned tasks.
• Receptive to feedback and mentoring; growth-oriented attitude.

Peraton offers enhanced benefits to employees working on this critical National Security program which include heavily subsidized employee benefits coverage for you and your dependents 25 days of PTO accrued annually up to a generous PTO cap and eligible to participate in an attractive bonus plan.

Peraton is a next-generation national security company that drives missions of consequence spanning the globe and extending to the farthest reaches of the galaxy. As the worlds leading mission capability integrator and transformative enterprise IT provider we deliver trusted highly differentiated solutions and technologies to protect our nation and allies. Peraton operates at the critical nexus between traditional and nontraditional threats across all domains: land sea space air and cyberspace. The company serves as a valued partner to essential government agencies and supports every branch of the U.S. armed forces. Each day our employees do the cant be done by solving the most daunting challenges facing our customers. Visit to learn how were keeping people around the world safe and secure.