Freelance Full Stack Software Engineer Jobs in New Jersey

Responsibilities

Peraton Labs is seeking an experienced Full-Stack Software Engineer to join an existing engineering team developing a prototype RF spectrum planning and monitoring system for Department of Defense clients.

The ideal candidate brings strong full-stack fundamentals and the professional maturity to operate effectively with minimal direction. This individual will be expected to develop a thorough understanding of the application and its users, proactively identify opportunities for improvement, and deliver well-considered solutions without requiring explicit task definition at every step.

Success in this role requires technical depth across the stack, sound judgment about where to focus effort, and the communication skills to remain well-aligned with a team that spans software engineers, domain experts, and DoD stakeholders.

Key responsibilities may include:

• Build and improve features across the full stack - React frontend, FastAPI backend, and TypeScript/Node.js services
• Understand user workflows and use cases; identify improvements without waiting for explicit guidance
• Develop and maintain REST APIs and containerized services (Docker)
• Write clean, testable Python and JavaScript/TypeScript code
• Engage with program leadership and stakeholders to clarify requirements and validate solutions
• Maintain technical documentation for architecture, APIs, and integrations
• Contribute to code reviews and testing

#PLABS26

Qualifications

Required Qualifications:

• Minimum 5+ years of experience with a Bachelor's degree, 3+ years with a Master's degree, or a PhD in Computer Science, Software Engineering, Mathematics, or related field
• Demonstrated full-stack development experience on real-world applications
• Strong proficiency in Python and TypeScript/JavaScript
• Experience with React (component architecture, state management, API integration)
• Experience with FastAPI or comparable Python web frameworks
• Familiarity with Node.js and server-side TypeScript
• Experience with message brokers (e.g. NATS)
• Working knowledge of Docker for containerized development
• Experience with SQL and/or NoSQL database design
• Ability to understand operational context and translate use cases into software solutions
• Clear communicator - written and verbal - across technical and non-technical audiences
• US Citizenship with the ability to obtain/maintain a Secret clearance
• Candidate should be local and able to work onsite at our Red Bank, NJ location

Desired Qualifications:

• Background in RF, spectrum management, spectrum sensing, software defined radios, propagation modeling, signal processing, or related DoD domains
• Familiarity with geospatial libraries (e.g. CesiumJS) or real-time data streaming
• Experience with C/C++ and embedded development
• Experience with MCP/LLM development and integration
• Familiarity with RF lab equipment (e.g. spectrum analyzer, oscilloscope, software defined radio)
• Familiarity with developing with coding agents such as OpenAI Codex
• CI/CD pipeline experience
• Cybersecurity best practices in web application development
• Experience with Kubernetes or container orchestration
• Exposure to cloud environments such as AWS GovCloud, Azure Government, or Google Cloud in a DoD context

Peraton Overview

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 world's 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 can't be done by solving the most daunting challenges facing our customers. Visit peraton.com to learn how we're keeping people around the world safe and secure.

Target Salary Range$104,000 - $166,000. This represents the typical salary range for this position. Salary is determined by various factors, including but not limited to, the scope and responsibilities of the position, the individual's experience, education, knowledge, skills, and competencies, as well as geographic location and business and contract considerations. Depending on the position, employees may be eligible for overtime, shift differential, and a discretionary bonus in addition to base pay.EEOEEO: Equal opportunity employer, including disability and protected veterans, or other characteristics protected by law.Employment Type: FULL_TIME