Full Stack Developer IV

EXPANSIA; Nashua (NH); Remote; USD 138,000 - 163,000; Full time

Job summary

EXPANSIA, forming the Aether Aerospace platform for Defense Tech, seeks a Full Stack Developer IV to design, develop, and secure scalable web apps using Python, FastAPI, Vue, and TypeScript. You will build APIs, evaluate new tech, and drive best practices across DevSecOps and IaC.

The role emphasizes API design, cloud deployment, and AI-assisted coding tools while collaborating with DoD stakeholders and leveraging a modern stack including Terraform, Docker, and Kubernetes.

Qualifications

• Clearance: Active Secret Clearance required.
• Bachelor's degree in computer science, information systems, engineering, cybersecurity, or related field with 8+ years of experience, or Master's with 6+ years.
• Advanced proficiency in Python and backend API development using FastAPI.
• Strong frontend experience with JavaScript/TypeScript and Vue (or similar).
• Experience designing RESTful and GraphQL APIs and service integrations.
• Experience with cloud platforms and IaC (Terraform).
• Knowledge of CI/CD, automated testing, DevSecOps, and secure coding practices.

Responsibilities

• Design, develop, and integrate secure, scalable web apps with Python, FastAPI, Vue, TypeScript.
• Evaluate and adopt alternative backend/frontend technologies as needed.
• Develop and maintain RESTful and GraphQL APIs and service integrations.
• Implement automated tests and CI/CD pipelines; manage IaC with Terraform.
• Collaborate with teams to gather requirements and deliver secure software.

Skills

Python

FastAPI

JavaScript/TypeScript

Vue

APIs (REST/GraphQL)

CI/CD

DevSecOps

Agile

AI-assisted development

Problem solving

Education

Bachelor's degree in computer science or related field

Master's degree in related field

Tools

Terraform

Docker

Kubernetes

Git

AWS/Azure

SQL (PostgreSQL/MySQL)

Job description

Start Date: Immediate JHNA, CTSi, and EXPANSIA have come together to form a Defense Technology platform named Aether Aerospace focused on delivering high-impact technologies, technology-enabled services and advanced manufacturing solutions to the U.S. Department of Defense and related national security customers. Backed by Falfurrias Management Partners, the platform brings together deep domain expertise across Army, Navy, and Air Force and Space Force programs, digital engineering, systems integration, and specialized manufacturing capabilities. The combined organization operates as a multi-entity aerospace and defense technology and tech-enabled services and manufacturing enterprise positioned for scalable growth, operational excellence, and long-term value creation.

OVERVIEW

Full-time/Permanent Employee Location: Remote

As a Full Stack Developer IV, you will lead the design, development, and implementation of secure, scalable web applications and services using modern software development technologies. Our primary technology stack includes Python, FastAPI, Vue, and TypeScript, with opportunities to work with other backend and frontend technologies such as Go, Rust, React, and Next.js. You will gather and document requirements, develop innovative solutions, and optimize application performance while ensuring compliance with coding, security, and architectural best practices. Your role includes troubleshooting complex technical issues, collaborating with stakeholders, and contributing to continuous improvement through DevSecOps practices, Infrastructure as Code (IaC), automated testing, and AI-assisted development using agentic coding tools. You will apply agile development methodologies to deliver reliable, maintainable, and high-quality software solutions.

RESPONSIBILTIES

• Design, develop, and integrate secure, scalable web applications and services using Python, FastAPI, Vue, TypeScript, and other modern development technologies
• Evaluate and implement alternative backend and frontend technologies, such as Go, Rust, React, and Next.js, based on technical requirements and architectural considerations
• Design, develop, document, and maintain RESTful and GraphQL APIs and service integrations
• Apply software engineering best practices, including object-oriented programming, design patterns, and modular architecture
• Implement and maintain automated unit, integration, and end-to-end testing to ensure software quality and reliability
• Develop, maintain, and optimize relational database schemas, queries, and application data access patterns
• Implement and maintain CI/CD pipelines, automated builds, and deployment processes in support of DevSecOps best practices
• Develop and maintain IaC using Terraform to provision and manage cloud infrastructure
• Leverage AI-assisted development and agentic coding tools to improve development efficiency, code quality, testing, and documentation while maintaining appropriate security and human oversight
• Support containerized application development, deployment, and orchestration using technologies such as Docker and Kubernetes
• Apply secure coding practices, vulnerability management, and software supply chain security throughout the software development lifecycle
• Troubleshoot complex application, infrastructure, and integration issues to improve system performance, scalability, and reliability
• Provide technical leadership through architectural guidance, code reviews, mentoring, and continuous improvement of development practices
• Collaborate with clients and internal teams to gather and document system requirements
• Work closely with stakeholders to resolve software development and implementation challenges
• Manage version control and source code repositories, ensuring efficient collaboration
• Support and document internal tools, software functionality, and system enhancements
• Support program operational initiatives that improve processes, productivity, and quality
• Ensure 100% of planned hours are worked and recorded
• Identify and forward to your leadership any opportunities that could lead to growth within your work area
• Participate in growth efforts as requested
• Ensure all contractual deliverables are met/exceeded to the customer's satisfaction
• Complete personal PDP and attend Company Meetings
• Build productive and positive professional relationships with clients within your program
• Execute all contract requirements as assigned in accordance with the contract-specific LCAT and requirements
• Perform other related duties as assigned

KEY QUALIFICATIONS

• Clearance: Active Secret Clearance Education and Years of Experience: Bachelor's degree in computer science, information systems, engineering, cybersecurity, or a related field (or equivalent) with 8+ years of relevant experience, or a Master's degree with 6+ years of relevant experience.
• Advanced proficiency in Python and experience developing backend applications and APIs using FastAPI or comparable frameworks
• Strong experience developing modern frontend applications using JavaScript, TypeScript, and Vue or comparable frontend frameworks
• Experience designing, developing, and integrating APIs, including RESTful and GraphQL interfaces, and service integrations
• Proficiency with relational databases such as PostgreSQL or MySQL, including schema design and query optimization
• Experience with git-based version control, automated testing, and CI/CD pipelines
• Experience implementing DevSecOps practices, including secure coding, automated security testing, and vulnerability remediation
• Experience with cloud platforms such as Azure or AWS, including managed compute, networking, storage, and database services
• Experience developing and maintaining IaC using Terraform or comparable technologies
• Familiarity with containerization technologies such as Docker and cloud-based application deployments
• Experience using AI-assisted development tools or agentic coding workflows to support software development, testing and maintenance
• Ability to independently design technical solutions to complex problems and provide technical guidance to other developers
• Current CompTIA Security+ CE certification

PREFERRED ADDITIONAL QUALIFICATIONS

• Experience with additional backend languages such as Go, Rust, or Java
• Experience with alternative frontend frameworks such as React, Next.js, or other modern JavaScript frameworks
• Experience with container orchestration platforms such as Kubernetes, Azure AKS, or AWS ECS
• Experience with event-driven architectures, asynchronous processing, message queues, and caching technologies
• Experience implementing automated cloud infrastructure provisioning, configuration management, and security controls at scale
• Experience integrating large language models (LLMs), AI agents, or Model Context Protocol (MCP) into software development workflows or applications
• Familiarity with observability platforms, application monitoring, centralized logging, and performance optimization
• Experience developing software within DoW, federal government, or other regulated environments
• Strong knowledge of user experience (UX), accessibility, and usability best practices
• Microsoft Certified: Azure Network Engineer Associate
• Cisco CCNP Enterprise, CCNP Security, or an equivalent advanced networking certification.

$137,879 - $162,500 a year

There are a host of factors that can influence final salary including, but not limited to, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, geographic location, education, and certifications.

Our employees value the flexibility Aether Aerospace allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our unique mix of benefits options is designed to support and protect employees and their families. Employment benefits include health and wellness programs, income protection, paid leave and retirement and savings.

Aether Aerospace is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.