Senior Full-Stack Developer – Onsite, Cleared

FANTOM CORPORATION; Chantilly (VA); On-site; USD 170,000 - 210,000; Full time

Job summary

Fantom Corporation is seeking an Expert Software Developer to design, develop, and modernize enterprise applications powering mission systems. You will work across full‑stack and front‑end development to build secure, scalable, high‑performing software for critical Intelligence Community operations.

The ideal candidate brings deep expertise in Java, Python, JavaScript/Angular, RESTful APIs, and enterprise frameworks, and will collaborate with architects, systems engineers, and mission

Qualifications

• Bachelor's degree in Computer Science, Software Engineering, Information Systems, or a related technical discipline, or an equivalent combination of education and experience.
• Approximately 10+ years of professional software development experience.
• Expert-level experience in full-stack development using Java and/or Python, RESTful APIs, and enterprise application frameworks; or front-end development using JavaScript, Angular, and modern UI development frameworks.
• Experience designing and developing enterprise software applications.
• Experience working within Agile software development environments.

Responsibilities

• Design, develop, enhance, and maintain enterprise software applications supporting mission-critical operations.
• Develop scalable backend services and RESTful APIs using Java and/or Python.
• Build responsive, modern user interfaces using JavaScript, Angular, and contemporary front-end development practices.
• Design and implement full-stack application solutions across front-end and backend technologies.
• Develop and optimize distributed data processing solutions using Apache Spark, where applicable.
• Design and maintain enterprise search and analytics capabilities using Elasticsearch or OpenSearch.
• Collaborate with architects, systems engineers, developers, and mission stakeholders to translate requirements into effective technical solutions.
• Lead and contribute to technical design discussions and software architecture decisions.
• Conduct peer code reviews and promote software engineering best practices.
• Troubleshoot complex application and integration issues.
• Optimize applications for performance, scalability, reliability, and maintainability.
• Support automated testing and software quality initiatives throughout the development lifecycle.
• Support CI/CD pipelines and DevSecOps practices.
• Participate in Agile development activities and contribute throughout the complete software development lifecycle.

Skills

Java

Python

JavaScript

RESTful APIs

Angular

Apache Spark

Elasticsearch/OpenSearch

AWS Cloud

Spring Boot

Docker

Kubernetes

CI/CD

Agile

OOP

Education

Bachelor's degree in Computer Science or related

Tools

Spring Boot

Docker

Kubernetes

AWS

OpenSearch/Elasticsearch

Apache Spark

Git/GitLab

Job description

Fantom Corporation is seeking an Expert Software Developer to design, develop, and modernize enterprise applications powering mission systems. You will work across full‑stack and front‑end development to build secure, scalable, high‑performing software for critical Intelligence Community operations.

The ideal candidate brings deep expertise in Java, Python, JavaScript/Angular, RESTful APIs, and enterprise frameworks, and will collaborate with architects, systems engineers, and mission