Sr. Systems Engineer (Full-Stack Developer) Marathon TS is looking for a dedicated Full-Stack Software Engineer to help build, support and migrate a cloud-based Web Dashboard application that processes healthcare EDI transactions. The ideal candidate has experience with (Java/Node.js) backend integration work, (Angular) front-end UI development and understands structured healthcare data. This is a 100% Remote role.
JOB DESCRIPTION - Design, build, and maintain RESTful APIs in Java and/or Node.js that retrieve, transform, and serve EDI healthcare records
- Integrate with internal platform APIs, EDI processing pipelines, and data services to deliver live and historical EDI transaction data reliably and performantly
- Support and contribute to an Angular-based dashboard frontend - consuming APIs, building or maintaining components, and ensuring data is surfaced accurately to business and clinical users
- Collaborate with backend C#/.NET and AWS data engineers to define clean API contracts and ensure reliable data delivery across services
- Write clean, testable, well-documented code and participate actively in code review
- Perform unit and integration testing across backend services and API layers
- Support deployment, monitoring, and performance of backend services in production on AWS
- Apply and promote best software engineering practices within an agile framework
- Use Git and GitHub for version control, branching, pull requests, and collaborative development
Education - Bachelor's or master's degree in computer science, Engineering, or a related technical discipline required; equivalent practical experience considered
Experience - 8 years of software development experience with a strong backend focus (Java and/or Node.js)
- Experience designing and consuming RESTful APIs in healthcare or enterprise environments
- Proven experience building backend services that serve structured EDI or healthcare data to frontend applications
- Some hands-on Angular experience - able to integrate APIs and contribute to frontend components
Requirements Core Technical
- Strong backend development experience in Java and JavaScript/TypeScript/Node.js - API design, data transformation, error handling, and performance
- Experience with Angular or another Modern front-end framework
- Proven ability to build RESTful APIs that consume and transform structured data (XML, JSON)
- Experience working with EDI data formats
- Familiarity with web document submission processes a plus
- Working knowledge of Angular - components, services, API integration; frontend development is secondary but real
- Hands-on Cloud (Azure/AWS) experience - API Gateway, Lambda, S3, CloudWatch, or related services
- Proficient with Git and GitHub - branching strategies, pull requests, collaborative workflows
- Experience with unit and integration testing frameworks (JUnit, Jest, or equivalent)
Process & Soft Skills
- Strong communication skills - able to work with stakeholders and cross-functional engineers to define and refine API requirements
- Experience with agile methodologies (Scrum, Kanban) and JIRA
- Ability to work independently and as part of a distributed team
- Strong attention to detail - especially around data accuracy and fidelity for healthcare records
- Ability to conduct code reviews and provide constructive feedback
Nice to Have
- Familiarity with healthcare payer/PBM systems, clearinghouses, or pharmacy operations
- Experience with VA systems, ARS workflows, or 275 claim attachment transactions
- Knowledge of HIPAA compliance requirements in API and web application development
- Familiarity with accessibility standards (Section 508 / WCAG 2.1) for government-facing applications
- Experience with containerization (Docker, ECS, EKS)
- Familiarity with C#/.NET backend services for cross-team integration touchpoints
Clearance Requirement: US Citizenship required with the ability to obtain and maintain a Public Trust clearance
