Software Engineer (Full Stack & JAVA)

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