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i4DM

Backend Java API Developer

Reposted Yesterday
Remote
Hiring Remotely in USA
Mid level
Remote
Hiring Remotely in USA
Mid level
Develop and maintain secure backend systems and RESTful APIs using Java and Node.js; collaborate in Agile teams and manage CI/CD pipelines.
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About Our Team

Our employees thrive in a culture that's fast-paced and ego-free, where innovation and collaboration are encouraged at every turn. We provide federal agencies instant access to experienced professionals who understand their unique challenges and know the most efficient ways to address them. We continually invest in resources and talent, keeping specialized teams in place to craft tailored technologies. Our solutions empower federal organizations to grow, modernize, and succeed in a rapidly evolving landscape.


We value all voices and seek individuals passionate about technology and creative problem-solving. If you enjoy expanding your skill set while tackling real-world business problems, you’ll feel right at home here. Veterans and military spouses are especially encouraged to bring your unique experience to our team.

 

About the Role:

We are seeking an experienced Senior Backend / API Application Developer to design, develop, and maintain scalable, secure backend systems and APIs. This role blends Java (Spring Boot) and JavaScript/TypeScript (Node.js) development and focuses heavily on data access, system integrations, and API-driven architectures. You will collaborate with cross-functional Agile teams to deliver high-quality, production-ready solutions that integrate with enterprise systems and external partners.


Key Responsibilities

  • Design, develop, and maintain scalable and secure backend applications and RESTful APIs using Java (Spring Boot) and Node.js with TypeScript.
  • Work extensively with relational databases (Salesforce, PostgreSQL, MySQL, Oracle, Microsoft SQL Server) and NoSQL data stores such as MongoDB or DynamoDB.
  • Design and implement efficient data access layers, optimized queries, and database schemas to ensure performance and scalability.
  • Build and maintain system-to-system integrations using RESTful APIs and event-driven messaging patterns.
  • Configure and manage API gateways, proxies, routing, rate limiting, and access control using API management platforms.
  • Develop asynchronous workflows using messaging systems such as Kafka or RabbitMQ.
  • Write clean, efficient, and well-documented code with comprehensive unit and integration tests.
  • Develop and maintain CI/CD pipelines using Jenkins or GitLab CI.
  • Containerize applications using Docker and support orchestration with Kubernetes.
  • Collaborate with Agile teams, participate in code reviews, and contribute to continuous improvement.

TAG: #LI-I4DM

 Qualifications

  • Bachelor’s degree in Computer Science, Engineering, or equivalent professional experience.
  • 3–5+ years of experience in backend or API development using Java and/or JavaScript/TypeScript.
  • Strong understanding of object-oriented programming, data structures, and design patterns.
  • Hands-on experience with SQL and relational databases.
  • Experience working with RESTful APIs, integrations, and distributed systems.
  • Proficiency with Git and Agile development practices.

 

Preferred Skills

  • Experience with microservices architectures and integration middleware including Mulesoft.
  • Knowledge of healthcare data exchange standards such as FHIR.
  • Experience with cloud services (AWS: Lambda, ECS, RDS).
  • Familiarity with additional backend languages such as Python, Go, or Ruby.
  • Ability to obtain and maintain a U.S. Government Public Trust clearance.

Top Skills

AWS
Docker
DynamoDB
Gitlab Ci
Java
JavaScript
Jenkins
Kafka
Kubernetes
Microsoft Sql Server
MongoDB
Mulesoft
MySQL
Node.js
Oracle
Postgres
RabbitMQ
Salesforce
Spring Boot
Typescript

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