Senior API / Integration Engineer

DecisionPoint seeks a Senior API / Integration Engineer to design, build, secure, and optimize enterprise-grade APIs and system integrations supporting applications across a large federal and DoD-aligned mission environment. This senior role enables interoperability across systems, aligns integration patterns with enterprise architecture, and ensures API performance, reliability, and security.

The Senior API / Integration Engineer partners with developers, cloud engineers, cybersecurity specialists, and mission stakeholders to deliver scalable, secure, well-documented APIs and integration services that support MC&FP’s broader application ecosystem and enterprise data flows.

This position is fully remote., The Senior API / Integration Engineer will: Architect, build, and optimize enterprise APIs and backend integration services.

• Implement secure REST and GraphQL endpoints, schemas, and data contracts.

• Design integration workflows, service interactions, and middleware/API gateway connections.

• Ensure APIs comply with DoD cybersecurity policies, Zero Trust principles, and secure coding practices.

• Build and maintain integration pipelines between internal and external systems.

• Conduct API performance tuning, scalability improvements, and error-handling enhancements.

• Troubleshoot complex integration failures, data issues, and cross-system communication gaps.

• Support API versioning, lifecycle management, and migration planning.

• Produce API documentation including OpenAPI/Swagger specs, interface definitions, and usage guides.

• Collaborate with cloud engineering teams to optimize API hosting, routing, and authentication.

• Conduct peer code reviews, enforce development standards, and mentor junior developers.

• Participate in Agile ceremonies and support sprint-based delivery.

Bachelor’s degree in Computer Science, Information Systems, Engineering, or a related technical field.

Experience (Required)

• Minimum 10 years of experience in API development, backend engineering, or systems integration.

• Experience designing secure, scalable REST APIs and integration workflows.

• Experience supporting enterprise systems in federal or DoD environments.

• Experience troubleshooting complex backend and integration issues.

• Experience delivering code and system changes in Agile development environments.

Technical Knowledge (Required)

• Strong proficiency with RESTful API design, JSON standards, and schema modeling.

• Experience with API gateways, routing layers, and middleware (e.g., Kong, Apigee, AWS API Gateway).

• Strong understanding of authentication/authorization (OAuth2, SAML, JWT).

• Knowledge of secure coding practices and DoD cybersecurity requirements.

• Experience with integration patterns (synchronous/asynchronous, event-driven, message queues).

Technical Knowledge (Preferred)

• Experience with GraphQL API development.

• Experience with AWS cloud-native integration services (Lambda, API Gateway, EventBridge).

• Familiarity with microservices, container orchestration, and service mesh architectures.

Certifications

Required:

• CompTIA Security+

Preferred:

• AWS Developer or Architect certification

• ITIL v4 Foundation

• Integration or API architecture certifications

Skills

• Strong analytical and problem-solving abilities for complex integration challenges.

• Excellent communication and documentation skills.

• Ability to architect secure, scalable API solutions aligned with enterprise goals.

• High attention to detail and strong discipline around versioning and governance.

• Ability to collaborate across engineering, cloud, and cybersecurity teams.