Public Health API Engineer

Flourish and Thrive Labs is a woman-owned consulting firm specializing in public health solutions. They are seeking a Senior API Engineer who will be responsible for designing and maintaining APIs that support public health operations, ensuring reliable data integration and coaching less experienced engineers.

Responsibilities:

• Design, build, and maintain APIs and integrations across the API-led layers (System, Process, and Experience)
• Lead API architecture discussions and contribute to solution design alongside architects
• Audit inherited APIs and integrations and propose corrections, including restructuring services that sit at the wrong architectural layer
• Coach client technical teams on API best practices, helping them move from ad-hoc patterns to sound API-led design
• Mentor junior engineers through pair programming, code reviews, and direct guidance
• Write clean, well-documented, testable code with robust error handling, retry logic, and observability
• Identify and resolve complex integration challenges across Salesforce, notification platforms, and other connected systems
• Collaborate with Salesforce developers and QA to ensure end-to-end quality across integrated workflows
• Translate public health workflows into reliable, scalable API and integration patterns
• Contribute to code reviews with constructive, supportive feedback

Requirements:

• 5+ years of hands-on API development and systems integration experience at a senior level
• 1-3 years working for a governmental public health agency (local, state, federal, or tribal)
• Strong backend engineering background in Java, Python, Node.js, or a comparable language
• Experience working in Agile or SAFe environments
• Strong collaboration and communication skills
• Track record of mentoring or guiding less experienced engineers, including across organizational boundaries
• Expertise in API-led connectivity and clear judgment on when a service belongs at the System, Process, or Experience layer
• Experience designing API contracts with OpenAPI Specification (OAS), RAML, or equivalent
• Deep experience with REST and SOAP APIs, including OAuth 2.0, mTLS, and JWT
• Strong data transformation skills across JSON, XML, and flat-file formats
• Familiarity with asynchronous messaging patterns, including queues, topics, and event streams (SQS, SNS, Kafka, Anypoint MQ, or similar)
• Experience deploying and operating services in cloud or hybrid environments (AWS preferred)
• Proficiency in automated unit and integration testing, with meaningful coverage of integration flows
• Strong understanding of error handling, retry strategies, and observability in distributed systems
• Experience with API gateways and lifecycle management
• Experience with version control (Git) and CI/CD practices (Maven, GitHub Actions, or comparable tooling)
• MuleSoft development experience on Mule 4, including Anypoint Studio, API Manager, Runtime Manager, DataWeave, and MUnit
• MuleSoft Certified Developer or MuleSoft Certified Integration Architect
• Experience integrating with Salesforce (Bulk API, Streaming API, Platform Events, Change Data Capture)
• Familiarity with HIPAA compliance requirements and PHI handling in integrations
• Experience with SAFe Agile methodology
• Background in public health data systems, including HL7, FHIR, immunization information systems (IIS), or electronic case reporting (eCR)
• Experience with notification platforms and event-driven architectures
• Experience building or consuming AI and LLM APIs (AWS Bedrock or similar)