API Engineer

API Engineer (Backend / Integration)3 month+ Contract (High Likelihood for Extension) 100% Remote Overview:Brooksource is currently seeking an experienced API Engineer for one of our clients in the Health Insurance space to design and build secure backend services that enable integration between internal healthcare systems and external platforms, such as Availity. In this role, you will help develop a new API layer that exposes eligibility and benefits data from our client's internal systems, enabling providers to access this information in real time through Availity. The work will involve building secure RESTful services, integrating with existing SQL/Postgres data sources, and deploying APIs within a cloud-based environment. This is a hands-on engineering role focused on backend API development, data integration, and secure external system connectivity. Key Responsibilities: Design and develop secure RESTful APIs using Java (Spring Boot) to expose eligibility and benefits data to external platforms. Build backend services that integrate with existing SQL/Postgres databases and internal systems. Translate internal data structures into external API schemas aligned to Availity specifications. Implement authentication, authorization, and API security controls such as OAuth, token-based authentication, and encryption. Develop request/response models, validation logic, and standardized error handling. Optimize API performance and ensure services can handle high-volume provider queries. Support the implementation of API gateways and external access layers. Work with architects and engineering teams to design scalable and maintainable integration patterns. Implement logging, monitoring, and observability to support operational visibility and troubleshooting. Participate in integration testing with Availity sandbox environments and help address integration issues. Support CI/CD pipelines and assist with deployment across development, testing, and production environments. Contribute to documentation for API endpoints, integration flows, and system architecture. Required Experience: Strong experience building REST APIs using Java, preferably with Spring Boot. Experience developing backend services that integrate with relational databases such as SQL Server or Postgres. Strong understanding of API design principles, including request/response modeling, error handling, versioning, and performance considerations. Experience implementing secure APIs, including authentication, encryption, and access control. Experience deploying applications in cloud environments such as AWS or Azure. Experience working on system integration projects, connecting internal systems with external platforms or partner systems. Ability to troubleshoot and optimize backend services in distributed environments. Nice to Have: Experience working in healthcare or payer environments, particularly around eligibility, benefits, or claims data. Familiarity with healthcare data standards such as EDI (270/271), HL7, or FHIR. Experience integrating with external partner platforms or provider networks. Experience working with API management platforms such as Azure API Management, Apigee, Kong, or MuleSoft. Familiarity with containerization and DevOps tools such as Docker and CI/CD pipelines. Experience building APIs that support high-availability or high-throughput environments. Disclaimer: Brooksource, Medasource, and Calculated Hire are part of the Eight Eleven Group family of companies and operate under Eight Eleven Group, LLC. All employees receive the same benefits, policies, and terms of employment. EEO:We are committed to creating an inclusive environment for all employees and applicants. We do not discriminate on the basis of race, color, religion, creed, sex, sexual orientation, gender identity or expression, national origin, ancestry, age, disability, genetic information, marital status, military or veteran status, citizenship, pregnancy (including childbirth, lactation, and related conditions), or any other protected status in accordance with applicable federal, state, and local laws. Benefits & Perks:Brooksource offers competitive medical, dental, vision, Health Savings Account, Dependent Care FSA, and supplemental coverage with plans that can fit each employee’s needs. We offer a 401k plan that includes a company match and is fully vested after you become eligible, paid time off, sick time, and paid company holidays. We also offer an Employee Assistance Program (EAP) that provides services like virtual counseling, financial services, legal services, life coaching, etc. Pay Disclaimer:The pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law. Pay: $70.00 - $75.00 per hour Benefits: Dental insurance Health insurance Vision insurance Work Location: Remote