API Support Engineer (Tier 3)
New
D
DecisionPointAPI support
Source API remote eligibility restrictions: United StatesFull-TimeSenior
Salary not disclosed
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Job Details
- Experience
- Minimum 6 years of experience in API support, backend troubleshooting, or application technical support.
- Required Skills
- OAuthRESTful APIs
Requirements
- Hold an active Top Secret clearance supported by a Tier 5 background investigation.
- Have a bachelor’s degree in Information Systems, Computer Science, Software Engineering, or a related technical field.
- Have at least 6 years of experience in API support, backend troubleshooting, or application technical support.
- Have experience diagnosing API defects, schema mismatches, and integration failures.
- Have experience with JSON schemas, OpenAPI/Swagger specifications, and API documentation.
- Have experience troubleshooting OAuth2, SAML, and JWT authentication and authorization flows.
- Have experience supporting enterprise IT environments; federal or DoD mission experience is preferred.
- Have strong knowledge of REST APIs, endpoint communication, and data structures.
- Be familiar with middleware, integration layers, message brokers, and API health monitoring tools.
- Have experience analyzing logs from API gateways, application servers, or integration pipelines.
- Understand data mapping, transformation, and error-handling logic.
- Hold ITIL v4 Foundation and CompTIA Security+ certifications.
- AWS GovCloud integration patterns, event-driven architectures, asynchronous API workflows, and diagnostic scripting or automation are preferred.
Responsibilities
- Resolve complex API issues escalated from Tier 1 and Tier 2, including endpoint failures, schema mismatches, and authentication problems.
- Triage enterprise-wide API incidents involving integrations, middleware, and downstream systems.
- Diagnose data mapping issues, payload inconsistencies, and transformation logic errors.
- Reproduce issues with development and integration teams and validate fixes.
- Collect logs, analyze error patterns, and perform root cause analysis.
- Validate API behavior against OpenAPI/Swagger specifications, schemas, and version requirements.
- Assist in testing API changes, version upgrades, and integration adjustments before deployment.
- Document findings, resolutions, and recurring issue patterns in the enterprise knowledge base.
- Participate in Change Control Board processes when fixes affect production integrations.
- Guide application teams on API usage, integration best practices, and troubleshooting.
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