Software Engineer Specialists-Payments API Platform (Real Time & Event Driven)

About the role

FIS Management Services, LLC seeks Software Engineer Specialists-Payments API Platform (Real Time & Event Driven) in Jacksonville, FL.

Responsibilities

• Design, develop, and govern a companywide API and event platform, defining canonical models, structured data contracts, and versioning to enable interoperable, audit ready integrations.
• Evaluate system specifications for complex business requirements and prepare computer based solutions, and analyze problems in terms of detailed system and cloud resource capabilities to ensure scalability and resilience.
• Lead the architecture and operation of 24×7×365, low-latency services with documented availability objectives and continuous operations patterns including active-active, automated failover.
• Establish and enforce security architecture for digital transactions using recognized frameworks, tokenization, and hardware-backed key management with validated cryptographic modules.
• Implement OAuth 2.0, JWT, TLS, RBAC, and secrets management.
• Integrate strong customer authentication where required, achieving zero high severity audit findings, SAST/DAST ≥90% coverage, and 100% on-schedule key rotations.
• Design and develop RESTful and event driven APIs using modern technologies including Java/Spring Boot, NET Core, Node.js, and Python Flask, with automated CI/CD.
• Set the reliability engineering program for APIs and event pipelines by defining SLIs/SLOs, implementing error-budget governance, standardizing runbooks and chaos/resiliency tests, and improving health.
• Implement end-to-end observability including traces, metrics, and logs with correlation and golden-signal dashboards.
• Engineer transaction integrity via idempotency, deduplication, replay/retry semantics, and safe-retry keys to deliver exactly-once–like outcomes.
• Own API spec governance for synchronous HTTP and asynchronous events—compatibility rules, deprecation policy, and contract/conformance tests.
• Drive performance engineering for high throughput, low latency services through partitioning, indexing, memory/GC tuning, and hot path optimizations.
• Lead structured data migration and interoperability with mapping guides, reconciliation controls, and cutover/rollback plans.
• Produce and maintain technical documentation—API specs, integration guides, reference adapters/SDKs, and test harnesses.
• Collaborate with product, engineering, compliance, and operations to translate requirements into measurable outcomes.
• Chair design/risk reviews for ADRs, threat models, data classification, segregation of duties to align with risk, audit, and compliance.
• Verify program logic by preparing representative test data and executing trial runs in lower/UAT environments.
• Plan and oversee program level deliverables—dependencies, technical risks, cross-team cutovers.

Requirements

• Bachelor’s degree or foreign equivalent in Computer Science, Computer Engineering, or related field and ten (10) years of progressively responsible experience in the job offered or a related occupation
• Evaluating systems specifications for complex business requirements and developing and preparing computer based solutions; analyzing problems in terms of detailed equipment requirements and capabilities, including those related to scalable applications and cloud based resources; troubleshooting complex technical issues; architecting, designing, and developing RESTful and/or event driven APIs using modern technologies including Java/Spring Boot; implementing industry standard security in API design including OAuth 2.0, JWT, TLS encryption, role based access controls, and secrets management

Qualifications

• In the alternative, the employer will accept a Master’s degree in the above listed fields and eight (8) years of experience in the above listed skills.