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Sr. Software Engineer– API & Developer Platform

U.S. BankOak Park, ILL6 LeadSeptember 22nd, 2026
Overview In this role you will design and build the next generation of enterprise API platform capabilities, enabling scalable backend services and developer experiences. You work with cross-functional teams to advance architecture, governance, and AI-enabled features while mentoring engineers and driving technical excellence. You’ll shape API onboarding, lifecycle, and security, and push for automation and observability across production systems. This is a hands-on, impact-driven position in a modern, cloud-native environment that values collaboration and innovation. Compensation / BenefitsHealthcare (medical, dental, vision)Life insurance optionsDisability insuranceParental leave401(k) with company matchPaid vacation and holidays" , ResponsibilitiesDesign, develop, deploy, and support enterprise API platform capabilities (onboarding, governance, catalog management, developer portals, lifecycle management)Build scalable backend services using Java, Spring Boot, Node.js, REST APIs, GraphQL and microservicesDevelop modern web applications and developer-facing experiences with React and TypeScriptApply architecture principles (DDD, event-driven, API-first, microservices)Drive automation across API registration, testing, security controls, and CI/CD with DevSecOpsMonitor, troubleshoot, and optimize production environments for reliability and performanceIntegrate AI-powered capabilities within platform services with governance and responsible AI practicesLead code reviews, mentor engineers, contribute to technical strategy, and collaborate with cross-functional teams Key requirementsBachelor’s degree or equivalent work experienceFive to six years of relevant experienceStrong experience with Java, Spring Boot, Node.js, and modern API technologiesHands-on API design and governance experience (OpenAPI/Swagger, API lifecycle)Proficiency with React, TypeScript, and responsive UI developmentKnowledge of DDD, event-driven systems, integration patterns, and modern software architecturesExperience with Docker, Kubernetes, CI/CD, automated testing, infrastructure automation, and cloud-native practicesDeep understanding of API/security (OAuth2, OpenID Connect, JWT, secure coding, authZ/authN frameworks)Experience with relational and NoSQL databases (PostgreSQL, Aurora, MongoDB) and data modeling/performanceExperience with observability (logging, monitoring, tracing, alerting) and operational dashboardsExperience integrating AI/GenAI into enterprise apps and knowledge of prompt engineering and governanceExperience with asynchronous messaging and event streaming technologiesMentorship and leadership of engineersCollaborative, cross-functional teamworkStrong communication and code-review leadershipJavaSpring BootNode.js