Joseph Ukeje

• Java 21, Spring Boot 3.x, Spring AOP/AspectJ, Spring WebFlux, TypeScript, Node.js, Go (Gin), ReactJS, PostgreSQL, Oracle, Redis, MongoDB, IBM MQ, RabbitMQ, Docker, Kubernetes, Prometheus, Grafana, Veracode, ISO 20022/SWIFT, Flyway, JUnit 5, Mockito, Jenkins • Took full end-to-end ownership of ISO 20022 payment flow integration (pacs.008, pacs.002, pacs.028) – handling protocol-level XML canonicalisation (C14N), digital signatures, namespace standardisation, and OffsetDateTime edge cases causing production failures in high-volume outbound flows. • Built and maintained a Netty-based TCP server for the IRIS engine, handling low-level network transport, connection lifecycle, and protocol framing – going well beyond standard Spring Boot abstractions into raw Java networking. • Implemented gRPC-Java integrations for blockchain RPC checks, defining protobuf service contracts and handling serialisation, streaming, and error propagation across distributed service boundaries. • Architected a non-intrusive cross-cutting security layer using Spring AOP and AspectJ, enabling transparent fraud evaluation via custom annotations without polluting core business logic. • Built and deployed Go (Gin) microservices for high-throughput internal API gateway layers, leveraging Go’s concurrency model for performant, low-latency payment processing pipelines. • Designed scalable Node.js/TypeScript REST APIs and service layers for partner integration validation and certification, improving onboarding efficiency by 50%. • Developed RabbitMQ event-driven async pipelines across 5+ distributed microservices; built GraphQL (Apollo) APIs consumed by React.js dashboards. • Used JDBCTemplate for fine-grained SQL control against Oracle and PostgreSQL; built server-side HTML email templating and SMS notification pipelines in Java. • Built Prometheus/Grafana observability infrastructure; resolved 100% of Veracode high-severity vulnerabilities; hardened Docker/Kubernetes deployments for Tier-1 banks. • Authored comprehensive SDK documentation, API references, developer handbooks, and architecture specs for internal teams and external partner integration processes.

• Java, C#, Node.js, TypeScript, Express.js, ReactJS, Vue.js, AWS, Docker, Jest, Jenkins, Git, Agile • Architected high-performance Node.js/TypeScript backend services for Huawei Cloud’s enterprise B2B platform – REST APIs, custom Express.js middleware pipelines, and async event-driven workflows for cloud resource provisioning at scale. • Built Java backend microservices supporting Huawei Cloud platform APIs; developed C# (.NET) internal tooling for cloud resource provisioning workflow automation. • Delivered partner rewards management service end-to-end (data model, API contracts, business logic, Vue.js UI); owned CI/CD pipeline architecture cutting deployment times by 25%. • Enforced Jest/Postman testing standards achieving 95% bug-free release rate; accelerated delivery velocity by 20%.

• Java, Spring Boot, Spring Data JPA, TypeScript, Node.js, PostgreSQL, MongoDB, RabbitMQ, GraphQL (Apollo), JUnit 5, Maven • Independently designed and built a Spring Boot microservice integration layer connecting 5 distributed services with Node.js/TypeScript/GraphQL API layer – reducing QA data errors by 50%. • Implemented RabbitMQ event-driven messaging; refactored Java codebases cutting response times by 15%; expanded JUnit 5 and Jest coverage to 85%+.

• React Native, Node.js, Express.js, TypeScript, JWT, OAuth 2.0, PostgreSQL, GCP, Twilio • Built Node.js/Express.js REST APIs for a cross-platform React Native mobile app; designed JWT + OAuth 2.0 authentication with Twilio 2FA (OWASP Top 10 compliant); managed GCP infrastructure reducing cloud costs by 18%.

• ReactJS, TypeScript, JavaScript, Node.js, Python, Django, Docker, Git, Agile, RPA • Redesigned 6 enterprise web applications boosting page load speeds by 35%; migrated backend services to Django cutting API response times by 200ms; applied RPA analytics to automate performance reporting.

• Java, C#, Node.js, TypeScript, React.js, .NET, ASP.NET MVC, PostgreSQL, MySQL, Git, Linux • Independently delivered full-stack Java and Node.js applications; managed Linux server environments; wrote SDK documentation and API integration guides for developer audiences.

React Masterclass Fundamentals

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Oracle Cloud Infrastructure Developer Certificate

Oracle

Oracle Cloud Infrastructure DevOps Certificate

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Oracle 12c Administrator / Java SE 8 (OCA/OCP)

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UiPath RPA Certification

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Udemy Java Masterclass

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