Jhorkman Bernal

• Architected hexagonal-architecture microservices in Java 17 + Spring Boot serving high-traffic financial workloads for major banking clients. • Implemented event-driven pipelines with Apache Kafka, reducing inter-service latency by 35% and decoupling critical payment and account services. • Built reactive microservices with Spring WebFlux / Project Reactor, enabling non-blocking, high-throughput data pipelines for concurrent banking operations. • Led TDD adoption with JUnit 5 & Mockito across multiple teams, raising test coverage above 85% and reducing production incident rates significantly. • Designed layered Redis caching (L1 Caffeine + L2 Redis) with generic CacheService abstractions to solve type-erasure issues in reactive pipelines — deployed across 4+ microservices. • Implemented OAuth 2.0 / OIDC security layer with multi-provider support (Auth0, Ping, AWS Cognito), account linking via normalized user identity model, and backend Google id_token validation. • Optimized observability stack (Prometheus, Loki, Grafana), cutting average API response time by 20%.

• Built microservices for banking customer onboarding and loan processing workflows, improving processing speed and compliance traceability. • Applied TDD and BDD methodologies with JUnit 5 and Mockito; delivered services with full regulatory compliance and >80% test coverage. • Designed DynamoDB data models and Redis caching strategies for high-read financial data APIs.

• Developed microservices and process-automation components for government information systems, ensuring strict compliance with regulatory and business rules. • Led requirements-gathering sessions with stakeholders; conducted POCs to reduce estimation risk and delivered detailed technical specifications. • Introduced unit testing practices across the team, improving delivery predictability.

• Led microservices migration for ElectroHuila (regional utility), integrating Spring Boot with Kafka and Netflix OSS for service discovery and resilience. • Reduced deployment times by 50% by coordinating CI/CD pipelines with Jenkins and Docker Compose. • Mentored junior developers and enforced hexagonal architecture and clean code standards across the team. • Developed the Occupational Health Management System (GISHE) under Colombian regulatory standards (SGSST).

• Delivered REST APIs, database integrations, and automation solutions for various clients using Java, Spring, Node.js, and PostgreSQL in agile environments.