Open to opportunities

Emmanuel User

@emmanueluser20

Message

I build secure, high-performance Java APIs for core banking services across seven countries.

Pakistan

Message

What I'm looking for

I'm looking to build secure, reliable backend services where I can improve API performance, data integrity, observability, and delivery automation.

At HBZ Services, I develop and maintain Java/Spring Boot REST APIs for secure core banking operations across seven countries. I implemented Redis distributed caching that reduced average API latency by 40–60% and database load by 35%.

I design relational schemas, manage zero-downtime Liquibase migrations, optimize SQL and persistence layers, and secure multi-service access with Keycloak. I also standardize API contracts and delivery workflows through OpenAPI/Swagger, Postman, GitLab CI/CD, and SigNoz monitoring.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer

Current

HBZ Services

Jun 2025 - Present (1 year 3 months)

Developed and maintained Java/Spring Boot REST APIs for secure core banking services supporting operations across 7 countries. Implemented Redis distributed caching, reducing average API latency by 40-60% and database load by 35%. Designed relational schemas and managed zero-downtime Liquibase migrations. Optimized SQL queries and persistence layers to improve transaction throughput. Centralized a

Java Spring Boot REST APIs Redis SQL Liquibase Keycloak OpenAPI Swagger Postman Gitlab CI SigNoz Docker PostgreSQL MongoDB AWS

Education

Degrees, certifications, and relevant coursework

National University of Computer and Emerging Sciences

Bachelor of Science, Computer Science

2021 - 2025

Grade: 3.57/4.0

Bachelor of Science in Computer Science with a CGPA of 3.57/4.0. Coursework included Data Structures, Database Systems, Information Retrieval, and Web Development.