Open to opportunities

Ahmad Hassan

@ahmadhassan13

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Senior Java engineer specializing in scalable backend systems, microservices, and performance optimization.

Pakistan

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What I'm looking for

I seek backend roles focused on scalable microservices, performance optimization, and secure architectures within collaborative Agile teams that value quality and continuous improvement.

I am a results-driven Senior Java Engineer with over five years of experience designing, developing, and maintaining scalable backend systems and RESTful APIs. I specialize in Core Java, Spring Boot, Hibernate, microservices, and cloud-ready architectures, and I prioritize high-quality, maintainable code.

I have led migrations from monoliths to microservices, implemented resilient messaging and tracing solutions, and delivered measurable performance and reliability improvements—reducing latencies, technical debt, and operational costs across fintech and restaurant platforms.

I collaborate effectively in Agile/Scrum teams, emphasize testing and secure architectures, and continuously learn modern backend practices to solve complex technical challenges and drive business outcomes.

Experience

Work history, roles, and key accomplishments

Current

Senior Java Engineer

Current

Softoo

Aug 2024 - Present (1 year 4 months)

Reduced risk assessment time from 20 minutes to 1–2 minutes saving ~$5.6K per resource per year and automated 5,000+ transactions/month; built a double-entry ledger and BFF architecture delivering 25% faster API responses and 85% fewer manual errors.

Microservices PostgreSQL BFF Performance Optimization Event Driven Architecture

Java Engineer

Innowi Inc.

Jun 2023 - Aug 2024 (1 year 2 months)

Migrated a monolithic Spring MVC platform to Spring Boot/Spring Cloud, cutting deployment bottlenecks by 50% and unified DoorDash/UberEATS flows to reduce order processing time by 35% for 100K+ monthly transactions.

Spring Boot Spring Cloud Resilience4j OpenFeign

Java Engineer

U2Ventures

Jun 2019 - May 2023 (3 years 11 months)

Engineered Spring Boot backends and field-force tracking system reducing manual reporting by 60% for 500+ agents and built a payment engine processing 50K+ transactions/month while ensuring 99.5% uptime across ERP modules.

Spring Boot Apache Tomcat Geolocation RBAC Performance Tuning Scalability

Associate Consultant

Systems Limited

Jul 2021 - Aug 2022 (1 year 1 month)

Built RESTful APIs with 98% unit test coverage and secured endpoints via Spring Security + JWT, refactored legacy modules to reduce code duplication by 40% and improved SQL Server query performance by 25%.