Suman Kumar
@sumankumar4
Backend Java Developer building scalable microservices with faster, reliable enterprise APIs.
What I'm looking for
I’m a backend-focused Java Developer with 5 years of hands-on experience architecting and delivering scalable, high-performance enterprise applications. I specialize in Core Java, J2EE, Spring Boot, and microservices architecture.
I consistently improve production outcomes—enhancing reliability by 25% across 6+ distributed Java/Spring Boot microservices, reducing deployment time by 30% and errors by 35% through Jenkins & Docker-based CI/CD automation, and delivering high-traffic RESTful APIs (5,000+ daily requests) with 40% faster response times.
I design and secure RESTful services, resolving 100% of critical security vulnerabilities (XSS, CRLF, SSRF) across 15+ backend services. I also lead teams (mentored 5+ developers), deliver strong test coverage with JUnit/Mockito, and support accessibility with WCAG 2.1 backend enhancements.
Experience
Work history, roles, and key accomplishments
Engineered Spring Boot/Core Java microservices for telecom backends, reducing REST API latency by 40% and supporting high-volume transactions. Improved CI/CD with Jenkins and Docker, accelerating delivery by 20%, and strengthened security and test coverage using JUnit and Mockito.
Education
Degrees, certifications, and relevant coursework
Bakhtiyarpur College of Engineering
Bachelor of Technology, Computer Science & Engineering
Earned a B.Tech in Computer Science & Engineering at Bakhtiyarpur College of Engineering.
Availability
Location
Authorized to work in
Portfolio
leetcode.com/u/isuman2401Social media
Job categories
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