Mayank Harnotiya
Java Backend Engineer
About
Java Backend Engineer with hands-on experience in microservices architecture, REST API development, and cloud-based backend systems. Built production-grade services handling 10,000+ daily requests using Spring Boot, MySQL, Redis, and Kafka. Skilled in JWT/OAuth2 authentication, Role-Based Access Control (RBAC), and full SDLC, from development and testing to production incident resolution. Strong in DSA (500+ problems solved) with hands-on exposure to AWS (EC2, S3, Lambda).
Skills & Expertise (30)
Work Experience
Associate Software Engineer
VRIZE India Pvt. Ltd.
Sep 2025 - Feb 2026
Developed and maintained Spring Boot microservices handling 10,000+ daily requests; optimized performance via connection pooling and query tuning, reducing API latency by 25%. Contributed to monolith-to-microservices migration using Spring Cloud (Eureka, Feign Client, Gateway), improving system scalability by 30%. Integrated Spring Security with JWT and OAuth2.0; implemented RBAC across REST endpoints and refactored Hibernate JPA/JPQL queries, eliminating N+1 issues and reducing DB execution time by 40%. Built Kafka consumers for async event processing; resolved production incidents across Agile sprints, improving uptime from 97% to 99.5%; maintained 80%+ test coverage with JUnit 5 and Mockito.
Software Engineer Intern – Backend
C-DAC (Centre for Development of Advanced Computing, Govt. of India)
Jan 2025 - Jun 2025
Developed backend services for CyberShakti – a government cybersecurity training platform serving 1,000+ users – using Spring Boot and PostgreSQL; designed and delivered 10+ REST APIs supporting modules for training management, progress tracking, certification, and reporting, integrated with a React.js frontend. Implemented Role-Based Access Control (RBAC) using Spring Security aligned with government standards; enforced OWASP Top 10 secure coding practices and applied PostgreSQL indexing strategies, reducing report-generation query time by 35%.
Education
Master of Computer Applications (MCA) - National Institute Of Technology Raipur (NIT Raipur)
2022 - 2025 · Afghanistan
Bachelor of Science (Hons.) – Computer Science - Deen Dayal Upadhyaya College, University of Delhi
2018 - 2021 · Afghanistan
Certifications
Event Head, TECHMARATHON’21
· 2021
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Skills (30)
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