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ABHINAY KUMAR

@abhinaykumar

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Software Development Engineer focused on secure APIs, OAuth/JWT auth, and real-time stream processing.

India

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What I'm looking for

I’m looking to build secure, high-performance backend systems—owning auth/APIs, microservices, and real-time processing—where I can ship reliability-focused features, automate testing/monitoring, and grow deep in distributed systems.

I’m a Software Development Engineer from India, with a B.Tech in Electrical Engineering from IIT Jammu. At TraQez, I architect and build production backends—owning everything from authentication flows and API security to system reliability and automated testing.

I’ve delivered multi-provider OAuth 2.0 with PKCE, secure JWT session management, and a full API key management system with hashing, expiration policies, and REST APIs. I also built a real-time alerting engine using Kafka and Flink, plus a multi-tenant migration engine for automated schema versioning in high-concurrency environments.

From my internship, I developed backend systems around PostgreSQL data pipelines, password expiry reminders with BullMQ, and secrets/version history APIs with query optimization. I care about secure engineering practices, measurable performance (I improved API response times by 80%), and clean CI-integrated quality checks.

Experience

Work history, roles, and key accomplishments

Current

Software Development Engineer

Current

TraQez

Dec 2023 - Present (2 years 6 months)

Architected multi-provider OAuth 2.0 authorization with secure JWT session management (PKCE) and built an API key management system with hashing and expiration policies. Designed a Kafka/Flink real-time alerting engine and a multi-tenant migration engine; refactored backend APIs and introduced caching to improve response times by 80%.

OAuth 2.0 JWT REST APIs Apache Kafka Apache Flink API Security Jest CI CD

Software Developer Intern

TraQez

Sep 2023 - Nov 2023 (2 months)

Built PostgreSQL-backed services for AWS attack surface data, including APIs to fetch/manage records and automated S3-to-database data transfers. Developed password manager backend using Sequelize and BullMQ for background reminders, and implemented SonarQube integrations with GitHub/GitLab with CI/CD enforcement of secure coding practices.