Vaishak S
Systems & Backend Architect
Specializing in high-concurrency Java systems, secure transactional API design, and web app hardening.
Designing resilient architectures for high-concurrency services.
I build reliable backends utilizing Spring Boot, Redis, and PostgreSQL. Currently pursuing an M.Tech in Cyber Security at IIIT Sri City to combine core software design with threat modeling and cryptographic defenses.
Featured Work
Flash Sale Concurrency Engine
A high-concurrency backend built to process 5,000+ purchases/sec without database overselling. Resolves race conditions via Redis token-bucket inventory pre-decrements and transactional rollback buffers.
PayFlow Secure Fintech API
A banking API broker designed with transaction-safe wallet ledgers and stateless signature security. Mitigates state conflicts using isolating database locks and parses request structures strictly with validation DTO layers.
Background & Process
I approach systems development with a strong focus on database integrity, query optimization, and validation bounds. I analyze transaction sequences to eliminate race conditions and security leaks before they reach the production layer.
My online Master of Technology in Cyber Security at IIIT Sri City expands this focus. It provides rigorous academic foundations in threat modeling, cryptography, and access control policies that guide my architectural choices in microservices and web application design.
In my previous role as a Web Security Analyst II at Sitelock, I analyzed server compromises and hardened web configurations. This practical exposure to exploits shapes my current backend development practices, reinforcing a zero-trust model at the API gateway and database transaction boundaries.