About
Hi, I'm Karthik. A Founder and Engineering Leader with 15+ years of experience building and scaling world-class products and teams.
I enjoy mentoring people, building strong engineering cultures, and turning ambitious ideas into scalable, reliable systems.
I am a full-stack developer at heart. I build highly scalable backends and beautiful frontends. The developer tools and open source libraries built by me are used by millions of developers worldwide.
Highlights
- Founder at OneCompiler (12.8M+ developers, 100+ customers).
- Previously: Senior Engineering Manager at HackerRank.
- 15+ years building products in developer tooling, reputation management, and supply chain.
- Built systems processing ~100M data points daily and led engineering teams at scale.
- Saved $2M+ by cracking bot blockers using Machine Learning with SparkML.
Work Experience
Bootstrapped, architected and built OneCompiler with a vision of making coding more accessible. Scaled it to 12.8M+ users across 100+ tech stacks. Owned every vertical as a solo founder — product, infrastructure, hiring, growth, SEO, business operations — all while scaling the platform to support multi-million code executions daily.
Managed HackerRank's Interviews product. Led a team of 20 engineers and helped the product to scale 1000+ concurrent "Video + Live Code" interviews globally. Involved in building HackerRank's next-generation tech stack.
Architected and built 15+ microservices. Managed a team of 15 engineers. Built API and scraping frameworks, collecting 100M+ data points daily. Saved $2M+ by cracking bot blockers using Machine Learning with SparkML. Created DSLs, social integrations, CI/CD pipelines, self-healing capabilities, and high-performing testing frameworks.
Worked on optimising the in-house ETL tool, and reduced the batch timings from 8+ hours to under 20 minutes. Built MDM tools for managing and syncing JDA services data. Built a PSR testing framework. Contributed to JDA's PAAS tools.
Worked on 3 projects related to supply chain. Contributions include converting on-premise applications to the SAAS model, SSO implementation, cross-browser compatibility and logistics route optimisation.