Tarun Koyalwar
Back End Developer at ProjectDiscovery.io
Earth, Texas, India
Summary
🤩
Rockstar🎓
Top SchoolTarun Koyalwar is a back-end developer with five years of experience focused on cybersecurity tooling and open-source impact, currently building core features for ProjectDiscovery.io’s projects like nuclei, httpx, and tlsx. A former full-time bug bounty hunter, he brings practical offensive security insight to hardening scanners, TLS data collectors, and HTTP tooling—work that includes improving OpenSSL integration, request signing, SARIF output, and TLS certificate parsing. He combines strong Go engineering skills with an appetite for AI and NLP experimentation, often contributing subtle but critical fixes that boost reliability and parsing accuracy across large OSS codebases. A BTech graduate from IIIT Pune, Tarun is driven by democratizing security and enjoys turning vulnerability research into production-ready defenses.
5 years of coding experience
Bachelor of Technology - BTech, Computer Science, Bachelor of Technology - BTech, Computer Science at Indian Institute of Information Technology, Pune
Github Skills (23)
ss10
ssl10
vulnerability-scanners10
security-scanner10
it-security10
http10
sslv310
base64-encoding10
security10
go10
openssl10
cryptography10
security-scan10
cert9
cybersecurity9
Programming languages (11)
Github contributions (5)
projectdiscovery/nuclei
Nov 2022 - Jan 2023
Nuclei is a fast, customizable vulnerability scanner powered by the global security community and built on a simple YAML-based DSL, enabling collaboration to tackle trending vulnerabilities on the internet. It helps you find vulnerabilities in your applications, APIs, networks, DNS, and cloud configurations.
Role in this project:
Back-end Developer & Security Engineer
Back-end Developer & Security EngineerContributions:283 reviews, 20 commits, 180 PRs in 1 month
Contributions summary:Tarun primarily contributed to enhancing the security features and functionalities of the vulnerability scanner, Nuclei. Their work included improving the SARIF output format, implementing AWS signature support, and fixing issues with request signing. They also addressed critical bugs related to URL handling and parsing. These changes suggest a strong focus on back-end development, specifically in the area of network security and data parsing.
scannersecurity-toolsnuclei-engineattack-surfacesecurity
projectdiscovery/tlsx
Dec 2022 - Jan 2023
Fast and configurable TLS grabber focused on TLS based data collection.
Role in this project:Backend Developer & Security Engineer
Backend Developer & Security EngineerContributions:17 reviews, 9 commits, 11 PRs in 1 month
Contributions summary:Tarun primarily focused on bug fixes and improvements related to TLS/SSL security and functionality. Contributions include addressing issues with OpenSSL integration, OCSP revocation checks, and certificate parsing. The user also implemented an OpenSSL wrapper, added cipher support, and improved overall code quality. The changes suggest a focus on improving the security and reliability of the TLS grabbing tool.
sslconfigurablegrabberja3tls
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.