Principal Software Engineer - C/C++ Linux/Unix, Cloud

Pune💼 Full-time🗓 2026-06-04 → 2026-09-26

Core

Design and implement next-generation, highly scalable and low-latency ad server features handling 1 trillion+ requests per day.

Role type

Principal Software Engineer (C/C++ Linux/Unix, Cloud)

Builds

High-scale ad server platforms and functionality modules

Domain

Digital Advertising / High-Performance Systems

Deliverable

production ML models | product features

Required skills

C/C++, Linux/UNIX system programming, algorithm design, advanced data structures, software architecture, multi-threading, multi-processing, memory management, database management (MySQL), scripting (Perl/Python/Shell), troubleshooting production issues, code review

Preferred skills

Go language, generative AI tools usage, prompt engineering, AI-assisted coding, clean modular code design

Technologies

C/C++, Linux, UNIX, MySQL, Perl, Python, Shell, GitHub Copilot, ChatGPT, Claude, Cursor, Windsurf

Responsibilities

Research, learn, design and build highly reliable, available and scalable platforms; Perform code and design reviews; Troubleshoot issues with existing features live on production; Be the owner of one or more functionality module and point of contact for it

Seniority

Principal, hands-on IC with strategy & mentorship

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About PubMatic

PubMatic is one of the world’s leading scaled digital advertising platforms, offering more transparent advertising solutions to publishers, media buyers, commerce companies and data owners, allowing them to harness the power and potential of the open internet to drive better business outcomes. Founded in 2006 with the vision that data-driven decisioning would be the future of digital advertising, we enable content creators to run a more profitable advertising business, which in turn allows them to invest back into the multi-screen and multi-format content that consumers demand.