Principal Software Engineer at PubMatic

Compensation

$200,000 – $228,750/yr

Setup: Hybrid
Location: Redwood City, California
Type: Full-time
Level: not_specified
Posted: Jul 14, 2026

Description

PubMatic is looking for an experienced Principal Software Engineer specializing in Ad Tech, specifically focusing on Golang-based real-time bidding systems. The role involves leading the design and development of scalable, low-latency buy-side ad tech systems, owning critical components like bidding and optimization stacks, mentoring engineers, and collaborating with various teams to achieve performance outcomes.

Required Skills

Golang
real-time bidding systems
campaign pacing and optimization algorithms
DSP / performance advertising domains
C/C++
Kafka
Flink
Spark
SQL
PostgreSQL
Snowflake
BigQuery
AWS
GCP
Azure
Docker
Kubernetes

Additional Information

Required Previous Experiences: Eight plus years of software engineering experience, with significant depth in ad tech / performance advertising/Building DSP bidder (Buy side).
Strong hands-on experience with Golang in building low-latency, high-scale backend systems.
Proven experience designing and operating real-time bidding platforms, bidders, or ad serving systems.
Deep understanding of campaign pacing, budget allocation, and performance optimization algorithms.
Experience with streaming and distributed systems (Kafka, Flink, Spark Streaming).
Strong familiarity with OpenRTB, VAST, and programmatic advertising workflows.
Solid knowledge of SQL, PostgreSQL and large-scale analytics platforms (Snowflake, BigQuery, or similar).
Experience with cloud platforms (AWS, GCP, or Azure) and containerized environments (Docker, Kubernetes).
Strong foundation in data structures, algorithms, and distributed system design.
Experience working cross-functionally with product, data science, analytics, and ML teams.
Demonstrated ability to own systems end-to-end, influence architecture, and deliver at scale.
Preferred Qualifications: Excellent communication skills with the ability to drive technical direction and mentor others.

About PubMatic

PubMatic

ad tech

PubMatic is an AI-powered ad tech company delivering measurable advertising performance through a unified platform connecting buyers, publishers, data partners, and commerce media across CTV, mobile app, and omnichannel environments. Its publisher platform offers yield optimization, data monetization, premium demand access, and transparent insights; its buyer platform offers media buying, curated audiences, real-time insights, and transparency.