Jobs / United States / Pubmatic INC
Principal Software Engineer - PubMatic AgenticOS (Buy Side Bidding Platform)
Pubmatic INC · 🇺🇸 Redwood City, US
Sponsorship verdict
Sponsorship possible
One solid signal, not two — worth applying, and worth asking about sponsorship early.
- Employer is on a government sponsor recordThe US Department of Labor certified 15 H-1B/E-3 labor condition applications for this employer between Oct 2025 and Jun 2026 (latest Jun 2026) — the step every H-1B hire needs first. USCIS also records 14 H-1B approvals in FY2023. Source: LCA disclosure data (US Department of Labor (OFLC)).
- The posting doesn’t mention sponsorshipSilence isn’t a refusal — ask the recruiter before investing much time.
- No salary bar for this routeH-1B has no fixed salary bar: the employer must pay at least the prevailing wage for the role and area. Cap-subject employers enter a lottery weighted by wage level. Source: https://www.federalregister.gov/documents/2025/12/29/2025-23853/weighted-selection-process-for-registrants-and-petitioners-seeking-to-file-cap-subject-h-1b, rules effective 2026-02-27.
- What Pubmatic INC paid sponsored hires in similar roles2 certified filings for “Senior Software Engineer” (Software Developers) in CA: $136k–$162k, median $149k. Most were filed at wage level I (50%) — 1 lottery entry, ≈15% projected selection odds for cap-subject employers. Source: US Department of Labor LCA disclosure data (Oct 2025 – Jun 2026).
- Confirmed live todayWhen a source last listed this job as open.
US H-1B: cap-subject employers enter a lottery weighted by wage level — Level I gets 1 entry, Level IV gets 4 (DHS projected selection odds ≈15% at Level I to ≈61% at Level IV). Universities and non-profit research employers are cap-exempt. The $100,000 fee for new petitions from abroad is currently blocked by a court order (appeal pending).
A verdict summarises public evidence; it is not legal advice and never a guarantee — the employer and the immigration authority decide. Sign in to factor in where you can already work.
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Sponsor Radar — Pubmatic INC
The US Department of Labor certified 15 H-1B/E-3 labor condition applications for this employer between Oct 2025 and Jun 2026 (latest Jun 2026) — the step every H-1B hire needs first. USCIS also records 14 H-1B approvals in FY2023. Source: LCA disclosure data (US Department of Labor (OFLC)).
Past sponsorship or register membership never guarantees sponsorship for this vacancy or for you. Full Sponsor Radar for Pubmatic INC →
About the role
About the Role We are seeking an experienced Principal Software Engineer - PubMatic AgenticOS to lead the design and development of highly scalable, low-latency buy-side ad tech systems. This role is ideal for someone with deep expertise in Golang, real-time bidding systems, and campaign pacing and optimization algorithms, with strong exposure to DSP / performance advertising domains. As a technical leader, you will own critical components of the bidding and optimization stack, influence system architecture, mentor senior and junior engineers, and work closely with product, ML, and data teams to drive measurable performance outcomes across large-scale advertising campaigns. What You'll Do • Architect, design, and build high-throughput, ultra-low-latency real-time bidding systems for buy-side advertising platforms. • Lead development of bidder services handling millions of QPS with strict latency and reliability SLAs using Golang/C/C++. • Design and implement campaign pacing, budget management, and delivery optimization algorithms across multiple objectives (CPA, ROAS, CTR, CVR). • Own core systems for deal execution, auction participation, bid shading, and supply path optimization. • Build and evolve real-time and near-real-time data pipelines for impressions, clicks, conversions, and attribution using Kafka, Flink, or Spark. • Collaborate closely with ML engineers to productionize models such as bid optimization, contextual bandits, reach forecasting, and incrementality models. • Integrate and maintain support for programmatic advertising protocols (OpenRTB, VAST, CTV-specific standards). • Drive architectural decisions around scalability, fault tolerance, data consistency, and latency optimization. • Ensure data quality, governance, privacy, and compliance across the performance advertising stack. • Conduct deep performance profiling, latency tuning, and debugging of distributed systems in production. • Mentor engineers, set coding and design standards, and lead technical reviews across teams. • Evaluate and introduce new technologies, auction strategies, and optimization frameworks to keep the platform competitive. We'd Love for You to Have • 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. • Excellent communication skills with the ability to drive technical direction and mentor others. Qualifications: • Should have a bachelor’s degree in engineering (CS / IT) or equivalent degree from well-known Institutes / Universities. Additional Information Return to Office : PubMatic employees throughout the globe have returned to our offices via a hybrid work schedule (3 days “in office” and 2 days “working remotely”) that is intended to maximize collaboration, innovation, and