EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.

We are looking for a Chief Software Engineer (AdTech) to design and ship ultra-low-latency ad serving systems that run on the hot path. You will lead technical direction across ad serving, SSAI, RTB, and identity while staying hands-on in code and mentoring senior engineers. Apply now to help maximize auction economics by balancing latency, cost, and correctness.

Responsibilities

Architect and implement hot-path code as a hands-on individual contributor
Define technical direction for ad serving, SSAI, RTB and identity through design docs you author, defend, and revise as constraints change
Coach engineers by raising the standard on code review, production rigor, and how the team evaluates latency, cost, and correctness
Own auction-level economics and quantify the revenue-per-thousand-impression impact of latency and AWS spend on the ad path
Represent the company's technical stance with partners such as GAM, SSPs, DSPs, measurement vendors and IAB Tech Lab
Set hiring standards for future engineers and participate in the loop for every senior+ AdTech hire
Drive production ownership for systems that serve hundreds of millions of ad requests per day
Make and stand behind decisions to reject features that threaten latency, correctness, or unit economics

Requirements

7+ years of professional software engineering experience, including 5 years within an SSP, DSP, ad server, ad exchange, or CTV/OTT platform
Demonstrated production ownership of a platform serving at least hundreds of millions of ad requests per day
Deep expertise in at least one hot-path systems language (Go, Java, C++ or Rust), plus practical comfort in another
Strong fluency in JavaScript, Node.js and TypeScript for tooling, control-plane services, and the Prebid wrapper layer
Working-spec-level mastery of OpenRTB (2.x and 3.x), VAST (3 and 4), VPAID, VMAP and SIMID
Hands-on SSAI experience covering pod construction, manifest manipulation, ad stitching, and failure modes when delivering ads in HLS or DASH
Proven background in header-bidding architecture, including Prebid.js client-side, Prebid Server, wrapper design, and price-floor strategy
Engineer-level command of Google Ad Manager APIs, the line-item and key-value model, and known abstraction edge cases
AWS at-scale experience with EC2/EKS, ECS and Lambda, plus DynamoDB, Kinesis, MSK/Kafka and CloudFront
Solid distributed systems knowledge across queueing theory, backpressure, idempotency, hot-key mitigation and multi-region failover
Strong FinOps instinct with clear understanding of stack cost per thousand ad requests
Practical ability to use React where it intersects with ad-ops surfaces
Advanced proficiency in English (C1+)