Job Description

Company at a Glance

OpenX is focused on unleashing the full economic potential of digital media companies. We do this by making digital advertising markets and technologies that are designed to deliver optimal value to publishers and advertisers on every ad served across all screens.

At OpenX, we have built a team that is uniquely experienced in designing and operating high-scale ad marketplaces, and we are constantly on the lookout for thoughtful, creative executors who are as fascinated as we are about finding new ways to apply a blend of market design, technical innovation, operational excellence, and empathetic partner service to the frontiers of digital advertising.

We’re seeking a Staff Software Engineer with strong platform and cloud expertise to shape and scale the next generation of our real-time integrations. You will architect, build, and deliver reliable, secure services that enable partners to connect with the OpenX platform.

In this role, you’ll lead major technical initiatives, influence architectural decisions, mentor engineers, and ensure our integrations and platform components operate with exceptional performance and reliability.

An ideal candidate is:

Open-minded – Welcomes feedback, learns from failure, and adapts quickly to change.

Proactive – Takes initiative to identify problems and drive thoughtful, effective solutions.

Self-motivated & Organized – Manages priorities independently and follows through with clarity and accountability.

Key Responsibilities:

Architect and build low-latency systems operating at 1M+ QPS.

Design and deliver systems that let partners connect and run real-time workloads securely and efficiently.

Collaborate with partner engineering and product teams to plan, build, and launch integrations aligned with business and technical needs.

Own critical platform features from end-to-end, from design through rollout and adoption.

Proactively identify and resolve performance bottlenecks and scalability risks.

Set technical direction and guide implementation across the team.

Promote engineering quality through reviews, mentoring, and driving best practices in code, architecture, and platform design.

Required Qualifications:

10+ years of software development experience with deep expertise in Go or other high-performance languages (Java, C++, Rust).

Strong foundation in distributed systems, Kubernetes, and containerized service architectures.

Skilled at debugging and stabilizing production systems under high load.

Deep understanding of concurrency, networked systems, and service orchestration.

Hands-on experience designing and operating production workloads on a major cloud platform (GCP preferred).

Demonstrated success delivering large-scale, high-performance, and reliable systems.

Experience integrating services with gRPC, Thrift, REST, and MCP.

Strong problem-solving skills, with the ability to anticipate and address scalability, reliability, and privacy challenges.

Excellent collaboration and communication skills across engineering, product, and partner teams.

Proven experience mentoring senior engineers and raising technical standards.

Preferred Qualifications:

Experience in digital advertising, RTB, or other high-volume transactional systems.

Familiarity with OpenRTB and/or Prebid.

Strong understanding of CI/CD workflows, infrastructure as code (IaC) patterns, and observability practices, with working familiarity of tools like Terraform, Helm, and Grafana.

Expertise in designing and scaling RESTful APIs, including data modeling, error handling, performance tuning, and security best practices.

Experience using AI-assisted development tools to enhance productivity.

Staff Software Engineer - OpenX

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