Senior Software Engineer (Ad Tech Focus)

Mate.

1d•Remote

About The Position

Checkmate is a multichannel offers network, and mate. is its AI growth teammate that uses customer intelligence to help brands capture revenue. The Senior Software Engineer will design, build, and ship the core systems behind mate, including pixels, tracking, and ad delivery services used by brands. This is a senior role with responsibility for architecture decisions on a small, fast-moving team. The engineer will build backend services and APIs, maintain an identity graph, develop ad-tech infrastructure and integrations, and create real-time services for delivering offers. The role also owns production reliability, improves developer tooling and CI/CD, and provides technical leadership through design reviews, code reviews, and mentoring. This is a US-based, remote-first role. The company cannot offer visa sponsorship for this position.

Requirements

At least 6 years of experience building and shipping production software, including meaningful experience at an ad-tech company such as a DSP, ad platform, ad exchange, or identity provider.
Strong backend engineering skills in Python and TypeScript, including API and distributed-services design.
Hands-on experience building pixels, tags, SDKs, or conversion tracking on both the client side and server side.
Experience building systems that handle high request volumes with low latency.
Comfort with cloud infrastructure, containers, and CI/CD.
A track record of owning production systems from launch through monitoring and on-call.
Knowledge of ad tech and how its components connect from pixel through conversion.

Nice To Haves

Experience with identity resolution or graph networks.
Ecommerce or Shopify experience.
Early-stage startup experience.

Responsibilities

Design, build, and ship backend services and APIs that power mate's agents, from specification through production.
Improve and maintain an identity graph.
Own features end to end in partnership with product and design.
Write clean, well-tested, production-grade code and set engineering standards.
Build and maintain pixels, tags, server-side tracking, and conversion integrations with Meta, TikTok, Google, and other platforms.
Build integrations with DSPs, ad platforms, and partner APIs.
Build real-time services that deliver offers across the network quickly and reliably.
Make architecture decisions concerning service design, storage, queues, caching, and scaling.
Own production reliability, including monitoring, alerting, debugging, and incident response.
Improve developer tooling and CI/CD, and address technical debt that slows development.
Lead design and code reviews and mentor other engineers.
Help shape engineering practices and hiring as the team grows.