Software Development Engineer, Amazon Ads Geographic Targeting

Application deadline: Sep 28, 2026

Amazon Ads is building the systems that determine where billions of ad impressions land geographically every day, and we need a Software Development Engineer to lead that work. You"ll own the architecture that scores location signals in real time, turns those scores into bid-time features, and connects advertiser targeting to the physical world.

The Geo Targeting team sits at the intersection of ad tech, large-scale data infrastructure, and applied ML. Our systems process billions of bid requests daily, fusing multiple location signal sources to determine where an impression is coming from and how confident we are in that answer. The challenge is that location signals are noisy, often conflicting, and vary in reliability by country, device type, and signal source. You"ll design the systems that make sense of that noise at bid-time latency, at global scale, under evolving privacy constraints. This is a hands-on engineering role where you"ll write production code, lead design reviews, mentor engineers, and own systems that directly affect how hundreds of thousands of advertisers reach customers.

Key job responsibilities

• Build and extend location signal processing systems that ingest, score, and resolve geo data sources at bid-time latency
• Implement and maintain data pipelines that connect address and device signals to impression-level location inference
• Own component-level integration between location intelligence systems and the bid optimization stack
• Contribute to solutions for international coverage gaps, working with senior engineers to identify and address unreliable location inference methods
• Drive operational excellence within your scope of geo infrastructure ownership, including latency monitoring, accuracy measurement, and cost efficiency
• Participate in design reviews and mentor junior engineers on your team

A day in the life

Your days are anchored in code, but the problems change. One morning you"re building a pipeline that processes location signals across billions of daily requests. That afternoon you"re digging into data to figure out why accuracy drops for a specific carrier in Germany. The next day you"re in a design review with scientists and bidding engineers, working through how to turn a noisy signal into something the bidder can act on in microseconds. You own what you build, from design through production operations. You also mentor engineers on your team and interview candidates. The problems are hard, the scale is massive, and the impact is direct.

About the team

We build the location intelligence that powers geographic targeting across Amazon"s demand-side platform. Our customers are advertisers who need to reach people in specific places, from a single neighborhood to an entire country. The team is small and technical. Engineers work directly with scientists, product managers, and partner engineering teams across bidding, targeting, and measurement. You will have real ownership and direct influence on what we build and how we build it. We value clarity in thinking, simplicity in design, and rigor in operations. We are growing, and the people we hire now will define the team"s technical culture.