About Pepr AI

We are building the AI Operator for growth to replace the traditional ad agency with autonomous code. We apply the quant rigor of high-frequency trading to optimize ad spend, delivering a massive 20-50% upside in efficiency for our partners.

We are already managing critical spend for global category leaders like Cider and Cupshe with a clear path to managing billions of dollars in autonomous volume. We are backed by Quiet Capital and are looking for early engineers to join us in San Francisco.

The Role

We are looking for a high-agency Software Engineer with a backend focus to own core product features end-to-end.

You are not here to pick up tickets from a backlog. You are here to solve ambiguous engineering problems that directly impact the P&L of our clients. You might spend one week building a real-time anomaly detection system to catch spending spikes and the next week architecting a parameter tuning engine that helps our models learn faster.

We are looking for first-principles thinkers who are obsessed with building high-quality software and are curious about how complex systems behave.

What You'll Do

• Own Features End-to-End: You will take abstract requirements and turn them into shipping code. Whether it is building a Creative Fatigue detector or a Root Cause Analysis engine, you will design the data model, write the backend logic and ship the API.

• Work Across the Stack: While your focus is backend, you are not afraid to touch the database, configure infrastructure or tweak a frontend component if that is what it takes to ship value.

• Scale Our Intelligence: You will work closely with our ML engineers to productionize their mathematical insights. You will turn experimental scripts into robust, scalable systems that run reliably 24/7.

Who You Are

• A Builder: You have 2-5 years of experience building software in a team environment. You have shipped code to production and supported it.

• Intensely Curious: You want to know how things work under the hood. You don't just use a library; you read the documentation to understand its trade-offs. You have a history of tinkering with side projects or exploring new technologies just for fun.

• Independent Thinker: You don't wait for permission or perfect specs. When you see a problem, you propose a solution and build a prototype.

• Language Agnostic: You are proficient in at least one modern backend language (Python, Go, Java, etc.) but are happy to learn whatever tool is best for the job.

Bonus Points

• Math/Stats Interest: You don't need to be a quant, but you aren't afraid of math. You are curious about how probability and statistics influence system design.

• AI-Native Workflow: You use tools like Cursor or Claude Code to accelerate your development speed.

Compensation & Benefits

• Salary: $130,000 – $180,000

• Equity: Significant equity package

• Food: Daily lunch and (optional) dinner

• Relocation: Relocation support for candidates moving to the Bay Area

• Benefits: Comprehensive health, dental, vision and unlimited PTO