Staff Backend Software Engineer - Performance

The role

You will own the pacer and bidder stack within the Performance team. You will propose improvements, distribute system knowledge, and ship measurable improvements to CPx, pacing accuracy, or win rate.

What you will do

• Own the pacer and bidder
• Map the bidder and pacer stack end-to-end and identify fragilities
• Propose improvements to the bidder or pacer autonomously
• Ship measurable improvements to CPx, pacing accuracy, or win rate
• Distribute critical system knowledge
• Challenge existing designs and push for cleaner solutions
• Deepen expertise in probabilistic modelling and PID control theory
• Use AI tooling as a force multiplier
• Iterate in production

Required qualifications

• Shipped backend systems in a strongly typed language C++, Rust, Go, Scala, Java, or equivalent at production scale
• Debugged distributed systems under real traffic
• Worked inside a DSP, SSP, or bidder
• Built or tuned pacing algorithms or PID controllers theory and implementation
• Solid grounding in probabilistic reasoning and statistical modelling

Nice to have

• Experience in a scale-up environment
• ML systems in production: feature pipelines, model serving
• Real-time data pipelines and low-latency architectures at scale
• Redis, Kafka, or equivalent under meaningful load

Benefits

• Relocation support to Paris for great candidates
• Variable pay
• Hybrid flexibility
• Health insurance via Alan
• Meal vouchers via Swile
• Annual offsite
• Tech Syncs

About the company

Vibe.co is an Audience First Streaming TV Advertising platform that is now a Walmart company. It provides tools for marketers to reach audiences and optimize campaigns in real time.