[Your Name] · [Email] · [Phone] · [City, ST]
April 21, 2026
Dear Hiring Manager,
I'm applying for the Senior Software Engineer role on the Marketplace Pricing team. Your team's talk at QCon on the move from a single-variable surge multiplier to a multi-objective pricing optimizer — and the honesty about which rider segments were made worse in the first rollout — is the kind of problem I've spent the last three years on at DoorDash, specifically balancing courier earnings against delivery ETA in high-density downtowns.
At DoorDash I owned the dynamic delivery fee service handling 2.8M requests per hour across 4,200 cities. The original fee model optimized for a single objective (marketplace conversion) and was silently transferring earnings away from couriers in the top 10% of dense urban zones. I identified the pattern in a weekly data-quality review that wasn't mine to own, proposed a multi-objective reformulation to my staff engineer, and drove the rewrite over two quarters — Go on the hot path, Kafka for event ingestion, a per-market control model that updates every 30 seconds. The launch increased courier retention in affected zones by 9.1%, held rider conversion within 1.2% of baseline, and reduced our incident rate on the fee service from 4 sev-2s per month to zero over the next 6 months. I carried the pager for it for 11 months and wrote the runbook myself.
Before DoorDash I was engineer #31 at a logistics startup (Convoy, freight) where I shipped the first version of the load-matching service and was on-call for it alone. That range — from 'I am the only person who understands this system' to 'I am one engineer on a 14-person marketplace team at global scale' — is the muscle I'd bring to Marketplace Pricing. What drew me to Uber specifically is that it's one of the few places where a pricing model is not an abstraction — it affects a driver's take-home pay on a Thursday night, and the team takes that seriously.
I'd love to talk about the team's current priorities on multi-modal pricing (rides vs. Eats vs. Freight) and where the biggest open problems are on the supply side. I can share a design doc from the DoorDash rewrite (6 pages, internal-scrubbed) and I'm happy to do the coding rounds in Go or Java.
Sincerely,
[Your Name]