Own the routing engine, billing infrastructure and webhook delivery. Python/FastAPI/MongoDB. We process every inbound lead through code you write — sub-100ms p99 latency, idempotent everything, audit-trail everything.
Who you are
- 6+ years building production Python services — async/await fluent
- Deep MongoDB experience including indexing, aggregation, transactions
- Have built billing or payments infra you're proud of
- Care about correctness — money flows through this code
What you'll own
- Own ping-tree v2 (multi-buyer parallel routing)
- Lead the CRM connector platform (HubSpot/Salesforce/Pipedrive)
- Set the engineering bar for the next 5 hires
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We invite applications for the Senior Backend Engineer position located in Greater London, England, United Kingdom.
If your experience matches this role, we encourage you to apply.
All applications are reviewed carefully by our team.
The position is based in Greater London, England, United Kingdom.