Senior Backend Engineer — Fintech, Scale Core Platform; Seattle
Listed on 2026-10-11
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Software Development
Backend Developer, Software Engineer, Database Engineering, Senior Developer
Jack is recruiting a Senior Backend Engineer for a Seattle-based fintech startup rebuilding its cash-advance platform. You will own the core backend, ledger, transaction processing, payment integrations, and data pipelines designed for 5–10x growth.
You’ll join a hands-on, startup environment where you move fast, ship features that move real numbers, and rely on SQL, Go, and cloud services to impact underwriting and operations daily.
Join us at Jack as our next Senior Backend Engineer — Fintech, Scale Core Platform (Seattle) in Seattle, WA, United States.
If your experience matches this role, we encourage you to apply.
All applications are reviewed carefully by our team.
The position is based in Seattle, WA, United States.
This opportunity is part of our work in IT & Technology.
The advertised compensation is 120..
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