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Senior Backend / Product Engineer — Fintech (Lending & Ledger)

Pesto · PL / Remote (PL) · Remote

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About Pesto

Pesto launched the first asset-backed credit card. Now, we empower brands to launch their own revolving, secured credit cards, all with the infrastructure we use ourselves. Backed by Y Combinator.

About the role

We're a small team building a live consumer credit product — a dynamic credit card: application funnel, KYC/credit decisioning, a double-entry ledger, statements, payments, and ACH. You'll own backend systems where correctness with money is the whole job. You'll help shape the product itself as well. You need strong product judgement.

What they're looking for

  • Strong backend fundamentals: data modeling, Postgres, async/queue-driven systems, idempotency, and designing for failure
  • Comfort owning a feature across the stack: DB → API → infra → tests → deploy → monitoring
  • The ability to operate with incomplete requirements and drive a problem to a concrete outcome
More about this role

We're a small team building a live consumer credit product — a dynamic credit card: application funnel, KYC/credit decisioning, a double-entry ledger, statements, payments, and ACH. You'll own backend systems where correctness with money is the whole job. You'll help shape the product itself as well. You need strong product judgement.

  • Services that move money and reconcile against a ledger that is the system of record
  • Integrations with credit-decisioning, card-issuing, ACH, and KYC/AML providers
  • Cross-service contracts (async, queue-based) where a malformed message is a production incident
  • GraphQL APIs powering a mobile app, plus the batch/job pipelines behind statements and payments
  • Product design and implementation across the member experience, from application flow through servicing and repayment
  • Strong backend fundamentals: data modeling, Postgres, async/queue-driven systems, idempotency, and designing for failure
  • Comfort owning a feature across the stack: DB → API → infra → tests → deploy → monitoring
  • The ability to operate with incomplete requirements and drive a problem to a concrete outcome
  • Financial/fintech experience — ledgers, double-entry accounting,...

Read the full posting on Pesto's site ↗

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