Founding Engineer - Backend (Fintech)

Role Overview

Wnted is building a new way for consumers to afford the things they want without taking on debt. We are building the financial infrastructure behind recurring deposits, bank connections, goal-based balances, payments, and redemptions. We are hiring a Founding Backend Engineer to help build and own our core financial infrastructure, working on systems responsible for moving, tracking, securing, and reconciling real money.

Responsibilities

• Build and maintain backend services in Go
• Design reliable money-movement and transaction workflows
• Integrate with banking, ACH, open-banking, ledger, KYC, and redemption providers
• Build recurring deposit and user mandate systems
• Implement transaction state machines and secure webhook processing
• Implement idempotent APIs, background workers, retries, and failure-recovery workflows
• Build reconciliation between payment providers, the ledger, and bank accounts
• Participate in architecture decisions, code reviews, testing, deployment, and production incident resolution

Requirements

• 3–5 years of professional backend engineering experience
• Prior professional experience working at a U.S.-based fintech company
• Strong experience with Go, or significant backend experience in Java, or another strongly typed language
• Strong understanding of PostgreSQL, including database transactions, indexing, locking, and data modeling
• Experience building APIs, webhooks, background workers, and asynchronous systems
• Experience with Redis or similar caching and distributed-locking systems
• Experience using Docker and deploying services to AWS, GCP, or Azure
• Experience with automated testing, CI/CD, structured logging, monitoring, and alerting
• Hands-on experience building or maintaining fintech-grade security and controls

Skills

• Go
• PostgreSQL
• Redis
• Docker
• AWS