Backend Engineer

About This Role

This Backend Engineer role focuses on designing and scaling complex financial technology and crypto systems for seamless fiat-to-crypto flows, real-time risk decisions, and robust financial records within a high-throughput, low-latency distributed environment.

Responsibilities

• Own the design and implementation of fault-tolerant, idempotent APIs for payment orchestration across bank rails and card networks
• Integrate and manage third-party providers (payment processors, Open Banking APIs, blockchain analytics tools) behind clean, reliable, and versioned interfaces
• Build and scale a real-time risk engine that combines rulesets, ML scores, device signals, sanctions/KYC hits, and blockchain analytics to generate rapid, accurate risk decisions
• Implement core KYC/AML primitives (CIP/CDD, sanctions/PEP screening, Travel Rule data) and ensure robust, audit-ready journaling
• Ship a precise double-entry ledger and reconciliation system to accurately tie together balances from processors, bank statements, and on-chain wallets
• Ensure the safe and fast delivery of crypto assets to user wallets by managing hot-wallet flow, transaction creation, confirmations, and operational safeguards
• Significantly raise the bar on reliability by implementing SLOs, circuit breakers, retries, DLQs, shadow traffic, and canary release strategies, and participating in the on-call rotation
• Work cross-functionally with product, mobile, compliance, risk, and finance to take features from concept to production

Requirements

• Expertise in high-throughput, low-latency distributed systems, particularly within payments, FinTech risk, or core FinTech architecture
• Fluent in Rust, Go, or TypeScript/Node/Python with strong systems engineering skills
• Deep expertise in Postgres (transactions, indexing, locking)
• Mastery of gRPC/REST best practices, API versioning, pagination, robust authN/Z, idempotency, and designing resilient webhook consumers
• Strong event-driven design thinking, including working with queues, the outbox/inbox pattern, and guaranteeing exactly-once-effective behavior
• Security-minded approach to key management, HSM/KMS, secrets hygiene, least privilege, and auditability

Qualifications

• Proven track record building end-to-end fiat-to-crypto onramp systems and expertise in high-throughput, low-latency distributed systems.

Nice to Have

• Experience with payments specifics (ACH returns, 3DS)
• Open Banking APIs (Plaid/TrueLayer)
• Risk/fraud tooling
• Travel Rule compliance
• Solana RPCs
• Double-entry ledger accounting
• Familiarity with AWS, Terraform, Kubernetes, and OpenTelemetry

Skills

* Required skills

Benefits