Job for Experts
Lead Blockchain Payments Engineer - Fiat Ramps
About the Role
You will design, build, and operate core payment and fiat onramp infrastructure. You will own end-to-end payment orchestration, implement idempotent APIs and robust webhook consumers, and integrate third-party providers. You will build a low-latency real-time risk engine and implement KYC/AML primitives with audit-ready journaling. You will ship a double-entry ledger, automated reconciliation workflows, and daily break detection with remediation. You will manage hot-wallet flows and crypto delivery, instrument systems with traces metrics and logs, and participate in the 24/7 production on-call rotation. You will collaborate closely with Product Mobile Compliance Risk and Finance to drive features from concept to production.
Requirements
- Proven experience building fiat onramps end-to-end
- Deep experience with high-throughput low-latency distributed systems or payments platforms
- Fluency in systems languages such as Rust or Go or strong systems experience with TypeScript Node or Python
- Expert-level knowledge of Postgres including transactions indexing and locking
- Familiarity with Redis and event/OLAP stores such as Kafka Redpanda and ClickHouse
- Mastery of gRPC and REST best practices including versioning authN Z and idempotency
- Experience with event-driven design patterns including queues outbox inbox and Sagas
- Practical security and key management experience including HSM KMS and secrets hygiene
- Experience implementing KYC AML sanctions and Travel Rule plumbing
- Ownership-driven and comfortable working in high-ambiguity environments
Responsibilities
- Own end-to-end payment orchestration for bank rails and card networks
- Design and implement idempotent fault-tolerant APIs and webhook processing
- Integrate and manage third-party connectivity and payment providers
- Build and scale a low-latency real-time risk engine
- Implement KYC AML primitives and audit-ready decision journaling
- Ship a double-entry ledger and automated reconciliation jobs
- Develop daily break detection and automated remediation workflows
- Manage hot-wallet flows, transaction creation, and crypto delivery
- Implement reliability patterns SLOs retries backoffs dead-letter queues and canary releases
- Instrument systems with traces metrics and logs and build ops dashboards
- Participate in the production on-call rotation
- Drive features from concept through production in cross-functional collaboration
Benefits
- Tokens/Equity
Skills
NodeTravel RuleApple PayGoogle PayTrmStripeAdyenUsdcRedpandaPayment ProcessorRisk EngineHot WalletSolanaOpentelemetryGoPostgresOpen BankingHsmGrpcWebhookAchTypescriptTerraformMachine LearningRustObservabilityAwsRestClickhouseGrafanaPrometheusFiat OnrampRtpFednowCard ProcessingIdempotencyReal-Time RiskDouble-Entry LedgerWallet OperationsPlaidTruelayerTinkCheckout.ComNotabeneTrisa
