Senior Software Engineer, Technical Leadership / Platform

About the Company We are the all-in-one crypto and stablecoin platform built exclusively for payments companies. Clients onboard with a single partner and unlock stablecoin settlement, payins, payouts, and treasury optimisation across global corridors, all through a single API. The platform is built on top of leading providers at every layer of the stablecoin stack (custody, KYX, screening) with proprietary orchestration technology on top, and is the only platform offering product and licence redundancy in all major markets, with dozens of partners and over 100 global licences. Founded by payments executives and crypto veterans, we announced a $20M Series A in 2026. We are remote-first with offices in Miami and Vienna, and run a first-principles, founder-mindset culture: compliance-first, AI-driven, client-obsessed. About the Role A hands-on senior engineer with a Technical Leadership / Platform specialisation who owns the technical foundation of the platform: roughly 30-50% architecture, the rest hands-on on the most complex, highest-risk backend work. This person defines the platform architecture, so crypto-specific failure modes (finality and reorgs, vendor sandbox-vs-production gaps, stablecoin settlement mechanics, compliance flows in the money path) must be known upfront, not learned on the job. IC-track with no people management, technical influence only. Reports to the Engineering Manager. Key Responsibilities - Design and evolve core platform services: reliability, data integrity, clear service boundaries; identify architectural risks and scalability limits before they hit production - Implement the most complex, high-risk backend components in TypeScript/Node.js, owning correctness under partial-failure scenarios - Design reliability mechanisms: retries and backoff, timeouts, idempotency, partial-failure handling, degraded and fallback modes - Act as the primary technical contact for partners and clients on API/SDK integrations: solution reviews, troubleshooting, roadmap alignment, documentation - Drive observability improvements (metrics, logs, tracing) and participate in production incident analysis - Raise the team's technical maturity through code reviews, decomposition of ambiguous problems, pairing, and documentation Requirements - 6+ years of professional backend engineering with strong TypeScript and Node.js - Deep hands-on crypto infrastructure experience: designed and ran production systems that move real funds (custody, wallets, exchange, payments, or settlement). Hard filter. - Built the orchestration layer of a crypto payments platform on top of third-party vendors (custody, KYX, screening APIs): transaction-flow orchestration, settlement, ledger and reconciliation, compliance requirements in the money path - Deep distributed-systems design experience: microservices, service boundaries and data models, API contracts, queues and async communication - End-to-end production ownership: on-call, incident response, debugging API failures and data issues - Excellent PostgreSQL/SQL - Proficient daily use of AI coding tools (e.g. Claude Code, Copilot) with fast, critical review of AI output - Strong written and verbal English: able to defend technical decisions with partners' engineers Bonus Skills - Regulated financial environments (licensing, audits, compliance-driven engineering) - Event-driven systems (Kafka, RabbitMQ, SQS); Redis; Docker, Kubernetes, AWS - Architecture leadership across timezones in a distributed team