London, United Kingdom | Posted on 23/04/2026
Overview
The employer is a cryptocurrency launchpad for the Solana blockchain that enables users to create tokens and trade them on the platform, and to launch them onto decentralized exchanges. With over 6 million meme coins launched on the platform, it is one of the fastest-growing crypto applications and one of the biggest drivers of the explosive growth in memecoins on the planet.
Responsibilities
- Payment Orchestration & Integrations: Own the end-to-end payment orchestration for major bank rails (ACH/RTP/FedNow/SEPA/Open Banking) and cards (including Apple Pay/Google Pay). Design and implement idempotent, fault-tolerant APIs and robust webhook processing systems. Integrate and manage third-party providers for connectivity (Plaid/TrueLayer/Tink), card processing (Stripe/Checkout.com/Adyen), and on-chain risk/compliance (Chainalysis/TRM, Travel Rule networks). Build and scale a real-time risk engine (≤ 300 ms) combining ML scores, rules, device signals, sanctions/KYC hits, payment intelligence, and blockchain analytics to yield fast GREEN/AMBER/RED outcomes. Implement foundational KYC/AML primitives (CIP/CDD, sanctions/PEP screening, Travel Rule data plumbing) in close partnership with our Compliance team, ensuring audit-ready decision journaling.
- Financial Integrity & Reconciliation: Ship a double-entry ledger and automated reconciliation jobs that accurately tie together processors, bank statements, and on-chain balances. Develop daily break detection and automated remediation workflows to maintain financial integrity.
- Blockchain & Wallet Operations: Ensure safe and rapid crypto delivery (e.g., USDC/SOL) to user wallets by managing hot-wallet flows, transaction creation, confirmations, and operational safeguards.
- Reliability & Instrumentation: Set the bar for reliability: implement SLOs, circuit breakers, retries/backoffs, dead-letter queues, shadow traffic, and canary releases for all high-risk financial flows. Instrument everything with traces, metrics, and logs. Build internal ops & compliance dashboards and participate in the production on-call rotation for our 24/7 system.
- Cross-Functional Collaboration: Work closely with Product, Mobile, Compliance, Risk, and Finance teams, driving features from initial concept through production deployment and iteration.
- Stack: Languages: Rust, Go, TypeScript/Node, Python. Messaging: Kafka/Redpanda, NATS. API/IPC: gRPC/REST. Infra: AWS (EKS, RDS, KMS), Terraform.
Requirements
You are a backend and onramp specialist with a passion for high-throughput, low-latency distributed systems and financial technology.
Essential Qualifications :
- System Design & Scale: Deep experience in high-throughput, low-latency distributed systems, payments, or fintech risk platforms.
- Language Fluency: Fluent in one or more systems languages (Rust, Go), or strong systems chops in TypeScript/Node/Python.
- Database Mastery: Expert-level knowledge of Postgres (transactions, indexing, locking), with familiarity in Redis and event/OLAP stores (Kafka/Redpanda, ClickHouse).
- API Craftsmanship: Mastery of gRPC/REST best practices, including versioning, pagination, authN/Z, idempotency keys, and building rock-solid webhook consumers.
- Event-Driven Design: Experience designing systems with queues, outbox/inbox patterns, Sagas, and ensuring exactly-once-effective behavior.
- Security Mindset: Practical experience with key management basics, HSM/KMS usage, secrets hygiene, least privilege, data minimization, and auditability.
- Ownership & Ambiguity: Ownership-driven and comfortable operating in high-ambiguity environments—you move quickly, measure results, and iterate.
Nice to Have (Signal Boosters) :
- Open banking: Plaid/TrueLayer/Tink; account auth and bank-transfer initiation.
- Compliance plumbing: sanctions/PEP screening, Travel Rule networks, SAR/STR workflow integration.
- Crypto delivery: Solana RPCs, USDC flows, wallet ops, Chainalysis/TRM integrations.
- Accounting: double-entry ledgers, reconciliation jobs, and data modeling for regulatory/tax reporting (e.g., 1099‑DA/DAC8).
Contract: Permanent role (on-site/in-person) in London (UK).
Work essentials: MacBook Pro, iPhone, AirPods, screens, headsets, cables provided on Day 1. Training and coursework in Crypto, Blockchain, Security, code, Coding languages and other topics are paid for on-demand. Fully funded attendance at fintech, blockchain, or related conferences. Teams retreats/meetups/seminars/conferences all around the world. Benefits include healthcare and life insurance, retirement plan, sponsored transportation, gym, lunch card, home office equipment, and other perks.
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