Key Skills

Job Description

Role: Blockchain Integrator Type: Contract Mode: Hybrid working (2 days office per week) Location: Amsterdam, Netherlands NOTE: No Visa Sponsorship Job Description A. Technical project manager experience B. Background in software engineering. C. Engineering leadership D. Payments domain expertise (must have) OR Blockchain and digital assets (must have). E. Able to drive new initiatives with customers end to end. Engineering leadership • 10+ years in software engineering, including 3+ years managing engineering teams with experience managing tech leads. • A track record of delivering and running mission-critical, high-volume, low-latency systems in production. • Strong stakeholder management with product, risk, compliance and senior executives. Able to explain technical risk to non-technical decision-makers. B. Payments domain expertise (must have) • Deep understanding of payment lifecycles: initiation, authorization, clearing, settlement, reconciliation, returns and exceptions. • Hands-on experience with at least some of the following: SEPA (SCT, SCT Inst), SWIFT (MT and MX/ISO 20022) or similar. • Working knowledge of ISO 20022 message structures (pacs.008, pacs.002, camt.053/054) and how to map on-chain events to them. • Understanding of correspondent banking, nostro/vostro accounts, liquidity management, FX and cross-border settlement risk • Experience with real-time, double-entry ledger design, including idempotency, exactly-once semantics, event sourcing and immutable audit trails. C. Blockchain and digital assets (must have) • Solid understanding of distributed ledger fundamentals: consensus mechanisms, finality. • Production experience with at least one major smart contract ecosystem: • Familiarity with smart contract development and testing tools, invariant testing, and formal verification concepts. • Understanding of stablecoin mechanics • Understanding of cross-chain interoperability • Familiarity with DORA, PCI DSS, SOC 2 Type II, ISO 27001, and model and outsourcing risk requirements in regulated banks. • An understanding of how GDPR regulations that come into play D. Core technology stack • Languages: Strong in at least one of Java/Kotlin, Go or Rust for backend services. TypeScript for APIs and tooling. Solidity and/or Rust (for Solana) for on-chain components. • Architecture: Event-driven microservices, CQRS/event sourcing, saga and outbox patterns for distributed transactions, and API-first design (REST/OpenAPI, gRPC, webhooks). • Data: PostgreSQL (or another strongly consistent RDBMS), Kafka or a comparable streaming platform, Redis, and on-chain indexing (The Graph, custom indexers). • Cloud and platform: AWS, Azure or GCP in a regulated configuration; Kubernetes; Infrastructure as Code (Terraform); GitOps CI/CD. • Observability: OpenTelemetry, Prometheus/Grafana, Datadog or Splunk. SLO-based alerting that covers both off-chain services and on-chain state. Preferred Qualifications • Previous experience at a stablecoin issuer, a tokenization platform, or a bank digital-asset unit (e.g. Circle, Kinexys, Citi Token Services, HSBC, Stripe/Bridge etc). • Experience with tokenized money market funds or tokenized collateral as part of reserve or liquidity management. • Familiarity with privacy-enhancing technologies for on-chain payments, such as zero-knowledge proofs and confidential transfer extensions. • Experience presenting to regulators or supervisory technical teams. • Contributions to open-source blockchain projects or published security research. A degree in Computer Science, Engineering, Mathematics or a related field. Relevant certifications such as AWS/Azure Professional, CISSP or a blockchain security certification are a plus

Core Responsibilities

Lead engineering teams and drive customer initiatives from end to end, delivering and operating mission-critical, high-volume, low-latency systems. Coordinate with product, risk, compliance, and senior stakeholders on payment and blockchain integrations, communicating technical risks to non-technical decision-makers.

Requirements

Requires 10+ years of software engineering experience, including at least three years managing engineering teams and tech leads, plus expertise in payments or blockchain and digital assets. Candidates should have production experience with distributed systems and smart contract ecosystems, knowledge of relevant regulatory requirements, and strong backend engineering skills.