Tech Lead, Fintech (Node.js / Go)

Location : Remote within EU / UK

About Block Labs

Block Labs is a leading force in the Web3 space, incubating, investing in, and accelerating top-tier fintech, crypto and iGaming projects. With a mission to shape the future of decentralized technology, we partner with visionary startups to raise funding, refine product-market fit, and grow their audiences. Our diverse team drives innovation, using deep industry expertise and an extensive network to empower the next wave of blockchain-driven companies. At Block Labs, we’re passionate about turning bold ideas into breakthrough success.

About The Role

You will join a dedicated squad building Web3-native products that abstract away blockchain complexity to deliver smooth, intuitive user experiences. In line with our mission to bridge the Web2 to Web3 gap, we are developing a highly configurable, modular platform that powers secure SSO onboarding , dynamic routing, and real-time interactions with decentralized systems. As Tech Lead, you will architect, build, and lead a small but high-impact team, owning backend services and infrastructure using Node.js (NestJS) and Go, and collaborating closely with product, frontend, and other stakeholders to deliver scalable, resilient features that will serve as the foundation for a broader suite of tools designed to make Web3 more accessible to all.

Key Responsibilities

• Lead the technical design and implementation of backend and service infrastructure using NestJS and Go.
• Build clean, modular, and testable systems that support scalable configuration, dynamic routing, and feature flagging.
• Design and implement integrations with a wide range of third-party APIs and services.
• Integrate secure SSO solutions into authentication flows.
• Develop APIs that support high-throughput, low-latency user interactions.
• Own communication contracts and runtime coordination between services written in Node.js and Go.
• Define and enforce architectural standards, testing practices, and code quality guidelines across the stack.
• Set up observability pipelines including logs, metrics, monitoring, and dashboards.
• Collaborate cross-functionally with product, design, platform and frontend engineers.
• Actively mentor engineers and contribute to a culture of engineering excellence.

About You

• 6+ years of experience in Backend or Fullstack engineering with leadership exposure.
• Web3 and / or fintech domain knowledge.
• Deep expertise in TypeScript, Node.js, and NestJS, including REST API design and delivery.
• Strong hands-on experience working with Go, especially for performance-sensitive services.
• Proven experience integrating and maintaining multiple third-party APIs in a production environment.
• Solid understanding of event-driven architectures and messaging systems like NATS or Kafka.
• Experience working with microservices and distributed systems in production.
• Strong testing practices (unit, integration, E2E) and clean CI / CD workflows.
• Excellent communication skills and ability to thrive in a remote, async-first environment.
• Familiarity with React, Tailwind, or experience collaborating closely with frontend teams is a plus.
• Bachelor’s degreein Information Technology, Computer Science, or a related field is an advantage.