Join a leading Web3 scaleup shaping the future of staking and decentralised finance (DeFi). As part of a fast-growing, product-led company operating at the heart of blockchain infrastructure, you’ll have the opportunity to build, secure, and scale mission-critical services powering thousands of validators across multiple protocols.
As a Senior Site Reliability Engineer – Blockchain Protocols, you’ll join our 10-person Infrastructure team to architect, deploy and maintain our multi-cloud environments, help roll out support for new blockchain protocols, and ensure a high level of reliability, scalability, and security across the platform.
Reporting to the Head of Infrastructure, you’ll work closely with our Software, Smart Contract, and Product teams, providing internal tools and services, improving our Infrastructure-as-Code stack, and helping scale the next generation of validator products.
VOS COMPÉTENCES- Lead the deployment of new blockchain protocols in close collaboration with Product.
- Design and operate our multi-cloud infrastructure (AWS, GCP, bare metal).
- Ensure service reliability, seamless inter-service communication, and rapid recovery from incidents.
- Implement and enforce security best practices (SOC 2 certified environment).
- Support software and smart contract teams in delivering production-ready code.
- Identify and mitigate protocol deployment risks.
- Contribute to continuous architectural and process improvements.
- Liaise with Sales and Product to communicate technical risks effectively.
Tech Stack
- Infrastructure: AWS, GCP, Kubernetes, Terraform/Terragrunt, Helm, HashiCorp Vault, FluxCD, Prometheus/Thanos
- Languages: Golang, TypeScript
- Databases: PostgreSQL
- Smart Contracts: Solidity, Foundry, OpenZeppelin
- 5+ years of experience in software or infrastructure engineering, preferably in high-standard environments (FinTech, Crypto, or similar).
- Proven background as a Senior SRE, with deep expertise in Kubernetes.
- Proficiency with Infrastructure-as-Code (Terraform, Terragrunt) and GitOps tooling (Helm, FluxCD).
- Strong grasp of observability tooling (Prometheus/PromQL).
- Solid understanding of infrastructure and data security (Vault, KMS).
- Comfortable with opinionated technical decisions and best practices sharing.
- Fluent in English – all internal and external communications are in English.
Nice to have:
- Prior experience in a Web3, blockchain, or crypto startup.
- Hands-on experience running blockchain nodes (professionally or personally).
- Experience designing and scaling API-first platforms.
- Previous exposure to certified environments (SOC 2, ISO 27001, PCI DSS, etc.).
Who you are: You are pragmatic, quality-driven, and passionate about building robust infrastructure. You’re energised by complex systems and thrive in fast-paced environments where innovation, autonomy, and collaboration go hand-in-hand. You’re excited to work in the Web3 space, even if you’re still deepening your blockchain knowledge.
AVANTAGES- Competitive salary
- Equity options – we grow, you grow
- Flexible working – remote-first culture across the UK & EU
- Unlimited holidays
- Generous learning & conference budget
- Low-bureaucracy, high-trust work environment
- Intro Call – Recruiter (45 min)
- Take-home Exercise – < 2 hours
- Technical Interview – (90 min)
- Values & Team Fit Interview – (45 min)
- Final Chat with Founders – (30 min)
- Offer! 🎉
We aim to complete the process within 3 weeks. Let us know if you need any adjustments.
A Web3 scaleup powering institutional-grade staking and DeFi infrastructure. API-first platform enables seamless staking operations for major financial players, supporting billions in assets across 45,000+ validators with zero slashing events.
90-strong team is composed of passionate professionals from Google, Circle, Ledger, Chainalysis, and other top tech firms. Backed by $30M in funding from tier-1 investors (including Crypto.com, ConsenSys, Wintermute, and more), we are recognised by the French Government’s #FT120 scaleup programme and are growing fast.