Summary: The Senior Golang Engineer (Crypto) role involves working with a fast-growing technology company focused on crypto, where the engineer will design and maintain high-performance backend services using Golang and Ruby. This fully remote position requires expertise in crypto systems and a strong understanding of distributed systems. The engineer will collaborate with various teams to deliver scalable solutions and participate in architectural discussions. The role is contract-based for 12 months and classified as outside IR35.
Key Responsibilities:
- Design, build, and maintain high-performance backend services using Golang and Ruby
- Work on crypto/blockchain-related systems, such as wallets, trading platforms, payments, or on-chain integrations
- Build and maintain APIs and microservices with a focus on scalability, reliability, and security
- Collaborate with product managers, frontend engineers, and DevOps in a fully remote environment
- Write clean, well-tested, and maintainable code
- Participate in architectural discussions and technical decision-making
- Debug, optimise, and improve existing systems in production
Key Skills:
- Strong commercial experience with Golang and Ruby
- Proven experience working in crypto, blockchain, or digital assets
- Solid understanding of distributed systems, concurrency, and performance optimisation
- Experience building and consuming RESTful APIs (GraphQL a plus)
- Strong knowledge of databases (PostgreSQL, MySQL, or similar)
- Familiarity with cloud platforms (AWS, GCP, or Azure)
- Experience working in remote, agile engineering teams
- Excellent problem-solving and communication skills
- Experience with smart contracts or blockchain protocols (e.g. Ethereum, Bitcoin, Solana)
- Knowledge of trading systems, exchanges, or DeFi platforms
- Experience with Docker, Kubernetes, or infrastructure-as-code
- Security-focused development experience
- Startup or scale-up background in high-growth environments
Salary (Rate): £110.00/hr
City: undetermined
Country: United Kingdom
Working Arrangements: remote
IR35 Status: outside IR35
Seniority Level: undetermined
Industry: IT
Senior Golang Engineer (Crypto) Contract – Outside IR35
Location - Fully Remote (UK-based candidates only)
Rate - £700–£850 per day (Outside IR35)
Duration - 12 months
Overview
We are working with a fast-growing, crypto-focused technology company building high-performance, secure systems across blockchain, trading, and digital asset infrastructure. They are looking for an experienced Golang / Ruby Engineer to join a distributed engineering team and help deliver scalable, production-grade solutions in the crypto space. This role suits an engineer who is comfortable working in high-throughput environments, understands the nuances of crypto systems, and enjoys taking ownership in a remote-first setup.
Key Responsibilities
- Design, build, and maintain high-performance backend services using Golang and Ruby
- Work on crypto/blockchain-related systems , such as wallets, trading platforms, payments, or on-chain integrations
- Build and maintain APIs and microservices with a focus on scalability, reliability, and security
- Collaborate with product managers, frontend engineers, and DevOps in a fully remote environment
- Write clean, well-tested, and maintainable code
- Participate in architectural discussions and technical decision-making
- Debug, optimise, and improve existing systems in production
Required Skills & Experience
- Strong commercial experience with Golang and Ruby
- Proven experience working in crypto, blockchain, or digital assets
- Solid understanding of distributed systems , concurrency, and performance optimisation
- Experience building and consuming RESTful APIs (GraphQL a plus)
- Strong knowledge of databases (PostgreSQL, MySQL, or similar)
- Familiarity with cloud platforms (AWS, GCP, or Azure)
- Experience working in remote, agile engineering teams
- Excellent problem-solving and communication skills
Nice to Have
- Experience with smart contracts or blockchain protocols (e.g. Ethereum, Bitcoin, Solana)
- Knowledge of trading systems , exchanges, or DeFi platforms
- Experience with Docker, Kubernetes , or infrastructure-as-code
- Security-focused development experience
- Startup or scale-up background in high-growth environments
