Fullstack Software Engineer (Web3)

TL;DR

Fullstack Software Engineer (Web3): Building and maintaining secure customer-facing experiences and platform services for enterprise crypto compliance tools with an accent on authentication, governance, and user management. Focus on developing scalable API services and robust frontend interfaces to strengthen the company’s enterprise platform.

Location: London, United Kingdom (Hybrid)

Company

A crypto compliance firm that helps financial institutions and investigators trace and disrupt illicit financial activity across blockchains.

What you will do

• Build and maintain full-stack features across web UI and APIs from design to production.
• Develop secure customer-facing capabilities like login/signup flows, governance, and user management.
• Evolve backend services and APIs for shared platform components including authz/authn and API gateways.
• Collaborate with product and design teams to turn enterprise requirements into user-friendly experiences.
• Participate in technical design reviews, planning, and code reviews to ensure system quality.

Requirements

• 3–6 years of software experience building production services.
• Proficiency in TypeScript/Node.js and modern frontend frameworks like React.
• Strong understanding of web engineering, HTTP, APIs, and authentication/authorization concepts.
• Experience working with cloud infrastructure in production environments (AWS or similar).
• Database proficiency with SQL databases like Postgres.
• Must be able to work from the London office in a hybrid capacity.

Nice to have

• Experience with Node.js frameworks like NestJS or Express.
• Familiarity with enterprise auth standards such as SAML, SCIM, and OIDC.
• Hands-on experience with Terraform, Kubernetes, or observability platforms.
• Exposure to API gateways and multi-tenant SaaS patterns.

Culture & Benefits

• Hybrid working model with an option to work from almost anywhere for up to 90 days per year.
• £500 remote working home office setup budget.
• $1,000 annual learning and development budget.
• 25 days of annual leave plus bank holidays and an extra birthday day off.
• Private health insurance, mental health support, and life assurance.
• 16 weeks of fully-paid parental leave for all eligible employees.