IT & Software

Senior Full Stack Software Engineer

Certus Recruitment Group

London · Greater London · United Kingdom

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Overview

In this role you will help build the core technology behind a regulated digital currency platform at an early-stage fintech. You will own contributions across the stack from backend services to settlement systems, collaborating with the Head of Engineering. You will tackle architecture-to-production work, including on-chain integration and customer-facing applications, to enable scalable, compliant financial infrastructure. This is a hands-on, ownership-driven position with meaningful impact as the platform moves from sandbox to regulated production.

Responsibilities
  • Develop and maintain backend services and transaction workflows
  • Design and implement financial transaction and settlement systems
  • Implement compliance and authorisation logic
  • Shape database design and ensure transactional integrity
  • Build APIs and event-driven architectures with shared schemas
  • Develop both customer-facing and internal applications
  • Integrate blockchain/on-chain settlement
  • Convert architecture designs into robust, production-ready software
  • Collaborate closely with Head of Engineering across the stack
Key requirements
  • 5+ years of professional software engineering experience
  • Strong backend engineering capabilities
  • Experience taking systems from prototype to production
  • Strong TypeScript and PostgreSQL/SQL skills
  • Experience with strongly typed languages
  • Rust experience is highly desirable or strong systems background with quick learning
  • Experience with event-driven and transactional systems
  • Strong written communication and a design-led approach
  • Collaborative, hands-on and able to take ownership
  • Experience in fintech, payments, banking, custody or financial infrastructure is advantageous
  • Interest in developing knowledge of on-chain systems
  • collaborative
  • hands-on
  • ownership
  • TypeScript
  • PostgreSQL/SQL
  • strongly typed languages

Reference: WJ-747_31189406 · Posted 01 Nov 2026, 12:11 PM

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