Principal Architect
London • Permanent • Competitive

Principal Architect

Easy Apply
London On-site Permanent 26 Applications
Competitive
Full-time
Posted 22 Sep 2026
Expires 22 Oct 2026

Job description

You will set the long-term architecture for high-throughput transactional systems. You will design and review distributed microservices, optimize payment and ledger flows, establish engineering standards, lead AWS strategy, embed security and compliance, and mentor senior engineers.

Responsibilities

  • Define and drive the long-term technical architecture
  • Lead the design and review of distributed systems and microservices
  • Architect payment processing, ledger management, and financial data consistency systems
  • Define architecture principles, coding standards, and deployment patterns
  • Lead AWS strategy and optimize resource utilization, latency, and cost
  • Integrate security-by-design principles and financial compliance requirements
  • Mentor senior engineers, lead architecture reviews, and guide technical decisions

Requirements

  • 10+ years of software engineering experience
  • Experience architecting large-scale payment platforms, ledger systems, or high-volume financial infrastructure
  • Expertise in microservices architecture, event-driven design, and distributed systems
  • Experience designing and operating high-traffic AWS applications
  • Understanding of financial database patterns, transaction atomicity, consistency models, and distributed data
  • Ability to influence technical direction and manage stakeholder expectations
  • Knowledge of security in regulated industries and protecting sensitive financial data
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