Principal Architect

Our requirements

• Led the architecture of large-scale, distributed, data-intensive platforms running in production for enterprise customers.
• Successfully migrated live systems between architectures without disrupting business operations, with a strong understanding of the technical and organizational trade-offs involved.
• Extensive hands-on experience with C#/.NET, MSSQL, and PostgreSQL across both on-premises and cloud environments.
• Able to review complex codebases, identify architectural weaknesses, and recommend practical improvements.
• Experienced in writing RFCs, architecture decision records (ADRs), and other technical documentation that drives clear engineering decisions.
• Strong communicator, trusted by both engineering teams and enterprise customers, including senior technical stakeholders such as bank architects.
• AI-native approach to software architecture, proactively designing systems with AI capabilities in mind rather than adding them as an afterthought. (Current tooling: Cursor & Claude Code.)

Your responsibilities

• Own the target architecture by defining the platform structure, establishing clear service boundaries, and making architectural decisions that enable engineers to build with confidence.
• Lead the technical transformation across key initiatives, including on-premises to cloud migration, MSSQL to PostgreSQL migration, and the evolution from legacy systems to a modern platform architecture.
• Stay closely involved throughout the transformation to ensure the implementation remains aligned with the architectural vision and to identify potential issues early.
• Create and maintain clear architectural documentation, including RFCs, ADRs, and technical strategy documents, ensuring that key decisions are well documented and effectively communicated.
• Drive the adoption of AI as a core architectural principle, integrating it into services, data pipelines, and the software development lifecycle (SDLC) rather than treating it as an additional feature.

About the project

What we offer

• Private healthcare, fitness, meal, and phone allowance
• Opportunity to shape and build the engineering organization you'd want to be part of
• Work on software used by over 100 million people every day, powering real banking environments
• 20 days of paid annual leave (no paid sick leave)

Recruitment stages

• 1.
  Recruiter screening - 25-30 min phone call.
• 2.
  Screening - 30 min call. The transformations you've led.
• 3.
  CTO - 60 min. How you think about architecture
• 4.
  One real architectural problem from our platform - 90 min.
• 5.
  Decision/offer within 10 days of the final interview.