Principal Architect

Building financial intelligence for over 100 million users across leading banks worldwide. The role involves owning the entire platform architecture, including services, data, integrations, and deployment models. Reporting directly to the CTO, the Principal Architect defines target architecture and drives transformations focused on performance, architecture, and AI.

• Led architecture of large-scale, distributed, data-intensive platforms in production for enterprise customers.
• Successfully migrated live systems between architectures without disrupting business operations.
• Extensive hands-on experience with C#, .NET, MSSQL, and PostgreSQL in on-premises and cloud environments.
• Ability to review complex codebases, identify architectural weaknesses, and recommend improvements.
• Experienced in writing RFCs, architecture decision records (ADRs), and other technical documentation.
• Strong communication skills with senior technical stakeholders, including enterprise customers and bank architects.
• AI-native approach to software architecture, using tools such as Cursor and Claude Code.

• Own the target architecture by defining platform structure and service boundaries.
• Lead technical transformations, including on-premises to cloud and MSSQL to PostgreSQL migrations.
• Stay involved during implementations to align with architectural vision and identify issues.
• Create and maintain architectural documentation such as RFCs and ADRs.
• Drive adoption of AI as a core architectural principle within services and development lifecycle.

Hybrid work model requiring 2 days per week in the office in Warszawa.