Senior Fullstack Engineer - Business Banking - Core Banking
OakNorthLondon, England, United Kingdom
Posted January 28, 2026
Full Time
About the Company
OakNorth Bank is a fintech company that empowers entrepreneurs to realise their ambitions, understand their markets, and apply data intelligence to everyday decisions to scale successfully at pace.
Job Description
At OakNorth, we're on a mission to empower the UK's most ambitious businesses. We're looking for a Senior Fullstack Engineer to join our Core Banking team, working on large-scale systems and financial products. The role involves owning the financial accounts domain, managing our ledger, and building resilient systems.
Requirements
- Strong technical background with 5+ years of experience designing and engineering large-scale systems
- Experience with DevOps culture, continuous deployment, and test-driven development
- Knowledge of Python, PostgreSQL, BigQuery, MySQL, TypeScript, React, and AWS
- Familiarity with transaction monitoring, financial crime prevention, AML, and fraud detection (nice to have)
- Experience using Thought Machine Vault Core (nice to have)
Benefits
- Generous holiday allowance
- Enhanced family leave allowances
- Competitive salary and equity
- Good kit (laptop)
- Team socials and company socials
- Commuter support (cycle to work and EV scheme)