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Principal engineer, full stack (typescript, react)

London
Client Server
Principal engineer
Posted: 3 March
Offer description

Salary: £100,000 - 100,000 per year Requirements:

* Advanced full stack development skills including TypeScript backends, microservices, APIs, React, and ideally React Native (willing to learn)
* Experience of leading and mentoring engineers to drive technical excellence and a culture of collaboration
* Strong understanding of distributed systems, RDBMS (Oracle), and data modeling trade-offs
* Experience of integrating AI and agentic systems into business workflows and apps
* Good understanding of cloud-native architecture and modern engineering practices such as CI/CD, Test Automation, monitoring, and observability
* Experience of transitioning systems or platforms, including dual running and incremental switchover
* Collaborative and pragmatic mindset, comfortable working closely with Product Managers to explain technical aspects and trade-offs
Responsibilities:
* Act as a technical authority and role model for engineers across engineering teams / Agile Squads
* Lead and own technical transformation and architectural initiatives in collaboration with the Enterprise Architect
* Mentor engineers and drive high standards of quality, security, reliability, and operability across the stack
* Collaborate with Engineering Leads to help teams navigate change, migration, and transition of critical live systems
* Leverage AI and automation tools to improve processes
* Shape and evolve the platform, services, and system boundaries as the company scales
Technologies:
* AI
* Architect
* CI/CD
* Cloud
* Oracle
* React
* React Native
* Security
* TypeScript
* microservices
* JavaScript
* NodeJS
* Fullstack

More:

We are a well-established consumer-facing financial services company based in London, dedicated to helping individuals manage debt while undergoing a technical transformation and scale-up following recent investment. We offer a competitive salary up to £110k, a bonus scheme, 25 days holiday, a pension plan, and an Employee Assistance Programme. Our fantastic new offices feature wellness rooms and an onsite gym, and we embrace a flexible work environment allowing for remote work two days a week. This is an opportunity to make an impact as part of a new team in a role that you can help shape.

last updated 9 week of 2026

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