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Principal Engineer React, Typescript, C#, AWS; Serverless), MySQL
Job in
City Of London, Central London, Greater London, England, UK
Listed on 2026-01-11
Listing for:
Smart Sourcer
Full Time
position Listed on 2026-01-11
Job specializations:
-
Software Development
Full Stack Developer, Cloud Engineer - Software
Job Description & How to Apply Below
Location: City Of London
Principal Full Stack Engineer React, Typescript, C#, .NET Core, MySQL, AWS Services (serverless)
Outstanding permanent opportunity to join this global, market leading, B2B SaaS tech business as a Principal Engineer (Full Stack) / Lead Full Stack Developer with deep expertise in React, Typescript, C#, .Net Core, MySQL, AWS Serverless Services and event driven architecture. This business is embracing AI and bleeding edge development practices and offers the opportunity to help them to evolve and automate their Platform as a Service (PaaS) environment.
What Youll Be Doing:
- Own architecture and technical decisions across squads; accountable for how software is built and shipped.
- Design and develop distributed, scalable microservices (C# .NET Core or Node.js) and REST/JSON APIs.
- Build modern React + Type Script UIs with component-driven design, advanced state management, and reusable frameworks.
- Leverage AWS services (Lambda, API Gateway, SQS/SNS, Step Functions, S3, IAM) to deliver secure, event-driven systems.
- Embed testing-first practices (TDD/BDD, contract tests, Jest/RTL, Playwright/Cypress, xUnit/NUnit) to raise code...
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