Full Stack Engineer (TDD / C# / JavaScript)
We are hiring a Full Stack Software Engineer with a strong test‑driven development (TDD) background to help build the next generation of a mission‑critical cybersecurity and communications platform used globally.
This is a hands‑on role focused on designing and delivering partner API integrations across a complex security ecosystem - including endpoint protection, network security, user awareness tooling, and monitoring systems.
You’ll work as part of a collaborative product team alongside full stack and front‑end developers, supported by QA and DevOps, reporting into engineering leadership.
Why This Role Matters
The next‑generation platform will provide customers with a unified view of security across distributed environments. As integrations expand, maintaining a high bar for quality, reliability, and test coverage is critical.
This role will also play a key part in strengthening TDD practices across the team - leading through code and delivery.
What You’ll Do
* Design and build API integrations across a cybersecurity‑focused product stack
* Deliver clean, maintainable full stack solutions using .NET and modern JavaScript frameworks
* Lead by example in test‑driven development practices
* Integrate third‑party systems using REST APIs, OAuth2, webhooks, and resilient patterns
* Contribute to a scalable, observable integration layer
* Collaborate with Product, QA, and DevOps to deliver high‑quality releases
* Use AI‑assisted development tools as part of your daily workflow
Requirements (Must Have)
* Experience with C# / .NET Core
* Strong experience with ASP.NET Core / Web API
* Modern JavaScript / TypeScript experience
* Experience with a component‑based SPA framework (e.g. Vue, React, or Angular)
* Proven, hands‑on test‑driven development experience
* Strong experience integrating third‑party APIs (REST, OAuth2, webhooks, retries, rate limiting)
* Solid SQL skills (e.g. MariaDB or MySQL)
* Experience with Git workflows (branching, pull requests, code reviews)
* Regular user of AI‑assisted development tools (e.g. Claude Code, Cursor, Copilot or similar)
* Strong ownership mindset and commitment to quality
Nice to Have
* Commercial experience integrating AI APIs (e.g. Claude, Bedrock, OpenAI or similar)
* Experience with AWS (e.g. EC2, RDS, Lambda, S3)
* Microservices or distributed systems experience
* Familiarity with iterative product development methodologies
* Awareness of secure‑by‑design principles (e.g. ISO 27001)
* Background in SaaS or cybersecurity environments
Benefits
* Hybrid working
* Excellent career development / Training budget
* Flexible working
If you take pride in writing well‑tested, production‑grade code and want to contribute to building critical cybersecurity software used at global scale, we’d love to hear from you.
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