Senior Typescript & AI Backend Developer in London

Emergn is a technology and management consultancy with a mission to set our clients free. No dependency. No short-term fix. Just teaching them the real cure to their problems, so they can stay ahead of their competitors now and forever. A different kind of consultancy like this needs a different kind of team. One you might be just the right fit for.

This is a place for people who want to:

• Make a real difference. Here, you solve problems for real. No endless engagements or running up the clock. You get to see how change really works for some of the world’s greatest businesses.
• Never stop growing. We turn our expertise back on ourselves. Here, you’re always learning, stretching your thinking at the cutting edge of how organizations grow, which means staying at the cutting edge of your own growth too.
• Belong everywhere. We’re a global community of experts who work without borders. Friendly, supportive, and genuinely collaborative. Because when you’re trying to change an industry, you need people who have each other’s backs.

As a Senior Typescript & AI Backend Developer at Emergn you will design and build scalable, reliable backend systems that power AI orchestration workflows, owning core services that bring AI features to life in production. Join our team and let’s change the game together!

We want you to:

• Design and implement Node.js/TypeScript backend services that power AI workflows, including prompt management, tool calling, and multi-agent reasoning flows.
• Build and maintain integrations with LLM providers (OpenAI, Anthropic, Azure OpenAI, etc.) and implement RAG pipelines with vector databases.
• Ensure scalability, reliability, and security of backend systems through robust architecture, observability, and best practices.
• Lead technical design discussions, mentor other backend engineers, and collaborate closely with ML engineers and product managers.
• Own CI/CD contributions, automated testing, and incident response for AI backend services.

This job might be for you if you have:

• 5+ years of software development experience, with at least 3+ years focused on backend development in TypeScript/Node.js.
• Hands-on experience integrating LLM/AI APIs into production backend systems.
• Strong knowledge of API design, relational/NoSQL databases, async programming, and cloud platforms (AWS, GCP, or Azure).
• Experience with AI orchestration frameworks such as LangChain, LangGraph, or similar, and/or workflow engines like Temporal or AWS Step Functions.
• Familiarity with observability tooling, Docker, and solid testing practices in TypeScript.

What we offer:

• Work within a dynamic international team of experts.
• Excellent opportunity for personal and professional development.
• Flexible work model and the freedom to choose the tools that suit you best – Mac or Windows.
• Ability to work with modern technologies.
• Extensive catalogue of educational programs, the possibility of training and certification at the expense of the company.
• Health and life insurance.
• 23 vacation days yearly.
• Birthday gift.

About Emergn: We’re Emergn. A technology and management consultancy that believes sustainable competitive advantage doesn’t come from the latest tech or hottest trend – it comes from the way you work. That’s why our goal is to embed a complete work operating system within our customers’ businesses, so they stop reacting to change and start creating it. We do this across three areas: shaping processes to be faster, clearer, and more innovative; developing people so inspiration comes from within the organization; and designing technology solutions that bring it all together. The result? Companies don’t just get ahead for a moment. They stay ahead for an era. And make it theirs.