Senior Backend Engineer (Node.js / Typescript)

TalentCo; United Kingdom; Remote; GBP 130,000 - 180,000; Full time

Job summary

TalentCo is partnering with a Silicon Valley startup to hire Senior Backend Engineers in the UK. This fully remote role lets you build scalable backend systems powering real-time AI-driven workflows.

You will work with AI researchers, engineers and product teams to deploy enterprise-grade solutions, integrating LLMs, RAG, and automation while maintaining robust, minimal-dependency code in a fast-paced, autonomous environment.

Qualifications

• Must have 6+ years building production-grade applications.
• Proficient with Node.js and TypeScript in scalable backend systems.
• Strong knowledge of AWS, GCP, or Azure cloud architectures.
• Experience with LLMs, chat interfaces, and agentic workflows.
• Ability to work in fast-paced, high-autonomy environments.
• Collaborative in cross-functional teams with engineers, designers, researchers.

Responsibilities

• Design and build applications powering AI-driven workflows for enterprise users.
• Build scalable backend services supporting real-time AI interactions and automation.
• Collaborate with AI researchers and ML engineers to integrate LLMs and RAG into production apps.
• Ship robust, minimal-dependency code with enterprise-grade performance.
• Iterate AI-driven products balancing user needs and technical feasibility.

Skills

Backend development

Node.js

Typescript

Cloud platforms

LLMs

RAG

High autonomy

Cross-functional collaboration

Job description

TalentCo are delighted to be working with a fast-growing Agentic AI startup looking to hire several high-calibre Senior Backend Engineers into their growing engineering team in the UK, having recently closed a significant seed funding round.

This hire can be based fully-remote anywhere in the UK, for this Silicon Valley headquartered startup.

You will be at the forefront of building and scaling AI-powered applications, transforming how enterprises interact with intelligent agents. You’ll focus on developing scalable back-end systems that power real-time AI-driven workflows.

This role requires strong software engineering skills, a deep understanding of backend development, and the ability to work in a fast-paced, AI-first environment. You’ll collaborate with AI engineers, AI researchers, full-stack engineers and product teams to build enterprise-grade solutions that enable seamless AI-human interactions.

• Design and build applications that power AI-driven workflows for enterprise users.
• Build scalable backend services that support real-time AI interactions, knowledge retrieval, and automation.
• Work closely with AI researchers and ML engineers to integrate LLMs, Retrieval-Augmented Generation (RAG), and automation into production-ready applications.
• Ship robust, minimal-dependency code that performs efficiently in enterprise environments.
• Continuously iterate and refine AI-driven products, balancing user needs with technical feasibility.

We want to hear from you if you have:

• 6+ years of hands-on experience building production applications, having worked in high-bar engineering environments, particularly startups or scale-ups.
• A backend focus, with proficiency in modern web technologies, namely Node.js and Typescript
• Strong knowledge of cloud infrastructure (AWS, GCP, or Azure) and scalable architectures.
• Understanding of AI-powered applications, including LLMs, chat interfaces, and agentic workflows.
• Ability to work in a fast-paced, high-autonomy environment, solving complex problems and delivering impact.
• Strong collaboration skills, with experience working in cross-functional teams with engineers, designers, and AI researchers.

What do they offer?

• Salary between £130k-180k dependent on experience