Staff Software Engineer (Fullstack / Remote UK)

TalentCo are delighted to be working with a fast-growing Agentic AI startup looking to hire a high-calibre Staff Software Engineer into their growing engineering team in Europe, having recently closed a significant seed funding round.

This hire can be based fully-remote anywhere in the UK (or Western Europe), 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 work across the entire stack, developing high-performance front-end experiences and scalable back-end systems that power real-time AI-driven workflows.

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

As Staff Software Engineer (Fullstack) you will:

• Design and build full-stack applications that power AI-driven workflows for enterprise users.
• Develop high-performance front-end interfaces for AI agent control, monitoring, and visualization.
• Build scalable backend services that support real-time AI interactions, knowledge retrieval, and automation.
• Optimize AI-powered UIs to ensure seamless and intuitive user experiences.
• 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 full-stack production applications, having worked in high-bar engineering environments, particularly startups or scale-ups.
• Proficiency in modern web technologies, including React, TypeScript, and Node.js.
• Experience with backend development using Python.
• 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
• Meaningful early-stage equity
• Fully remote employment contract
• Work from anywhere policy