Acquired Talent Ltd.
Staff Software Engineer
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Staff Software Engineer
Salary: £150,000 - £250,000 + Competitive Equity
Location: London (Old Street, 5 days onsite)
Job Title: Staff Software Engineer
About the Role
We're on the lookout for an exceptional Staff Software Engineer to join one of London's fastest-growing AI startups building autonomous AI voice agents that are redefining how businesses interact with their customers.
This is a unique opportunity to build production AI systems powered by the latest Large Language Models, designing intelligent agents capable of handling complex customer conversations, reasoning through problems, and autonomously completing real-world tasks. You'll work at the cutting edge of applied AI, helping shape products where LLMs aren't simply an added feature—they're the core of the user experience.
As a senior member of the engineering team, you'll own products end-to-end, partnering directly with customers to understand their workflows before designing and shipping AI-native solutions that solve genuine operational challenges. You'll be building highly reliable, scalable systems that combine LLMs, voice technologies, event-driven architectures and cloud infrastructure to create seamless, autonomous customer experiences.
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Joining at this stage means becoming one of the senior technical leaders in a well-funded, high-growth startup. You'll have significant ownership over technical direction, influence product strategy alongside the founders, and help define engineering best practices as the company scales.
What We Need from You
- Design, build and ship production AI applications using Python, TypeScript and modern cloud infrastructure.
- Build intelligent AI agents powered by Large Language Models, integrating prompting, tool use, retrieval, structured outputs and agentic workflows into production systems.
- Develop scalable backend services and event-driven architectures that power real-time AI and voice experiences.
- Own projects from customer discovery through implementation, deployment and continuous iteration.
- Build integrations with third-party APIs, customer CRMs and external platforms to enable autonomous workflows.
- Know when to rapidly prototype AI capabilities and when to invest in long-term scalability, reliability and performance.
- Champion engineering excellence through testing, observability, security, documentation and best practices.
- Collaborate closely with founders, customers and product teams to shape the future of AI-powered software and deliver exceptional user experiences.
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If you are an experienced Software Engineer with a passion for AI, LLMs and building intelligent products from the ground up, please apply or send your CV directly to callum@acquiredtalent.co.uk.
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