Staff Software Engineer - AI

Reqiva; Greater London; On-site; GBP 200,000 - 250,000; Full time

Benefits offered by this job

Equity

Job summary

Reqiva in London is hiring a Staff Software Engineer – AI to shape product and technical direction. The role is hands-on and requires building production AI systems across Python, TypeScript, and cloud infrastructure.

The ideal candidate has 8+ years of software engineering experience, strong Python/backend skills, and a track record in AI/ML or LLM-based products. Familiarity with distributed systems and Kubernetes is essential. On-site, London location.

Qualifications

• 8+ years of software engineering experience.
• Excellent Python and backend engineering skills.
• Experience building AI/ML or LLM-based products.
• Strong knowledge of distributed and event-driven systems.
• Cloud infrastructure and Kubernetes experience.
• Experience in fast-moving startup environments.
• Ability to own architecture, coding and delivery.
• TypeScript experience is a plus.
• Voice AI or conversational AI experience is desirable.

Responsibilities

• Build and ship core product features across Python, TypeScript and cloud infrastructure.
• Design scalable, event-driven and distributed systems.
• Develop and integrate AI-powered product functionality.
• Work directly with customers to understand problems and provide technical solutions.
• Take ownership from concept through to production.
• Help establish engineering standards around reliability, testing, security and scalability.
• Move quickly when needed while building long-term foundations.

Skills

8+ years software

Python

AI/ML/LLM

Distributed systems

Kubernetes

TypeScript

Voice AI

Job description

Staff Software Engineer – AI

London | £200,000–£250,000 Base + Equity | On-site

We’re working with a fast-growing, well-funded AI company in London that is building autonomous AI voice agents used by businesses to manage customer interactions, bookings and operations.

They’re looking for an exceptional Staff Software Engineer to join a small, highly technical team and play a major role in shaping both the product and technical direction.

This is a genuinely hands-on Staff-level role. You’ll work across the core product, building and shipping production AI systems while solving complex backend, infrastructure and distributed systems challenges.

What you’ll be doing

• Building and shipping core product features across Python, TypeScript and cloud infrastructure
• Designing scalable, event-driven and distributed systems
• Developing and integrating AI-powered product functionality
• Working directly with customers to understand problems and turn them into technical solutions
• Taking ownership from initial idea and architecture through to production
• Helping establish engineering standards around reliability, testing, security and scalability
• Moving quickly when required, while knowing when to invest in longer-term engineering foundations

What we’re looking for

• 8+ years of strong software engineering experience
• Excellent Python and backend engineering skills
• Experience building and shipping AI/ML or LLM-based products
• Strong knowledge of distributed and event-driven systems
• Cloud infrastructure and Kubernetes
• Experience within fast-moving product or startup environments
• Comfortable operating across architecture, coding and delivery
• Someone who enjoys building 0→1 products and taking genuine ownership
• TypeScript experience would be beneficial
• Voice AI or conversational AI experience would be particularly interesting

This is a fantastic opportunity to join an early-stage AI business where you’ll have genuine influence over the technology and product as the company scales.

Salary: £200,000–£250,000 base + competitive equity
Location: London
Working model: 5 days per week on‑site