Senior Product Engineer - Agentic AI

JR United Kingdom; Slough; On-site; GBP 50,000 - 80,000; Full time

Job summary

A leading technology company is seeking a Senior Product Engineer to join their innovative team in Slough. You will be pivotal in transforming B2B payments with AI, shaping product decisions, and driving user engagement. The ideal candidate is curious, technologically adept, and passionate about building products that resonate with users. If you're ready for a challenge in a fast-paced, AI-driven environment, we'd love to hear from you.

Qualifications

• Passionate about building user-centric products
• Experience with modern tech stacks and AI
• Eager to influence product decisions and culture

Responsibilities

• Transforming B2B payment processes using AI
• Working across the stack from UX to backend
• Contributing to tech decisions and company culture

Skills

Product Development

User Experience

AI Architectures

API Design

Prompt Engineering

Tools

TypeScript

Next.js

Vercel

Supabase/Postgres

Tailwind

Job description

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Senior Product Engineer - Agentic AI, Slough

Client:

Location:

Slough, United Kingdom

Job Category:

Other

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EU work permit required: Yes

Job Views:

4

Posted:

26.06.2025

Expiry Date:

10.08.2025

Job Description:

Payments might seem slick for consumers, but businesses still trade with each other manually. Every year, millions of people work to exchange documents, emails, phone calls, checks, and bank transfers worth tens of trillions of dollars.

Lunos is transforming this sleepy world of B2B payments, starting with an AI partner that ensures businesses get paid by managing their receivables just like a human would—if they worked on it 24/7, never forgot anything, and read every message ever sent to them.

We’re a small team with big ambitions, backed by top-tier VCs who were early backers of companies like Stripe and Airbnb. We’re building in a modern stack (TypeScript, Next.js, Vercel, Supabase/Postgres, Tailwind), blending powerful agentic AI architectures, curated LLM pipelines, quantitative methods, and robust SaaS foundations.

We’re looking for Founding Engineers who:

• Are deeply curious and passionate about building products users truly love
• Get frustrated when things don’t move fast enough
• Want their voice to shape product decisions, tech choices, and company culture
• Enjoy the freedom and challenge of working across the stack, from intuitive UX and robust API design to AI architectures and prompt engineering
• Believe AI is fundamentally reshaping the world—and want to be part of it

Sound like your kind of adventure? Let’s talk.