As a Staff Engineer at throxy, you will lead the development of our AI-powered sales infrastructure, moving beyond simple tools to deliver guaranteed revenue outcomes. You’ll own end-to-end projects—from custom scraping engines to autonomous calling systems—working alongside a senior, AI-augmented team to scale a business already seeing monthly growth.
Staff Engineer / Tech Lead at throxy
throxy is a venture-backed London AI startup moving past simple tools to sell guaranteed revenue outcomes through vertical AI sales agents. We’re seeking an AI-native Staff Engineer with a player-coach mentality to architect autonomous calling infrastructure and lead technical projects within our senior engineering team. If you have a background at high-calibre firms like Stripe or Revolut and are ready to ship code that directly generates pipeline for Fortune 500 customers, we want to hear from you.
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Location
London, United Kingdom
Compensation
Not Disclosed
Company
throxy
Role overview
Content & Collaboration SoftwareLondon, United KingdomSeed (VC-backed)
Throxy builds vertical-specific AI Sales Agents power outbound sales for companies selling into legacy industries, an AI‑native, fully managed service that delivers qualified meetings.
We’re looking for someone who can help us scale and keep accelerating.
Backed by Base10 Partners, Y Combinator, GoHub Ventures, Circle & Co, Palm Drive Capital.
What you will do
- Architect and build a next-generation dialer infrastructure from scratch, integrating autonomous AI agents at the core of the calling experience.
- Develop an AI inbound SDR system capable of autonomously handling thousands of monthly callbacks to qualify leads and book meetings.
- Engineer sophisticated intelligence layers and custom prospecting engines that extract signals from calls to optimize targeting and lead generation logic.
Who this is a fit for
- Possesses a deep computer science background and is a full-stack generalist with expert-level proficiency in TypeScript and AWS environments.
- Demonstrates 1.5+ years of experience using AI development tools like Cursor or Claude and has built multiple end-to-end products from scratch.
- Exhibits a player-coach mentality, having previously led technical projects at high-calibre companies like Stripe, Revolut, or FAANG while remaining hands-on in execution.
Why this role is remarkable
- Build outcome-oriented AI systems that directly drive revenue for global enterprises, ensuring your technical contributions have immediate, measurable business impact.
- Join a high-growth, venture-backed startup with proven product-market fit that is scaling rapidly month-over-month while maintaining a small, high-calibre engineering team.
- Work in an AI-native environment where tools like Cursor and Claude are fundamental to the workflow, allowing for rapid iteration and shipping within a 72-hour offer cycle.
How Jack & Jill work together
I get to know what you’re great at, then find roles you’d never find yourself.Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.
I recruit from Jack’s network and make the intro when I spot a great match.And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.
Jack gets to know what you're great at and what you want next, then searches 15 million jobs daily and helps you discover roles at companies like this.
Meet Jack
What happens next?
Jack’s an AI agent for job searching and career coaching. He works for you.
Jill is the AI recruiter working for the company. She recruits from Jack’s network.
If your profile’s a match and throxy wants to meet, Jill will make the intro. In the meantime, Jack will send you excellent alternatives.