Founding Engineer (Backend) at throxy (X25)
$65K - $80K  •  
Vertical AI agents that run the sales funnel on autopilot
London, England, GB
Full-time
US citizenship/visa not required
3+ years
About throxy

At throxy, we are leading humanity’s transition to an AI-first workforce in a post-labour society, where work becomes a choice, not a necessity.

Our vision is simple: humans should create, connect, and innovate, while AI handles the execution. In this future, people work for passion, not pressure. Ideas come to life instantly, unburdened by the manual grind of execution.

Sales, at its core, is human. Emotion, instinct, and relationships drive decisions, things AI can’t replace. But too much of today’s sales process is spent on mindless, repetitive tasks. We exist to change that.

By automating the low-value, high-volume work, we free sales teams to focus on what they do best: building trust, forging real connections, and closing transformative deals.

The world of work is evolving. We’re making sure it evolves in your favour.

About the role

About Throxy

Throxy builds vertical-specific AI Sales Agents for legacy industries where generic outreach tools fail. In just six months we’ve grown to >$1 M ARR.

We’re looking for someone who can help us scale and keep accelerating.

What You’ll Do

  • Build the workflow backbone – build and create pipelines that ingest, deduplicate and enrich millions of company & contact records.
  • Productionize agentic pipelines – turn prototype LLM production grade pipelines
  • Guarantee speed & resilience – instrument tracing, metrics, and alerting so the platform stays sub-second and fault-tolerant as we grow to hundreds of customers.
  • Set backend standards – establish schema design and observability patterns that every future engineer will follow.

We’re Looking For

  • High agency, we believe agency will be the defining trait in the future of work.
  • Experience designing and scaling production databases from zero to high-traffic workloads.
  • 2-4 years shipping production code across TypeScript, React, Next.js.
  • Comfortable juggling imperfect specs, moving extremely fast, rapid iterations and a intense on-site cadence.

Why Throxy?

We’re a tight-knit team of engineers and operators committed to solving hard problems that push companies forwards. If this excites you, we'd love to hear from you.

Our organization is very flat, and our team is small and talent dense. We particularly like people who are truthseeking, passionate, and creative. We enjoy spirited debate, crazy ideas, and shipping code.

Ready to Build?

Send a quick note with, GitHub and anything you’re proud of to founders [at] throxy [dot] com

We reply within 24 hours.

Technology
  • Expertise in NextJS, React, TypeScript and AI implementation within apps
  • Strong problem-solving abilities and eagerness to learn new technologies
  • Passion for AI and its potential to transform how people work
Interview Process
  1. Initial call with a founder
  2. Technical Interview
  3. On-site interview
  4. Reference checks

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