Senior Software Engineer (£80k–£100k + Equity) at a confidential company - VC-backed AI workpla[...] in London

Senior Software Engineer (£80k–£100k + Equity) at a confidential company - VC-backed AI workpla[...] in London

London Full-Time 80000 - 100000 £ / year (est.) No working from home possible
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At a Glance

  • Tasks: Develop and scale innovative features using modern tech like TypeScript and React.
  • Company: Join a YC-backed AI platform transforming HR infrastructure.
  • Benefits: Competitive salary, equity options, top-tier healthcare, and a dynamic work culture.
  • Other info: Collaborate with an elite team in a fast-paced, high-impact environment.
  • Why this job: Be at the forefront of AI in HR tech and shape product strategy with founders.
  • Qualifications: Experience in full-stack SaaS development, especially with Node.js and TypeScript.

The predicted salary is between 80000 - 100000 £ per year.

Salary: £80k–£100k + Equity

Company: Confidential, YC-backed AI platform for workplace orchestration.

Location: London, UK.

Job Description

Join a high-performance team building Athena, an agentic AI layer redefining HR infrastructure. You will own features end-to-end across a modern TypeScript stack, moving beyond simple data management into intelligent orchestration. Working directly with the founders, you’ll solve complex problems for global customers like Poolside and Quantexa in a fast‑scaling environment.

Why this role is remarkable

  • Work at the forefront of the AI transition in HR tech, building a differentiated platform backed by $20M from the founders of Slack, Figma, and Shopify.
  • High‑leverage environment where engineers aren't just handed specs; you'll partner with the CEO and Head of Engineering to shape product strategy and technical architecture.
  • Exceptional engineering culture with a 5‑year equity exercise window, top‑tier private healthcare, and a small, elite team that prioritises quality and craftsmanship.

What You Will Do

  • Develop and scale end‑to‑end features using TypeScript, React, Node.js, and Postgres, deployed via Kubernetes on Google Cloud Platform.
  • Architect and expand a public REST API and real‑time WebSocket infrastructure to support a growing marketplace of third‑party integrations.
  • Collaborate deeply with product and design teams to translate complex workforce data models into reliable, AI‑driven automation workflows for global enterprises.

The Ideal Candidate

  • Extensive industry experience in full‑stack SaaS development with deep proficiency in Node.js and a strong appreciation for TypeScript.
  • Proven track record of taking ownership of vague product problems and driving them to high‑quality, customer‑ready releases in a fast‑paced startup.
  • Strong product sense and design craftsmanship, with the ability to balance technical excellence with pragmatic business trade‑offs and user impact.

Senior Software Engineer (£80k–£100k + Equity) at a confidential company - VC-backed AI workpla[...] in London employer: Jack & Jill

Join a pioneering AI platform in London that is redefining HR infrastructure with a focus on innovation and quality. As a Senior Software Engineer, you'll collaborate closely with founders and an elite team, enjoying a culture that values craftsmanship and offers significant equity opportunities alongside top-tier private healthcare. This is a unique chance to shape the future of workplace orchestration while working in a high-performance environment backed by industry leaders.

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Contact Details:

Jack & Jill Recruitment Team

We think you need these skills to ace Senior Software Engineer (£80k–£100k + Equity) at a confidential company - VC-backed AI workpla[...] in London

TypeScript
React
Node.js
Postgres
Kubernetes
Google Cloud Platform
REST API Development