Jack & Jill

Senior Software Engineer (Full Stack)

Jack & Jill

London, England, United Kingdom · Full Time

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Experience
Any
Salary
GBP 80,000 – GBP 100,000 / year
Openings
1
Posted
26 seconds ago
Work mode
In office
Resume
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Job description

About the Company

Humaans is a venture-backed London-based startup with $20M in funding, creating innovative AI-driven infrastructure for workplace operations. Supported by prominent investors like Y Combinator and founders of Slack, Figma, and Shopify, the company focuses on enhancing HR, IT, Finance, and Operations through intelligent automation.

Role Overview

We are looking for a Senior Full Stack Software Engineer to join our team in London and contribute to "Athena," an AI platform that automates people-related workflows. Working closely with the founders, you will be responsible for managing features from concept to deployment utilizing a modern TypeScript stack.

Responsibilities

  • Develop and release complete features using TypeScript, React, and Node.js.
  • Participate actively in defining the technical architecture and maintain infrastructure, including Kubernetes deployment.
  • Collaborate with executive leadership to refine product features, understand customer needs, and grow the integration ecosystem.
  • Take full ownership of the software development lifecycle including planning, coding, bug fixing, and assisting with sales and marketing initiatives.

Qualifications

  • Significant experience building full-stack web applications, particularly in fast-growing SaaS environments.
  • Expertise in TypeScript and Node.js with solid skills in handling complex backend and frontend systems using React.
  • A demonstrated ability to solve undefined problems proactively and work effectively with product teams to create user-focused solutions.

Additional Information

Location: London, UK (Onsite)

Salary: £80,000 to £100,000 per year plus equity participation.

About Jack & Jill: Jack is an AI-powered career coach who understands candidates' strengths and aspirations, while Jill is an AI recruiter who matches talent with company needs within a specialized network. This is a genuine vacancy, although some job details may be anonymized to maintain privacy requested by clients.

Level

Senior

Tools & software

Node.js React Kubernetes required

How they work

Communication Teamwork & Collaboration Problem Solving Independence Accountability
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