Software Engineer (Full Stack)

Humaans; Greater London; Hybrid; GBP 85,000 - 120,000; Full time

Benefits offered by this job

Market-leading compensation

25 days PTO

Share options (5-year)

Quarterly team events

Private health, vision & dental

MacBook provided

Enhanced parental leave 16 weeks

Job summary

Humaans is hiring a Software Engineer to help build and evolve a next‑generation AI‑powered HR platform. You’ll work across the product and stack, shaping features from definition to release, spanning frontend and backend, infrastructure, and integrations to deliver a better customer experience.

You’ll collaborate with Product and Design, own features end‑to‑end, and contribute to architecture while shipping high‑quality software.

Qualifications

• Experience building and shipping full‑stack web applications, ideally within SaaS.
• Good knowledge of TypeScript and an appreciation for the language.
• Experience working across frontend and backend systems.
• An appreciation for design, usability and digital product craftsmanship.
• A product mindset and an interest in understanding the problems behind what you’re building.

Responsibilities

• Shape the product from definition through to release.
• Build end‑to‑end features across our frontend and backend.
• Fix bugs, improve infrastructure and support customers when engineering input is needed.
• Write backend TypeScript across Node, Postgres, Redis and Kubernetes.
• Write frontend TypeScript using React.
• Expand our third‑party integration marketplace.
• Contribute to technical architecture planning as the product evolves.
• Support our Sales and Marketing teams when engineering context is useful.

Skills

Full-stack web apps

TypeScript

Frontend & Backend

Product mindset

Collaboration

Tools

React

Node.js

PostgreSQL

Kubernetes

Job description

Humaans is building the next generation of infrastructure for the workplace; software designed for companies that are scaling fast, operating globally, and pushing into new boundaries. What started as a system of record has evolved into a broader platform for operating people globally. With Athena, our agentic AI layer, Humaans moves beyond data management into intelligent orchestration, connecting workflows across HR, IT, Finance, and Operations so organisations can act faster and with greater confidence, redefining how work gets done.

We work with ambitious teams across Europe and the US, from AI-native companies like Lovable, Poolside, Fyxer AI, and Tandem Health, to established, high-growth organisations scaling internationally and through acquisition, including Quantexa, Sellpy, Manychat, Gigs, Croud, and Threecolts. These teams don’t buy software for features,they buy leverage. The ability to run faster, cleaner, and with more control as complexity compounds.

To date, we’ve raised $20m in venture funding from some of the most respected founders, operators, and funds in technology: Lachy Groom (Physical Intelligence), Stewart Butterfield (Slack), Tobias Lütke (Shopify), Dylan Field (Figma), Jeff Weiner (LinkedIn), Claire Johnson (Stripe), Oliver Jay (OpenAI), Jay Simmons (Bond) as well as Y Combinator, Moonfire, Frontline Ventures, Pathlight Ventures, and Exor.

If you have massive ambition and want to work on a hard problem, with a small team that moves fast, at a moment when the category is genuinely up for grabs - this is it.

The role

We’re looking for a Software Engineer to help us build and evolve Humaans.

We obsess over the details and quality of our user-facing features and their implementation. At the same time, we move fast by creating focus and building on high-quality foundations.

This is an end-to-end engineering role where you’ll contribute across the product and stack. You’ll help shape features from definition through to release, build across frontend and backend, improve our infrastructure and integrations, and get involved wherever engineering can help us create a better product and customer experience.

What you’ll do

Help shape the product from definition through to release

Build end-to-end features across our frontend and backend

Fix bugs, improve infrastructure and support customers when technical input is needed

Write backend TypeScript across Node, Postgres, Redis and Kubernetes

Write frontend TypeScript using React

Expand our third-party integration marketplace

Contribute to technical architecture planning as the product evolves

Support our Sales and Marketing teams when engineering context or expertise is useful

What we’re looking for

Experience building and shipping full-stack web applications, ideally within SaaS

Good knowledge of TypeScript and an appreciation for the language

Experience working across frontend and backend systems

An appreciation for design, usability and digital product craftsmanship

A product mindset and an interest in understanding the problems behind what you’re building

Comfort working across features, bugs, infrastructure and integrations depending on what the product needs

The ability to collaborate closely with engineers, Product and Design to take ideas through to production

A high degree of ownership and a focus on delivering useful, high-quality experiences for customers

You may not be a great fit if

You prefer specialising exclusively in frontend, backend or infrastructure rather than working across the stack

You want to receive fully specified requirements rather than contributing to how features are shaped

You’re more interested in technical complexity than the quality and usefulness of what customers experience

You prefer working on one narrow area rather than moving between product features, infrastructure, integrations and customer problems

You’re uncomfortable contributing outside traditional engineering boundaries when Sales, Marketing or customers need technical support

You prefer optimising for either speed or technical perfection rather than finding the right balance between the two

This is an in-person role. Our team comes together in the office Monday through Thursday, while most of the team collaborates in person on Mondays, Tuesdays, and Thursdays.

Early stage startups can be messy – we know that. We're putting effort in providing you with the best employee experience and a quality driven environment in exchange for trusting us.

Market-leading compensation that reflects your value

25 days paid time off each year plus public holidays

Share Options with 5-year exercise window so you don’t feel pressure to exercise if you leave

Quarterly team events, and company offsites

Top tier private coverage for health, vision and dental care

A new MacBook and tools you need to do your best work

Enhanced parental leave with up to 16 weeks for primary and 4 weeks for secondary

HR tech is having its AI moment and we’re positioned to own it. Humaans started as a next-gen HRIS taking on large incumbents in a massive market. We’ve since evolved into something even bigger: an AI platform that sits across workforce data and automates the operational layer of HR entirely; the natural progression of what we’ve been building toward.

The product is highly differentiated. It’s built around a structured workforce data model that makes AI reliable in an HR context, something no one else has gotten right. Customers notice the difference immediately.

We’re backed by Y Combinator, Lachy Groom, Moonfire, Frontline Ventures, and operators who’ve built some of the most consequential software companies of the last decade: the founders of Slack, Figma, and Shopify, and Asana’s former CRO and Head of OpenAI International.

We’re a small team with an unapologetically high bar. It shows up in the product, in how we communicate, and in the standards we hold each other to.

Our Commitment to Diversity

At Humaans we’re looking for genuinely good people that are transparent and emphatic. We’re committed to providing equal opportunities, a diverse and inclusive work environment, and ensuring a fair interview process for everyone. You’re welcome to apply no matter your gender, ethnicity, sexual orientation, religion, civil or family status, age, disability, or race.

Privacy notice

We care about your privacy. When you apply for a role at Humaans, we’ll collect and process your personal data as part of our recruitment process. This includes things like your CV, contact details, and any other information you choose to share. We may also contact you about future opportunities. You can ask us to delete your data at any time. For more details, see our Privacy Policy .