Senior Software Engineer (Full Stack)

Humaans; Greater London; On-site; GBP 65,000 - 100,000; Full time

Benefits offered by this job

Market-leading compensation

25 days paid time off

Share Options with 5-year exercise

Free Thursday lunches at HQ

Top tier private coverage for health,

A new MacBook and tools

Enhanced parental leave

Job summary

Humaans is seeking a frontend engineer to help shape the product from concept to release. You will write frontend TypeScript in React, build end-to-end features, fix bugs, and expand our integration marketplace while shaping the technical architecture.

You’ll collaborate closely with product teams and designers, contributing to a high-quality, customer-valued product in an in-person office setting, with strong emphasis on design craftsmanship and user value.

Qualifications

• Multiple years of industry experience in a full stack web app development role (ideally in SaaS).
• Great knowledge of TypeScript and an appreciation for the language.
• Appreciation for design and digital product craftsmanship.
• Experience collaborating directly with product teams and designers, and a proven track record of delivering value to customers or users.

Responsibilities

• Help us shape the product from definition to release.
• Build end to end features, fix bugs, improve infra, support customers.
• Write frontend TypeScript in React.
• Expand our 3rd party integration marketplace.
• Contribute to our technical architecture planning.
• Support sales and marketing teams.

Skills

Full stack web app development

TypeScript

Design appreciation

Cross-functional collaboration

React

Tools

React

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.

Your day to day

Help us shape the product from definition to release

Build end to end features, fix bugs, improve infra, support customers

Write frontend TypeScript in React

Expand our 3rd party integration marketplace

Contribute to our technical architecture planning

Support sales and marketing teams

Skills

Multiple years of industry experience in a full stack web app development role (ideally in SaaS)

Great knowledge of TypeScript and an appreciation for the language

Appreciation for design and digital product craftsmanship

Experience collaborating directly with product teams and designers, and a proven track record of delivering value to customers or users

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
• Free Thursday lunches at HQ, 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 .