Senior Full Stack Software Engineer

Humaans; Greater London; On-site; GBP 70,000 - 100,000; Full time

Job summary

Humaans is seeking a skilled full‑stack engineer to help shape and deliver high‑quality SaaS features. You will work across backend and frontend in a fast-paced environment, collaborating closely with product managers and designers to launch customer‑facing improvements.

You will contribute to architecture planning, write robust backend in Node/TypeScript, build frontend in React, and help expand integrations while supporting sales and marketing teams.

Qualifications

• Experience in full stack web app development (ideally SaaS).
• Strong knowledge of TypeScript and appreciation for the language.
• Appreciation for design and digital product craftsmanship.
• Experience collaborating with product teams and designers and delivering value to users.

Responsibilities

• Write backend TypeScript in Node, Postgres, Redis, Kubernetes.
• Write frontend TypeScript in React.
• Build end-to-end features, fix bugs, improve infra, support customers.
• Contribute to architectural planning and expand 3rd party integrations.
• Support sales and marketing teams.

Skills

TypeScript

Full stack development

SaaS experience

Design & product craftsmanship

Collaboration with product & design

Tools

React

Node.js

PostgreSQL

Redis

Kubernetes

Google Cloud Platform

GitHub CI

Job description

Requirements

• 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

What the job involves

• Our tech stack today consists of TypeScript, JavaScript, React, Node, Postgres and Redis. We use GitHub for code and continuous integration to deploy to Kubernetes on Google Cloud Platform
• We have a public REST API and our browser client uses a realtime WebSocket API. We obsess over details and quality of the user facing features and their implementation. Yet we move fast by creating focus and leveraging high quality foundations
• Help us shape the product from definition to release
• Build end to end features, fix bugs, improve infra, support customers
• Write backend TypeScript in Node, Postgres, Redis, Kubernetes
• Write frontend TypeScript in React
• Expand our 3rd party integration marketplace
• Contribute to our technical architecture planning
• Support sales and marketing teams