Senior Fullstack Engineer - Platform Security

Join our highly skilled team of developers - breaking new ground and shaping the future of retail. We dare to dream big, we have the courage to keep raising the bar, and we’re committed to being a force for good in retail - helping both established and fast-growing brands meet the ever-changing expectations of their customers.

Sitoo is a fast-growing technology company exploring how far we can take innovation to deliver the world’s best Unified Commerce Platform and Point of Sale. Our technology is used in more than 20 countries - a number that keeps growing thanks to our incredible team of engineers. And we have no intention of slowing down. Are you the Software Engineer we’re looking for?

About the team

The Platform Security team builds the security foundations that allows Sitoo to scale. We own identity and access across our products, authentication, authorization, roles/permissions, and we turn enterprise security requirements into product capabilities that customers can configure and operate self‑serve. You’ll work close to product and engineering teams to ship secure-by-default platform services and the admin experiences that make them usable in real life.⁠⁠

Your Mission at Sitoo

As a Fullstack Engineer at Sitoo, you'll play a vital role in building our next-generation web products. You'll join a small, agile team focused on developing the world's best Point of Sales and Unified Commerce Platform. Your work will span front and backend applications built with React, TypeScript, and Node.js. In our small team environment, your impact and influence will be significant.

What you'll do

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Own, develop and operate Sitoo’s web products

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Collaborate with the team to innovate and improve processes and tooling

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Build a scalable infrastructure in AWS

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Write tests to ensure product quality

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Manage CI/CD pipelines on GitHub

Participate in development guilds

What you'll bring to the table

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5+ years of experience as a professional fullstack developer building and maintaining web applications

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Experience writing Node.js services and frontend apps with TypeScript

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A background working in fast-growing or scaling environments

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Experience in cloud platforms (AWS, Azure, GCP)

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Fluency in English, both written and spoken

Bonus

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Azure DevOps, Github Actions or GitLab CI/CD

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IaC with CDK or similar

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E2E tests with Playwright

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AI-assisted integrated development environment or agentic coding tools like Claude Code, GitHub Copilot or Cursor

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Working with design systems / documentation in Storybook

Why Sitoo

We are forward thinkers. By turning curiosity into knowledge — and knowledge into continuous improvement — we break new ground and shape the future of retail. We believe in an inclusive culture where everyone feels like they belong. We support each other, win together, celebrate success together, and overcome challenges together.

Today, we are close to 100 dedicated experts with a positive and solution-oriented mindset. Most importantly, we take care of each other, and we never forget to have fun.

This is a hybrid role based in Stockholm or Gothenburg. Please note that we are currently unable to offer relocation support for this position, so you’ll need to hold a permanent residence permit in Sweden.