Senior Fullstack Engineer (.NET) at saas.group – Europe, Remote

Software Development
November 4, 2025
Full Time
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Job Description

What is saas.group?

Think of us as the driving catalyst behind your favorite software success stories. saas.group, established in 2017, is on a mission to turbocharge promising B2B SaaS ventures, unlocking their full potential. As a Software-as-a-Service portfolio powerhouse, we specialize in acquiring small software treasures and polishing them into industry stars. With a dynamic, fully remote team of nearly 350+ colleagues spanning 50+ countries we are truly global and we are rewriting the playbook on SaaS innovation and collaboration. We grow 23 exciting brands under our umbrella. Feel free to explore our Candidate’s Hub to get an insider’s view, dive into our culture, gain valuable insights into our teams and how we work.

Profile Overview

We’re looking for a curious, product-minded Senior Full-Stack Engineer to join a small, newly formed team within one of our future acquisitions. You’ll help shape the next chapter of a well-established appointment booking SaaS platform that is now entering a major modernization phase, both technically and visually.

You’ll collaborate directly with the brand lead and another engineer, helping to build a lean, autonomous, and high-impact development team. This is a hands-on role for someone who enjoys solving complex product and technical challenges end-to-end, from architecture to deployment, in an agile and pragmatic environment.

Your immediate impact in the first 3-6 months will be:

  • Take ownership of the product’s codebase during the transition from the founders, ensuring smooth knowledge transfer and business continuity.
  • Help define and implement the technical modernization roadmap — including a migration to Stripe, a new React-based frontend, and building a reliable, maintainable development infrastructure.
  • Set up or enhance the CI/CD pipeline, testing frameworks, and basic DevOps automation..

Your responsibilities

  • Design, develop, test, and deploy new product features using .NET (C#) on Azure and React on the frontend.
  • Write clean, maintainable, and well-documented code, balancing innovation with pragmatism.
  • Collaborate with the brand lead, designers, and future engineers to build an agile development culture from the ground up.
  • Help shape architectural decisions and ensure a smooth evolution from legacy systems.
  • Contribute to a culture of autonomy, curiosity, and continuous improvement.
  • Take ownership of development workflows, testing coverage, and release practices.

What You bring to the table

  • 5+ years of professional experience in full-stack software development, preferably in product-oriented SaaS companies or startups.
  • Strong knowledge of .NET / C#, Azure, jQuery & React
  • Solid experience working with SQL Server and T-SQL and familiarity with ORMs.
  • Proven experience in frontend and backend development with a good eye for user interfaces and usability.
  • Experienced with Git-based workflows, SVN a nice-to-have
  • Strong record with RESTFul API design (Swagger/OpenAPI)
  • Solid understanding of software design and architecture, automated testing, Infrastructure as Code (e.g. Terraform, GitHub Actions) and CI/CD pipelines.
  • Comfortable working in a small, fast-moving team where ownership and initiative are key.
  • Product mindset: you care about why you’re building something and how that will benefit users.