Athereon

(Senior) Software Developer Frontend / React (m/w/d)

Saarbrücken full-time Mid Salary not listed
full-time Mid level Technology & IT Curated
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About the role

Your mission

You develop features and improvements across the full stack of our SaaS application – both on the backend (Django / Django REST Framework, FastAPI) and the frontend (React / TypeScript) – consistently leveraging AI-assisted development tools like GitHub Copilot or Cursor to deliver faster and more efficiently.
As an experienced software developer, you collaborate closely with both development teams and coordinate with all relevant stakeholders (product management, UX, sales, etc.).
You actively help drive our AI First Development Culture: you explore new tools, share best practices within the team, and help integrate AI meaningfully into our daily workflows.
You support the technical documentation of the product.
You conduct AI-assisted code reviews, help apply AI tools in day-to-day development, and support ticket distribution and steering of the development process.

Your profileA completed degree in computer science or a related IT-focused field, or a completed vocational training as an IT specialist in application development (Fachinformatiker/-in Anwendungsentwicklung).
At least 3 years of relevant full-time professional experience – ideally in roles where you worked across both backend and frontend.
Experience with Python and backend development using Django / Django REST Framework; experience with FastAPI is a plus.
You are confident in designing and developing REST APIs, as well as working with relational databases (e.g. PostgreSQL) and ORM-based data modeling.
You have hands-on experience with React and building single-page applications; you are confident working with JavaScript / TypeScript and the ES6 standard library. Experience with frontend frameworks such as Ant Design or Material UI is a plus.
You work routinely with AI-assisted coding tools (e.g. GitHub Copilot, Cursor, or comparable) and know how to critically assess their output and integrate it sensibly into existing workflows.
You're eager to help shape our AI First culture – you try out new tools, share your experiences, and help the team work smarter.
Beyond home office, you also value exchanging ideas with colleagues and the sense of team spirit on site.

Why us?
At Athereon GRC, we develop smart software that advances companies, organizations, and institutions across the private sector, public sector, and social services in the areas of information security and compliance. As an agile and fast-growing company, we combine technological excellence with a genuine hands-on mentality – here, your contribution truly matters.
Bring your expertise and personality to our team – we're looking for people who are passionate about IT, think outside the box, and are eager to take on responsibility.
Our client portfolio ranges from global market leaders and hidden champions to innovative mid-sized companies across a wide variety of industries – so it's guaranteed never to get boring.

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Interview prep

Walk in with sharper answers.

Use this as a quick practice sheet before you speak with the employer.

Mid
Technology & IT Javascript MySQL Project Management Python Sales Mid level

Likely questions

  1. Tell us about work you have done that is close to the (Senior) Software Developer Frontend / React (m/w/d) role.
  2. How would you approach your first 30 days at Athereon?
  3. Which of Javascript, MySQL and Project Management have you used recently, and what did it help you achieve?
  4. Describe a time you solved a problem without waiting to be told exactly what to do.
  5. How do you handle busy days, changing priorities, or pressure at work?

Prepare before the call

  • A recent example that proves your experience with Javascript, MySQL and Project Management.
  • One short story with a problem, your action, and the result.
  • Two examples that show the strengths listed on your CV.
  • A clear reason why this role and company interest you.
  • Your availability, preferred work style, and salary expectations.

Ask them

  • What would success look like in the first 90 days?
  • What are the main problems this hire should help solve?
  • How does the team give feedback and measure good work?
  • What does a normal working week look like for this role?
Practice line

I am interested in the (Senior) Software Developer Frontend / React (m/w/d) role because I can bring practical experience in Javascript, MySQL and Project Management, learn the team quickly, and contribute to the outcomes Athereon needs from this hire.

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