Interview Questions for Hiring a Software Engineer in Switzerland
Use these interview questions to assess software engineers fairly and legally in Switzerland. Questions are grouped by competency—technical depth, problem-solving, communication, and culture fit—with clear rubrics for strong versus weak answers. Four questions carry legal risk in Switzerland and are flagged; avoid them entirely.
A structured interview protects both you and the candidate. These questions help you evaluate technical capability, how a candidate thinks through problems, and whether they'll thrive in your team. Each question has a rubric so you can compare candidates fairly.
The role of Software Engineer covers different seniority levels and specialisms. Adjust question difficulty based on the job posting—junior candidates may struggle with architectural questions; senior hires should handle them easily. Always document your assessment.
Technical Foundation & Problem-Solving
Ask candidates to work through a real problem—not trivia. This shows how they debug, ask clarifying questions, and structure solutions. Watch for communication, not just the right answer.
Strong answers include: breaking down the problem, explaining assumptions, discussing trade-offs, and admitting when they'd need to look something up. Weak answers: jumping to code, no explanation, or stating one solution as obvious.
- Walk me through a recent feature you built. How did you approach the requirements, and what would you do differently now?
- Describe a bug that stumped you. What was your debugging process?
- You need to fetch data from an API and cache it locally. What questions would you ask about requirements before coding?
- How do you decide when to refactor code versus shipping?
- Tell me about a time you had to learn a new technology or framework on the job. How did you tackle it?
System Design & Architecture
For mid-level and senior candidates, sketch how they'd design a component or service. This reveals whether they think about scalability, maintainability, and trade-offs, not just features.
Strong answers: considering multiple approaches, questioning assumptions, discussing performance or storage trade-offs. Weak answers: one-liner solutions, no justification, or overengineering for the problem scale.
- Design a simple user authentication system. What would you store, how would you handle sessions?
- How would you structure a codebase so a new engineer can onboard in a week?
- Describe the last time you chose between two technical solutions. What factors mattered?
Team, Communication & Fit
Swiss teams value directness, pragmatism, and taking responsibility. Ask about collaboration, how candidates handle disagreement, and whether they communicate progress honestly.
Strong answers: concrete examples of working cross-functionally, owning mistakes, asking for help when needed. Weak answers: blaming teammates, vague references, or avoiding accountability.
- Tell me about a time you disagreed with a colleague on approach. How did you resolve it?
- How do you keep your team informed about your progress? What if you're stuck?
- Describe a project that slipped. What was your role, and what would you do differently?
Frequently asked questions
- Which questions are illegal or risky to ask in Switzerland?
- Avoid these four entirely: (1) 'Are you planning to have children?' or questions about family plans; (2) 'What is your religion or political affiliation?'; (3) 'Do you have any health conditions or disabilities?'; (4) 'How old are you?' or questions about birth year. These violate Swiss employment law and the Constitution. If a disability is relevant to job function, ask only 'Can you perform the essential duties of this role with or without accommodation?' and be ready to discuss specific, documented accommodations. Always consult a lawyer if you have doubts.
- What's a fair way to assess a candidate's compensation expectations?
- Ask directly and early: 'What salary range are you looking for based on your experience and the market in [canton/city]?' Swiss employers can and should discuss this openly. You may also ask: 'Are you open to a 12-month vs. 13-month salary model?' or 'For this role, we offer [Pensum percentage]%. Does that align with your needs?' Document the answer in your notes. This avoids wasted interviews and respects both parties' time.
- How should I handle candidates with non-Swiss qualifications?
- Ask about relevant experience and practical capabilities, not credential names. Example: 'You studied computer science in [country]. Walk me through the projects you built and the languages you used most.' Swiss employers increasingly value proven ability over formal credentials. If they lack Swiss work experience, assess their ability to adapt to Swiss working culture: 'How have you worked in teams before? What was the communication style?' Never dismiss based on diploma source alone.
General information for Swiss employers, not legal advice. Have a lawyer confirm anything with legal consequences.