Senior Software Engineer

At Mister Spex, we're reshaping the technological backbone that powers seamless shopping experiences, from online orders to in-store purchases. As a Senior Software Engineer (f/m/d), you'll help shape and scale our ERP and payment ecosystem. Your work connects our internal architecture with leading payment providers, ensuring smooth, secure and fast transactions for millions of customers across Europe.

If you enjoy building clean, performant, and reliable systems in a collaborative environment, this is the role for you!

How you contribute

• Design and develop scalable ERP features and architectural components
• Build and maintain integrations with internal systems and major payment providers (e.g. PayPal, Klarna, credit cards, POS)
• Work with C/AL, AL and SQL; extend solutions using .NET, JavaScript and other technologies
• Implement unit and functional tests to ensure code quality and system reliability
• Manage and evolve source code in Git, contributing to clean and maintainable development workflows
• Improve system performance and stability, especially in high-load and large-data environments
• Collaborate cross-functionally to translate business needs into robust technical solutions

Do you have experience in Web services?, * Advanced functional and technical knowledge of Microsoft Dynamics NAV modules

• Strong experience with SQL, web services (REST/SOAP) and system integrations
• Experience with webshops or payment providers is a strong plus.
• Familiarity with Git and ideally Azure DevOps (CI/CD, pipelines)
• Additional experience with .NET, JavaScript, Python, PowerShell or Azure is welcome
• Experience working with large databases or high-transaction environments is a plus
• A collaborative mindset, strong communication skills and a proactive, solution-oriented approach

• Work-Life Balance: Achieve the perfect work-life balance with our flexible and hybrid working model - bring your dog to the office, work abroad within the EU for up to 6 weeks, and even take a sabbatical
• Focus on Eye Health: Once a year, we offer you a free eye health check-up at one of our stores
• Your Well-Being: Your health is important to us, which is why Mister Spex subsidizes your personal Wellhub membership
• Exclusive Vouchers: Start your journey with a €200 voucher for a pair of glasses from our Mister Spex assortment and enjoy an annual voucher to celebrate each Mister Spex anniversary; benefit from a discount of up to 40% on our entire assortment
• Sustainable Mobility: We care about your mobility and the environment - receive a 50% subsidy on public transport or get a discounted bike through our partner
• Mental Health Support: Access mental health support through our dedicated partner
• Family Support: We support parents with 10 days of paid vacation for their children up to age 12 in case of illness, fully covered by Mister Spex

Diversity and Equal Opportunity: You Matter to Us!

Diversity and equal opportunity are more than just words to us. Here, you work on equal footing because every contribution counts and is valued. An open feedback culture is key to our collective success. Regardless of your background, gender, religion, disability, age, or identity, we are excited to welcome you. Your personality is our strength!