Senior Fullstack Developer

Converdiant is a Swedish company focused on conversion rate optimization (CRO) through data-driven usability and UX improvements. The company is developing a SaaS-based A/B testing platform to replace tools like Google Optimize, emphasizing privacy, performance, and a cookieless approach.

• Built backend services and APIs using Node.js, PostgreSQL, and Redis to support data-intensive A/B testing workflows.
• Developed scalable frontend components with Next.js to power the web interface of the testing platform.
• Integrated Google Analytics APIs to enable real-time tracking and optimization analytics.
• Contributed to a privacy-first architecture compatible with cookieless tracking standards.

Beauty Solutions AS operates platforms like HairClub and MySalon, providing salon booking and product distribution solutions across Norway. André contributed to developing MySalon 2.0—a new white-label SaaS platform for salon management.

• Helped expand the beta version of the booking app, focusing on backend logic and frontend integrations.
• Integrated third-party white-label solutions into the Node.js–based backend.
• Built React.js components to manage service listings, appointment flows, and product displays.
• Contributed to planning and implementing scalable features to support rapid onboarding of salons in cities such as Oslo and Bergen.
• Assisted in preparing the system for integration with new retail distribution partners.

Turtle is a venture studio that supports early-stage startups in designing, developing, and launching digital products. André joined as a full-stack engineer, playing a key role in building multiple applications from scratch and assisting with technical hiring efforts.

• Bootstrapped several client products, leading full-stack development using JavaScript, Node.js, React.js, and Next.js.
• Worked closely with non-technical founders to define technical roadmaps and implement MVPs.
• Led hiring and onboarding of full-time engineering staff, establishing effective internal workflows.
• Built reusable backend architecture with Express.js, MongoDB, and Redis.
• Integrated third-party services, including Stripe, AWS, and WebSocket-based real-time features.
• Promoted Agile practices by facilitating sprint planning and retrospective meetings.
• Delivered reliable, maintainable code in fast-paced startup environments.

Booking.com is one of the world's largest digital travel platforms. André worked on the payments team, helping ensure seamless, secure transactions for millions of users.

• Developed and maintained essential payment processes, including integrations with PayPal and Stripe.
• Participated in extensive A/B testing to improve conversion rates.
• Wrote reliable, high-performance JavaScript and jQuery code for production features.