Senior/Staff Fullstack Engineer, Backend Leaning

A partner company is looking for a Senior/Staff Fullstack Engineer with backend leaning to build and scale innovative AI-powered SaaS products. The role combines deep backend expertise with fullstack capabilities, involving ownership over complex projects from concept through delivery, in a high-performing engineering environment.

• Own end-to-end delivery of complex product initiatives, from initial discovery and design through implementation, testing, and safe production releases.
• Develop and maintain backend systems while contributing across the stack, including client applications and customer-facing product experiences.
• Design, build, and scale reliable SaaS features using modern engineering practices and a strong focus on quality.
• Work closely with Product Managers and cross-functional stakeholders to understand business challenges and translate them into effective technical solutions.
• Break down large, ambiguous projects into iterative deliverables that can be validated, measured, and improved over time.
• Use data and product insights to evaluate feature performance, understand business impact, and make informed decisions.
• Contribute to technical strategy by identifying future engineering challenges and building capabilities to support long-term product evolution.
• Drive architectural decisions, improve engineering processes, and promote high standards for code quality and system reliability.
• Mentor and support other engineers while contributing to a collaborative, high-performance engineering culture.
• Help develop products involving advanced technologies such as AI-powered workflows, video generation, experimentation platforms, billing systems, and real-time collaboration.

• 7+ years of professional software engineering experience, including at least 3 years at senior or technical leadership level.
• Proven experience working in high-performing engineering teams operating at scale, whether in a fast-growing company or an established engineering organization.
• Strong backend engineering expertise with the ability and willingness to contribute across the full stack.
• Experience building and maintaining enterprise-grade SaaS products with complex technical requirements.
• Strong understanding of software architecture, system design, scalability, and production engineering practices.
• Experience delivering customer-facing features and collaborating closely with product teams to solve commercial problems.
• Strong product mindset with the ability to connect technical decisions to customer and business outcomes.
• Experience working with AI-powered products, developer platforms, video systems, experimentation tools, billing platforms, or real-time collaboration systems is highly valued.
• Previous experience leading or mentoring smaller engineering teams is a plus.
• Strong communication skills and the ability to collaborate effectively in a remote, international environment.

• Competitive compensation package starting at approximately €130,000 / £130,000 / CHF 130,000 base salary plus RSUs, depending on location and experience.
• Full-time employment opportunity with support for remote work arrangements in eligible European locations.
• Fully remote-friendly environment with the possibility of working from supported offices.
• 25 days of annual leave plus local public holidays.
• Opportunity to work on cutting-edge AI technology with significant global impact.
• Ownership of meaningful technical projects used by thousands of businesses worldwide.
• Collaborative culture focused on autonomy, innovation, and high-quality execution.
• Opportunity to work alongside experienced engineers and contribute to the future of AI-powered communication.
• Professional growth through technical leadership, product ownership, and exposure to complex engineering challenges.