Senior Software Engineer (f/m/x)

What if the impact of your role extended beyond a job title?

Not through marketing spin. Not through vague "purpose-driven" messaging. But through software that helps industrial companies understand, manage and actively reduce their environmental impact.

That's what Tanso is building. And it's one of the reasons people join us.

• Take Action in a Fast-Moving, High-Impact Environment. We move fast on sustainability because the urgency is real. That means decisions that matter, transparent processes, and the agility to navigate change.
• Challenge & Grow Through Ownership. Take ownership immediately, build expertise through hands-on experience, and leverage every available resource to achieve outsized impact.
• Foster Trust with Mission-Driven Collaborators. You'll join a team that prioritizes impact and each other. We give honest feedback, share credit, support each other when it matters, and hold high standards together.
• Embrace Responsibility & Drive Impact. Turn fragmented emissions data into actionable insights. Your work has immediate, visible impact - clearer decision-making and genuine momentum toward change.
• AI First-Mindset. We embrace cutting-edge technology to solve sustainability challenges. Push the boundaries of innovation and stay ahead of what's possible.
• Commitment to Performance & Excellence. We cultivate a high-performance culture where you thrive. Push yourself and others to excel, celebrate wins, learn from setbacks, and raise the bar.

To combine strong product judgment with deep technical ownership, we are looking for a Senior Software Engineer (f/m/x).

As a Senior Software Engineer, you will own complex features and technical initiatives end-to-end, from understanding the underlying problem and challenging assumptions to designing the solution, shipping it, and improving it in production. Alongside your work within a product module, you will help solve technical problems that have broader consequences for the platform and the engineers building on it.

At Tanso, senior engineers remain hands-on product builders. The main difference at senior level is not simply owning “bigger features.” It is your ability to go deeper technically, navigate more complex problem spaces, make high-quality architectural decisions, and raise the effectiveness of the engineering organization around you.

• Own technically complex product initiatives from problem definition through architecture, implementation, rollout, and iteration.
• Identify unnecessary complexity, challenge assumptions, and help the team focus on solutions that create meaningful customer value.
• Contribute to cross-cutting platform improvements that make the product more reliable, maintainable, and easier to evolve.
• Raise the technical quality bar through thoughtful design, code reviews, technical guidance, and hands-on collaboration with other engineers.
• Work closely with product design, customer success, and other engineers to turn ambiguous problems into effective product solutions.

• 5+ years of hands-on TypeScript experience in high velocity SaaS environments.
• Strong full-stack and product thinking, understanding systems end-to-end.
• Experience with backend development, ideally with PostgreSQL and Azure.
• Clear, precise communicator in English.
• Self-driven problem solver with strong ownership and execution mindset.

Nice to have

• German language skills.

• A highly competitive compensation package with an attractive equity package to participate in Tanso's growth.
• Hybrid working model that combines the benefits of onsite collaboration with the flexibility needed.
• A company-contributed pension plan to support long-term financial security.
• Yearly budget to support ongoing professional development.
• Sponsored access to EGYM Wellpass to prioritize your wellbeing with thousands of options.
• Exclusive discounts that help you save on a wide range of everyday brands, services, and experiences.

We're a diverse group of people, and that diversity is what makes us great. We bring unique perspectives to everything we do and are always eager to learn from each other. We work in cross-functional teams to tackle ambitious challenges, actively seek feedback and be the best versions of ourselves.