Senior Fullstack Engineer - React,TypeScript*/Go (ideal)

We're looking for product-minded engineers to join our diverse and driven team. We really value collaboration, making an impact, and continuous learning. Our product development team is based in Berlin, but we have folks working all over Europe, and you'll work closely with an experienced and supportive team., We are looking for a Senior Fullstack Engineer with high Expertise in Typescript/react willing to do backend tasks to join a diverse, product-minded team that values collaboration, impact, and continuous learning. We are a remote-first team working across Europe, where engineers are expected to be comfortable navigating the entire stack (both Frontend and Backend).

In this role, you won't just be "flipping a switch" on the frontend; you will be architecting features from the database to the browser. You'll join an experienced and supportive team where you'll have a significant voice in shaping both our technical direction and the product itself., * Own the Full Lifecycle: Build, scale, and maintain modern web applications where the logic is split evenly between React/TypeScript and our Golang backend.

• Bridge the Gap: Design and implement clean APIs in Go while ensuring they are seamlessly integrated into a performant, accessible React frontend.
• Architect for Scale: Maintain high standards for code quality and performance across the entire stack, from frontend component libraries to backend microservices.
• Collaborate Broadly: Work closely with Product and Design to turn ambiguous requirements into polished features.
• Master the Ecosystem: Help evolve our infrastructure and lean into AI tools, understanding their strengths and limitations to accelerate our workflow., * Impact from Day One - Your ideas are valued, and you actively shape our direction. No long feedback loops or complex hierarchies - you'll have a direct impact on what you do.
• Trust - We believe in our mission and in our team, offering trust-based working hours, permanent contracts, flexibility for home-country working.
• Flexibility - We offer flexible working hour arrangements to ensure a healthy work-life balance.
• Team Spirit - Shared rituals connect us, whether online or offline. We have regular formats like all-hands meetings, demo sessions, quizzes, and offsites - perfect opportunities to spend time as a team.
• Personal Growth - Learn from experienced colleagues and leverage the latest technologies and methodologies to succeed in your role.

Do you have experience in TypeScript?, * Experience: at least 6+ years of professional software engineering experience in a production environment.

• Frontend Mastery: Deep expertise in React and TypeScript is essential. You should be fluent in the ecosystem (e.g., Redux Toolkit, Styled Components, Storybook) and testing frameworks (Jest, Cypress, or Playwright).
• Backend Proficiency: Strong experience building and maintaining APIs. While Golang is our primary language (and a huge plus if you know it), we are open to strong engineers willing to master it.
• System Ownership: A "DevOps" mindset, comfortable with CI/CD, automated testing, and version control.
• Communication: Fluent English and the ability to explain complex technical trade-offs to non-technical stakeholders.

topi is a Berlin-based fintech enabling businesses to access IT hardware through flexible subscription and rental models instead of upfront purchases. Our API-first platform allows retailers, manufacturers, and partners to offer hardware subscriptions seamlessly at the point of sale. Following our acquisition by PEAC Solutions - owned by HPS / Blackrock, a global asset finance and leasing platform, topi combines fintech speed with strong financial backing and international scale. We operate across multiple European markets and focus on delivering fast, automated, and risk-aware financing solutions for SMBs. Our mission is to make business hardware more accessible, flexible, and sustainable - supporting better cash-flow management and modern device lifecycles.