Frontend Developer (m/f/d)

Welcome to Purpose Green

We are a fast-growing company specializing in energy-efficient renovation and sustainable real estate solutions. Our dynamic team of experts develops innovative residential and commercial projects to the highest ecological standards. We are passionate about reducing CO₂ emissions and developing future-oriented strategies to create sustainable living spaces. At the same time, we ensure that our clients' properties are sustainable, economically viable, and value-enhancing. We provide end-to-end solutions for energy-efficient upgrades, green subsidies and financing, as well as comprehensive ESG management.

Your Skills and Qualifications

While tech isn’t everything, we are looking for someone who brings strong frontend skills and a collaborative mindset to the table:

• Experience with React — including Hooks and advanced state management.
• Proficiency in TypeScript and modern JavaScript (ES6+).
• Familiarity with modern rendering strategies like SSR, SSG, and CSR.
• Comfortable with data fetching tools like Axios and React Query, form management with React Hook Form, and styling using Tailwind CSS.
• Familiarity with CI/CD pipelines and automation tools like GitHub Actions or equivalents.
• Fluency in English

• Experience with performance optimization and modern testing tools (e.g., Playwright, Vitest).
• Understanding of core concepts like closures, prototypes, and async programming.
• Experience in applying these concepts effectively using frameworks like Next.js.
• Experience in implementing localization and internationalization strategies.
• Proficiency in Figma and committed to maintaining a shared Storybook design system.

Why Purpose Green

• Become part of one of the fastest-growing ClimateTech startups in Europe.
• Backed by leading US and EU investors, we are shaping the future of sustainable construction and the real estate industry.
• Modern HQ in West Berlin – well located with excellent transport links.
• Flexible working hours (core hours 9:30 AM to 4:00 PM) and up to five home office days per month.
• 26 vacation days plus an additional day per year, as well as free days on December 24th and 31st.
• We reward referrals for our open positions with a generous referral program.
• After the probation period: up to five days of training leave per year with a budget of 1,500 Euros.
• BVG ticket for public transportation.
• Membership in the Urban Sports Club.
• Co-create rather than just work – drive the decarbonization with us.

Your Responsibilities

As a Senior Frontend Engineer, you’ll help shape how users interact with our platform to make buildings more energy efficient. Here’s what your day-to-day might look like:

• Collaborate with Product Owners and Designers to transform user needs into elegant, performant interfaces.
• Build, test, and maintain modern frontend components using React, TypeScript, and Storybook — with a strong focus on reusability, accessibility, and performance.
• Take part in product discovery and design iterations by giving feedback early, challenging assumptions, and proposing improvements.
• Pair-program and mentor other engineers, fostering a culture of learning, feedback, and high standards.
• Write meaningful, testable code following clean code principles, and participate in thoughtful code reviews.
• Continuously deliver small, incremental changes to production, and enhance features through rapid feedback cycles.
• Improve frontend performance and maintainability, proactively identifying technical debt and refactoring when needed.