Growth Engineer (Fullstack, Frontend-Focused)

Are you looking to have an impact on the daily life of millions of entrepreneurs in France (and tomorrow in Europe)? Are you looking for a work environment that values trust, proactivity, and autonomy? Are our Engineering principles aligned with your vision? Then Pennylane is the right place for you ! Our vision We aim to become the most beloved financial Operating System of French SMEs and Accounting Firms (and soon, European ones). We help entrepreneurs rid themselves of time-consuming tasks related to accounting and finance while providing them with access to key financial information to assist in making the best decisions for their business.

About us

Pennylane is one of the fastest growing Fintechs in France (and soon to be in Europe!) In 5 years of existence, we’ve managed to : 💻 Make ourselves known as a groundbreaking accounting and financial software for small businesses and their accountants 💰 Raise a total of €400 millions, including from Sequoia, the famous fund from the Silicon Valley who invested early in companies like Google, Facebook, Airbnb, Stripe, Paypal and much more... 👨‍👩‍👧‍👦 Grow from 7 cofounders to 1000 happy Pennylaners : we’re now recognized as one of the greatest places to work in France (and also remotely), with a 4.6/5 rating on Glassdoor . 🌍 Build an international environment with more than 25 nationalities, with a strong remote-friendly culture, where 30% of the employees are already working from all parts of Europe 🤝 Earn the trust of thousands of customers and accounting firms and obtain outstanding ratings 🚀 Already more than 900,000 small and medium-sized enterprises (SMEs) and over 6000 accounting firms use Pennylane in France! Your impact Great growth experiences are built by great engineers. At Pennylane, Growth Engineering is about more than building landing pages or running experiments. It's about creating fast, reliable and seamless digital experiences that help entrepreneurs discover Pennylane and get started. As we expand across Europe, our website and acquisition journeys need to become more scalable, more flexible and more effective. We're looking for a Growth Engineer with strong frontend expertise to help us build the next generation of Pennylane's digital experiences. You'll join our Growth Engineering team and work closely with Thomas, our Growth Engineering Team Lead , within the Marketing Website squad. Your work will have a direct impact on how users discover, experience and adopt Pennylane.

What you'll do

Build great web experiences You'll develop and improve our public website and acquisition journeys, with a strong focus on frontend engineering. Build modern, responsive and high-performing interfaces using Vue.js and Nuxt.js. Develop and maintain fullstack features using Ruby on Rails. Improve website performance, accessibility and user experience. Build reusable components and scalable frontend solutions. Drive growth through engineering You'll work closely with Growth, Marketing and Data teams to turn business opportunities into technical solutions. Build and improve acquisition and registration funnels. Design and implement A/B tests and new user experiences. Improve conversion through technical experimentation. Develop features that support our international expansion, including localization and multilingual experiences. Connect systems and data You'll contribute to the technical foundations that power our growth initiatives. Build and maintain APIs and integrations between internal and external tools. Ensure reliable data flows across our digital ecosystem. Contribute to tracking implementations and data quality improvements. Work with Data teams to better understand user journeys and experiment results. Improve how we build You'll help us move fast without compromising engineering quality. Write clean, maintainable and well-tested code. Identify opportunities to simplify and automate workflows. Use AI-powered development tools when they bring real value. Take ownership of your projects, from technical design to production. Share knowledge and contribute to engineering best practices. Who are you? We're looking for an engineer who enjoys building products, solving technical challenges and seeing the impact of their work. Someone who combines strong engineering fundamentals with curiosity about user experience, experimentation and business impact. You don't need to be a marketing expert. But you should enjoy understanding why you're building something, not just how to build it. We'd love to meet you if... You have experience in software engineering, with strong frontend development skills. You're comfortable building modern web applications with Vue.js and/or Nuxt.js , or have strong experience with comparable frameworks and are ready to work with our stack. You're fluent in AI-assisted development : you work with coding agents, create custom skills and instructions, use worktrees to parallelize work and keep code quality high. You have fullstack experience and can contribute to backend development. Experience with Ruby on Rails is a strong plus. You enjoy taking ownership of technical projects from idea to production. You're comfortable collaborating with Engineering, Product, Growth, Marketing and Data teams. You're curious about experimentation, conversion optimization and how users interact with digital products. You're comfortable working in French and English. Bonus points if you have experience with: Web analytics and tracking tools such as Segment, Amplitude or Google Tag Manager. A/B testing and experimentation platforms. SEO, web performance or conversion optimization. API integrations and marketing automation. AI-assisted development workflows. Our tech stack Frontend: Vue.js, Nuxt.js, JavaScript Backend: Ruby on Rails Database: PostgreSQL Development: Git, GitHub You'll also have opportunities to work with analytics, tracking and experimentation tools depending on the projects. Why you'll love this role Real