Growth Engineer - Data & Tracking

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 decisions start with reliable data. At Pennylane, we're building the financial operating system for European businesses. As we grow and expand into new markets, understanding how users discover, interact with and adopt our product is becoming increasingly important. That's where Growth Engineering comes in. We're looking for a Growth Engineer with strong data and tracking expertise to help us build reliable, scalable tracking and analytics foundations across our digital acquisition journeys. You'll join our Growth Engineering team and work closely with Thomas, our Growth Engineering Team Lead , within the Marketing Website squad. Your mission ? Make sure we collect the right data, trust what we measure and turn insights into better growth decisions.

What you'll do

Build reliable tracking foundations You'll own the technical implementation and reliability of tracking across our website and acquisition funnels. Design, implement and maintain tracking plans across key user journeys. Build and improve event tracking, user identification and data collection. Work with tools such as Segment, Amplitude and Google Tag Manager. Ensure tracking consistency, accuracy and reliability across our digital ecosystem. Identify and resolve tracking issues before they impact business decisions. Connect data across our growth ecosystem You'll help build the technical connections between our website, internal systems and analytics tools. Develop and maintain APIs and integrations between platforms. Ensure reliable data flows between our acquisition, product and analytics tools. Collaborate with Data teams to improve data quality and consistency. Support the evolution of our tracking architecture as Pennylane scales internationally. Power experimentation and conversion You'll work closely with Growth, Marketing and Data teams to understand user behavior and improve acquisition performance. Implement the technical foundations for A/B testing and experimentation. Help measure acquisition funnels and identify opportunities for improvement. Ensure experiments are properly tracked and measurable. Translate business questions into clear technical tracking requirements. Support data-driven decisions through reliable instrumentation. Contribute as an engineer This is an engineering role, not a reporting or dashboarding position. You'll be expected to bring strong technical fundamentals and take ownership of your work. Write clean, maintainable and well-tested code. Build scalable and reliable technical solutions. Investigate complex tracking and data issues. Improve existing systems, processes and documentation. Collaborate with engineers across Growth, Engineering and Data teams. Contribute to technical decisions and engineering best practices. Who are you? We're looking for an engineer who understands both how data is collected and why it matters. Someone who enjoys solving technical problems, working with different teams and making sure that business decisions are based on data people can trust. You don't need to be a data scientist or a marketing specialist. But you should be comfortable working at the intersection of software engineering, analytics and growth. We'd love to meet you if... You have a software engineering experience, with hands-on exposure to tracking, analytics or data integrations. You have implemented and maintained event tracking across websites, applications or acquisition funnels. 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're familiar with tools such as Segment, Amplitude, Google Tag Manager or similar platforms. You understand event schemas, data layers, user identification and tracking consistency. You're comfortable working with JavaScript and APIs to implement and troubleshoot tracking. You care about code quality, reliability and maintainability. You enjoy taking ownership of technical projects, from design to production. You're comfortable working in French and English. Bonus points if you have experience with: Ruby on Rails, Vue.js or Nuxt.js. SQL and data warehouses. Server-side tracking and conversion APIs. A/B testing and experimentation platforms. Attributi