Fullstack Software Engineer – RoR/JS

• Join the Growth Team and collaborate with the growth engineering team lead within the Marketing website squad
• Build and refine infrastructure supporting internationalization, including multilingual and localized user journeys
• Design and deploy AI-driven tools and automated workflows for lead acquisition and personalized user experiences
• Implement and enhance visitor tracking systems to convert raw data into actionable growth insights
• Design and develop APIs connecting internal tools with the broader fintech ecosystem
• Launch A/B tests, white-label integrations, predictive lead scoring, and optimized acquisition funnels
• Maintain and optimize the public website and registration funnels for conversion across markets

• At least 2+ years of professional experience as a Software Engineer
• Mastery of Ruby on Rails
• Proficiency in a JavaScript framework; Vue/Nuxt is a major plus
• Ability to leverage AI tools such as LLMs and Copilots
• Experience with automation
• Fluent in French and English (B2/C1)
• German is a bonus
• Knowledge of Rails/JavaScript, Vue.js, Nuxt.js, PostgreSQL, Git, and GitHub
• Ideally, knowledge of data-tool integrations such as GTM and Segment
• Ideally, familiarity with data visualization tools such as Data Studio and Looker
• Familiarity with digital marketing, including paid acquisition, conversion, and SEO
• Ability to prioritize business-led actions
• Candidates must be based in Europe; Pennylane cannot provide visa sponsorship or hire outside Europe

• 25 vacation days paid by Pennylane
• Competitive compensation package
• Company shares
• Home workspace budget
• Monthly coworking space allowance
• Access to 8000 fitness spaces in Europe and more than 300 wellness activities through Gymlib
• Busuu access for improving English or French
• Latest Apple equipment
• Remote work from country of residence in Europe within a maximum two-hour time difference from CET
• Company events, including quarterly Tech Days and annual company seminar
• For France-based employees: French contract under French regulation
• For France-based employees: 6 to 12 RTT
• For France-based employees: 5 weeks PTO
• For France-based employees: lunch credits through Swile
• For France-based employees: Alan Blue healthcare cover
• For France-based employees: regular events in Lyon, Bordeaux, and Nantes