Frontend Software Engineer III - L.68/99

Satispay

Frontend Software Engineer III About us Satispay began by rethinking the simple act of a payment to remove the friction from our daily routines. But we didn’t stop there. Today, we are building a complete financial platform designed to empower people and concretely improve their lives. By giving our 6 million users a clear, open path to pay, save, and invest, we are evolving into the definitive destination for every financial need. What you’ll be doing As a Frontend Software Engineer, you’ll play a key role in contributing to the development of a next-generation, highly scalable, and performant core frontend platform. Here’s what your day-to-day will look like: * Collaborate on feature development – Working closely with the team to implement new features, participating in code reviews, and contributing to knowledge-sharing sessions. * Enforce coding standards – Ensuring adherence to design patterns and best practices for frontend development. * Contribute to the technical vision – Supporting the foundations for a scalable, maintainable, and high-performance UI platform. * Evaluate and select technologies – Researching and choosing modern frontend technologies, frameworks, and tools. * Design scalable systems – Creating systems that support scalability and modularity to handle evolving business requirements. Our frontend stack is built around TypeScript and React, with state management handled via TanStack Query, Zustand, and Jotai. We use Tailwind CSS and headless libraries like Radix UI or Base UI to power a modular, accessible design system shared across teams. Validation and functional programming are supported through Zod, fp-ts, and effect. We also use GraphQL, Next.js and TanStack Start in selected projects, utilizing PostgreSQL for data persistence alongside AWS services like Lambda, S3, SNS, and SQS for serverless and asynchronous architectures. Our testing strategy includes Vitest, React Testing Library, and Playwright for E2E testing. Everything runs on AWS, with CI/CD pipelines managed via CodeBuild, CodePipeline, and GitHub Actions. Monitoring and observability are handled with Sentry and Kibana. Expect challenges, collaboration, and the freedom to bring your ideas to life. Things change quickly here, so be ready to adapt, take initiative, and shape your role as we grow. Who we’re looking for We need a problem-solver who loves teamwork and gets things done. If you're curious and ready for real ownership, you'll fit in! Does this sound like you? * Relevant experience – 3-5 years in front-end development, with a track record of delivering high-quality web applications. * Expertise in JavaScript frameworks – Proficient in JavaScript, TypeScript, React, and state management libraries like Tanstack Query * Experience with design systems – Skilled in using component libraries (e.g., Storybook, Headless UI, Tailwind CSS) and collaborating on UI/UX discussions * Strong understanding of build systems and APIs – Experienced with modern front-end build systems (Vite, Rollup, Nx/Turborepo) and deep knowledge of RESTful APIs, GraphQL, and WebSockets * Strong ownership of features – Experience maintaining Node.js applications in production, including using observability/logging tools (e.g., Grafana, Cloudwatch, Logstash) and maintaining unit, integration, and E2E tests. * Performance Optimization – Implementing techniques like lazy loading, code splitting, and caching to ensure optimal application performance. Don't worry if you don't tick every box. We believe in the power of different viewpoints and strengths. Your unique perspective is important as we build something special. If you're passionate and can make a difference, we truly encourage you to apply. CareAbout: how we support your impact We move fast, and evolution never stops. It’s a fun ride, but it can be challenging. To make sure our people truly thrive, we’re committed to making their lives easier, both in the office and out in the world. That’s why we created CareAbout: * ❤️ Health (Private insurance for you and your family, psychological support with Serenis, mental health workshops) * 💰 Financial resources (Stock Option Plan, Meal vouchers, Relocation support if you’re moving countries) * ⚙️ Growth and development (Professional development programs, Internal mobility, Language courses with Preply) * 🌱 Flexibility (Unlimited PTO, Hybrid working policy*, Flexible working hours) * 👨‍👩‍👧 Family (Enhanced parental leave, Additional leave for child sickness) *We embrace three days per week in-office (Tuesday and Thursday + 1 of your choice), with the option to request extra remote time. Salary: €45,000 - €53,000 gross per annum This range is set using objective, gender-neutral criteria for the role's core requirements. However, we do not believe in putting a ceiling on talent. The final compensation package is tailored according to your unique experience and expertise. If your skills go beyond the standard profile, apply anyway so we can discuss a package that reflects your true value. Equal opportunity employer At Satispay, we're proud to be an equal opportunity employer. We celebrate diversity and inclusion, welcoming individuals of all backgrounds. This opportunity is open to everyone, regardless - for instance - of race, colour, religion, sex, gender identity, sexual orientation, and national origin. Join us in a workplace where everyone belongs! Learn more about us Our values and pillars aren’t just fancy words on a page - they really shape everything we do. Explore them here. #LI-VR1 #LI-Hybrid By submitting this application, I acknowledge that I have read and understood the content of the Privacy Policy

Qonto

Our mission and customers: We are creating the freedom for SMEs to succeed by delivering Europe's leading finance workspace with banking at its core, augmented by financial tools. We are proud to be rated 4.8 on Trustpilot, based on 55,000+ reviews. Our culture puts customer satisfaction at the core of what we do, as proven by our Net Promoter Score of 75 (more about our culture here). Our journey: Founded in 2017 by Alexandre and Steve, Qonto has grown to 1,600+ Qontoers serving over 600,000+ customers across 8 European countries. We have been profitable since 2023, and we are just getting started. Our beliefs: We hire for skills and potential. With 80+ nationalities, 45% women, of which 56% of women in our leadership team, diversity isn't a program; It's who we are. We've built a discrimination-free hiring process because the best teams are built on merit. AI at Qonto: AI is deeply embedded in how we work (here) - Every Qontoer gets unlimited access to the best AI tools. We want people who experiment without waiting for permission, push AI beyond the obvious, know when to trust it, and when to question it. ------------------------------------------------------------------------------------------------------ 🌏 Location: You can choose to work in Qonto as long as you're living in (or willing to relocate to) either Germany, France, Italy, Serbia, or Spain. Mission: Join us as a Backend Engineer to build the financial infrastructure that 600,000+ European SMEs depend on every day, from highly scalable APIs to robust banking services that handle real money, in real time, with zero room for mistakes.   ➡️ As a Backend Engineer at Qonto, you will Design, build, deploy, and maintain services handling real financial transactions, owning reliability in production, not just at merge time Co-own service architecture, resilience, and scalability with respect to Domain-Driven Design principles Grow in technical leadership: lead design discussions, anticipate risks, and mentor less experienced engineers Drive continuous improvement, from fixing flaky CI to running post-mortems and propagating learnings across the team Our primary languages are Go and Ruby. Our platform runs on a Kubernetes cluster hosted on AWS, with PostgreSQL as our database of choice. We're also using Kafka for event-driven architecture and ELK for logging and auditing, among many other tools and services.   ➡️  What you can expect: our methodology, the Qonto Way We value upfront technical design, team reviews, and smart slicing, quality drives the velocity our customers need Our org assigns one team lead per project across stacks, giving your team a clear mission and full autonomy on how it operates Our lean toolbox, Kaizen, PDCA, lets you monitor and drive continuous improvement collaboratively with your peers and manager Each engineer gets access to Cursor or Copilot, and we want people who use AI to raise the bar, not just to go faster   ➡️  Your future team As a Backend Engineer, you will join one of Qonto's squad teams, each organised around a clear project mission, with one team lead and full ownership of a product scope. You'll be part of a 190-strong backend engineering community within a 500- Product Engineering department, working in squad teams of 5 to 10 people alongside Product, Design, and peers from Frontend and Mobile.   ➡️ About You Technical expertise: Strong backend engineering experience with exposure to large-scale web application architecture and real production constraints Stack fluency: You don't need to know our exact stack, but you transfer fast and are comfortable with similar technologies Quality-driven: You write tests, set up monitoring, handle incidents methodically, and do root cause analysis Ownership mindset: You track impact after release, flag regressions, and improve what's in your scope without being asked Team player: Comfortable working in squad teams with PMs, Designers, and other stacks; fluent in English

Satispay

About us Satispay began by rethinking the simple act of a payment to remove the friction from our daily routines. But we didn’t stop there. Today, we are building a complete financial platform designed to empower people and concretely improve their lives. By giving our 6 million users a clear, open path to pay, save, and invest, we are evolving into the definitive destination for every financial need. What you’ll be doing As an AI Growth Engineer in our Growth Intelligence team, you'll sit at the intersection of growth, AI, and engineering, building the infrastructure that helps Satispay grow faster across B2B and B2C. Here's what that looks like in practice:   * Build and own growth tooling. Develop internal tools that give the Growth, Marketing and Sales teams real leverage: lead enrichment pipelines, outbound automation, competition monitoring, CRM features and integrations, and anything that makes the teams 10× more effective without adding headcount. * Automate content and web publishing. Build systems to generate, test, and deploy landing pages, campaign pages, and microsites at scale, removing the bottleneck between a marketing idea and something live. * Incubate new tech products. You take a growth idea (a referral loop, a new retention mechanic, a bet nobody else is taking) all the way from hypothesis to something real users rely on, acting as a one-person product team -> owning problem definition, build, experiment, and iteration until it's ready to graduate to product. * Lead AI adoption across growth teams. Be the person who brings real AI leverage to Marketing, Sales, and Growth. Evaluate tools, build custom agents, prototype workflows (n8n, Zapier AI, Clay), and turn manual processes into automated pipelines. You won't just use AI tools - you'll help your teammates use them well. * Own the experimentation infrastructure: Build and maintain the A/B testing framework, feature flags, and analytics pipelines that make it possible to run more experiments, faster, and trust the results.   Who we're looking for We need a problem-solver who loves teamwork and gets things done. If you're curious and ready for real ownership, you'll fit in! Does this sound like you? * You have an AI-native working style. You use AI tools daily and know how to get real leverage out of them. You've built with LLMs (OpenAI, Claude, etc.), know when to use agents vs. simple automations, and you're opinionated about what works and what's hype. * You have full-stack engineering ability. You're comfortable building end-to-end: frontend (React/Next.js/TypeScript), backend APIs, data pipelines, and integrations. You don't need a ticket to ship something small - you just do it. * You have marketing and business intuition. You understand acquisition funnels, conversion metrics, CRM logic, and campaign mechanics. You don't need a marketer to explain why something matters - you already care about the outcome, not just the code. * You think automation-first. Your default question when you see a manual process is "how would I automate this?" You're fluent with workflow tools (n8n, Zapier, Make) and know when to build custom vs. integrate. * You're data fluent. You're comfortable with SQL, can set up event tracking, and design an experiment that will actually produce reliable results. * You take ownership and move fast. You prototype quickly, ship iteratively, and don't wait for perfect specs. You treat the growth team's problems as your problems. And when you don't know something, you go learn it. CareAbout: how we support your impact We move fast, and evolution never stops. It’s a fun ride, but it can be challenging. To make sure our people truly thrive, we’re committed to making their lives easier, both in the office and out in the world. That’s why we created CareAbout: * ❤️ Health (Private insurance for you and your family, psychological support with Serenis, mental health workshops) * 💰 Financial resources (Stock Option Plan, Meal vouchers, Relocation support if you’re moving countries) * ⚙️ Growth and development (Professional development programs, Internal mobility, Language courses with Preply) * 🌱 Flexibility (Unlimited PTO, Hybrid working policy*, Flexible working hours) * 👨‍👩‍👧 Family (Enhanced parental leave, Additional leave for child sickness) *We embrace three days per week in-office (Tuesday and Thursday + 1 of your choice), with the option to request extra remote time. Salary: €35,000 - €47,000 gross per annum This range is set using objective, gender-neutral criteria for the role's core requirements. However, we do not believe in putting a ceiling on talent. The final compensation package is tailored according to your unique experience and expertise. If your skills go beyond the standard profile, apply anyway so we can discuss a package that reflects your true value. Equal opportunity employer At Satispay, we're proud to be an equal opportunity employer. We celebrate diversity and inclusion, welcoming individuals of all backgrounds. This opportunity is open to everyone, regardless - for instance - of race, colour, religion, sex, gender identity, sexual orientation, and national origin. Join us in a workplace where everyone belongs! Learn more about us Our values and pillars aren't just fancy words on a page - they really shape everything we do. Explore them here. #LI-VR1 #LI-Hybrid By submitting this application, I acknowledge that I have read and understood the content of the Privacy Policy