Senior Backend Software Engineer - Core Domain

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 our Senior Backend Software Engineer, you'll be the person who plays a critical role in engineering the backbone of our payment platform, ensuring high-performant and scalable core systems. Here's what your day-to-day will look like: Engineer core platform domains : Design and evolve our most sensitive systems—such as the Transaction Ledger, Identity & Access Management (IAM), or Payment Orchestration—ensuring they remain functional for product teams. Scale risk & financial engines : Optimize and implement services dedicated to bank integrations, credit risk, and real-time fraud detection to protect our "source of truth." Cross-team technical leadership : Drive technical analysis for projects that span across multiple services and produce high-quality documentation (Smart Papers) for stakeholders. Foster engineering excellence : Ensure technical quality through rigorous testing strategies and safe rollouts, promoting a culture of simplicity and maintainability. Mentor & develop : Provide technical guidance to junior and mid-level engineers, helping the team adopt the best tools to accelerate development cycles. 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? Extensive experience : You have at least 5 years of related experience in back-end software engineering, with a track record in microservices and cloud environments (AWS preferred). Technical depth : You possess deep experience with Java and Spring Boot, alongside a strong understanding of distributed systems. Structured communication : You excel at communicating complex technical concepts clearly and coordinating implementations across different teams. Impact mindset : You focus on delivering software that meets evolving user needs, avoiding analysis paralysis to optimize systems beyond initial requirements. Language proficiency : You are passionate about FinTech and fluent in English. 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. 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