Senior Data Software Engineer

Our mission ? Creating the freedom for SMEs to succeed in business and beyond, by delivering Europe’s leading finance workspace. We combine business-class tools (seamless invoicing, spend management, and pre-accounting) with unwaveringly attentive 24/7 support, designed to help businesses breeze through all things finance. Our journey: Founded by Alexandre  and  Steve in July 2017, Qonto has rapidly gained trust, serving over 600,000 customers. Thanks to our wonderful team of 1,600+ Qontoers, we also made it to the LinkedIn Top Companies French ranking! Our values: Customer focus | Prioritize customers in everything you do Ownership | Own your part, get things done Teamwork | Make (team)work easy Mastery | Continuously raise the bar Integrity | Always do what’s right, and respect people Our beliefs: At Qonto, we're committed to fostering a welcoming environment where everyone can thrive. We prioritize evaluating applicants based solely on skills and potential, ensuring diversity with 55% international team members, 44% women, and 20% parents. Join us in building a workplace that celebrates diversity and individuality. Discover the steps we took to create a discrimination-free hiring process . At Qonto, we're reimagining financial management for SMEs and freelancers across Europe. As a Senior   Data Software Engineer , you’ll shape the foundations that power our machine learning systems, helping us build smarter, faster, and more reliable financial tools. 👩‍💻🧑‍💻 As a Senior Data Software Engineer, you will: • Build and maintain through real-time and batch , end-to-end data pipelines for ML model training and inference in a production and fast-paced environment. • Design and optimize data storage and access patterns for scale and performance • Deploy and manage model-serving systems for seamless production integration • Partner with ML Engineers to ensure data quality, scalability, and monitoring 🤔 What you can expect: • You'll be joining a dynamic team of 1 Data Engineer and 5 ML Engineers where your work directly enables machine learning solutions that simplify accounting processes for SMEs and freelancers across Europe • At Qonto, we use lean methodology with a focus on continuous delivery, allowing rapid iteration and feedback on data infrastructure improvements • Work in pair with Machine Learning Engineer, and put into production models tailored to customer needs. 👨‍💻 What You’ll Work With: • Python, software engineer, and system design principles to build clean, reliable, and scalable services and pipelines • SQL to store data, and query data efficiently • Stream Processing (Kafka, or similar) to process events in real-time. • Orchestration & Data tools (Airflow, DBT, Snowflake) • Collaborate across ML, backend, and product teams 🤝 About your future manager: Marianne is deeply involved with the development team, providing swift problem-solving support and encouraging proactive discussions on technical decisions. With a focus on removing blockers and fostering innovation, she empowers team members to take ownership of their projects and grow professionally within the company. 🧠 About you • Minimum 3 years of experience in data engineering, ideally applied to ML use cases • Strong Python and software engineering skills (microservices, CI/CD, testing) • Strong knowledge of batch and real-time pipeline design. • Proficiency in SQL and data modeling for performance • A team player who bridges technical and product discussions • [Bonus] Good understanding of ML workflows and data lifecycle At Qonto, we understand that true diversity isn't just about ticking boxes on a hiring checklist. Apply regardless of the boxes you tick! Who knows? You may have the missing piece of the puzzle we've been searching for all along. 🎁 Perks A tailor-made and dynamic career track. An inclusive work environment. And so much more to help you succeed. - Offices in Paris, Berlin, Milan, Barcelona, and Belgrade; - Competitive salary package; - A meal voucher; - Public transportation reimbursement (part or global); - A great health insurance (depending on the country); - Employee well-being initiatives: access to Moka Care  to take care of your mental health and great offers for sports and wellness activities; - A progressive disability and parenthood policy (1 in 6 of Qonto employees is a parent!) and childcare benefits with selected partners; - Monthly team events. 💬 Our hiring process: - Interviews with your Talent Acquisition Manager and future managers - A remote exercise to demonstrate your skills and give you a taste of what working at Qonto could be like Find more information about our interview process on our  careers website . On average, our process lasts 20 working days and offers usually follow within 48 hours 🤞 To learn more about us: Qonto's Blog  |  Les Échos I L'Usine Digitale |  Courrier Cadres To know how your personal data will be processed during your application process or to request its deletion, please  click here . Apply for this job