Senior Data Engineer (Lead) (w/m/d)

We are Billie, the leading provider of Buy Now, Pay Later (BNPL) payment methods for businesses, offering B2B companies innovative digital payment services and modern checkout solutions. We are to create a new standard for business payments and have made it our mission to simplify the purchasing experience for all businesses making it a tool for growth. Our solutions are based on proprietary, machine-learning-supported risk models, fully digitized processes and a highly scalable tech platform. This makes us a deep-tech company building financial products, not the other way around. We love building simple and elegant solutions and we strive for automation and scalability.

About the Role

Billie is seeking a seasoned and versatile Senior Data Engineer to provide technical leadership within our data platform team. This pivotal role will shape the future of data engineering at Billie, impacting critical systems like our ML-powered risk assessment engines and the entire data ecosystem fueling our growth. You'll tackle complex challenges across both real-time streaming and batch processing domains.

As a senior team member, you'll contribute hands-on while guiding architectural decisions, mentoring other engineers, and championing best practices across the organisation.

Your Responsibilities

• Lead the design, implementation, and operation of complex data solutions using technologies like Kafka/Flink for streaming and various batch processing systems
• Architect and evolve Billie's overall data platform, ensuring scalability, reliability, and cost-effectiveness
• Drive technical direction and establish best practices within the data engineering team
• Mentor junior and mid-level engineers, fostering a culture of technical excellence
• Collaborate with stakeholders to translate business requirements into robust data architectures
• Evaluate and recommend new technologies to keep our data platform modern and efficient
• Champion high standards for system reliability, monitoring, testing, and alerting
• Ensure adherence to data privacy regulations and security protocols
• Participate actively in architectural reviews and technical discussions

Who We're Looking For

• Extensive experience (typically 5+ years) as a Data Engineer or Software Engineer focused on data-intensive systems
• Proven track record designing and operating large-scale data processing systems, with significant experience in both streaming technologies and batch processing frameworks
• Strong software engineering fundamentals and proficiency in at least one primary language (Python, Kotlin, Java, Scala)
• Demonstrated ability to design scalable data architectures in a cloud environment (AWS or GCP preferred)
• Experience leading technical projects and making critical design decisions
• Excellent problem-solving skills for analyzing complex requirements
• Experience with Infrastructure as Code (Terraform) and CI/CD pipelines
• Experience or strong interest in mentoring other engineers

Bonus Skills (Nice to Have)

• Deep expertise with Apache Flink for complex stream processing
• Advanced knowledge of cloud data warehouses and data lakes
• Experience managing large-scale cloud deployments
• Experience productionizing machine learning models and collaborating with Data Scientists
• Expertise with modern data orchestration tools and transformation frameworks
• Experience with data modeling, data governance, and data quality frameworks

What we offer:

• Challenging and impactful work that drives personal and professional growth
• One of the best Virtual Shares Incentive Programs in the market, so that everyone at Billie is invested in our success
• Flexible work hours and trust in your ability to deliver, empowering you to take control of your work-life balance
• A hybrid working approach that allows you to work from home for up to 3 days per week
• Enjoy 30 days vacation per year on top of paid public holidays, sabbatical opportunities, and extra child sickness leave for parents
• Our "Catch a Ride with Billie” program that enables discounted access to Berlin Public Transport (BVG), Deutschland-Ticket, OR JobRad
• A yearly development budget to broaden your skill set and horizons
• Free German group classes
• An English-speaking, multicultural team with more than 40 nationalities represented
• Building meaningful connections with your colleagues through company and team events, interest groups, game nights, and more, powered by our Formula Fun Team!

Billie offers you the opportunity to be a part of one of the fastest-growing Fintech startups in Europe following the mission to innovate to create new freedom for businesses of all sizes. Our combined decades of experience in B2B Financing and Payments in a market thirsty for innovation and change make this a fantastic possibility to get into the most dynamic space in tech.

Join an international team of talented, passionate people where drive and merit matter. We work in nimble, cross-functional teams with open communication lines across the company. You’ll be surrounded by smart people from a wide variety of backgrounds from which you can learn and that want to learn from you.

Are you ready to join Billie?

Billie is proud to be an equal-opportunity employer. We celebrate diversity and are committed to creating an inclusive environment in our workplace. By embracing talents and abilities of all kinds, we aim to boost motivation and team creativity. We do not discriminate on the basis of race, religion, national origin, age, marital status, gender, political views, beliefs, sexual orientation, color, disability status, or any other demographic factors.

PLEASE NOTE:
Our policy includes a 180-day waiting period before reconsidering candidates for the same role. This ensures a fair and thorough evaluation of all applicants. If you apply within this cool-off period, your application will be automatically rejected.

Thank you for your understanding.