Software Engineer,, Billie
Kotlin Focus
Buy Now, Pay Later payments for business
Be an early applicant
Buy Now, Pay Later payments for business
101-200 employees
Be an early applicant
101-200 employees
Company mission
To simplify purchasing for all companies and open up new opportunities for growth.
Role
Who you are
- Strong experience developing with JVM-based languages, especially Kotlin and Spring Boot - Experience with PHP or Python is a plus
- A solid track record of creating large, reliable backend systems that are consistently available
- Practical experience with cloud-based environments (like AWS) and microservice architecture
- A good understanding of stable API design, relational databases (like MySQL), event-driven systems (using tools like Kafka or RabbitMQ), and how different systems integrate
- Familiarity with Domain-Driven Design (DDD) and experience working in teams that are focused on delivering great products
- Excellent communication skills in English (both written and spoken)
What the job involves
- At Billie, we're making business-to-business (B2B) finance simpler and more efficient
- Our Risk Assessment team is central to this mission, tackling important areas like credit risk and fraud detection
- We're looking for a Senior Software Engineer to help us create robust, high-quality systems that support real-time financial decisions
- This is a chance to work in a dynamic environment where your contributions have a direct impact
- We value top-notch engineering and give our teams the freedom to excel
- You'll join a dedicated team that manages every aspect of its technology, from initial design to ensuring it runs smoothly in production
- You’ll operate in a "you build it, you run it" environment where engineering owns delivery and uptime
- You’ll collaborate cross-functionally with Product, Data Science, and other domains to shape the future of B2B payments
- You'll design, develop, test, launch, and maintain our backend systems, always looking for ways to make them better
- You'll work closely with our Data Science experts to put machine learning models into action
- You'll help us continuously improve our automated build and deployment (CI/CD) practices
- You'll advocate for strong engineering standards, with an emphasis on clean, scalable, and secure code
- You'll take ownership of technical projects from start to finish and support colleagues through mentorship and teamwork
- Tech Stack Highlights
- Languages: Kotlin, PHP, Python
- Frameworks: Spring Boot, Symfony
- Infrastructure: AWS, Kubernetes, Terraform
- Data & Messaging: MySQL, Kafka, RabbitMQ
- Tooling: GitHub Actions, Docker, New Relic, Prometheus, Grafana
Our take
Buy Now, Pay Later(BNPL) options have exploded in popularity in recent years, with companies such as Klarna and Clearpay providing an additional line of credit to customers allowing them to split the cost of their purchases over several installments. Billie is a BNPL built for business transactions, using machine-learning driven risk models to responsibly finance B2B purchases.
With over 100,00 customers processing more than €750 million on its platform, Billie does not face much competition in its market. While BNPL firms like Afterpay and Klarna could theoretically move into the B2B space, they are specialised in B2C financing and lack Billie's data on the B2B sector. Billie also boasts a range of features designed specifically for intra-company sales such as instant verification, invoicing tools and business payment options which give it a large advantage against any new rivals.
Billie has raised a significant amount of funding from investors, most recently in a 2021 Series C round. Additionally Its 2022 integration with Klarna, allowing companies with a Klarna installation to swiftly switch over to Billie's payment options for B2B sales has removed a major roadblock to its future expansion. This move, alongside its entrance into more markets in Europe, will likely speed the company's ascension to Unicorn status and solidify its market lead in the BNPL space.
Kirsty
Company Specialist at Welcome to the Jungle
Insights
1% employee growth in 12 months
Company
Funding (last 2 of 5 rounds)
Oct 2021
$100m
SERIES C
Jul 2019
$33.9m
SERIES B
Total funding: $149.2m
Company benefits
- Flexibility first: We come to the office for important events, but do not have a permanent office presence. Our teams decide how to get the best results
- 30 days vacation per year and 5 extra paid days to look after sick children
- Virtual Share Program
- German language courses from different language levels free of charge
- One-off relocation bonus to make your move easier
- Reimbursement of travel expenses and discount on local public transport in Berlin with the BVG
- Individual training budget of 1,000 euros for courses, conferences and more every year
- Free gym access, weekly yoga classes, healthy snacks, cereals, drinks and more
Company HQ
Kreuzberg, Berlin, Germany
Leadership
Aiga Senftleben
(General Counsel)Previously worked on the Legal Counsel at eBay and Paypal. Also worked at Funding Circle Deutschland as a General Counsel and is now a member of the Digital Finance Forum at the Federal Ministry of Finance (Germany)
Christian Grobe
(MD)Graduated from the Free University of Berlin with a Ph.D. in Political Science. Previously co-founded Funding Circle/Zencap where they served as the Managing Director. Also Worked as an Engagement Manager at McKinsey & Company.
Dr. Matthias Knecht
(Co-CEO)Previously co-founded Funding Cirlce/Zencap where they served as Managing Director. Also worked as an Engagement Manager at McKinsey & Company.
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