Senior Backend Engineer

About the role:

We are looking for a Software Engineer to help design, build, and scale systems that process billions of dollars in transactions and enable new financial capabilities such as lending, payments, and workflow automation. This role is open to engineers with varying levels of experience. Depending on your background, you will take ownership of key components, contribute to system design, and help drive technical decisions that shape our platform. You’ll work on distributed, event-driven systems using technologies like Scala, Kafka, Kubernetes, and AWS—solving real-world problems where reliability, scalability, and security matter.

What you'll do:

• Design and build scalable backend services and APIs for payments and financial workflows
• Contribute to event-driven systems using messaging and streaming technologies
• Collaborate with Product, Design, and Engineering to deliver practical, high-quality solutions
• Support deployments, monitoring, and troubleshooting in cloud environments
• Improve system reliability, performance, and security
• Participate in code reviews, knowledge sharing, and team discussions
• Contribute to technical design and architecture decisions (for more senior candidates)
• Explore and adopt new technologies and best practices where they add value

About you:

• Experience building backend systems in a professional environment (Scala, Java, or similar)
• Solid understanding of software design, APIs, and distributed systems
• Experience working with cloud platforms (AWS, GCP, or Azure)
• Familiarity with SQL and database design (RDBMS; NoSQL is a plus)
• Interest or experience in event-driven architecture (Kafka or similar)
• Comfortable debugging and improving production systems
• Strong problem-solving skills and a practical mindset
• Good communication skills and ability to work in a collaborative team
• Professional working proficiency in English
• Experience designing and operating large-scale, high-availability systems
• Ability to lead technical design and mentor other engineers
• Experience making architectural tradeoffs and driving solutions
• Demonstrated experience leveraging AI tools and technologies to improve workflows, enhance decision-making, or drive innovation.
• This position is preferably based in Brno, Czech Republic

Nice to have:

• Experience with Scala or functional programming
• Experience with Kafka or similar messaging systems
• Familiarity with Kubernetes and containerized environments