Senior Python developer

Our stack: Python 3.12 (asyncio, FastAPI, Django), Docker, PostgreSQL, GitLab, Apache Avro, Kubernetes, AWS, RabbitMQ, C/C++/Rust We're Quantlane , a proprietary trading firm built for traders. Our goal is to create a best-in-class ecosystem that helps traders unlock their full potential. At the heart of it is our own trading platform — software that enables both manual and algorithmic trading. 👨‍💻 How we work Our development team has 16 people. We work in an agile environment, develop iteratively, and take testing seriously. We currently have three specialized product sub-teams — Execution, Data, and Infrastructure — each focused on developing and running their core domain. 📊 Who we're looking for This role is for our Execution Platform team, where we have three experienced Python developers. We tackle challenging backend problems here — performance and platform optimization, scalability, and system robustness. 🔥 Want to help build a platform that has a real impact on our traders' success? Come join us! 🚀 What your day-to-day will look like: Building backend applications in Python (asyncio, FastAPI, Django, RabbitMQ) Maintaining and shipping new features to our internal execution platform Evaluating and integrating third-party solutions Deploying applications to production (Kubernetes + Argo CD) Talking to traders and analysts — your internal customers — about the features they need Taking turns with the rest of the team on platform support Joining SCRUM ceremonies — but don't worry about pointless meetings where you wonder why you're there. For us, it's all about handling business priorities efficiently, not following SCRUM by the book. What we offer: Snacks, 5 weeks of vacation, 5 sick days, and a Multisport card Brand new, modern offices in Karlín Hybrid setup — ideally 3 days on-site Regular sessions with a company therapist / coach English lessons with a native speaker Internal training and contributions toward technical conferences A bit about you: You have backend development experience, ideally in Python or one of the compiled languages (C/C++/Rust) You know SW development best practices (Git, testing, KISS, DRY, YAGNI) You're into high-performance applications, but you're equally comfortable with standard Python backends You care about more than just writing code — you can give feedback to teammates, and you're open to taking ownership of a project You think about the architecture of what you're building, you're not afraid to share your opinion in team discussions, but you're also open to other people's perspectives Before diving in, you stop to think whether someone's already solved the problem — no reinventing the wheel You have a decent level of English, which you'll need for communicating with some of our traders Ideally, you also: Have experience designing high-performance or distributed system architectures Know Rust Have an interest in capital marketsznas