# Lead Python Expert - Company: [Satoshilabs]() - Location: Prague - Team: Tropic Square - Employment type: Full Time - Posted: June 29, 2026 ## Job description We're [**Tropic Square**](https://www.tropicsquare.com), a Prague-based company **designing open-source secure-element chips**. We're looking for a **Senior Expert for a software verification platform** to join our hybrid team and help drive a long-term, open-source project at the intersection of software and hardware in the semiconductor world. You'll own core infrastructure decisions, shape architecture, and grow into a technical leadership role. If you're excited by deep technical problems with real-world impact, this might be the role for you. ## **👉 What You'll Work On** * **Developing and expanding our automated flows** and **hardware modelling framework** * **Building internal tooling and infrastructure** that serves both the company and the wider open-source community * **Driving architectural decisions** and **the long-term technical direction** of the codebase * Exploring adjacent technical areas (verification, cybersecurity, EDA) as the work demands, with room to go deep where you're curious * Collaborating with internal teams and external contributors in a public, technically demanding setting ## ✍️ **Our Stack** * Mostly **Python**, Bash, C, and whatever else the job calls for * Check out our [Github](https://github.com/tropicsquare/ts-tvl) ## **💪 Who You Are** * **Senior software engineer** with a track record of designing and maintaining complex systems * Either you've led a small team and want to keep doing it, or you're a senior IC with the instincts to mentor and steer without formal reports * Background or genuine interest in **hardware, EDA**, or **embedded development** * Experience or interest in **security**. We build in a domain where it's not optional * Comfortable thinking in terms of trade-offs and second-order effects, not just shipping the next feature * At home in a **Unix/Linux** environment and in **open-source** workflows (public reviews, issue trackers, async collaboration) ## **🤝 Why Join Us** * A rare role where **software architecture and hardware reality meet** * Direct, visible impact on an **open-source project** used in real semiconductor development * **Hybrid** by default: work from the Prague office, remotely, or mix the two, whichever fits your life. We optimize for autonomy and deep focus * In-person **team meetups in Prague** are held a few times a year for planning and architecture work 👋 **Interested?** We want to hear from you! Just **submit your CV, a brief cover letter, and links to your work**. After the initial screening, you'll be directly in touch with your future team. ## Apply [Apply on Satoshilabs]() Canonical job page: