Lead Python Expert

We're Tropic Square, 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 OnDeveloping and expanding our automated flows and hardware modelling frameworkBuilding internal tooling and infrastructure that serves both the company and the wider open-source communityDriving architectural decisions and the long-term technical direction of the codebaseExploring adjacent technical areas (verification, cybersecurity, EDA) as the work demands, with room to go deep where you're curiousCollaborating with internal teams and external contributors in a public, technically demanding setting✍️ Our StackMostly Python, Bash, C, and whatever else the job calls forCheck out our Github💪 Who You AreSenior software engineer with a track record of designing and maintaining complex systemsEither 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 reportsBackground or genuine interest in hardware, EDA, or embedded developmentExperience or interest in security. We build in a domain where it's not optionalComfortable thinking in terms of trade-offs and second-order effects, not just shipping the next featureAt home in a Unix/Linux environment and in open-source workflows (public reviews, issue trackers, async collaboration)🤝 Why Join UsA rare role where software architecture and hardware reality meetDirect, visible impact on an open-source project used in real semiconductor developmentHybrid 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.