We’re Tropic Square, a Prague-based company designing open-source secure-element chips.
About the role
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
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Developing and expanding our automated flows and hardware modelling framework
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Building internal tooling and infrastructure that serves both the company and the wider open-source community
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Driving architectural decisions and the long-term technical direction of the codebase
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Exploring adjacent technical areas (verification, cybersecurity, EDA) as the work demands, with room to go deep where you’re curious
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Collaborating with internal teams and external contributors in a public, technically demanding setting
✍️ Our Stack
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Mostly Python, Bash, C, and whatever else the job calls for
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Check out our Github
💪 Who You Are
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Senior software engineer with a track record of designing and maintaining complex systems
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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
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Background or genuine interest in hardware, EDA, or embedded development
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Experience or interest in security. We build in a domain where it’s not optional
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Comfortable thinking in terms of trade-offs and second-order effects, not just shipping the next feature
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At home in a Unix/Linux environment and in open-source workflows (public reviews, issue trackers, async collaboration)
🤝 Why Join Us
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A rare role where software architecture and hardware reality meet
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Direct, visible impact on an open-source project used in real semiconductor development
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Hybrid by default: work from the Prague office, remotely, or mix the two, whichever fits your life. We optimize for autonomy and deep focus
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In-person team meetups in Prague are held a few times a year for planning and architecture work
Hiring process
👋 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.