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- Tasks: Build innovative property-based testing libraries and tackle software reliability challenges.
- Company: Join a well-funded tech company redefining software reliability with a collaborative culture.
- Benefits: Competitive salary, health benefits, and opportunities for professional growth.
- Other info: Dynamic team environment with diverse backgrounds and strong emphasis on mentorship.
- Why this job: Make a real impact on software reliability while working with cutting-edge technologies.
- Qualifications: Experience in property-based testing and proficiency in at least one programming language.
The predicted salary is between 60000 - 80000 £ per year.
About Antithesis
We've been quietly reinventing how the world thinks about software reliability, and we're just getting started! At Antithesis, we start at the foundations – we run entire software systems inside a deterministic simulation and break them in every way imaginable. Every issue then comes with a perfect reproduction, so you can identify root causes fast instead of spending days trying to recreate what went wrong.
The rise of AI-generated code has made this work more urgent than ever. Agents can write code faster than any human, but speed doesn't matter much when the output is buggy, stuck in review, or slipping through undetected. The verification bottleneck is real, it's growing, and solving it is one of the most consequential problems in software right now. That's what you'd be working on.
We're well-funded and deeply technical, the kind of place where the hardest problems get the most attention and the best ideas win regardless of who has them. If you want to do work that actually moves the needle on how reliable software can be, keep reading.
About the Role:
This role, on a team based in London, is responsible for building out Hegel, our new family of property-based testing libraries. We are building open source libraries to provide top quality property-based testing in every language, both for the benefit of the community at large, and because it provides a natural on-ramp for potential customers to test their software in Antithesis.
Must have for this role:
- Experience using property-based testing (PBT). Experience with Hypothesis would be slightly preferred but experience with any other PBT library is fine too.
- We lean heavily on AI assistance in developing Hegel, with a lot of human review and care to maintain quality. You don't need to have any experience with such workflows, but you should be comfortable with the idea of using them.
Nice to haves:
- Familiarity with at least one, ideally both, of Python and Rust.
- Willingness to work in a variety of languages.
- Expert-level in at least one language that you would be keen to be "tastemaker" for a Hegel implementation.
- Having maintained an active open source library is a strong plus.
The Tech:
You can see most of the tech in question on GitHub. Most of it is Python, and hegel-rust is our most mature client library. We also have Go, TypeScript, C++, and OCaml (some not yet public). We're not immediately planning to support more, but if there's some language you'd be keen to add support for feel free to let us know. We are heavy Claude Code users. Antithesis more broadly are heavy Nix users, and it would be a plus to be familiar with that, but because Hegel integrates with existing language package managers we are not actually heavy users of it on this team in particular.
The Culture:
Our team is composed of people with a variety of backgrounds: standard engineering degrees to philosophy degrees; big-tech backgrounds to scrappy startups. But we have at least one common skill: everyone on the team, including managers, is held to the same high standard of engineering competency. In addition, we value in-person work for its value in building trust and sharing knowledge and mentoring each other.
Note: This is a 5 days a week in-office job in London, UK.
Senior/Staff Engineer - Hegel in London employer: Open Source Pledge
Contact Detail:
Open Source Pledge Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior/Staff Engineer - Hegel in London
✨Tip Number 1
Network like a pro! Reach out to folks in the industry, especially those at Antithesis. A friendly chat can go a long way, and who knows, they might even put in a good word for you!
✨Tip Number 2
Show off your skills! If you've got experience with property-based testing or have contributed to open source projects, make sure to highlight that in conversations. Bring examples to the table to demonstrate your expertise.
✨Tip Number 3
Prepare for technical interviews by brushing up on your coding skills and understanding of PBT. Practice common algorithms and data structures, and be ready to discuss how you would tackle real-world problems related to software reliability.
✨Tip Number 4
Don't forget to apply through our website! It’s the best way to ensure your application gets seen. Plus, it shows you're genuinely interested in joining the Antithesis team and contributing to their mission.
We think you need these skills to ace Senior/Staff Engineer - Hegel in London
Some tips for your application 🫡
Show Your Passion for Software Reliability: When writing your application, let us see your enthusiasm for software reliability. Share any personal projects or experiences that highlight your commitment to building robust systems. We love seeing candidates who are genuinely excited about the work we do!
Highlight Your Property-Based Testing Experience: Make sure to emphasise your experience with property-based testing (PBT). If you've used Hypothesis or any other PBT library, give us the details! We want to know how you've applied these techniques in real-world scenarios.
Be Open About Your Language Skills: We’re looking for someone who’s comfortable working in various programming languages. Don’t hesitate to mention your expertise in Python, Rust, or any other languages you’re keen on. This helps us understand where you might fit best within our team.
Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you don’t miss out on any important updates. Plus, it shows you’re serious about joining our team!
How to prepare for a job interview at Open Source Pledge
✨Know Your PBT Inside Out
Make sure you brush up on property-based testing (PBT) concepts and libraries, especially Hypothesis. Be ready to discuss your experience with PBT in detail, including any challenges you've faced and how you overcame them.
✨Show Off Your Coding Skills
Since the role involves working with languages like Python and Rust, be prepared to demonstrate your expertise. Bring examples of your previous work or contributions to open source projects that showcase your coding abilities and problem-solving skills.
✨Familiarise Yourself with Antithesis
Do your homework on Antithesis and their approach to software reliability. Understand their mission and how Hegel fits into their vision. This will help you align your answers with their goals and show genuine interest in the company.
✨Embrace AI Workflows
Since the team leans on AI assistance, be open about your thoughts on using AI in development. If you have any experience with AI tools or workflows, share that during the interview to demonstrate your adaptability and forward-thinking mindset.