Application Guide

How to Apply for Postdoctoral Researcher

at Topos Institute

🏢 About Topos Institute

The Topos Institute is a unique research organization focused on applied category theory and its interdisciplinary applications, particularly at the intersection of mathematics, computer science, and philosophy. Unlike traditional academic departments, Topos emphasizes collaborative, open-source research and practical implementations of theoretical frameworks, making it ideal for researchers who want to bridge abstract mathematics with real-world systems.

About This Role

This Postdoctoral Researcher role involves leading mathematical research on the compositional structure and dynamics of working languages, requiring both theoretical development and practical implementation. The position is impactful because it contributes to foundational research that could shape how we understand and design formal languages, while also producing academic papers, grant deliverables, and open-source software that advance the field.

💡 A Day in the Life

A typical day might involve morning discussions with fellow researchers on compositional language models, followed by solo work on mathematical proofs or paper writing. In the afternoon, you could collaborate on open-source software implementations, attend a seminar on interdisciplinary applications, or prepare a conference presentation, blending theoretical and practical tasks in a collaborative setting.

🎯 Who Topos Institute Is Looking For

  • Has a PhD in mathematics, computer science, or a related field with strong foundations in category theory, and can demonstrate this through publications or projects.
  • Is comfortable working at the boundary between mathematics and philosophy, able to tackle problems that aren't fully formalized yet, as evidenced by interdisciplinary research experience.
  • Can critically engage with Topos Institute's existing research on compositional structures and working languages, showing familiarity with their publications or open-source projects.
  • Balances theoretical development with implementation skills, possibly through contributions to research software or collaborative projects that involve both math and coding.

📝 Tips for Applying to Topos Institute

1

Tailor your research statement to explicitly connect your past work to Topos Institute's focus on compositional structures and working languages, citing specific papers or projects from their website.

2

Highlight any experience with open-source research software or collaborative tools, as Topos emphasizes practical implementations and contributions to their codebase.

3

Demonstrate your ability to work at the math-philosophy boundary by including examples in your application where you tackled semi-formalized or interdisciplinary problems.

4

Mention specific Topos researchers or projects you'd like to collaborate with, showing you've done your homework on their team and ongoing work.

5

If you have a GitHub or similar portfolio, link to repositories that showcase category theory applications or research software contributions, as this role involves implementation.

✉️ What to Emphasize in Your Cover Letter

["Explain how your PhD research or related projects align with Topos Institute's focus on compositional structures and working languages, using specific examples.", "Describe your experience working at the intersection of mathematics and philosophy, highlighting a project where problems weren't fully formalized.", 'Mention your ability to contribute to both theoretical papers and practical implementations, such as open-source software or grant deliverables.', 'Express enthusiasm for collaborating with Topos researchers and external partners, noting any relevant interdisciplinary or team-based work.']

Generate Cover Letter →

🔍 Research Before Applying

To stand out, make sure you've researched:

  • Review Topos Institute's open-source projects on GitHub (e.g., their research software repositories) to understand their implementation focus and coding practices.
  • Read recent publications from Topos researchers, especially on compositional structures and working languages, to grasp their theoretical frameworks and ongoing interests.
  • Explore the institute's blog, talks, or workshop materials to get a sense of their collaborative culture and interdisciplinary approach.
  • Look into their external partnerships or grant projects to understand how they apply category theory in practical contexts beyond academia.

💬 Prepare for These Interview Topics

Based on this role, you may be asked about:

1 Discuss your understanding of compositional structures in working languages and how category theory applies to this, possibly with examples from your research.
2 Explain how you approach problems at the boundary of mathematics and philosophy, where formalization is incomplete, using a past project as a case study.
3 Describe your experience with research software development or open-source contributions, especially in contexts related to category theory or formal languages.
4 Talk about how you would collaborate with Topos researchers on a specific ongoing project, such as those listed on their website or in recent publications.
5 Present a critical analysis of a Topos Institute paper or project related to working languages, showing your ability to engage with their research.
Practice Interview Questions →

⚠️ Common Mistakes to Avoid

  • Submitting a generic application that doesn't reference Topos Institute's specific research or shows no familiarity with their work on compositional structures.
  • Overemphasizing pure theoretical math without demonstrating experience in implementation, software, or interdisciplinary collaboration.
  • Failing to address the requirement to work at the math-philosophy boundary, such as by only discussing fully formalized problems in your research statement.

📅 Application Timeline

This position is open until filled. However, we recommend applying as soon as possible as roles at mission-driven organizations tend to fill quickly.

Typical hiring timeline:

1

Application Review

1-2 weeks

2

Initial Screening

Phone call or written assessment

3

Interviews

1-2 rounds, usually virtual

Offer

Congratulations!

Ready to Apply?

Good luck with your application to Topos Institute!