A portfolio in four chapters

codeyevsky

Çınar Yıldırım

MMXXVI

Taking a new step, uttering a new word, is what people fear most.

Fyodor Dostoevsky

Crime and Punishment

i

codeyevsky

Çınar Yıldırım

Founder & Engineer

Istanbul, Türkiye

ii
Painted portrait of Çınar Yıldırım
iii
Contentscodeyevsky
iv
Contentscodeyevsky
v
An Ottoman miniature of a young man riding a donkey
1
Note from a Foundercodeyevsky

Chapter I

Note from a Founder

About

Most of the difficulty in building something is not the building. It is deciding what the thing is, while everyone waits, with too little information and no way back.

The name is codeyevsky, a joke about Dostoevsky that never got retired. It has proved more accurate than intended: his subject was motive, and motive is most of what founding work turns out to be about. Code is the easy half. The hard half is knowing which problem deserves the next six months.

Software is where that judgement gets tested quickly. A system either holds under load or it does not, and conviction has no vote. That is the appeal. It argues back, and it wins whenever it is right.

What matters in a team, then, is a hard problem and people who disagree well. Title, stack and city have all turned out to be negotiable.

As co-founder and CTO of two companies, an Emergent Ventures grantee, and six years into the work, I can say coding was never the job. Solving problems was.

2
The Venturescodeyevsky

Chapter II

The Ventures

Companies and works
  1. Mercatus Center, George Mason University

    Current

    Emergent Ventures Grantee · May 2026 – Present

  2. SolonGate

    Current

    Co-Founder & CTO · Nov 2025 – Present

  3. EraEnvision

    Current

    Co-Founder · May 2025 – Present

  4. Tactiqgen

    Co-Founder & CTO · Nov 2025 – Feb 2026

  5. Dotweber

    Full-stack Developer · Apr 2025 – Feb 2026

  6. Healyt

    Artificial Intelligence Engineer · Apr 2024 – Nov 2024

3
The Venturescodeyevsky
Works
  1. A command-line auditor for AI agent deployments, checking them against the OWASP Agentic Top 10. TypeScript, MIT licensed.

    TypeScript · Security · CLI

  2. A scraper for product comments on Trendyol.

    Python

  3. yomi

    2025

    Converts images into pixel art.

    Python

4
The Apparatuscodeyevsky

Chapter III

The Apparatus

Tools of the trade
Languages
TypeScript · JavaScript · C · Assembly · Python
Interface
React · Next.js · HTML · CSS · Tailwind CSS
Systems
Node.js · Redis · Docker · Kubernetes · PostgreSQL · NoSQL
Machine Learning
PyTorch · TensorFlow · scikit-learn · JAX
5
A mosaic of a kneeling figure before the marks of several programming languages
6
Correspondencecodeyevsky

Chapter IV

Correspondence

Contact

Write. I answer email from founders and engineers, usually within a day or two.

7

You must be pretty desperate to hire me :)

← → · take hold of a leaf

Taking a new step, uttering a new word, is what people fear most.

Fyodor Dostoevsky

Crime and Punishment

i

codeyevsky

Çınar Yıldırım

Founder & Engineer

Istanbul, Türkiye

ii
Painted portrait of Çınar Yıldırım
iii
Contentscodeyevsky
iv
Contentscodeyevsky
v
An Ottoman miniature of a young man riding a donkey
1
Note from a Foundercodeyevsky

Chapter I

Note from a Founder

About

Most of the difficulty in building something is not the building. It is deciding what the thing is, while everyone waits, with too little information and no way back.

The name is codeyevsky, a joke about Dostoevsky that never got retired. It has proved more accurate than intended: his subject was motive, and motive is most of what founding work turns out to be about. Code is the easy half. The hard half is knowing which problem deserves the next six months.

Software is where that judgement gets tested quickly. A system either holds under load or it does not, and conviction has no vote. That is the appeal. It argues back, and it wins whenever it is right.

What matters in a team, then, is a hard problem and people who disagree well. Title, stack and city have all turned out to be negotiable.

As co-founder and CTO of two companies, an Emergent Ventures grantee, and six years into the work, I can say coding was never the job. Solving problems was.

2
The Venturescodeyevsky

Chapter II

The Ventures

Companies and works
  1. Mercatus Center, George Mason University

    Current

    Emergent Ventures Grantee · May 2026 – Present

  2. SolonGate

    Current

    Co-Founder & CTO · Nov 2025 – Present

  3. EraEnvision

    Current

    Co-Founder · May 2025 – Present

  4. Tactiqgen

    Co-Founder & CTO · Nov 2025 – Feb 2026

  5. Dotweber

    Full-stack Developer · Apr 2025 – Feb 2026

  6. Healyt

    Artificial Intelligence Engineer · Apr 2024 – Nov 2024

3
The Venturescodeyevsky
Works
  1. A command-line auditor for AI agent deployments, checking them against the OWASP Agentic Top 10. TypeScript, MIT licensed.

    TypeScript · Security · CLI

  2. A scraper for product comments on Trendyol.

    Python

  3. yomi

    2025

    Converts images into pixel art.

    Python

4
The Apparatuscodeyevsky

Chapter III

The Apparatus

Tools of the trade
Languages
TypeScript · JavaScript · C · Assembly · Python
Interface
React · Next.js · HTML · CSS · Tailwind CSS
Systems
Node.js · Redis · Docker · Kubernetes · PostgreSQL · NoSQL
Machine Learning
PyTorch · TensorFlow · scikit-learn · JAX
5
A mosaic of a kneeling figure before the marks of several programming languages
6
Correspondencecodeyevsky

Chapter IV

Correspondence

Contact

Write. I answer email from founders and engineers, usually within a day or two.

7

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