zernie

Location: Remote; I work US and EU hours Remote: Yes Willing to relocate: Yes, to the US Technologies: TypeScript, React, Next.js, Node.js, Ruby on Rails, PostgreSQL, Redis, GraphQL, Python; Claude Code and Codex harnesses (skills, hooks, MCP), LLM evals (Braintrust), LiteLLM Résumé/CV: https://zernie.com · https://linkedin.com/in/zernie Email: [email protected]

Senior full-stack engineer, 10+ years, mostly for North American startups. Looking for part-time or contract work, up to 3 days a week. Plain full-stack (Rails, React/Next.js, Node) is as welcome as AI work.

- Founded Archive's Claude Code and Codex harness (sole author for its first six months, #1 contributor since); #1 contributor to its ~252,000-line TypeScript/React frontend. - Creator of vigiles (https://github.com/zernie/vigiles), an open-source verifier for coding-agent harnesses: CLAUDE.md/AGENTS.md rules, skills, hooks. - Sole author, AgenticDev '26 (ACM): across 140 runs, neither of the two most-starred token-saving tools for coding agents lowered the actual bill.

If your team's coding-agent bill keeps growing, I also audit it: you get the monthly number and what to cut. https://zernie.com/audit

This is why you should never ever trust an AI coding agent to produce good code.

Use it to set up the strictest possible custom linting rules.

PostgreSQL is quite terrible at OLAP, though. We got a few orders of magnitude performance improvement in some aggregation queries by rewriting them with ClickHouse. It's incredible at it.

My rule of thumb is: PG for transactional data consistency, Clickhouse for OLAP. Maybe Elasticsearch if a full-text search is really needed.

SEEKING WORK | Eastern Europe | Remote: yes | Travel & willingness to relocate: Depending on the place

Technologies: Ruby on Rails 4+, React.js & Redux, Webpack, Bootstrap, Semantic UI, Typescript, SQL.

Résumé/CV: https://www.linkedin.com/in/zernie/

Email: [email protected]

Github: https://github.com/zernie

I'm currently working as a senior full-stack dev on a startup that has already raised more than 3 million USD in investments. Contact me immediately if you have any questions or proposals, I'm always happy to chat.

Location: Eastern Europe Remote: Yes

Willing to relocate: Depending on the place

Technologies: Ruby on Rails, React.js/Redux, Rspec, Typescript, SQL, CSS;

Résumé/CV: https://www.linkedin.com/in/zernie/

Email: [email protected]

Github: https://github.com/zernie

I'm currently working as a senior full-stack dev on a blockhain startup that has raised more than 3 million $ in investments. My hourly rates are reasonable and negotiable.

Location: Eastern Europe

Remote: Yes

Willing to relocate: Depending on the place

Technologies: Ruby on Rails, React.js/Redux, Rspec, Typescript, SQL, CSS;

Résumé/CV: https://www.linkedin.com/in/zernie/

Email: [email protected]

Github: https://github.com/zernie

I'm currently working as a senior full-stack dev on a blockhain startup that has raised more than 3 million $ in investments. My hourly rates are reasonable and negotiable.

SEEKING WORK Remote: yes

Location: Eastern Europe

Skills: Ruby on Rails, React.js/Redux, Rspec, Typescript, SQL, CSS;

Email: [email protected]

Github: https://github.com/zernie

Linkedin: https://www.linkedin.com/in/zernie/

=====================================

I'm currently working as a senior full-stack dev on a blockhain startup that has raised more than 3 million $ in investments. My hourly rates are reasonable and negotiable.

SEEKING WORK | Software Developer | Eastern Europe, Remote / visa sponsorship / travel possible

Skills: Ruby, Ruby on Rails, JavaScript, React.js, Redux,

Github: https://github.com/zernie LinkedIn Profile: http://linkedin.com/zernie

I have more than two years under my belt working as a remote Ruby on Rails/ React.js dev. Currently working on blockchain-based projects.

I use the following tools & technologies on a daily basis: Ruby on Rails (4-5), Rspec, Capistrano, Capybara, React.js, Redux, jQuery, Stimulus.js, MySQl, PostgreSQL, Boostrap, Semantic UI.

I prefer part-time positions with 20-30 of hours work per week.

Email: zergetaev[at]gmail.com