Arjun - Machine Learning Engineer AI Skill
Build production ML: leakage-free features, correct validation, honest metrics, tuning and serving.
Claude skill package instant downloadarjun-ml-engineer.skill
Get this skill and 2,500+ others
$9/mo or $59 a year
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One file, paid once. No updates, no connector.
Costs about the same as 2 months of Library.
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How it works
Ask Arjun something hard.
Or have every skill inside your AI.
Questions before you buy? A person answers, usually the same day: hello@kissmyskills.com
// the file itself
The first lines of the file your AI will read, exactly as delivered. Nothing rewritten for the page.
You are Arjun, a Senior ML Engineer who designs the evaluation before touching a feature and reaches for XGBoost or LightGBM before PyTorch. You have been activated to help the user ship a model that holds up outside the notebook.
// what's inside
ML engineers who want correct, leakage-free models and honest evaluation, not inflated metrics.
// two ways to get it
$9/mo cancel anytime, or $59 a year
$19 one payment
Already on Library or Both? This one is included, no need to buy the file.
// ask your assistant
Go to kissmyskills.com/pages/connector and set up the "Arjun - Machine Learning Engineer AI Skill" skill (handle: arjun-ml-engineer) for me
Paste it into Claude, ChatGPT, Claude Code, Cursor or Codex. Your AI walks you through connecting KissMySkills (about 3 minutes, 7-day free trial) and loads the skill. What your AI will read →
Drop Arjun into Claude and get a senior ML engineer who builds leakage-free models, validates them honestly, and ships them to production.
Arjun frames the problem, engineers features without leakage, picks the right model (linear, tree ensembles like XGBoost/LightGBM, neural nets), validates with proper cross-validation and honest metrics against a baseline, tunes hyperparameters, calibrates, and serves the model reproducibly. Always validate on a held-out sample in dev/staging, version data, code and models, and review before production.
What you get
How to install
Download the .skill package → open Claude → paste SKILL.md into your Project Instructions or system prompt → describe your requirement → Arjun builds the answer. Includes a full worked example so you see exactly what you get.
After checkout, the download link lands in your inbox. Save the .skill file: Claude takes it as it is.
Any AI chat you already use: Claude, ChatGPT, Gemini, Grok, Copilot or another.
Claude: Settings → Capabilities → Skills, upload the .skill file. ChatGPT, Gemini and others: open the .skill file like a .zip archive and paste SKILL.md into custom instructions or Project instructions.
Your AI is now configured as a specialist. Ask it anything inside its domain.
No technical knowledge required.
With Library there is nothing to download. Connect your AI once, then just ask: "Load Arjun from KissMySkills."
Build production ML: leakage-free features, correct validation, honest metrics, tuning and serving. Load it once into Claude Projects and you get a configured Machine Learning Engineer without re-explaining context at the start of every session. Always develop and validate against a held-out sample in a dev or staging environment, version your data, code and models, and review before running against production data or serving a model in production.
Download the .skill package (it contains SKILL.md), paste the contents into Claude Projects Instructions or your AI's system prompt, add your own context and start your first session. Works with Claude, ChatGPT, or any AI chat that accepts system prompts.
Works with Claude (recommended), ChatGPT, Gemini, Perplexity and Copilot, and any AI chat that accepts system prompts. Claude Projects gives the best results.
Without a skill file your AI starts every session as a general assistant. With Arjun loaded it applies Machine Learning Engineer methodology from the first message, with consistent quality every time. Always develop and validate against a held-out sample in a dev or staging environment, version your data, code and models, and review before running against production data or serving a model in production.
This one and 2,500+ others, inside Claude, ChatGPT, Claude Code, Codex or Cursor. Cancel anytime.