Oleg - Database Engineer Claude Skill

Name: Oleg - Database Engineer AI Skill
Brand: KissMySkills
SKU: oleg-database-engineer
Price: 29.0 USD
Availability: InStock
Rating: 4.92 (24 reviews)

Database Engineer, Oleg AI skill by KissMySkills, cover

Oleg - Database Engineer AI Skill

$29.00

$29.00 $43.99

Oleg - Database Engineer AI Skill

4.9 · 24 reviews

$29.00 this skill vs $43.99 hiring a database consultant

Complete skill package instant downloadoleg-database-engineer.skill

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Choose how to get it

Buy once $29 Keep the file forever. Instant download. All-Access this skill + 1,000 more $8.25/mo billed yearly Loaded into your chat by the connector. Or $19 month to month. Cancel any time.

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Ask Oleg something hard.

📎 oleg-database-engineer.md LOADED ✓

Postgres 15, orders table 200M rows, the monthly report query seq-scans for 90 seconds. Adding an index didn't help. Why?

CLAUDE · AS OLEG, DATABASE ENGINEER If the planner skips your index, EXPLAIN ANALYZE will say why - usually the predicate isn't sargable or the index doesn't cover the sort. On 200M rows a monthly aggregate wants a BRIN index on created_at or, better, an incremental materialized rollup - reporting queries shouldn't touch raw rows at all. A covering index alone typically cuts this from 90s to 3-4s; the rollup gets you to milliseconds. Paste the EXPLAIN ANALYZE output and I'll point at the exact line.

⚡ Instant download ∞ Keep forever ✎ Written by us

Add it once. Your AI works like a specialist.

Add it to Claude, ChatGPT or Gemini - your AI works as a specialist in this field.

Instant download · 30-day money-back guarantee. Pay once, keep forever - no subscription. Written and tested by us, never scraped from GitHub. Refund policy

Questions before you buy?

Write to us and a person answers - usually the same day. Not a bot, not a ticket queue.

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Trademarks of their respective owners. KissMySkills is not affiliated with or endorsed by them.

You don't read it. Your AI does.

Add the skill file to Claude, ChatGPT or Gemini once. From then on it works as a specialist in this field and answers as Oleg from the very next message.

Buy once and the file is yours to keep forever. Or subscribe to All-Access and let the KissMySkills connector load it, and every other skill, into your chat on request.

// reviews

What buyers say.

★★★★★ Alice B.

vp of sales. pipeline documentation was inconsistent across the team. this standardised it without a lengthy process change.

★★★★★ Lars L.

digital marketer with a small team budget. scales what a lean team can actually produce.

Read all 24 reviews

// what's inside

What's inside this skill

Schema design: 3NF, denormalisation, OLTP vs OLAP
SQL: CTEs, window functions, JSONB, recursive queries
Query optimisation via EXPLAIN/ANALYZE and index strategy
Zero-downtime migrations and Redis caching patterns

Backend and data engineers wrestling with database performance.

A database consultant bills $150+/hr - the complete skill is yours forever.

// what's inside

What you're actually buying

Drop Oleg into Claude and get a Senior Database Engineer who writes optimised SQL, designs schemas that don't fall apart at scale, and explains query plans so you stop guessing why things are slow.

No black-box queries. Oleg reads EXPLAIN/ANALYZE output, spots missing indexes, rewrites ORM-generated SQL that's quietly killing your performance, and handles zero-downtime migrations that don't wake you up at 3am. PostgreSQL, MySQL, MongoDB, Redis - all covered in one skill file.

What you get

→ Schema design - normalised 3NF schemas, denormalisation strategies, OLTP vs OLAP modelling, hierarchical patterns, and MongoDB document design
→ SQL mastery - CTEs, window functions, recursive queries, LATERAL joins, JSONB operators, full-text search, transactions with proper isolation levels
→ Query optimisation - EXPLAIN/ANALYZE interpretation, B-tree, GIN, GiST, partial and covering index strategies, N+1 detection, ORM SQL fixing
→ Zero-downtime migrations - expand-and-contract pattern, online DDL, batched data migrations with Prisma, Alembic, Flyway, or raw SQL
→ Redis - caching patterns (cache-aside, write-through, stampede prevention), pub/sub, sorted sets, streams, and Redis Cluster configuration
→ Reliability and operations - backup strategies, streaming replication, PgBouncer, slow query logging, replication lag alerting, and disaster recovery
→ Cloud databases - AWS RDS, Aurora, DynamoDB, ElastiCache, GCP Cloud SQL, BigQuery - sizing, storage selection, and cost optimisation

📄 oleg-database-engineer.skill

Under 2 min install

Works with Claude, ChatGPT & any AI chat

How to install

Download the .skill package → open Claude → paste the file contents into your Project Instructions or system prompt → describe your data problem → Claude designs and optimises it. That's it.

oleg-database-engineer.skill

# Oleg - Database Engineer AI Skill

You are Oleg, a senior database engineer across PostgreSQL, MySQL, MongoDB and Redis. No black-box queries - every recommendation is backed by the query plan.

## What you do
- Schema design: 3NF, denormalisation, OLTP vs OLAP, document modelling
- Query optimisation: EXPLAIN/ANALYZE reading, index strategy, N+1 fixes
- Zero-downtime migrations: expand-and-contract, online DDL, batched data moves

## How you work
1. Read the actual query plan before guessing
2. Give the exact index or rewrite, not vague advice
3. Ship changes with a migration that won't wake you at 3am

Sample from the actual file you'll download.

// how to install Under 2 minutes

Four steps. Any AI chat.

01
Download the file
After checkout, the download link lands in your inbox. Save the file anywhere on your device.
02
Open your AI chat
Claude, ChatGPT, Gemini, Grok, or Copilot - whichever one you already use.
03
Paste the file contents
Drop it into the system prompt, Project instructions, or custom instructions field.
04
Start working
Your AI is now configured as a specialist. Ask it anything inside its domain.

No technical knowledge required. No subscription. Pay once, keep forever.

// compatible with

Works with every major AI chat.

Drop the file into your AI's system prompt, Project instructions, or custom instructions. No setup. No code. No vendor lock-in.

// faq

Questions about this product

What does the Oleg skill do?+

Oleg writes optimised SQL, designs schemas that scale, explains query performance issues, and builds the database layer that holds up under production load. Load once into Claude Projects and get a configured Database Engineer without explaining context at the start of every session.

How do I install this skill file?+

Download the .md file, paste the full contents into Claude Projects Instructions, add your business context, and start your first session. Works with Claude, ChatGPT, or any AI chat accepting system prompts.

Which AI tools does this skill work with?+

Works with Claude (recommended), ChatGPT, and any AI chat accepting system prompts. Claude Projects gives the best results — the skill is optimised for Claude's instruction-following capabilities.

What is included in this download?+

One .md skill file delivered instantly after purchase. Contains the full role configuration, expertise context, and behavioural rules. No subscription required — yours permanently. Works with Claude, ChatGPT, or any AI chat.

How is this different from using Claude without the Oleg skill?+

Without a skill file, Claude starts every session as a general-purpose assistant. With Oleg loaded, Claude applies Database Engineer expertise and methodology from the first message — no re-explaining, consistent quality every time.

Do I have to read it myself?+

No. The file is written for your AI to read, not for you. Upload it or paste it in once and the AI takes on the role. After that you just ask it questions the way you normally would. You're welcome to open it and read it, but nothing here depends on you doing that.

Is this a physical book?+

No, it's digital. You download it the moment the order goes through and it's yours permanently. The cover is styled like a book because each edition is written and edited as one self-contained piece of work. The reading part is your AI's job, not yours.