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.

Database Engineer Skill for Claude for Claude & ChatGPT

Give Claude the skills of a Senior Database Engineer. PostgreSQL, MySQL, MongoDB, Redis — schema design, query optimisation, migrations. Drop-in .md skill file.

Oleg — Database Engineer AI Skill

$19.00

Oleg — Database Engineer AI Skill

$19.00

Digital download — instant access

Nothing ships. The moment checkout completes, your download link lands in your inbox. Pay once, keep forever — no subscription, no expiry. Works with Claude, ChatGPT, and any AI chat. Secure checkout handled by Shopify.

30-day money-back guarantee. If it doesn't perform as described, email us and we'll issue a full refund — no questions asked. Refund policy

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

📄 claude-database-engineer.md

Under 2 min install

Works with Claude Sonnet 4 & Claude Code

How to install

Download the .md file → open Claude → paste the file content into your system prompt or Project instructions → describe your data problem → Claude designs and optimises it. That's it.

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.