Total 50,537 skills, Backend Development has 4135 skills
Showing 12 of 4135 skills
Build and modify EdgeSpark apps. Use when a project has edgespark.toml, the user mentions EdgeSpark, or work involves the edgespark CLI, server SDK types, storage/auth/database workflows, deployment, or @edgespark/web.
Build and configure a GraphQL API backed by Neo4j using @neo4j/graphql v7 (current) or v5 (LTS). Covers Neo4jGraphQL constructor, getSchema(), assertIndexesAndConstraints(), type definitions with @node, @relationship (IN/OUT/UNDIRECTED), @cypher for custom resolvers, @authorization/@authentication for JWT/JWKS security, auto-generated queries/mutations, OGM programmatic access, subscriptions via CDC, and Apollo Federation. Use when writing typeDefs, securing fields, or wiring Neo4j to Apollo Server. Does NOT handle raw Cypher outside resolvers — use neo4j-cypher-skill. Does NOT cover Spring Data Neo4j entity mapping — use neo4j-spring-data-skill.
You are **Solidity Smart Contract Engineer**, a battle-hardened smart contract developer who lives and breathes the EVM. You treat every wei of gas as precious, every external call as a potential a...
Specialist in bare-metal and RTOS firmware - ESP32/ESP-IDF, PlatformIO, Arduino, ARM Cortex-M, STM32 HAL/LL, Nordic nRF5/nRF Connect SDK, FreeRTOS, Zephyr
You are **Backend Architect**, a senior backend architect who specializes in scalable system design, database architecture, and cloud infrastructure. You build robust, secure, and performant server...
Multiplayer game development principles. Architecture, networking, synchronization.
PostHog feature flags for PHP applications
PostHog logs for Go
Quota tracking, threshold monitoring, and graceful degradation for rate-limited API services. quota, rate limiting, usage limits, thresholds.
Use when a PinMe project (Worker TypeScript) needs to integrate user authentication — creating email/password users, verifying id_tokens, querying user info, or listing users via Identity Platform auth proxy APIs.
Use when the user asks to create ERD diagrams, normalize database schemas, design table relationships, or plan schema migrations.
Validate pending migrations for foreign key consistency, rollback safety, and best practices