Capabilities
Skills
Grouped by depth of production experience, not by percentage.
These tiers describe how much production work sits behind each technology. Nothing here is scored, because a score would not mean anything.
Primary expertise
Daily working tools. I design, build, debug and review these without reference material.
JavaScriptTypeScriptNode.jsNestJSExpress.jsReactNext.jsREST APIsBackend architectureFull-stack developmentIntegrationsMicroservicesSystem designAuthentication & RBACProduction troubleshootingDockerTestingCI/CDGit
Strong production experience
Shipped and maintained in production systems, comfortably and repeatedly.
MySQLPostgreSQLMongoDBRedisRabbitMQFirebaseSequelizePrismaTypeORMMongooseReact NativeCapacitorNginxGoogle Cloud PlatformGitHub ActionsBitbucket PipelinesUnit & integration testingSecurity hardeningPerformance optimisationAI & LLM integrationsThird-party API integrations
Working experience
Used to deliver real features, with the depth the task required.
PHPLaravelPythonFlaskC#WordPressKubernetesKotlinSwiftLinux administrationShell & BashApacheAWSElasticsearch & OpenSearchWazuh & security tooling
Foundational knowledge
Understood at concept level from study or limited project use. Not claimed as expertise.
Java & Spring BootGoC++OpenGLMatlabNetworking (CCNA)GraphQLTerraformReduxVue.jsmacOSWindowsLinux (Ubuntu)Linux (Fedora)Linux (CentOS)Linux (Kali)
AI-assisted development
AI coding assistants and models used in day-to-day engineering work.
Claude CodeClaude Opus 4.6Claude Opus 4.7Claude Opus 4.8Claude Opus 5Claude Fable 5OpenAI CodexGPT-5.2GPT-5.3GPT-5.4GPT-5.5 SolGPT-5.6 LunaGPT TerraCursorKimi K2.6Kimi K2.7Kimi K3