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How I rate proficiency/familiarity

These ratings show my relative familiarity with each technology based on practical exposure. A rating of five represents substantial experience compared with other items on this website—not self-claimed complete mastery or expertise.

This overview also serves as a personal record of technologies I have used or explored.

  1. Learning

    Brief exposure; I’ve only used it a little.

  2. Familiar

    Some experience; I’m familiar with the fundamentals.

  3. Proficient

    Regular experience; I’m comfortable with most common concepts.

  4. Advanced

    Considerable experience; I’m highly familiar with it.

  5. Extensive

    Extensive, long-term experience; I know it in depth.

The categories are intentionally broad and informal, so individual entries and omissions should not be interpreted too strictly.

JavaSince 2018Last used: PresentVersions: 25, 21, 17, 11Used atCloud Software EngineerTechnical PO & Full Stack EngineerBachelor of Science in Computer Science
Auth & SSO (OAuth2, JWT, OIDC)Since 2023Last used: PresentUsed atCloud Software EngineerTechnical PO & Full Stack Engineer
Claude CodeSince 2025Last used: PresentUsed atCloud Software EngineerSysplainedPersonal WebsiteDaily Tech Wiki
CodexSince 2025Last used: PresentUsed atCloud Software EngineerSysplainedPersonal WebsiteDaily Tech Wiki
CursorSince 2025Last used: PresentUsed atCloud Software EngineerSysplainedPersonal WebsiteDaily Tech Wiki
GitLab CI/CDSince 2024Last used: PresentUsed atCloud Software EngineerData Scientist & Application Engineer
Google WorkspaceSince 2020Last used: PresentUsed atTechnical PO & Full Stack EngineerFull Stack DeveloperSysplained
i18nSince 2024Last used: PresentUsed atPersonal Website
KeycloakSince 2024Last used: PresentVersions: 26Used atCloud Software Engineer
LiquibaseSince 2024Last used: PresentUsed atCloud Software Engineer
MavenSince 2018Last used: PresentUsed atCloud Software EngineerBachelor of Science in Computer Science
Model Context Protocol (MCP)Since 2025Last used: Present
OpenCodeSince 2025Last used: PresentUsed atCloud Software EngineerSysplainedPersonal WebsiteDaily Tech Wiki
PostgreSQLSince 2021Last used: PresentVersions: 17, 16, 15Used atCloud Software EngineerFull Stack Developer
AnsibleSince 2026Last used: PresentUsed atCloud Software Engineer
Apache KafkaSince 2026Last used: PresentUsed atCloud Software Engineer
Apache NiFiSince 2026Last used: PresentUsed atCloud Software Engineer
BunSince 2024Last used: PresentUsed atPersonal Website
FigmaSince 2020Last used: PresentUsed atTechnical PO & Full Stack EngineerFull Stack Developer
Framer MotionSince 2024Last used: PresentUsed atPersonal Website
KubernetesSince 2024Last used: PresentUsed atCloud Software Engineer
NetworkingLast used: PresentUsed atAWS Certified Solutions Architect – Associate
Observability (OpenTelemetry)Since 2024Last used: PresentUsed atCloud Software Engineer
OpenShiftSince 2026Last used: PresentUsed atCloud Software Engineer
PKI & CertificatesSince 2024Last used: PresentUsed atCloud Software Engineer
Spring AISince 2026Last used: PresentVersions: 2Used atCloud Software Engineer
Tailwind CSSSince 2025Last used: PresentVersions: 4Used atSysplained
Vercel / NetlifySince 2021Last used: PresentUsed atTechnical PO & Full Stack EngineerFull Stack Developer
ArgoCDSince 2026Last used: PresentUsed atCloud Software Engineer
HelmSince 2026Last used: PresentUsed atCloud Software Engineer
TauriSince 2025Last used: PresentVersions: 2Used atSysplained
VueSince 2024Last used: PresentVersions: 3Used atCloud Software Engineer
Azure (Terraform)Since 2023Last used: PresentUsed atCloud Software Engineer
RustSince 2025Last used: PresentUsed atSysplained
Google Analytics 4Since 2022Last used: 2023Used atTechnical PO & Full Stack EngineerSysplainedPersonal Website
HardhatSince 2021Last used: 2023Used atDeferralUZH Swap
PrismaSince 2021Last used: 2023Used atFull Stack DeveloperTechnical PO & Full Stack Engineer
React NativeSince 2020Last used: 2023Used atTechnical PO & Full Stack EngineerFull Stack Developer
Digital OceanSince 2022Last used: 2023Used atTechnical PO & Full Stack Engineer
ExpoSince 2021Last used: 2023Used atTechnical PO & Full Stack Engineer
Next.jsSince 2021Last used: 2023Versions: 14, 13Used atFull Stack DeveloperTechnical PO & Full Stack Engineer
TypeChainSince 2021Last used: 2023Used atDeferral
SketchSince 2020Last used: 2022Used atTechnical PO & Full Stack Engineer
UniswapSince 2021Last used: 2022Used atUZH Swap
EiffelSince 2019Last used: 2020Used atBachelor of Science in Computer Science
CSince 2019Last used: 2020Used atBachelor of Science in Computer Science

Skills last updated July 31, 2026