hritikswho.xyz/skills
03

Capability atlas / project-linked

Skills are
connected work.

No logo cloud and no invented percentages. Every capability is attached to a product where it shaped a real architecture, interface, safety boundary or deployment.

LanguagesPythonTypeScriptJavaScriptSQLC++Bash
01

AI engineering

Model workflows that stay grounded, bounded and reviewable.

LangGraphLangChainAgentic workflowsTool callingStructured outputsInstructorPydanticRAGEmbeddingspgvectorSemantic searchPrompt designStreaming (SSE)Human-in-the-loop
Where it shows up

Agentic bid writing and assessment graphs at work; a five-agent writing pipeline, structured document edits and a 30-prompt engine in my own products.

02

Models & providers

Picking the provider per job and keeping a way out when it fails.

Azure OpenAIAzure AI FoundryGeminiMistralVoxtralGroqOpenAI-compatible APIsOllamaTavilyModel fallback chainsRetries & timeouts
Where it shows up

Custom clients with fence stripping, JSON validation, retries on 408/429/5xx and labelled deterministic fallbacks.

03

Evaluation & guardrails

Checks you can explain, before a model grades a model.

Deterministic auditsRefinement loopsSchema validationEvidence allow-listsClaim provenancePrompt-injection filteringHard eligibility gatesHash-bound approvalsLabelled fallbacksLLM eval suites
Where it shows up

Rule-based audit with three refinement rounds, five hard gates before any AI score, and one-time approval bound to a SHA-256 form snapshot.

04

Backend & APIs

Services, pipelines and the contracts between them.

PythonFastAPINode.jsTypeScriptREST APIsServer ActionsWebhooksTyper CLIsRSS / Atom ingestionStaged data pipelinesCron jobsStripe
Where it shows up

FastAPI AI services and recoverable ingestion at work; a 51-source feed pipeline and a 17-command Python CLI on my own.

05

Frontend & product

Interfaces for complex work: editors, dashboards, extensions and devices.

React 19Next.js 16TanStack StartTailwind CSSshadcn/uiRadixZustandRedux ToolkitReact QueryBlockNoteMonacoExcalidrawReact FlowCanvasGSAPExpo / React Native
Where it shows up

B2B workspaces, rich editors, a canvas wallpaper studio, an offline mobile app and this desktop OS.

06

Browser & editor platforms

Software that lives inside other software.

Chrome Manifest V3Service workersContent scriptsShadow DOMCross-frame messagingMutationObserverARIA widgetsVS Code extension APITheme authoring
Where it shows up

A Chrome extension with verified writes across frames and five ATS adapters, and a Marketplace theme suite with 300+ installs.

07

Auth, data & security

Identity and tenancy designed in, not bolted on.

PostgreSQLSupabaseRow-Level SecuritySECURITY DEFINER RPCsMigrationsSQLiteRedisMongoDBMySQLEmail OTPGoogle OAuthLinkedIn OAuthJWT claimsRBACEntitlementsMulti-tenant designSSRF protectionCSRFRate limiting
Where it shows up

Shared identity migration with claim-first checks and fallback, safe public projections, private storage and hashed OTPs.

08

Real-time & media

Shared state and live media, with their limits stated.

Yjs / CRDTsSupabase RealtimePresenceWebRTCScreen sharingServer-Sent EventsWebSockets
Where it shows up

A custom Yjs transport over Supabase and a native WebRTC mesh for research rooms.

09

Testing, cloud & delivery

Getting it shipped and keeping it green.

pytestVitestNode test runnerPlaywrightGitHub ActionsCI/CDDockerNginxAzure Container AppsAzure VMsAWS EC2AWS S3AWS CloudFrontVercelCloudflareJenkinsGit
Where it shows up

Unit suites and CI across products, Playwright smoke checks and video capture, and container delivery on Azure and AWS.