Egor Kabantsov
Full Stack Engineer | Applied AI
I build web, mobile, data, and AI products. My work runs across 100+ locations and supports more than 10,000 users.
Featured projects
ate
Food JournalA camera-first Android app that turns meals into collectible stickers, mapped memories, and cuisine progress.
MediLens
Drug Safety AIA public drug-safety site and AI assistant over 20M+ FDA adverse-event reports, with dashboards by drug, reaction, and country.
Cloudy
Gratitude JournalAn Android gratitude journal for quick daily entries, streaks, and memories from earlier days.
Walter
Mindful SpendingAn Android app that locks purchase urges behind a 48-hour cooldown and shows their cost in hours of work.
Klutter
Digital WellbeingAn Android app blocker that unlocks distracting apps only after a real-world tidying task.
Moneta
Finance TrackerA personal finance app with bank-statement imports, transaction review, goals, and investment tracking.
Skills
TypeScriptReactJavaScriptHTML5CSS3AngularViteNext.jsReact NativeExpoNode.jsPythonKotlinJetpack ComposePyTorchScikit-learnPostgreSQLMySQLSQLiteMongoDBPrismaClerkSupabaseLightGBMHugging FaceRAGEmbeddingsTool CallingModel EvaluationComputer VisionFastAPIFlaskPandasNumPyParquetNest.jsExpress.jsAnt DesignTailwindshadcnD3.jsMariaDBSequelizeREST APIDatabase DesignSocket.IOJWT AuthorizationRedisRabbitMQGitDockerPostHogEASJestCI/CDAgileAWSCloudflare R2StripeGeminiDeepSeekVitestNginxRenderCursorCodexClaudeBashRussianEnglishGermanHindi
Career and education
Full Stack Engineer
Vertikal
- Built an internal HR and recruiting platform used by 200+ recruiters and managers, processing 10k to 20k applications per month, with candidate sourcing, job-board integrations, hiring stages, analytics, and scoring. Implemented AI CV analysis end to end, cutting average initial screening turnaround by about 35% in month-over-month workflow data.
- Optimized database queries and client-side data loading across a React and Node.js platform used by 100+ service centers, cutting key workflow load times by about 40%.
- Built a React, Nest.js, and TypeScript training platform with a test-based loyalty system used by 10k+ people. Mentored developers and handled requirements, implementation, testing, and production releases.
ReactNode.jsNest.jsTypeScriptMariaDBSequelizeAnt DesignJWTJestTailwindAI integrations
Software Engineer
Independent Product Studio
- Work across multiple parallel products, owning selected products end to end and collaborating on others from requirements and architecture through release and iteration.
- Healthcare and AI: built MediLens, a public drug-safety site on Cloudflare Workers over 20M+ FDA FAERS reports: an LLM agent with tool calling, RAG over FDA drug labels, guardrails, an eval set with token and latency logging, and 3D views of each drug and its protein target. Resolved 166k drug strings to 4.7k ingredients with a LoRA-fine-tuned Qwen2.5-1.5B (2x the accuracy of a 21B model, 12x faster), trained ranking models on a leak-safe 17M-row panel with MLflow, and joined 80k ClinicalTrials.gov studies.
- Mobile: shipped React Native, Expo, Kotlin, and Jetpack Compose Android products with Gemini and DeepSeek integrations, ML Kit segmentation, in-app subscriptions, Supabase auth and sync, encrypted storage, PostHog, push notifications, i18n, and automated EAS releases.
- FinTech: built a Next.js, Prisma, and PostgreSQL finance platform with calculation and payment workflows, Stripe, Clerk, and a separate Flask smart PDF-processing service on Render.
ReactReact NativeExpoKotlinJetpack ComposeTypeScriptSupabasePostHogEASPythonCloudflare Workers3Dmol.jsFastAPIDockerPyTorchLightGBMHugging FaceRAGLoRAMLflowDuckDBPandasNext.jsClerkPrismaPostgreSQLFlaskRenderGeminiDeepSeekML KitStripe
Intern Developer
Infotec
- Built the client side of a cinema seat-booking application with a small development team.
JavaScriptHTML5CSS3Team development
Frontend Developer
Freelance
- Built and deployed websites for small businesses using WordPress and custom frontend development, adapting implementation details to client requirements.
WordPressHTML5CSS3JavaScriptResponsive Design