Looking for a job

Vitalii Stefaniv

@vitaliistf

Full-stack engineer, 6+ years: TypeScript, Node.js/NestJS, React/Next.js, PostgreSQL, Java/Spring. AI, multi-tenant SaaS, high-load, payments.

Czechia

Message

What I'm looking for

Remote Senior Full-Stack or Backend role on a product team where engineers own technical decisions. Stack: TypeScript, Node.js/NestJS, React/Next.js, PostgreSQL; also Java/Spring. Most excited by AI features, SaaS, payments, high-load and event-driven systems. Based in Czechia (CET), open to US overlap. Full-time or long-term contract.

Full-stack developer with 6+ years of commercial experience. Core stack: TypeScript, Node.js (NestJS), React/Next.js and PostgreSQL; equally comfortable with Java and Spring Boot. I enjoy products with real complexity behind them: AI-powered features, multi-tenant SaaS, access control, payments and event-driven systems. Looking for a remote Senior Full-Stack or Backend role on a product team where engineers own technical decisions. Based in Czechia (CET), happy to overlap with US or other time zones; full-time or long-term contract.

At Knostic AI, I worked on an enterprise AI security platform that helps prevent knowledge oversharing and undersharing in LLM-powered tools. The platform served 10+ enterprise customers, supported 4+ AI-tool integrations, and handled 10K+ access checks per day.

Across three interconnected healthcare education and hiring platforms under NDA, I improved student–preceptor matching and helped cut result generation time by 30%. I also developed an automated matching system using an event-driven microservice architecture with 8+ services, processing 10K+ matches per month.

At Cypress Lawn, I contributed to a portal and customer care center platform for family services. At DubaiNight, I contributed to venue and event listings, search, user profiles, and CMS features for offers and news.

Experience

Work history, roles, and key accomplishments

Full-Stack Developer

Knostic AI

Oct 2025 - Oct 2026 (1 year)

Worked on an enterprise AI security platform providing need-to-know based access controls for LLM-powered tools, serving 10+ enterprise customers and processing 10K+ access checks per day.

NodeJS NestJS TypeScript React PostgreSQL GCP Docker Tailwind

Full-Stack Developer

Confidential Healthcare Company

Apr 2023 - Sep 2025 (2 years 5 months)

Worked across three interconnected platforms for healthcare education and hiring, including student-preceptor matching and employer-candidate matching systems, improving matching engines and building event-driven microservices.

NodeJS NestJS TypeScript Next.js PostgreSQL Microservices Event Driven Architecture Azure Docker CI CD MongoDB OpenAI API

Full-Stack Developer

Cypress Lawn

Oct 2021 - Mar 2023 (1 year 5 months)

Contributed to a portal platform for a memorial and funeral care provider, including a customer care center with multilingual support and financial operations.

NodeJS NestJS TypeScript React Vite React Router Tanstack Query React Hook Form Zod Shadcn Ui Radix UI Tailwind MS SQL Server Azure SQL Prisma Azure Docker CI CD Redis Stripe Sendgrid Playwright Vitest

Full-Stack Developer

DubaiNight

Oct 2020 - Sep 2021 (11 months)

Contributed to the development of venue and event listing features, search, user profiles, and CMS for offers and news on a leading online guide to Dubai's hospitality and nightlife.