Артур

DEMENSKIY ARTUR
Ukraine, Kyiv | [open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section) | telegram: @skituc, @artua_skitus

ABOUT ME

Purpose-driven technologist with 3 ½ + years shaping and scaling digital products in settings that range from
scrappy pre-seed startups to mature product companies and global outsource teams. I thrive on change: new
domains, cultures, and toolchains energize me rather than slow me down, and I’m quick to turn abstract goals into
concrete, shippable solutions. Colleagues value my strategic mindset—seeing the bigger picture, aligning daily
decisions with long-term product vision—and my habit of communicating early, clearly, and candidly. I learn fast,
adapt faster, and stay relentlessly focused on outcomes that move the business needle while keeping code
quality and team morale high.

TECH STACK

Backend
Node .js · Bun · TypeScript · Deno · tRPC · Fastify v4 · Express · NestJS · Koa · REST / GraphQL / gRPC /
WebSockets · Edge Functions (Vercel / Cloudflare) · PostgreSQL / TimescaleDB · MongoDB · Redis · PlanetScale
(Vitess) · Neon · Turso (libSQL) · Supabase · Drizzle ORM · Prisma · Zod · RabbitMQ · NATS · Kafka · Event Store ·
Docker · OpenTelemetry

Frontend
React 18 / Server Components · Next .js 14 · Remix · Svelte / SvelteKit · SolidStart · React Native · TypeScript · Vite
· TanStack Query · Redux Toolkit · Zustand · tRPC client · Material UI · Ant Design · shadcn/ui · Radix UI · Tailwind
CSS · UnoCSS · Storybook 7 · Playwright Component Testing · Feature-Sliced Design

DevOps
Linux / Ubuntu · Docker / docker-compose · Kubernetes / K3s · Helm · Terraform · Pulumi · AWS (EC2, Lambda,
ECS Fargate, RDS, S3) · AWS CDK / CDKTF · Fly.io · Render · Railway · GitHub Actions · GitLab CI/CD · Argo CD ·
Crossplane · Cloudflare DNS / Workers / Pages · Nginx · Caddy · Grafana Loki / Tempo · Prometheus · Doppler
(secrets) · n8n

AQA / Testing
Playwright · Cypress · Jest · ESLint · Prettier · SonarQube / SonarCloud · GitHub Actions CI coverage gates

EDUCATION

Master of Science (ongoing) – Software Engineering, speciality 121, National Transport University (NTU), Kyiv.
Studies started in September 2024; expected completion — winter 2026.

Bachelor of Science – Software Engineering, speciality 121, National Aviation University (NAU), Kyiv. Studied from
September 2020 to June 2024.

WORK HISTORY

Full-Stack JavaScript Developer — ZenbitTech (outstaff / outsource)
Feb 2022 – Oct 2023
Drove end-to-end feature delivery across several green-field and legacy web platforms; introduced
streamlined CI pipelines and modern coding standards.
Radiance – built a secure patient-registration & scheduling backend (Node + NestJS + PostgreSQL) and
responsive UI; implemented RBAC and audit trails.
AvisonYoung Datum – led backend for a global real-estate analytics suite: crafted complex SQL procedures,
data-viz APIs, and a lease-monitoring engine; coordinated SQL, design, and product teams.

Full-Stack JavaScript Developer — IQusion (product)
Apr 2023 – Oct 2023
Worked on UIM (RMS/EDRMS over UnityBase): authored REST & file-storage APIs, hardened security, and
refined UX components in React; ensured smooth document life-cycle from capture to archive.
Supported large monorepo, mentoring peers on TypeScript best practices and automated test coverage
(Cypress + Playwright).

Full-Stack JavaScript Developer — Everget (outstaff / outsource)
Oct 2023 – Feb 2024
Core contributor to Mabel Insight, a free investment-analysis platform: optimized multi-GB data pipelines
(Redis & indexed Postgres), integrated Intelliflo and email services, and pushed Lighthouse performance to
90 +.
Built caching layers, automated DB replication scripts, and collaborated tightly with QA, design, and product
to hit fortnightly release targets.

Backend / Full-Stack Engineer — Kiss My Apps (startup / product)
Mar 2024 – Apr 2025
Acting as a roaming backend unit inside several mobile-first teams: spinning up new services from scratch,
hardening existing ones, and wiring CI/CD on Fly.io & AWS. Key products:
Botan App – serverless API that lets users scan a plant, identifies species via ML model, and schedules
tailored care reminders; built rapid image-upload pipeline and push-notification engine.
Meal Mentor / Counter Calories – nutrition app that tracks meals, counts macros & calories, and syncs with
wearables; delivered GraphQL gateway, real-time charts, and background cron workers for daily goal
summaries.
“eЗараз” – microservice powering an affirmations & mindfulness app; implemented content-delivery
backend, subscription billing with Stripe, and A/B testing harness for affirmation packs.
Across these projects:
Wrote NestJS + Prisma services, integrated OpenAI & DeepSeek APIs for smart recommendations, and
automated regression tests with Playwright.
Jumped between squads to unblock releases, set up n8n workflows for marketing automation, and
maintained observability stack (OpenTelemetry → Grafana).

Full-Stack JavaScript Developer — Line Up (outsourcing / product)
Jan 2025 – Present
Contributing to Mawgif — a large-scale parking management platform. Involved in both backend and frontend
development: building new API endpoints, implementing UI updates, and maintaining automated tests. Took part
in DevOps operations — containerization, observability, and release pipelines. Handled AWS infrastructure
provisioning with Terraform, set up monitoring and distributed tracing with OpenTelemetry, and maintained
CI/CD workflows. Tech stack: NestJS, React, Next.js, Docker, Kubernetes, Terraform, AWS, OVH, Playwright.

Full-Stack Developer — Elementica (outsourcing)
Jul 2025 – Present
Working across multiple fintech and media projects as a full-stack and DevOps engineer. Key products: Bithub
Parser – instant news and listing tracker for a South Korean crypto exchange; designed a lightweight Node.js +
Puppeteer parser, containerized with Docker, and automated deployments. PRAI – journalism intelligence and
discovery platform; delivered core API logic on NestJS + Redis, integrated OpenAI-powered content analysis, and
built frontend with Next.js. Oversaw Azure-based deployments using Azure Container Registry, Azure App
Service, and Web Apps, focusing on delivery speed and reliability across environments.