Denis

Denis Saveliev
Full-stack Developer · Frontend Engineer
Junior Full-stack Developer with 1.5+ years of experience (commercial + freelance).
Delivered 256 commits to a production NX monorepo e-commerce platform.
Independently shipped Chrome/Firefox MV3 extensions, a full-stack property platform
Denis Saveliev (Angular SSR + NestJS + PostgreSQL), and a published npm UI library. Active user of
Claude & Gemini AI to accelerate delivery.
FULL-STACK DEVELOPER

EXPERIENCE

C O N TA C T WarmSoft 12/2024 – 08/2025

[відкрити контакти](див. вище в блоці «контактна інформація») Junior Full-stack Developer
▸ Delivered 256 commits to a production NX monorepo (storefront + admin panel, 91
[відкрити контакти](див. вище в блоці «контактна інформація»)
Angular components, 624 TS files).
github.com/DenHelloWorld ▸ Built modules for products, variants, orders, inventory, media & users with AG Grid tables.

digital-zen.csmpoint.com ▸ Implemented Firebase real-time sync, Chart.js dashboards, Transloco i18n (EN/TH),

promptpay-qr payments.
▸ Participated in code reviews focused on modular NX library architecture.
CORE SKILLS
Freelance / Personal Projects 08/2025 – Present
React 19 ●●●●○
Full-stack Developer
Angular 16–22 ●●●●○ ▸ Independently delivered a full-stack property platform (50 commits): Angular SSR +
NestJS 11 + Prisma + PostgreSQL + NX + Playwright E2E, JWT auth, reactive paginated
TypeScript ●●●●○
tables, CDK Overlay tooltips, i18n EN/RU/UK/ES.
▸ Shipped digital-zen-serp (64 commits): Angular 21 zoneless SEO extension —
RxJS ●●●○○
PageSpeed/Web Vitals, schema markup, social preview simulator for 6 platforms.
NX Monorepo ●●●●○ ▸ Shipped digital-zen-extension (58 commits, 235 files): Pomodoro, focus modes, 100+ site
library, Google OAuth. Live at digital-zen.csmpoint.com
SCSS / Tailwind ●●●●○
▸ Built Swagger/OpenAPI editor 4AMTeaClub (32 commits): Next.js App Router, React 19,

Redux Toolkit, Zustand, shadcn/ui, REST client capabilities.
NestJS / PostgreSQL ●●●○○
KEY PROJECTS
Prisma / JWT Auth ●●●○○

property digital-zen-serp
Angular SSR · NestJS 11 · Prisma · Angular 21 · MV3 · Tailwind v4 · zoneless
ALSO KNOW
PostgreSQL · NX SEO Chrome extension: PageSpeed, Web
Next.js Redux / TanStack Query Full-stack property platform: JWT Vitals, schema markup validator, social
auth, reactive paginated tables, CDK previews
Signals SSR Chrome MV3 Overlay, i18n EN/RU/UK/ES, (FB/LinkedIn/Twitter/Pinterest/Telegram/Slack),
AG Grid Firebase Docker Playwright E2E. content analysis.
github.com/DenHelloWorld/fullstack- github.com/DenHelloWorld/digital-zen-serp
Playwright Vitest GitHub Actions
template
Storybook Google OAuth

PageSpeed API digital-zen-extension 4AMTeaClub
Angular 21 · MV3 · Signals · Next.js App Router · React 19 · Redux Toolkit ·
Chrome/Firefox Zustand
AI TOOLS Focus modes, Pomodoro timer, 100+ Swagger/OpenAPI editor with REST client
site blocking library, Google OAuth. capabilities, built with shadcn/ui.
Claude Gemini OpenAI Qwen Dual Chrome/Firefox build. github.com/DenHelloWorld/swagger-editor-app
Ollama opencode github.com/DenHelloWorld/digital-zen

E D U C AT I O N
LANGUAGES
RS School — React 2026 Q2 — certificate 04/2026 – 07/2026
English B2
RS School — Node.js 2024 Q3 — certificate 10/2024 – 12/2024
Ukrainian Native
RS School — Angular 2024 Q3 — certificate 08/2024 – 10/2024
Russian Native
RS School — JavaScript / Front-end 2023 Q4 — certificate 12/2023 – 07/2024

Anthropic Education — Claude Code 101 — certificate 05/2026