Dmytro Syniak

My Pet Projects

Financial Planner

A comprehensive, responsive solution for managing personal finances. Beyond tracking flows across digital wallets and cash, the app integrates complex logic for credit management, including automated alerts for upcoming and overdue payments. It also features a goal-setting engine that calculates required savings rates. The user experience is enhanced by fluid animations and a main dashboard that visualizes financial health through detailed charts

Core Technologies:

React

TypeScript

Nest.js

PostgreSQL

Prisma

Redux Toolkit

Tanstack Query

Tailwind CSS

Shadcn/UI

Recharts

Zod

SSE (Server-Sent Events)

i18n

Passport

JWT

Argon2

Decimal.js

View Demo

Modern Pokédex

A high-performance, interactive Pokédex application designed with a sharp focus on UI/UX. It goes beyond standard API data by presenting exclusive insights and detailed statistics for each Pokémon. Users can explore complex evolutionary chains through a seamless interface. The project demonstrates advanced frontend techniques, featuring fluid animations and a fully responsive layout built with Next.js

Core Technologies:

Next.js

React

TypeScript

Tailwind CSS

Xata.io

PokéAPI

View Demo

Portfolio Website

A custom-built personal portfolio designed to showcase professional experience and technical expertise. Developed from the ground up using Next.js, the site prioritizes high performance and SEO optimization. The user interface is enhanced with fluid, physics-based animations powered by Framer Motion, delivering a polished and engaging interactive experience

Core Technologies:

Next.js

React

TypeScript

Framer Motion

Tailwind CSS

i18n

View Demo

Work Experience

Full-Stack Engineer (High-Load Systems)

Consulting for AdTech & Digital Marketing Agencies (NDA)

January 2023 – December 2025 | Remote•2 years 11 months

Developed and optimized a distributed SaaS platform for automating digital asset management across multiple social media platforms. The system handles 400+ concurrent complex workflows, ensuring high availability and reliable integration with third-party services.

Key Technical Contributions:

Infrastructure Automation: Implemented a cost-efficient container management system based on Docker Engine API running on Linux bare metal servers. This allowed granular control over 400+ isolated containers and eliminated the overhead of complex orchestration tools.
Performance Optimization: Migrated the core automation logic from resource-heavy browser automation to a lightweight custom REST API client (Node.js). This reduced RAM consumption per thread by 90%, enabling the business to scale capacity 4x on the same hardware.
Flexible Logic Engine: Implemented a declarative execution engine that interprets JSON-based business scenarios. This enabled "hot-reload" of automation logic without code redeployment, allowing instant adaptation to updates in external APIs.
Reliable Async Processing: Built a robust background job processing system using Redis and BullMQ for stateful workflows. Designed a "Shared Resource" pattern for handling rate-limited integrations (SMS services, Network Gateways) with global throttling.
Control Plane: Developed a reactive Admin Dashboard (TypeScript, Next.js) with real-time monitoring via WebSockets, allowing operators to track the status of active threads and manage infrastructure health.

Core Tech Stack:

Docker

Docker Engine API

Next.js

TypeScript

Node.js

Nest.js

PostgreSQL

Prisma

Redis

BullMQ

Tanstack Query

WebSockets

REST APIs

Telegram Bot API

Due to non-disclosure agreements, specific client names and the proprietary nature of the algorithms are kept confidential.

Founder & Full-Stack Developer

E-commerce Platform for In-Game Digital Assets

February 2020 – December 2022 | Remote•2 years 10 months

Bootstrapped and developed a profitable e-commerce platform for digital gaming services. Managed the entire product lifecycle from initial MVP launch to scaling the system for 17,000+ customers.

Key Technical Contributions:

Full-Stack Architecture: Designed and implemented the system using Node.js (Express) and Vue.js, delivering a responsive SPA and scalable RESTful API.
Business Logic: Engineered commercial features including a customer cashback balance system and flexible promotional codes, which significantly increased customer retention.
Database Design: Designed a normalized relational schema in PostgreSQL to securely store user balances and transaction history, ensuring data integrity.
Payments & Security: Integrated secure payment gateways and designed reliable checkout flows, handling thousands of successful transactions.
Operational Tools: Developed a custom Telegram Bot serving as a real-time mobile admin interface for instant order alerts and operational control.

Core Tech Stack:

Vue.js

Vuex

Node.js

Express.js

PostgreSQL

Nodemailer

Payment Gateway Integration

REST APIs

Telegram Bot API

Google Analytics

Core Skills & Technologies

Core Frontend Technologies

TypeScript

React

Next.js

JavaScript (ES6+)

Tailwind CSS

HTML5 & CSS3

Vue.js

Framer Motion

Backend & Async Processing

Node.js

Nest.js

BullMQ (Message Queues)

WebSocket & Socket.IO

Express.js

Infrastructure & DevOps

Docker

Docker Engine API

Vercel

Linux (Bash)

CI/CD (GitLab/GitHub)

Databases & Storage

PostgreSQL

Redis

Prisma ORM

TypeORM

SQL Optimization

Architecture & Concepts

High-Load Systems

Microservices

System Design

SOLID & Clean Code

RESTful APIs

Feature-Sliced Design (FSD)

Essential Tools & Libs

Git & GitHub

Redux Toolkit

TanStack Query

Zod

React Hook Form

Telegram Bot API

Payment Gateways

JWT & Auth

Jest

Soft Skills & Professional Qualities

Problem-Solving

Teamwork & Collaboration

Strategic Thinking

Adaptability

Attention to Detail

Beyond these, I'm always keen to explore and adapt to new tools and frameworks as needed for the project.

Education & Certifications

Master's degree - Computer Software Engineering

Zhytomyr Polytechnic State University

September 2019 – December 2020 | Zhytomyr, Ukraine

Web Development Intensive Course - Viseven IT-Academy

Viseven

September 2019 – January 2020 | Zhytomyr, Ukraine (Offline in company office)

Achievement: Graduated #1 in the student ranking based on technical performance.
Outcome: Successfully passed the final assessment and received an immediate job offer.

Official Photo Album

Bachelor's degree - Computer Software Engineering

Zhytomyr Polytechnic State University

September 2017 – June 2019 | Zhytomyr, Ukraine

Professional Junior Bachelor - Software Development

Berdychiv Professional College of Industry, Economics and Law

September 2013 – June 2017 | Berdychiv, Ukraine

Work Experience

Full-Stack Engineer (High-Load Systems)

Consulting for AdTech & Digital Marketing Agencies (NDA)

January 2023 – December 2025 | Remote•2 years 11 months

Key Technical Contributions:

Infrastructure Automation: Implemented a cost-efficient container management system based on Docker Engine API running on Linux bare metal servers. This allowed granular control over 400+ isolated containers and eliminated the overhead of complex orchestration tools.
Performance Optimization: Migrated the core automation logic from resource-heavy browser automation to a lightweight custom REST API client (Node.js). This reduced RAM consumption per thread by 90%, enabling the business to scale capacity 4x on the same hardware.
Flexible Logic Engine: Implemented a declarative execution engine that interprets JSON-based business scenarios. This enabled "hot-reload" of automation logic without code redeployment, allowing instant adaptation to updates in external APIs.
Reliable Async Processing: Built a robust background job processing system using Redis and BullMQ for stateful workflows. Designed a "Shared Resource" pattern for handling rate-limited integrations (SMS services, Network Gateways) with global throttling.
Control Plane: Developed a reactive Admin Dashboard (TypeScript, Next.js) with real-time monitoring via WebSockets, allowing operators to track the status of active threads and manage infrastructure health.

Core Tech Stack:

Docker

Docker Engine API

Next.js

TypeScript

Node.js

Nest.js

PostgreSQL

Prisma

Redis

BullMQ

Tanstack Query

WebSockets

REST APIs

Telegram Bot API

Due to non-disclosure agreements, specific client names and the proprietary nature of the algorithms are kept confidential.

Founder & Full-Stack Developer

E-commerce Platform for In-Game Digital Assets

February 2020 – December 2022 | Remote•2 years 10 months

Bootstrapped and developed a profitable e-commerce platform for digital gaming services. Managed the entire product lifecycle from initial MVP launch to scaling the system for 17,000+ customers.

Key Technical Contributions:

Full-Stack Architecture: Designed and implemented the system using Node.js (Express) and Vue.js, delivering a responsive SPA and scalable RESTful API.
Business Logic: Engineered commercial features including a customer cashback balance system and flexible promotional codes, which significantly increased customer retention.
Database Design: Designed a normalized relational schema in PostgreSQL to securely store user balances and transaction history, ensuring data integrity.
Payments & Security: Integrated secure payment gateways and designed reliable checkout flows, handling thousands of successful transactions.
Operational Tools: Developed a custom Telegram Bot serving as a real-time mobile admin interface for instant order alerts and operational control.

Core Tech Stack:

Vue.js

Vuex

Node.js

Express.js

PostgreSQL

Nodemailer

Payment Gateway Integration

REST APIs

Telegram Bot API

Google Analytics

My Pet Projects

Financial Planner

Core Technologies:

Modern Pokédex

Core Technologies:

Portfolio Website

Core Technologies:

Work Experience

Full-Stack Engineer (High-Load Systems)

Key Technical Contributions:

Core Tech Stack:

Founder & Full-Stack Developer

Key Technical Contributions:

Core Tech Stack:

Core Skills & Technologies

Core Frontend Technologies

Backend & Async Processing

Infrastructure & DevOps

Databases & Storage

Architecture & Concepts

Essential Tools & Libs

Soft Skills & Professional Qualities

Education & Certifications

Master's degree - Computer Software Engineering

Web Development Intensive Course - Viseven IT-Academy

Bachelor's degree - Computer Software Engineering

Professional Junior Bachelor - Software Development

Get in Touch

My Pet Projects

Financial Planner

Core Technologies:

Modern Pokédex

Core Technologies:

Portfolio Website

Core Technologies:

Work Experience

Full-Stack Engineer (High-Load Systems)

Key Technical Contributions:

Core Tech Stack:

Founder & Full-Stack Developer

Key Technical Contributions:

Core Tech Stack:

Core Skills & Technologies

Core Frontend Technologies

Backend & Async Processing

Infrastructure & DevOps

Databases & Storage

Architecture & Concepts

Essential Tools & Libs

Soft Skills & Professional Qualities

Education & Certifications

Master's degree - Computer Software Engineering

Web Development Intensive Course - Viseven IT-Academy

Bachelor's degree - Computer Software Engineering

Professional Junior Bachelor - Software Development

Get in Touch