Ivan Savitskiy

Detail-oriented Full Stack Engineer dedicated to building high-quality products.

Krakow, Poland, CET

LinkedIn
IS

About

As a Full Stack / Frontend Developer, I specialize in taking products from concept to launch. I excel in leading teams and creating environments where individuals perform at their best. Currently, I work mostly with TypeScript, React and React-Native, Node.js, and GraphQL. I have over 6 years of experience working remotely with companies worldwide.

Work Experience

Intend
React.js
Rest API
Redux ToolKit

jan. 2019 - mar. 2021

Software Developer

- Participate in development of mobile and web app to control your greenhoust crops - Developed on React/React-native, axios, rtk query, mui - Writing e2e test on Express - Worked in big team 20 people - Studying how to developed process, looks like etc

Hygge Software
React.js
Node.js
RTK Query
MobX
Styled Components

mar. 2021 - oct. 2022

Software Engineer

- Outsource Ukraine team - We developed a specific employee portal, which have been connected with 2 versions. Web version (React.js/React-native, Redux Saga, Styled components). I've been working on 2 appliaction Web and Mob - Developed a E-commerce platform on (React.js, RTK Query, Styled components, MUI) this platform provide the feature for sellers to collect the big order in one - Helped in code reviewing - Writing helps docs for projects - Worked in different teams from 2-5 to 10-15 people

Company {NDA}
Remote

oct. 2022 - jan. 2026

Senior Full-Stack Engineer

Outsource company private company from Ukraine

Projects:

Project ask for 2 years non declaration
AWS
Lambda
WSS
TypeScript
React.js
Python
Nest.js
PSQL
mar. 2025 - jan. 2026
Senior Full-Stack Engineer
- We've developed, a crypto trading platform - Development live-time and historical, crypto data receiving on the platform, which helps to make analyzis about your trade flow - Provided an optimized Frontend application, with receive realtime data via WebSocket - Refactored backend authorisation, for more optimized solution - Recreated/Refactored new DTO models and also PSQL - Created PWA application, Redesigned all Frontend apps
Masons Traffic
AI
Nest.js
Vue.js
React.js
TypeScript
VPS
mar. 2025 - oct. 2025
Senior Full-Stack Engineer
- Designed and optimized high-conversion landing pages and promotional assets tailored for gambling traffic funnels. - Built custom automation scripts and tools to streamline daily campaign management and reporting. - Coordinated with cross-functional teams on scaling paid traffic channels and audience targeting strategies. - Integrated third-party libraries and APIs to expand platform functionality and improve system interoperability. - Developed and maintained Progressive Web App (PWA) solutions to support business operations and client services. - Ensured compliance with platform policies and adapted creatives to regional advertising regulations.
Equanima
Nest.js
TypeScript
AWS
GitHub Actions
CI/CD
mar. 2025 - may. 2025
Senior Software Engineer
- Led the release process for new versions of our mobile applications on the App Store and Google Play, ensuring smooth rollouts and version management. - Spearheaded the migration of our backend services from AWS Amplify (Lambda, API Gateway, etc.) to a robust Nest.js application, improving scalability and maintainability. - Developed and implemented GitHub Actions pipelines to automate deployments to development and production environments, streamlining CI/CD processes. - Led a team of 4 engineers, coordinating development efforts and ensuring high code quality through code reviews and agile practices. - Actively participated in the hiring and interview process, helping to build a strong and collaborative engineering team. - Collaborated cross-functionally with design, product teams to deliver new features and enhancements efficiently.
Kozak agency
React.js
TypeScript
RTK Query
MUI
WebRTC
aug. 2024 - mar. 2025
Senior Front-end Developer
Project focused on developing a application for communication and collaboration directly in browser. The team consisted of 10+ professionals working together to create a high-performance, user-friendly platform. Main responsibilities included enhancing and optimizing the UI, as well as improving accessibility to ensure an inclusive user experience. I worked on refining the design, optimizing performance, and implementing accessibility best practices. Tech Stack:React.js, TypeScript, RTK Query, MUI.
Insoftex
Python
AWS
TypeScript
Node.js
PostgreSQL
jan. 2024 - dec. 2024
Full Stack Developer
Outsource project to build ur own tools and other. Technologies: React, TypeScript, Node.js, Python, Angular
OnePage
React.js
TypeScript
Node.js
Redux
Nest.js
mar. 2023 - jun. 2023
Full Stack Developer
A tool that helps you build and maintain Websites, Landing-pages, Mobile Linktrees, and Quizzes remarkably fast, all with one tool. It's built for Agencies & Businesses. Technologies: React, TypeScript, Node.js, Redux
Intel
React.js
TypeScript
Node.js
PostgreSQL
oct. 2022 - jan. 2023
Frontend Developer
Platform for searching and ordering equipment for education process in a large amount. Technologies: React, TypeScript, Node.js, Python

Education

Kyiv Polytechnika

2019 - 2021
Bachelor's Degree in Control engineering systems

Skills

Nest.js
GitHub Actions (CI/CD)
Docker
WebSocket
Team Leading
C#
JavaScript
AWS (Lamda, EC2 instances, API Gateway)
GCP
TypeScript
React/Next.js/Remix
Angular 2.X
React-Native
Node.js
GraphQL
PostgreSQL
Python
WebRTC

Projects

OnePage

The tool for the building your own websites

Full Stack Developer
TypeScript
React
Node.js
GraphQL

Intel

A CRM system to help educational system to upgrade their education system

Frontend Developer
TypeScript
React
Next.JS
GraphQL

Fulcrum

A platform to find or sold ur business

TypeScript
Python
Linux
GraphQL
WebRTC

SunSniffer

Application for company to build, analyze solar system

TypeScript
Next.js
Redux
AWS
Angular

InPass

InPass is an electronic system for managing and controlling temporary visitor passes in residential complexes or business centers.

Next.js
ReactNative
TypeScript
AWS

Biomonitoring

Convenient control of greenhouse crops using a smartphone or tablet.

Next.js
ReactNative
Redux
AWS

TeamTracker

Linked CRM system with your computer and phone, in which you can control team statistics

FireBase
TypeScript
React

Expense Tracker

Expense Tracker with Real-Time Collaboration and Goal Setting

ReactNative
React
TypeScript
Redux

CommunityConnect

A platform for connecting with communities you care about

Front-end Developer
React
Redux

ContactShare

A web application that helps with sharing your contact details

React
TypeScript