Oleksandr Iastreb

AI/ML • 42 years • Leipzig, Germany • UTC+01:00 • Work permits: Germany • English: B1 • Available in 2 weeks

Full Stack Developer

11+ years exp

JavaScript

Node JS

TypeScript

Bash

C++

MATLAB

Python

SQL

PHP

Active 1 day ago

+49 (155) 60519153

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Overview

Technical skills

Timeline

Roles

Overview

Full Stack Developer with 10+ years of hands-on development experience spanning C# desktop applications and PHP-based e-commerce solutions, plus modern JavaScript full-stack work. Has professional experience building and testing distributed web applications using Next.js, NestJS, PostgreSQL, Docker, and JWT authentication with Bcrypt. Holds an M.Sc. in Applied Mathematics and Computer Science and has built financial/market data analysis tools and trading-related software.

Technical skills

JavaScript

Node JS

TypeScript

Bash

C++

MATLAB

Python

SQL

C#• 11y+

PHP• Junior • 8y+

Node JS

Axios

Prisma

Bcrypt

Nest.JS

PHP

WordPress• 8y+

Databases

MySQL• 8y+

PostgreSQL

Supabase

Frontend

Formik

React Hook Form

React.js

Tailwind CSS

Zod

PostCSS

Next.js

DevOps

Git

Docker

Rest API

Postman

Jest

Timeline

Full Stack Developer • Middle

UpTeam GmbH • Full-Time

Jan 2025 to Present 1 Year 7 Months Berlin In office

Contributed to agile development of distributed web applications using Next.js and NestJS with PostgreSQL. Participated in architecture decisions, REST API design, infrastructure maintenance, and product testing. Worked on a car-sharing P2P platform and handled database migrations with Drizzle ORM and local development/deployment with Docker. Implemented JWT authentication with Bcrypt hashing and added Jest unit tests for core business logic.

Next.js

Nest.JS

PostgreSQL

Docker

Bcrypt

Jest

Supabase

Rest API

P2P car-sharing

Website

Jan 2026 to May 2026 4 Months

Web Developer • Middle

WebbyLab • Full-Time

Jan 2018 to Jan 2022 4 Years Kyiv In office

Developed and maintained PHP-based websites and e-commerce platforms using WordPress and OpenCart, including custom themes/plugins and payment integrations. Delivered client-facing features by gathering requirements and aligning implementations to business needs. Designed and optimized MySQL database schemas for e-commerce projects and integrated third-party payment and shipping services to support reliable checkout flows.

PHP

WordPress

MySQL

C# Software Developer • Middle

Developex • Full-Time

Jan 2015 to Jan 2018 3 Years In office

Built custom desktop applications in C# for business clients from requirements analysis through implementation and delivery. Developed Windows-based solutions focused on performance, usability, and maintainability. Maintained and extended existing C# codebases by fixing defects and improving stability for production releases.