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Hi, I’m Aleksander Kostov. I have over 10 years of experience as a software developer, having worked in small startups, fast-growing scale-ups, and larger corporations. I’m passionate about everything JavaScript-related and have hands-on experience with most major frameworks such as React, Angular, Next, Vue, and Express. Beyond coding, I strive to be an active and engaged team member—communicating openly, taking ownership, and fostering a progressive work environment. I also lecture at Sofia University’s Faculty of Mathematics and Informatics, teaching Advanced JavaScript and JavaScript Frameworks. Teaching keeps me up to date with the latest tech, strengthens my mentoring skills, and enhances team collaboration and workflows. Currently, I’m part of a small company where my friends and I work as B2B contractors on various projects.…Hi, I’m Aleksander Kostov. I have over 10 years of experience as a software developer, having worked in small startups, fast-growing scale-ups, and larger corporations. I’m passionate about everything JavaScript-related and have hands-on experience with most major frameworks such as React, Angular, Next, Vue, and Express. Beyond coding, I strive to be an active and engaged team member—communicating openly, taking ownership, and fostering a progressive work environment. I also lecture at Sofia University’s Faculty of Mathematics and Informatics, teaching Advanced JavaScript and JavaScript Frameworks. Teaching keeps me up to date with the latest tech, strengthens my mentoring skills, and enhances team collaboration and workflows. Currently, I’m part of a small company where my friends and I work as B2B contractors on various projects.

Aleksandar Kostov

Web Developer, Front-End Developer, Back-End Developer, +2

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Hi, I’m Aleksander Kostov. I have over 10 years of experience as a software developer, having worked in small startups, fast-growing scale-ups, and larger corporations. I’m passionate about everything JavaScript-related and have hands-on experience with most major frameworks such as React, Angular, Next, Vue, and Express. Beyond coding, I strive to be an active and engaged team member—communicating openly, taking ownership, and fostering a progressive work environment. I also lecture at Sofia University’s Faculty of Mathematics and Informatics, teaching Advanced JavaScript and JavaScript Frameworks. Teaching keeps me up to date with the latest tech, strengthens my mentoring skills, and enhances team collaboration and workflows. Currently, I’m part of a small company where my friends and I work as B2B contractors on various projects.…Hi, I’m Aleksander Kostov. I have over 10 years of experience as a software developer, having worked in small startups, fast-growing scale-ups, and larger corporations. I’m passionate about everything JavaScript-related and have hands-on experience with most major frameworks such as React, Angular, Next, Vue, and Express. Beyond coding, I strive to be an active and engaged team member—communicating openly, taking ownership, and fostering a progressive work environment. I also lecture at Sofia University’s Faculty of Mathematics and Informatics, teaching Advanced JavaScript and JavaScript Frameworks. Teaching keeps me up to date with the latest tech, strengthens my mentoring skills, and enhances team collaboration and workflows. Currently, I’m part of a small company where my friends and I work as B2B contractors on various projects.

Available to hire

Hi, I’m Aleksander Kostov. I have over 10 years of experience as a software developer, having worked in small startups, fast-growing scale-ups, and larger corporations. I’m passionate about everything JavaScript-related and have hands-on experience with most major frameworks such as React, Angular, Next, Vue, and Express. Beyond coding, I strive to be an active and engaged team member—communicating openly, taking ownership, and fostering a progressive work environment.

I also lecture at Sofia University’s Faculty of Mathematics and Informatics, teaching Advanced JavaScript and JavaScript Frameworks. Teaching keeps me up to date with the latest tech, strengthens my mentoring skills, and enhances team collaboration and workflows. Currently, I’m part of a small company where my friends and I work as B2B contractors on various projects.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Bulgarian

Fluent

German

Intermediate

Russian

Beginner

Work Experience

Software Developer at Ilda Tek EOOD

October 1, 2018 - Present

A small contracting agency where I and a group of friends work as B2B contractors on various projects, collaborating with clients to deliver software across frontend and backend domains and contributing to architecture and delivery.

Senior Software Developer at Desk Booking Solution

October 1, 2024 - October 17, 2025

Senior Software Developer for a desk booking solution designed for hybrid work management. The project includes an admin panel for schedules, inventories and performance tracking, plus a mobile PWA to support in-office workflows. Responsibilities included setting up test frameworks, optimizing state management, and collaborating with product and design teams to drive progress.

Senior Software Developer at Remote (Contractor)

December 31, 2019 - October 17, 2025

Open-source Web3 project: a 3D content platform that combines AI and blockchain for interactive storytelling. Implemented login flow with crypto wallets, built the main world page with interactive features, and implemented staking workflows, along with client-side UI enhancements and feature testing.

Senior Software Developer at Remote (Contractor)

April 30, 2019 - October 17, 2025

Musician marketplace featuring audio streaming, payments, waveform generation, and complex service exchange flows. Built major client-facing interfaces, integrated backend features, and collaborated closely with clients to gather feedback and steer product development.

Web and Mobile Application Developer at Web Publishing House

January 31, 2017 - October 17, 2025

Developed multiple web and hybrid mobile applications using LAMP stack, ES6, and jQuery; created admin panels and responsive interfaces for a range of clients.