Sergej Melihov - Full Stack Developer

Q: Where is Sergej based?

Sergej is based in Florina, Greece and prefers 100% remote projects.

Q: What languages does Sergej speak?

Sergej speaks the following languages: Greek (Intermediate), English (Intermediate), German (Elementary) .

Q: How many years of experience does Sergej have?

Sergej has at least 9 years of experience. During this time, Sergej has worked in at least 1 role and for 3 different companies . The average length of individual experience is 3 years and 1 month . Note that Sergej may not have shared all experience and actually has more experience.

Q: What is Sergej's latest experience?

Sergej's most recent position is Full Stack Developer at NERDZZ Digitalagentur GmbH .

Q: What companies has Sergej worked for in recent years?

In recent years, Sergej has worked for NERDZZ Digitalagentur GmbH and Kilwar LLC .

Q: Which industries is Sergej most experienced in?

Sergej is most experienced in industries like Information Technology , Retail , and Real Estate .

Q: Which business areas is Sergej most experienced in?

Sergej is most experienced in business areas like Information Technology , Product Development , and Quality Assurance . Sergej also has some experience in Project Management .

Q: Which industries has Sergej worked in recently?

Sergej has recently worked in industries like Information Technology and Real Estate .

Q: Which business areas has Sergej worked in recently?

Sergej has recently worked in business areas like Information Technology , Product Development , and Quality Assurance .

Recommended expert

Florina, Greece

Experience

Jun 2021 - Feb 2023

1 year 9 months

Hanover, Germany

Full Stack Developer

NERDZZ Digitalagentur GmbH

Built full-stack applications using the MERN stack for urban planning and real estate projects.
Developed custom dashboards with React and chart libraries (Recharts, D3.js).
Created RESTful APIs with Express and Node.js, and stored data in MongoDB.
Led the team’s adoption of Agile, improving sprint delivery and collaboration.

Nov 2020 - Jun 2025

4 years 8 months

United States

Full Stack Developer

Kilwar LLC

Developed and maintained interactive React applications for geospatial data visualization.
Built reusable UI components with React, integrated REST APIs with Axios and Redux.
Improved performance of data-heavy components, reducing load times by 30%.
Implemented end-to-end testing using Cypress.
Worked closely with backend and DevOps teams to deploy microservices and enhance system scalability.

Aug 2015 - Mar 2020

4 years 8 months

Full Stack Developer

The MASCC

Built and maintained e-commerce platforms using React, Vue, and Node.js.
Integrated 3rd-party APIs (Stripe, Google Maps, SendGrid) and built internal APIs.
Designed MySQL and MongoDB schemas for scalable storage.
Enhanced frontend SEO and accessibility performance.
Worked on the admin dashboard for real-time order and user management.

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Information Technology, Retail, and Real Estate.

Information Technology

Retail

Real Estate

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Product Development, Quality Assurance, and Project Management.

Information Technology

Product Development

Quality Assurance

Project Management

Summary

Senior MERN Stack Developer with 8+ years of experience in full-stack web development, with a strong focus on JavaScript-based technologies including MongoDB, Express.js, React.js, and Node.js. Skilled in designing and building responsive, scalable applications and complex REST APIs. Excellent communication and teamwork skills, experienced in agile environments and passionate about delivering high-quality software solutions.

Skills

Frontend: React.js, Redux, Next.js, Vue.js, Html5, Css3, Tailwind Css, Bootstrap, Material Ui
Backend: Node.js, Express.js, Restful Apis, Socket.io, Jwt Auth
Database: Mongodb, Mongoose, Mysql, Postgresql
Devops & Tools: Git, Github, Docker, Jenkins, Nginx, Pm2, Vercel, Netlify
Testing & Debugging: Jest, Mocha, Cypress, Postman
Other: Agile, Scrum, Jira, Figma, Rest Api, Websocket, Typescript

Languages

Greek

Intermediate

English

Intermediate

German

Elementary

Education

Apr 2011 - Aug 2015

University of Peloponnese

Bachelor of Software Engineering · Computer Science · Tripoli, Greece

Certifications & licenses

Triplebyte Engineering Certificate

Triplebyte

Statistics

Experience

Total positions 3

Experience in Information Technology 9 y

Avg length 3 y 7 m

Longest experience 4 y 7 m

Global Experience

Countries worked in 2 (Germany, United States)

Primary country Germany

Expertise

Recent roles Full Stack Developer

Main industries Information Technology, Retail, Real Estate

Main business areas Information Technology, Product Development, Quality Assurance

Qualifications

Highest degree Bachelor

Certifications earned 1

Profile

Created

October 2025

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Sergej based?

Sergej is based in Florina, Greece and prefers 100% remote projects.

What languages does Sergej speak?

Sergej speaks the following languages: Greek (Intermediate), English (Intermediate), German (Elementary).

How many years of experience does Sergej have?

Sergej has at least 9 years of experience. During this time, Sergej has worked in at least 1 role and for 3 different companies. The average length of individual experience is 3 years and 1 month. Note that Sergej may not have shared all experience and actually has more experience.

What roles would Sergej be best suited for?

Based on recent experience, Sergej would be well-suited for roles such as: Full Stack Developer.

What is Sergej's latest experience?

Sergej's most recent position is Full Stack Developer at NERDZZ Digitalagentur GmbH.

What companies has Sergej worked for in recent years?

In recent years, Sergej has worked for NERDZZ Digitalagentur GmbH and Kilwar LLC.

Which industries is Sergej most experienced in?

Sergej is most experienced in industries like Information Technology, Retail, and Real Estate.

Which business areas is Sergej most experienced in?

Sergej is most experienced in business areas like Information Technology, Product Development, and Quality Assurance. Sergej also has some experience in Project Management.

Which industries has Sergej worked in recently?

Sergej has recently worked in industries like Information Technology and Real Estate.

Which business areas has Sergej worked in recently?

Sergej has recently worked in business areas like Information Technology, Product Development, and Quality Assurance.

What is Sergej's education?

Sergej holds a Bachelor in Computer Science from University of Peloponnese.

Does Sergej have any certificates?

Sergej has 1 certificate: Triplebyte Engineering Certificate.

What is the availability of Sergej?

Sergej is immediately available for suitable projects.

What is the rate of Sergej?

Sergej's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.