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freiberufler Senior Full Stack Engineer auf freelance.de

Senior Full Stack Engineer

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  • auf Anfrage
  • 51503 Rösrath
  • Europa
  • mk  |  en
  • 18.04.2025
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Kurzvorstellung

I'm a senior full stack freelancer with over 12 years of experience building scalable web and mobile applications. I specialize in modern technologies like Node.js, React, TypeScript, Angular, and React Native, GraphQL etc.

Qualifikationen

  • Android5 J.
  • Angular4 J.
  • Docker6 J.
  • Graphql6 J.
  • iOS5 J.
  • JavaScript
  • Mongodb2 J.
  • Node.Js11 J.
  • Postgresql3 J.
  • Python4 J.
  • React (JavaScript library)4 J.
  • Typescript7 J.

Projekt‐ & Berufserfahrung

Senior Software Engineer
Walby App - drop2space GmbH, Köln
3/2023 – offen (2 Jahre, 3 Monate)
IT & Entwicklung
Tätigkeitszeitraum

3/2023 – offen

Tätigkeitsbeschreibung

- Implementing and maintaining the backend services and
APIs with Python, Node and PostgreSQL
- Implementing and leading the GraphQL client facing system
with NodeJS, Express and Typescript
- Writing unit, integration and end2end tests for the backend
systems with Jest
- Creating B2B admin CRM platform with React, Typescript,
GraphQL
- Complementing the DevOps team with CI/CD scripts in bash,
gitlab CI, docker and Kubernetes.

Eingesetzte Qualifikationen

Graphql, Postgresql, Docker, Node.Js, Python, Typescript, Amazon Web Services (AWS), React (JavaScript library)

Software Architect
BrilliantBlocks UG, Köln
4/2022 – 12/2022 (9 Monate)
IT & Entwicklung
Tätigkeitszeitraum

4/2022 – 12/2022

Tätigkeitsbeschreibung

- Lead a team that created an admin dashboard for managing
Smart Contracts with React and web3;
- Lead a team that created full NFT Marketplace in Starknet
for trading NFTs and creating Pools like sudoswap;
- Technologies used mainly were React, Redux, NextJS,
GraphQL and Web3 with Solidity;

Eingesetzte Qualifikationen

Solidity, Graphql, Node.Js, React (JavaScript library)

Senior Full Stack Engineer
DCCS GmbH, Köln
2/2022 – 1/2023 (1 Jahr)
IT & Entwicklung
Tätigkeitszeitraum

2/2022 – 1/2023

Tätigkeitsbeschreibung

- Full Stack Solution in Angular and Node for their client
Daimler Truck AT.
- Full Stack Solution in React and Node for their healthcare
client KAges Austria. Designed API with FHIR Protocol.
- React Solution for their client Mercedes Benz AT for a CRM
tool used to track finances.
- React Solution for their client Intersport Austria, improving
their e-commerce platform.
- Created a system for scheduling and sending emails to
customers, integrated in Java and NodeJS systems.
- Technologies used React, NextJS, NestJS, NodeJS, Java,
Typescript, Angular, MySQL, PostgreSQL, Docker etc.

Eingesetzte Qualifikationen

Mongodb, Mysql, Postgresql, C#, Docker, Java (allg.), Node.Js, Typescript, Angular, React (JavaScript library)

Software Architect
Famobi GmbH, Köln
10/2020 – 4/2021 (7 Monate)
IT & Entwicklung
Tätigkeitszeitraum

10/2020 – 4/2021

Tätigkeitsbeschreibung

- Refactored and improved their existing MVP;
- Helped them by designing a better Architecture in Firebase;
- Created an event-based collection of games in React Native;
- Technologies used mainly iOS, Android, React Native,
Firebase, GCP, Bash;

Eingesetzte Qualifikationen

Bash Shell, Typescript, Android, iOS, React (JavaScript library), React Native

Senior Full Stack Engineer
MediaMarktSaturn, Köln
9/2020 – 6/2022 (1 Jahr, 10 Monate)
IT & Entwicklung
Tätigkeitszeitraum

9/2020 – 6/2022

Tätigkeitsbeschreibung

- Designed a microservices based architecture in Node;
- Improved their React pages and GraphQL API gateway;
- Designed real-time streaming for microservices with
PubSub;
- Technologies used mainly React, NextJS, NestJS, NodeJS,
Typescript, GraphQL, GCP, Terraform, Kubernetes, Docker
etc;

Eingesetzte Qualifikationen

Graphql, Docker, Node.Js, Typescript, Google Cloud, Amazon Web Services (AWS)

Senior Full Stack Engineer
X-Rite Pantone, Köln
4/2019 – 4/2020 (1 Jahr, 1 Monat)
IT & Entwicklung
Tätigkeitszeitraum

4/2019 – 4/2020

Tätigkeitsbeschreibung

- Created full System Architecture for the NodeJS services;
- Created a complex CRM web app with React, Redux;
- Prepared Docker containers for deployment and CI/CD;
- Technologies used mainly NodeJS, Typescript, React,
GraphQL, MongoDB, WebSockets, AWS, Docker.

Eingesetzte Qualifikationen

Graphql, Mongodb, Docker, Node.Js, Typescript, Amazon Web Services (AWS), React (JavaScript library)

Senior Full Stack Engineer
Freeyou AG, Köln
6/2018 – 4/2019 (11 Monate)
IT & Entwicklung
Tätigkeitszeitraum

6/2018 – 4/2019

Tätigkeitsbeschreibung

- Moved the whole solution into microservices with Lambda
- Created the architecture and infrastructure from scratch
- Refactored 90% of their whole solution with cleaner code
- Technologies used mainly Angular, Typescript, NodeJS, AWS,
Lambda, AppSync, MySQL.

Eingesetzte Qualifikationen

Mysql, Node.Js, Typescript, Amazon Web Services (AWS), Angular

Senior Full Stack Engineer
Okomo, Zürich
12/2017 – 10/2018 (11 Monate)
IT & Entwicklung
Tätigkeitszeitraum

12/2017 – 10/2018

Tätigkeitsbeschreibung

- Designed Okomo's server and database architecture;
- Built the REST API and other services with NodeJS;
- Created 3 different Angular web solutions with WebRTC;
- Technologies used mainly NodeJS, Typescript, Angular,
GraphQL, Docker etc.

Eingesetzte Qualifikationen

Graphql, Docker, Node.Js, Typescript, Microsoft Azure, Amazon Web Services (AWS), Angular

Senior Software Engineer (Festanstellung)
CodeChem, Skopje
8/2015 – 8/2017 (2 Jahre, 1 Monat)
IT & Entwicklung
Tätigkeitszeitraum

8/2015 – 8/2017

Tätigkeitsbeschreibung

- As a full stack engineer maintained and improved their client
Mediawire mobile apps and backend systems.
- Created a system for annotating and optimizing PDFs
dynamically with customizations and multimedia.
- Created mobile application for scanning and managing
package deliveries for their client DICOM.
- Migrated an existing system from AngularJS into Angular 2
for one of their clients.
- Mentored and helped a team of developers and interns.
- Technologies used mainly C#, Xamarin, iOS, Android, Swift,
Java, NodeJS, Angular, Python, AWS.

Eingesetzte Qualifikationen

C#, Java (allg.), Node.Js, Python, Swift (Programmiersprache), Xamarin, Android, iOS, Amazon Web Services (AWS), Angular

Full Stack Engineer
Upwork, Skopje
1/2013 – 5/2015 (2 Jahre, 5 Monate)
IT & Entwicklung
Tätigkeitszeitraum

1/2013 – 5/2015

Tätigkeitsbeschreibung

Successfully finished 12 full stack projects on Upwork during
period of two years.
Worked with Java, C#, Android, iOS, AngularJS, NodeJS, PHP,
MySQL.

Eingesetzte Qualifikationen

Mysql, C#, Java (allg.), Node.Js, Android, iOS, AngularJS

Weitere Projekt‐ & Berufserfahrung anzeigen

Zertifikate

Xamarin-certified Mobile developer
2016

Ausbildung

Computer Science and Engineering
Computer Science and Engineering
2016
FCSE in Skopje, Macedonia
High School - Natural Sciences and Mathematics
Ausbildung
2012
Dobri Daskalov in Kavadarci, Macedonia

Über mich

I'm a senior full stack freelancer with over 12 years of experience building scalable web and mobile applications. I specialize in modern technologies like Node.js, React, TypeScript, Angular, and React Native, and I have deep expertise in GraphQL, AWS, PostgreSQL, and MongoDB. From startups to enterprise-level projects, I’ve led end-to-end development with a focus on performance, clean architecture, and user-centric design.

Persönliche Daten

Sprache
  • Mazedonisch (Muttersprache)
  • Englisch (Fließend)
Reisebereitschaft
Europa
Arbeitserlaubnis
  • Europäische Union
  • Schweiz
  • Vereinigte Staaten von Amerika
Home-Office
bevorzugt
Profilaufrufe
2140
Alter
31
Berufserfahrung
12 Jahre und 4 Monate (seit 01/2013)

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