freiberufler Senior Full Stack Developer auf freelance.de

Senior Full Stack Developer

offline
  • auf Anfrage
  • 2450 København
  • Europa
  • en
  • 30.12.2023

Kurzvorstellung

Over 8 years of experience as a full stack Web Developer, oriented programming
knowledge and experience in developing Professional Web applications and
Enterprise solutions with complete SDLC.

Auszug Referenzen (2)

"I am open to collaborate with the other freelancers."
Sr. Full Stack Developer (Node JS / React JS)
Wei Jensen
Tätigkeitszeitraum

4/2021 – 5/2023

Tätigkeitsbeschreibung

Led and managed a team of 5 members, 3 front-end and 2 back-end developers.
Design, develop, and test an e-commerce site serving over 4000+ customers, increasing company revenue by 20% after half a year.
Applied Use Case diagrams to validate and test web application design against the UI architecture, reduced operational costs by 30%.
Using Node.js, Express.js and MySQL, built a scalable RESTful API that handles over 120 requests per second and cuts server costs by 25% with 99.8% uptime.
Built cloud native architecture using AWS Lambda, API Gateway, AWS Cloud Formation.
Worked in Agile Development and maintained effective communication in the team going through all phases of SDLC.

Eingesetzte Qualifikationen

Webservices

"W."
Full Stack Web Developer
Wei Jensen
Tätigkeitszeitraum

1/2019 – 2/2021

Tätigkeitsbeschreibung

Optimized database queries and schema design to improve the company's operational strategy, using MongoDB as the primary NoSQL database reduced query response time by 50%, resulting in a 2x increase in the company's supporters.
Implemented an authentication and authentication system using Nest.js and
Redis that improved secure users and experiences, increasing the number of
users logging in daily by more than 500+.
Using TypeScript, developed a scalable, web-based solution that analyzed management workflows, identified time-consuming processes, and customized them for individual departments, speeding up the company's work by 1.5x.
Wrote unit tests and E2E tests using Jest and cypress to ensure that the APIs were working as expected.

Eingesetzte Qualifikationen

Responsive Webdesign

Qualifikationen

  • AngularJS
  • Cypress
  • Full-Stack
  • Jest
  • Node.js
  • PHP
  • React (JavaScript library)
  • TypeScript
  • Vue.js
  • Webdesign

Projekt‐ & Berufserfahrung

Sr. Full Stack Developer (Node JS / React JS)
Tech Yard Solutions, Orlando
4/2021 – 5/2023 (2 Jahre, 2 Monate)
Software Consultant
Tätigkeitszeitraum

4/2021 – 5/2023

Tätigkeitsbeschreibung

Led and managed a team of 5 members, 3 front-end and 2 back-end developers.
Design, develop, and test an e-commerce site serving over 4000+ customers, increasing company revenue by 20% after half a year.
Applied Use Case diagrams to validate and test web application design against the UI architecture, reduced operational costs by 30%.
Using Node.js, Express.js and MySQL, built a scalable RESTful API that handles over 120 requests per second and cuts server costs by 25% with 99.8% uptime.
Built cloud native architecture using AWS Lambda, API Gateway, AWS Cloud Formation.
Worked in Agile Development and maintained effective communication in the team going through all phases of SDLC.

Eingesetzte Qualifikationen

Webservices

Full Stack Web Developer
Pilot, Warsaw
1/2019 – 2/2021 (2 Jahre, 2 Monate)
Import & Export
Tätigkeitszeitraum

1/2019 – 2/2021

Tätigkeitsbeschreibung

Optimized database queries and schema design to improve the company's operational strategy, using MongoDB as the primary NoSQL database reduced query response time by 50%, resulting in a 2x increase in the company's supporters.
Implemented an authentication and authentication system using Nest.js and
Redis that improved secure users and experiences, increasing the number of
users logging in daily by more than 500+.
Using TypeScript, developed a scalable, web-based solution that analyzed management workflows, identified time-consuming processes, and customized them for individual departments, speeding up the company's work by 1.5x.
Wrote unit tests and E2E tests using Jest and cypress to ensure that the APIs were working as expected.

Eingesetzte Qualifikationen

Responsive Webdesign

Full Stack Developer
Eloomi, Copenhagen
12/2016 – 12/2018 (2 Jahre, 1 Monat)
IT & Entwicklung
Tätigkeitszeitraum

12/2016 – 12/2018

Tätigkeitsbeschreibung

Worked in a team, involved in developing the UI layout and front-end
programming and backend programming for responsive web design that matches requirements.
Making the web pages dynamic and asynchronous using AJAX, JSON and XML.Worked to call REST services(JSON) from client side. Adopted a cross browser
and cross platform approach to make the website more versatile and
Supportive.
Followed Web Accessibility Guidelines while coding the website. Used Web Developer, Firebug, and IE developer toolbar for debugging and browser compatibility.

Eingesetzte Qualifikationen

Webdesign

Front End UI Developer
Labster, Copenhagen
2/2014 – 7/2016 (2 Jahre, 6 Monate)
Educational Software
Tätigkeitszeitraum

2/2014 – 7/2016

Tätigkeitsbeschreibung

Built html templates for high traffic and complex data driven website.
Created branding in the web UI front end using CSS classes.
Worked with the business analysts to develop High-level Document and Detailed level Document for various UI modules.
Implemented Web services so that our clients can access it to get the required information based on the customer information provided.
Designed, coded, maintained, tested, implemented, and validated 1+ web applications.

Eingesetzte Qualifikationen

Dreamweaver

Ausbildung

Computer Science
Ausbildung
IT University of Copenhagen
2021

Über mich

A senior full stack developer with over 8 years of experience, I have honed my skills and gained experience in various technical stacks. I am self-dedicated, self-driven, and capable of working with minimal supervision. I have joined and contributed to over 20 projects at an early stage, planned the architecture of the system, executed the plan, and scaled it to handle over 10,000 concurrent users.

Weitere Kenntnisse

In addition to my skills as a full stack web developer, I also have experience with database management, server administration, and web security. I am proficient in various programming languages and frameworks, and I am constantly learning new technologies to stay up to date with industry trends. I also have experience with project management and working in agile development environments.

Persönliche Daten

Sprache
  • Englisch (Muttersprache)
Reisebereitschaft
Europa
Arbeitserlaubnis
  • Europäische Union
Home-Office
unbedingt
Profilaufrufe
80
Alter
30
Berufserfahrung
10 Jahre und 4 Monate (seit 12/2013)
Projektleitung
8 Jahre

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