Hire the best JavaScript Developers in Aachen, DE

Check out JavaScript Developers in Aachen, DE with the skills you need for your next job.
Clients rate JavaScript developers
Rating is 4.8 out of 5.
4.8/5
based on 557 client reviews
  • $70 hourly
    I am a senior developer specializing in Google Apps Script including Add-ons, Web Apps and implementation of Google Workspace APIs (Sheets API, Drive API, Gmail API, Calendar API, Admin SDK, Docs API, Forms API, Directory API) and well as Google Maps API. I also have wide experience in the set-up and administration of the Google Workspace environment and the Google Cloud Platform. After working for almost 5 years contracted to Google, I now work exclusively as a freelancer. I have also been active on puclic forums like Stackoverflow profile where I have helped many developers (Stackoverflow user name: ziganotschka). I prefer to work on medium-term or long-term projects, but am also always happy to assist you with a single-time project. I work both as a developer, as well as a consultant for other developers who are less experienced with the Google Workspace ecosystem and publication of Add-ons. I am responsible, reliable, with attention to detail, focusing on efficient code writing and finding workarounds for complicated problem settings and individually tailored solutions. I can also help with code optimization. You will not regret contracting me for your project! EXPERIENCE: - Google APIs (Sheets API, Drive API, Gmail API, Calendar API, Admin SDK, Docs API, Chat API, Forms API, Directory API, Data Transfer API, Groups API, Reports API, People API, Tasks API, Slides API, Google Picker API, Charts API) and well as Google Maps API and Natural Language API. - Developement and publication of Google Editor and Google Workspace Add-ons for Google Sheets, Docs, Forms, Drive, Calendar and Gmail - Google Sheets integrations and dashboards - Set-up and implementation of service accounts and domain-wide delegation - Set-up and configuration of Google Cloud projects and Google Admin console - Restoring accidently deleted Google Drive data - Automation of Google Sheets Dashboards - Code optimization including integration of Google Workspace APIs and batch requests - Workrounds to bypass Google apps Script quota and limitations - Automatic creation of reports and invoices - Implementation of Google Picker - Programatic creation of dynamic Google Forms and custom HTML forms, integration into Google Sheets ecosystems - Programatic export of Google Sheets to pdf including customisation of page breaks and other parameters - Generation of barcodes and labels - Set-up and integration of Firestore & Firebase - Implementation of exponential backup algorithms - Creation and maintenance of Looker Studio (formerly: Data Studio) Dashboards THIRD PARTY API INTEGRATIONS: - Paypal, Twilio, Bittrex, Coinbase, MyHours, ChatGPT etc. as well as you custom APIs SOURCE CODE VERSION CONTROL: Bitbucket, Git, SVN PROJECT MANAGEMENT TOOLS: Jira, Asana, Trello, Slack, Clickup FURTHER SKILLS: MySQL, PHP, general Web Development, Chrome Extensions
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Google Cloud Platform
    Web Application
    Spreadsheet Macros
    Google Workspace Administration
    Google Workspace
    Looker Studio
    Google Sheets
    Google Docs
    Automation
    English to German Translation
    Technical Translation
    Dashboard
    Google APIs
    Google Apps Script
  • $100 hourly
    I'm an experienced PHP web developer, mostly working with WordPress systems and plain PHP applications. I've been building a web hosting platform from scratch and gained a lot of experience in server administration and securing a web server by doing so. Managing servers, email services and developing new web projects is what I thrive on. I like optimizing systems for performance and getting the best out of what I have.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Ubuntu
    Email Deliverability
    Linux
    Postfix SMTP Server
    Performance Optimization
    Apache HTTP Server
    WordPress Malware Removal
    DNS
    Linux System Administration
    SSL
    Let's Encrypt
    WordPress Development
    WordPress
    CSS
    PHP
  • $10 hourly
    Seasoned in the realms of software engineering, CRM specialization, and UI/UX design, I bring a multifaceted skill set tailored to deliver comprehensive solutions. With a wealth of experience in crafting intuitive user experiences, optimizing customer relationship management systems, and architecting robust software, I offer a unique blend of technical prowess and creative finesse. My journey through software engineering has honed my ability to navigate complex systems and develop tailored solutions that resonate with user needs. As a CRM specialist, I've orchestrated seamless integrations and fine-tuned strategies that drive customer engagement and retention. Additionally, my proficiency in UI/UX design ensures that every product I touch not only functions flawlessly but also captivates and delights its users. I thrive on the intersection of innovation and functionality, channeling this passion into every project I undertake. Let's collaborate to elevate your software, streamline your CRM processes, and create visually stunning user experiences that leave a lasting impact.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    API
    Microservice
    RESTful Architecture
    HTML5
    CSS
    Node.js
    PHP
    Kotlin
    jQuery
  • $30 hourly
    Work Ethics // Honesty // Integrity // Positive Attitude // Friendly nature these are the perks you get with each task at absolutely free of cost. Having 3+ years of Experience with great Expertise in Python Development with Data analysis, Data mining and Web scrapping specialization. Works with:- ✔️ Website development with PHP, Wordpress, Laravel ✔️ Frontend development with Javascript, React, Angular and HTML5 ✔️ Python Flask server ✔️ Python Django Application ✔️ Python Web scrapping ✔️ Data manipulation with Pandas, Numpy and Sci-kit-learn. ✔️ SQL and No SQL (Expert in MongoDB) database. ✔️ AWS Ec2 computational server and various database setup. ✔️ Telegram bot development with Python and Node Js.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Ionic Framework
    React Native
    React
    Node.js
    Angular
    GraphQL
    MongoDB
    WordPress
    SQL
  • $25 hourly
    As a full-stack engineer with 9+ yrs of experience, I built attractive and responsive UIs, clean and modern code, robust and reliable web applications. I thrive working with others towards a shared goal. My previous experience gives me strong problems solving skills and empathetic communication. My specialties include these buzzwords: -quickly learning new skills and programming languages, -problem-solving, -domain-driven design, -responsive design principles, -website optimization, -the Model View View Model(MVVM), -the Model View Controller (MVC) methods of organizing code. So far I have -HTML5, CSS 3, Bootstrap, jQuery, JavaScript, Typescript, -React, Next.js, Angular, Vue.js, Nuxt.js, GraphQL, -ExpressJS, NodeJS, NestJs, Laravel, Django, -MySQL, MongoDB, PostgreSQL, -Git/GitHub. I'm expanding my skills in Bash, nginx, Python, automation, Continuous integration and Continuous Deployment (CI/CD), and cloud services (AWS - EC2, Amplify, Lamda).
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Azure DevOps
    Amazon EC2
    Google Chrome Extension
    Python
    Java
    Node.js
    Vue.js
    Angular
    React
    TypeScript
    Tailwind CSS
    PHP
    HTML5
  • $10 hourly
    I am a dedicated and results-driven data scientist and analyst with extensive experience in data management and machine learning. My background includes a solid foundation in statistical analysis, data visualization, and the development of predictive models to solve complex business problems. Currently pursuing a Bachelor’s degree in Computer Science at RWTH Aachen, I have honed my technical skills in programming languages such as Python and R, as well as tools like TensorFlow and scikit-learn for machine learning applications. I excel in working with relational databases (e.g., SQL, PostgreSQL) and have hands-on experience in data preprocessing, feature engineering, and model evaluation. In addition to my data science expertise, I have a strong background in web development, particularly using Next.js for building dynamic and responsive applications. My skills in front-end and back-end development enable me to create seamless user experiences while implementing data-driven solutions.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Computer Vision
    Natural Language Processing
    Beta Testing
    Alpha Testing
    Python
    Generative AI
    Chatbot Development
    Shopify
    WordPress
    Web Development
    Data Analysis
    Machine Learning
  • $10 hourly
    Highly motivated Data Scientist, ML and Web Developer specialist pursuing a Bachelor's degree in Computer Science at RWTH Aachen University, one of the top universities in Germany. Previously studied Computer Science at Kyiv Polytechnic Institute (KPI), a leading technical university in Ukraine. Possess a solid academic background in AI, Machine Learning, and Data Science. Nominated by RWTH Aachen for an exchange program at KAIST in South Korea, a globally renowned institution. Experienced in developing solutions for extracting structured data from unstructured sources like scanned documents using advanced technologies such as OCR, LLMs (ChatGPT and Llama), and the HuggingFace models. Currently contributing to AI research as a student assistant at research KaSyTwin project. Passionate about innovative, AI-driven solutions, with a strong focus on academic excellence and practical problem-solving.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Alpha Testing
    Beta Testing
    Chatbot Development
    React
    Data Analysis
    Python
    Web Development
    Shopify
    WordPress
    Computer Vision
    Natural Language Processing
    Machine Learning
    ChatGPT
    Generative AI
  • $30 hourly
    7+ years Experienced Mobile App Developer | React Native App Developer | Flutter App Developer | iOS Developer | Kotlin | Swift | Dart | Typescript | Android App | iOT Mobile App | Mobile App Design I have developed 100+ Mobile Apps in iOS and Android like 𝗙𝗼𝗼𝗱 𝗱𝗲𝗹𝗶𝘃𝗲𝗿𝘆 𝗮𝗽𝗽, 𝗢𝗻-𝗱𝗲𝗺𝗮𝗻𝗱 𝗔𝗽𝗽, 𝗛𝗼𝗺𝗲 𝘀𝗲𝗿𝘃𝗶𝗰𝗲𝘀 𝗮𝗽𝗽, 𝗛𝗮𝗻𝗱𝘆 𝗺𝗮𝗻 𝗮𝗽𝗽, 𝗠𝗮𝗿𝗸𝗲𝘁𝗽𝗹𝗮𝗰𝗲 𝗮𝗽𝗽, 𝗦𝗮𝗹𝗼𝗻 𝗮𝗽𝗽, 𝗕𝗲𝗮𝘂𝘁𝘆 𝗮𝗽𝗽, 𝗧𝗮𝘅𝗶 𝗮𝗽𝗽, 𝗥𝗶𝗱𝗲 𝗮𝗽𝗽, 𝗘-𝗰𝗼𝗺𝗺𝗲𝗿𝗰𝗲 𝗮𝗽𝗽, 𝗗𝗮𝘁𝗶𝗻𝗴 𝗮𝗽𝗽, 𝗛𝗲𝗮𝗹𝘁𝗵 𝗮𝗻𝗱 𝗳𝗶𝘁𝗻𝗲𝘀𝘀 𝗮𝗽𝗽, 𝗧𝗿𝗮𝘃𝗲𝗹 𝗮𝗽𝗽, 𝗟𝗶𝘃𝗲 𝗦𝘁𝗿𝗲𝗮𝗺𝗶𝗻𝗴 𝗮𝗽𝗽, 𝗩𝗶𝗱𝗲𝗼 𝘀𝘁𝗿𝗲𝗮𝗺𝗶𝗻𝗴 𝗮𝗽𝗽, 𝗙𝗶𝗻𝘁𝗲𝗰𝗵 𝗮𝗽𝗽, 𝗦𝗵𝗼𝗽𝗽𝗶𝗻𝗴 𝗮𝗽𝗽, 𝗧𝗲𝗹𝗲𝗺𝗲𝗱𝗶𝗰𝗶𝗻𝗲 𝗮𝗽𝗽, 𝗙𝗶𝗻𝗮𝗻𝗰𝗲 𝗔𝗽𝗽, 𝗥𝗲𝗮𝗹 𝗲𝘀𝘁𝗮𝘁𝗲 𝗮𝗽𝗽, 𝗦𝗼𝗰𝗶𝗮𝗹 𝗺𝗲𝗱𝗶𝗮 𝗮𝗽𝗽, 𝗖𝗵𝗮𝘁 𝗮𝗽𝗽, 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗮𝗽𝗽, 𝗠𝗲𝘀𝘀𝗮𝗴𝗶𝗻𝗴 𝗮𝗽𝗽, 𝗛𝗼𝘁𝗲𝗹 𝗯𝗼𝗼𝗸𝗶𝗻𝗴 𝗮𝗽𝗽, 𝗚𝗿𝗼𝗰𝗲𝗿𝘆 𝗼𝗿𝗱𝗲𝗿 𝗮𝗽𝗽, 𝗔𝗜 𝗖𝗵𝗮𝘁𝗯𝗼𝘁, 𝗔𝗜 𝗪𝗲𝗹𝗹𝗻𝗲𝘀𝘀 𝗮𝗽𝗽, 𝗔𝗜 𝗟𝗲𝗮𝗿𝗻𝗶𝗻𝗴 𝗮𝗽𝗽, and many more. 𝐖𝐡𝐚𝐭 𝐘𝐨𝐮'𝐥𝐥 𝐆𝐚𝐢𝐧 𝐟𝐫𝐨𝐦 𝐂𝐨𝐥𝐥𝐚𝐛𝐨𝐫𝐚𝐭𝐢𝐧𝐠 𝐰𝐢𝐭𝐡 𝐌𝐞: Custom React Native iOS/Android App HandyMan React Native Mobile App Developer GPS Based React Native Mobile App Developer Telehealth/Hipaa Native Mobile App Developer Uber Clone React Native Mobile App Developer Food Delivery Native Mobile App Developer Retail Industry Native Mobile App Developer Worker and Jobs Management Native Mobile App Developer Custom Flutter Mobile App Developer Dating Native Mobile APP Developer Live Commerce Native Mobile app Developer for Android & iOS Mobile App Developer with Firebase Backend Mobile App Developer with Custom Dashboard (Node.js, Laravel, MERN) Native Android Mobile App Developer KOTLIN Android Mobile App Developer Native iOS Mobile App Developer Swift iOS Mobile App Developer Custom React Native Mobile App Developer React Native Mobile App Developer for Food Delivery Mobile App React Native Mobile App Developer React Native Mobile App Developer for Education Mobile App React Native Mobile App Developer for Sports Mobile App React Native Mobile App Developer for Fitness Mobile App React Native Mobile App Developer for Blockchain Mobile App React Native Mobile App Developer for Auction App for IOS and Android React Native Mobile App Developer for E-Commerce Mobile App React Native Mobile App Developer for Real Estate Mobile App React Native Mobile App Developer React Native Mobile App Developer for Events Mobile App React Native Mobile App Developer for Management Mobile App React Native Mobile App Developer for HR Mobile App React Native Mobile App Developer for Job Finder Mobile App Flutter Mobile App Developer for IOT Mobile App Flutter Mobile App Developer for Artificial Intelligence Mobile App Flutter Mobile App Developer for Security Mobile App Flutter Mobile App Developer for Digital Agency Mobile App Flutter Mobile App Developer for Construction Mobile App Flutter Mobile App Developer for Savings Mobile App Flutter Mobile App Developer for Payment Transfer Mobile App Flutter Mobile App Developer for Clothes Shop Mobile App Flutter Mobile App Developer for School Mobile App Flutter Android / iOS app Flutter Bug Fixings 𝗠𝘆 𝗦𝘁𝗿𝗲𝗻𝗴𝘁𝗵𝘀 𝗮𝗻𝗱 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲: - 𝐄𝐱𝐩𝐞𝐫𝐭 in designing and developing cross-platform 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩𝐬 𝐮𝐬𝐢𝐧𝐠 '𝐑𝐞𝐚𝐜𝐭 𝐍𝐚𝐭𝐢𝐯𝐞' & '𝐅𝐥𝐮𝐭𝐭𝐞𝐫', Dart. - 10+ Years of experience with Native Mobile app Developer in Kotlin, Swift - 𝟲+ years of experience with 𝗥𝗲𝗮𝗰𝘁 𝗡𝗮𝘁𝗶𝘃𝗲, React Native developer/designer, Javascript, Typescript, React Native mobile app Developer - 5+ years with 𝗙𝗹𝘂𝘁𝘁𝗲𝗿, Flutter developer/designer, Flutter mobile app Developer - 𝗪𝗲𝗯 / 𝗕𝗮𝗰𝗸𝗲𝗻𝗱(Dashboard): Solid knowledge of 𝗝𝗮𝘃𝗮𝗦𝗰𝗿𝗶𝗽𝘁, 𝗥𝗲𝗮𝗰𝘁𝗝𝘀, 𝗡𝗼𝗱𝗲𝗝𝘀, 𝗘𝘅𝗽𝗿𝗲𝘀𝘀𝗝𝘀, 𝗧𝘆𝗽𝗲𝘀𝗰𝗿𝗶𝗽𝘁, 𝗟𝗮𝗿𝗮𝘃𝗲𝗹, 𝗣𝗛𝗣,Nest.js,WordPress, Python, Django - Strong understanding of Native 𝗮𝗻𝗱 𝗛𝘆𝗯𝗿𝗶𝗱 𝗔𝗽𝗽 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 - 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗲 𝘁𝗵𝗶𝗿𝗱-𝗽𝗮𝗿𝘁𝘆 𝗔𝗣𝗜'𝘀 - Familiar with Microservices like AWS - Knowledge of Database like MySQL, MongoDB, Redis, SQLite, Elasticsearch, PostgreSQL, etc. - Backend Brilliance - From API design to server-side languages like PHP, MERN, Node.js and more. - Design Mastery - Utilizing tools like Figma, Adobe XD, and more. - 𝗔𝗻𝗱𝗿𝗼𝗶𝗱: Kotlin, Java, Jetpack compose - 𝗶𝗢𝗦: Swift, Objective-C, SwiftUI - 𝗖𝗿𝗼𝘀𝘀-𝗽𝗹𝗮𝘁𝗳𝗼𝗿𝗺 (𝗛𝘆𝗯𝗿𝗶𝗱 APP): Flutter (Dart), React Native - 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱: React.Js, HTML5, JavaScript, jQuery - 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀: SQLite, MySQL, MongoDB, PostgreSQL - 𝗟𝗮𝘁𝗲𝘀𝘁 𝗧𝗿𝗲𝗻𝗱𝘀: Artificial Intelligence (AI), Augmented Reality (AR), Internet Of Things (IoT) Experience Mobile App Developer | Mobile App Developer | React Native App Developer | Flutter App Developer Free Consultation Let's schedule an Call or Just click on '𝗜𝗻𝘃𝗶𝘁𝗲 𝘁𝗼 𝗝𝗼𝗯' button.
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Firebase
    Mobile App
    Web Development
    Swift
    Kotlin
    IOStoken
    Android
    Dart
    FlutterFlow
    Flutter
    React Native
    Android App Development
    iOS Development
    Mobile App Development
  • $25 hourly
    With over 8+ years of industry experience and a profound passion for writing clean, accessible, and scalable code, I have garnered the expertise to become a Senior Frontend Developer. I possess extensive knowledge in Javascript/Typescript, and I have spent a significant portion of my career mastering frameworks such as React, Next.js, Vue.js, Angular, and Svelte. I’m an ardent believer that front-end development is not merely about aesthetics, but a combination of seamless user experience and efficient functionality. To cater to the modern design orientations, I have honed my skills in Tailwind CSS, a utility-first CSS framework that is fast becoming the go-to tool for responsive designs. My extensive skill set for frontend development includes: 1. Profound understanding of Javascript and Typescript. 2. Expertise in modern JS frameworks: React.js, Next.js, Vue.js, Angular, Svelte. 3. Delighted in producing clear, testable, and maintainable code backedup by Jest and Cypress. 4. A connoisseur in using Tailwind CSS for responsive and elegant design. 5. Versed in using Node.js, Express.js and MongoDB for backend. 6. Excellent knowledge of RESTful APIs and GraphQL. 7. Use of modern development tools (Git, Docker) and methodologies (Agile, Scrum). Project management demands the discipline of timely delivery without compromising quality. Over the years, I’ve collaborated with several cross-functional teams, consistently ensuring the best project outcomes. I believe communication is key in each project and pride myself on my proactive communication and quick responses. Whether you are looking for someone who can build from scratch or someone who can optimize existing programs for improved functionality and user experience, I am your "go-to" individual! Care to discuss your project? Or perhaps you’re interested in knowing more about my previous endeavors? Let's connect 🤝. Looking forward to creating some fantastic digital experiences together! 🚀
    vsuc_fltilesrefresh_TrophyIcon JavaScript
    Responsive Design
    Supabase
    Material UI
    SCSS
    API Integration
    Bootstrap
    Tailwind CSS
    Vue.js
    Angular
    Svelte
    Redux
    Next.js
    React
    TypeScript
  • Want to browse more freelancers?
    Sign up

How hiring on Upwork works

1. Post a job

Tell us what you need. Provide as many details as possible, but don’t worry about getting it perfect.

2. Talent comes to you

Get qualified proposals within 24 hours, and meet the candidates you’re excited about. Hire as soon as you’re ready.

3. Collaborate easily

Use Upwork to chat or video call, share files, and track project progress right from the app.

4. Payment simplified

Receive invoices and make payments through Upwork. Only pay for work you authorize.

Trusted by

How do I hire a JavaScript Developer near Aachen, on Upwork?

You can hire a JavaScript Developer near Aachen, on Upwork in four simple steps:

  • Create a job post tailored to your JavaScript Developer project scope. We’ll walk you through the process step by step.
  • Browse top JavaScript Developer talent on Upwork and invite them to your project.
  • Once the proposals start flowing in, create a shortlist of top JavaScript Developer profiles and interview.
  • Hire the right JavaScript Developer for your project from Upwork, the world’s largest work marketplace.

At Upwork, we believe talent staffing should be easy.

How much does it cost to hire a JavaScript Developer?

Rates charged by JavaScript Developers on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.

Why hire a JavaScript Developer near Aachen, on Upwork?

As the world’s work marketplace, we connect highly-skilled freelance JavaScript Developers and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream JavaScript Developer team you need to succeed.

Can I hire a JavaScript Developer near Aachen, within 24 hours on Upwork?

Depending on availability and the quality of your job post, it’s entirely possible to sign up for Upwork and receive JavaScript Developer proposals within 24 hours of posting a job description.