JavaScript Experts in Leipzig
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Meet FRATCH Experts in Leipzig, who have recently used JavaScript
Jens Oberender
Last position:
Freelance Java Developer / DevOps Engineer at Unpublished defense company
- Extension of OSGi modules in a complex communication solution
- Debugging communication with Wireshark and remotely in the JENS test environment
- Migration of tests from TestNG to JUnit 5 with Mockito and AssertJ
- Updating vulnerable dependencies and improving code quality
- Changes to the Vaadin frontend
- Increasing test coverage
Frank Richter
Last position:
eCommerce Software Developer at WirTube-Shop
- Maintenance and system handover
- Planning and carrying out core and plugin updates
- Developing a plugin to extend invoice creation and payment via Flow Builder
Peter Teich
Last position:
Freelance Go-Developer/DevOps-Engineer at IONOS SE
- Implementation of an API for customers to provide NFS shares in the cloud
- Creating Kubernetes operators and services with REST APIs in Go
- Using LinuxKit for provisioning VMs
Sascha Weißbach
Last position:
Lead Product Owner CADKit at Ottobock SE
- Realignment and technical leadership of a CAD web platform for the global digitization of the prosthetics manufacturing process
- Translating the CPO's vision into a technical roadmap and leading an interdisciplinary team of developers, designers, and QA
- Implementing complex 3D interfaces using Vue.js and Three.js
- Global rollout of 8 scalable web apps, increasing production efficiency by 80%
Gwen Glaser
Last position:
Senior Ruby on Rails & DevOps Developer at Sapiens
Further development of a software solution for managing test requests and test notifications according to §106d SGB V for the Hamburg Association of Statutory Health Insurance Physicians.
- Developed numerous features, performance optimizations, refactoring, error analysis
- Refactored the dev container setup
- Optimized the GitLab CI build pipeline
- Contributed optimizations to the team workflow
Julian Haluska
Last position:
Working Student / Master's Thesis Student Software Development at Scale GmbH
- Tech-Stack: Python, Qt, tensorflow.js, plotly, Angular, TypeScript, HTML, CSS, Git
Lucas Jahn
Last position:
Full-Stack Developer (WordPress, React.js) at Rabot Energy
Michael Lühr
Last position:
B2B Shop Development for Curtain Fabrics
- Development of a B2B shop based on Magento 2
- Plugin research and implementation, e.g. custom prices per customer
- Implementation of individual customizations
- Quality assurance
- Release management
- Collaboration with the marketing team
- Technologies: Magento 2, CSS, JavaScript, PHP, Docker, Git
Norbert Stein
Last position:
Technical training & open-source work at Personal Project
- training and official certification as Certified Kubernetes Application Developer
- open-source development and documentation in a personal project
- keeping updated about cloud native and AI technologies through courses and books
- Tech: Kubernetes, Docker, Typescript, Node.js
Sebastian Papke
Last position:
Freelance Technical Writer and CE Coordinator at Freelance
- Full cycle documentation creation, maintenance and submission: from kickoff, content research, document creation, translation management to final delivery
- Conduct project-related research on documentation-relevant standards, guidelines and regulations to ensure legal security and valid results
- Created documents such as operating, assembly, software manuals as well as online help and infographics
- Developed risk assessments based on Annex I Machinery Directive and compiled requirements of relevant norms, directives and laws
- Prepared all necessary CE documents: risk assessment; nameplate; declaration of conformity
- Collaborated closely with all involved departments to ensure CE compliance process
Mostafa Shawki
Last position:
Freelance Senior Software Engineer & AI Consultant at Self-employed
- Led the development of a complex geospatial data platform, engineering an end-to-end system for processing and analyzing high-resolution aerial imagery.
- Engineered a scalable backend responsible for on-the-fly map tile serving and running complex data analysis queries using PostGIS and Python.
- Developed and trained custom computer vision models using Python, PyTorch, and YOLOv8 to perform object detection and segmentation on large-scale datasets.
- Built modern, responsive user interfaces and data visualization dashboards using Next.js, TypeScript, and React.
- Gained practical expertise in geospatial libraries such as GDAL and Rasterio for processing and manipulating raster and vector data.
- Managed the entire project lifecycle, from initial technical architecture and database design to final deployment using Docker.
Knud Werner
Last position:
Lead Programmer, Architect and Deputy Product Owner at Bundesagentur für Arbeit
- Lead programmer, architect and deputy product owner
- Completed transition from zPDV to STEP
- Ensured quality of C++ and Perl sources through automated and manual checks
- Supported resolution of incidents and errors in testing
- Implemented batch for supplementary assignment of payment run numbers
- Implemented batch for distribution of SGB 2 information to the central payment unit
- Supported replacement of Solaris with Linux
- Upgraded gcc from 7.4 to 9.3
- Programmatically generated Makefiles from Borland projects for builds
- Extended funding data with new attribute “internship travel cost indicator”
- Programmatically generated XSD and WSDL files from IDL definitions
- Represented the product owner when needed
- Implemented batch for one-time payment processing
- Developed generator for Liquibase files
- Implemented and maintained regular anonymization of production data
- Supported migration from SLES 12 to SLES 15
- Supported introduction of mutual TLS
- Implemented batch for sending deletion impulses to EDA BE
- Organized script directory structure
- Investigated potential introduction of String-Latin and implemented minimal solution
- Remediated security findings identified by CheckMarx
- Supported PAP recalculations and general change notices
- Converted ERP interfaces from SOAP to REST
- Planned technical and business topics such as register modernization, cash register security, training costs, four-eyes principle
Jan Beckert
Last position:
API-Engineer at Freelance
- API-first product design (OpenAPI 3, HAL) and development (NodeJS)
- Setting up DevOps pipelines with GitHub Actions in an AWS architecture
- Technologies: OpenAPI 3, REST, HAL, NodeJS, JavaScript, TypeScript, AWS, AWS Lambda, Docker, GitHub Actions
Jens Fischer
Last position:
Strategic Business Consultant at EURO Kartensysteme
- Analysis, redesign and functional specification for a software system to record, process and reimburse all claims in the girocard scheme
- Analysis, conception and execution for a bidding for the introduction and implementation of Identity & Access Management, Masterdata Management and Document Management Systems
- Project management for the software development project for the EKS-Net platform for the recording, processing and reimbursement of all claims in the girocard scheme
- Project management for the introduction of Identity and Access Management System, Master Data Management System and Document Management System
- Strategy consulting for digitalization of business processes
- Advice on payment transactions, compliance (PEP and sanction list checks) and risk analysis
- Design of data models and APIs
Hannes Witt
Last position:
intermedix GmbH / CGM Deutschland AG
Rule-based software for managing, planning and delivering marketing materials in the pharmaceutical industry
High performance, high availability
Fullstack, DevOps (CI/CD)
Python, PostgreSQL, Vue.js, TypeScript, Docker, Docker Compose, Nginx
Successfully migrated old Excel-based processes into an optimized product that has been in production since 2024
Discover over 15,000 top freelancers
Statistics of experts using JavaScript
Aggregated from the professional profiles of matched freelancers.
Experience
21 years (Germany: 18 years)
Position duration
2.4 years (Germany: 5.1 years)
Positions per freelancer
12
Top business areas
Information Technology, Product Development, Project Management
Top industries
Information Technology, Energy, Professional Services
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
82% (Germany: 89%)
Master's degree or higher
53% (Germany: 51%)
Doctorate
6%
Certifications per freelancer
1 (Germany: 2)
Most common languages
German, English, Spanish
Speak two or more languages
95% (Germany: 97%)
Based on our profile pool as of 30 Aug 2026.
Daily rate distribution
The chart shows how the daily rates of freelancers in this technology in Leipzig are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows how many freelancers charge within that range.
Average rates of experts in Leipzig using JavaScript
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 30 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
About the technology
Web products
JavaScript powers the interactive layer of modern websites and many server-side services. Companies use it for customer portals, dashboards, content tools, and product features that need fast feedback in the browser. In Leipzig, it is common in commerce, media, logistics, and software teams that work across local and remote setups.
Typical work
- Single-page applications and interactive front ends
- Node.js APIs and backend services
- Progressive web apps and hybrid app logic
- Automation scripts and internal tooling
Strong specialists know how to keep code readable, event-driven, and easy to maintain. They work with browser APIs, asynchronous flows, testing, and deployment details that shape real delivery.
Ecosystem
JavaScript rarely stands alone. It is often paired with TypeScript, React, Vue, Angular, Node.js, npm, Vite, Jest, and Playwright. Experienced professionals know when to stay close to standard language features and when a framework adds value without creating friction.
When to bring help
Companies bring in freelance experts when a product needs a new interface, a legacy app needs cleanup, or a team must ship with an existing stack quickly. It also helps when internal specialists need support for performance issues, testing gaps, build setup, or refactoring around old code.
What strong specialists do
Good JavaScript professionals write code that works across browsers, handles async behavior cleanly, and fits the rest of the stack. They think about maintainability, state management, accessibility, and the handoff between client and server. They also document choices so teams can continue without confusion.
Local collaboration
Leipzig projects often mix on-site workshops with remote delivery. That works well for JavaScript because the daily work lives in code, tickets, and reviews. Clear communication matters most when freelancers join product teams, design teams, or backend specialists already using the same delivery flow.
Frequently asked questions
The facts hiring teams ask for most often when it comes to JavaScript.
JavaScript is used for interactive websites, web applications, dashboards, and many server-side services through Node.js. Companies also use it for automation, internal tools, and hybrid app logic. It is a good fit when the product needs quick interaction in the browser and a large ecosystem around it.
JavaScript is the core language, while TypeScript adds static typing on top of it. Many teams choose JavaScript for smaller codebases, rapid prototyping, or existing applications that already run well without types. TypeScript is often preferred when a larger team wants stronger structure and earlier error detection.
A strong JavaScript specialist usually also knows HTML, CSS, REST or GraphQL APIs, testing tools, and at least one framework such as React, Vue, or Angular. For backend work, Node.js, Express, and database basics matter as well. For polished delivery, accessibility and performance awareness are important too.
JavaScript work can range from a small feature fix to a complex front-end architecture change. A simple task may only need one focused specialist, while a larger product usually benefits from someone who has shipped similar interfaces and can guide structure, testing, and deployment. The key is matching the scope to the codebase, not just the language.
Yes, JavaScript collaboration is often remote-friendly because most work happens in repositories, tickets, and browser-based previews. In Leipzig, on-site sessions can still help at the start of a project or during workshops with product and design teams. Many companies use a mixed setup that combines both.
With JavaScript, quality shows in clear async handling, clean component structure, sensible state management, and tests that cover real behavior. Strong specialists also avoid unnecessary framework complexity and keep browser compatibility in mind. Good code is easy for the next person to understand and extend.
No. JavaScript is common in the browser, but it also powers backend services, build tooling, scripts, and automated tests. Through Node.js, many teams use it across the stack to reduce context switching and share patterns between client and server.
A JavaScript freelancer is useful when speed, specific stack knowledge, or extra capacity matters more than a long hiring process. That often happens during a product launch, a refactor, a framework migration, or a recovery phase after technical debt builds up. It is also a practical choice when a team needs short-term leadership around delivery quality.
The average hourly rate of freelancers in Leipzig, Germany who have used JavaScript in their recent projects is 87 €, which corresponds to a daily rate of about 699 € based on an 8-hour working day.
Of the freelancers in Leipzig, Germany who have used JavaScript in their recent projects, 82% hold at least a Bachelor's degree, 53% hold at least a Master's degree, and 6% hold a doctorate.
On average, freelancers in Leipzig, Germany who have used JavaScript in their recent projects have 21 years of professional experience, with a single engagement typically lasting around 2.4 years.
The most common languages among freelancers in Leipzig, Germany who have used JavaScript in their recent projects are German (95%), English (95%), and Spanish (20%).
The most common industries among freelancers in Leipzig, Germany who have used JavaScript in their recent projects are Information Technology (90%), Energy (45%), and Professional Services (45%).
The most common business areas among freelancers in Leipzig, Germany who have used JavaScript in their recent projects are Information Technology (95%), Product Development (95%), and Project Management (55%).
Main locations of FRATCH Experts, who have recently used JavaScript
Our freelancers and interim experts are at home across the DACH region — available on-site in the major business hubs or fully remote. Choose a location to discover matched specialists, local market insights and up-to-date availability.
Berlin 
Hamburg 
Munich 
Cologne 
Frankfurt 
Stuttgart 
Dusseldorf 
Dortmund 
Essen 
Bremen 
Dresden 
Hanover 
Nuremberg Request a free demo
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Philipp Thomaschewski
FRATCH CEO
