
JavaScript Experts
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Meet FRATCH Experts who have recently used JavaScript
Alwin G.
Last position:
IT Interim Manager & AI Strategist
- Founder of CheironX: AI-supported GRC management (ISO 27001, BSI IT-Grundschutz, TISAX, DORA)
- Strategic focus on Agentic AI and GenAI for modern IT Governance, Risk & Compliance Management
- IT interim management and strategic consulting
Peter V.
Last position:
IT Administrator at SEAT Deutschland
- Creating concepts and architecture for domain integration (SEAT into the VW structure)
- Domain trusts and administration
- Operation and administration of Windows 2022/ 2025 servers and domains
- Domain restructuring
- GPO and SG editing and migration
- DNS restructuring and migration
Technologies: Windows 2022, Active Directory, ADFS, AD Azure Connect, DHCP, DNS, GPO, VMWare vSphere, Hyper-V, Powershell, Jira, MS Office 365,), SCCM, VSAN Fileservices, Approximately 800 servers, 400 users
Timo H.
Last position:
Software Developer at Smiths Detection
- Extension of a Swing-based UI for recording Security Restricted Articles during baggage screening.
- Introduction of a new workflow for recording Deboarding Events.
- Extension of the reporting system for Security Restricted Articles and Deboarding Events.
- Implementation using JBoss Wildfly, PostgreSQL, spring-boot 3.x, Java 8/21, Swing, JSF, JAX-RS/Resteasy, Docker, Maven, Kiro.
Reinhold M.
Last position:
Business Requirements Engineer, Proxy Product Owner, Tester at AXA Konzern AG
Working Environment
- Insurance / Claims Management (Property, Liability, Automotive)
- REST-based ClaimAPI with Guidewire ClaimCenter
Scope
- Further development of the internal REST-based ClaimAPI with Guidewire ClaimCenter as the backend and various portals/front-end offices as clients, and with the following objectives: + increased AI-supported claims processing outside of Guidewire ClaimCenter + and support for all lines (property, liability, automotive).
- Further development of automated claims processing
Activities
- Interfacing IT & Business
- Design activities with documentation in Confluence, Jira: + Requirements engineering (functional and non-functional) + Design of REST endpoints and coordination with interface partners (esp. AI-colleagues) + Identification, design and evaluation of alternative solutions (moving away from a monolithic approach toward fine-grained endpoints, with code reuse across all lines if possible) + Creation / refinement of product backlog items in Jira, i.e. epics, user stories and tasks, incl. alignment with developers & POs during (pre-)refinement sessions + Using AXA Secure GPT when creating / refining user stories (description, acceptance criteria) and designing REST endpoints + Estimation and prioritization of user stories and tasks during Sprint Planning sessions + Coordination and support during the implementation of Product Backlog items + Driving decision making with preparation and presentation of decision-making documents
- Quality assurance: + Test management, including test case creation using Xray in Jira + Test execution using Bruno as REST client and in Guidewire ClaimCenter + Submission of test artifacts for PO approval + Analysis of production bugs
Methods Big Room Planning (aka PI-Planning in SAFe), Scrum, BPMN, EPK, UML, ERM, DDD
Tools / Tech Stack Teams, Confluence, Jira with Xray, OpenAPI/Swagger, REST, JSON, XML, MS Office, Bruno, GitHub repository (reading), Guidewire ClaimCenter, AXA Secure GPT (AXA's in-house GenAI solution based on Azure OpenAI)
Klaus K.
Last position:
HCL Notes Banking Support, Domino Administration / Migration / Operations at Atruvia / HCL International
Description of duties “Atruvia / HCL International” Role: HCL Notes Banking Support, Domino Administration / Migration / Operations Operations, administration and technical support of the HCL Notes/Domino environment in the Atruvia banking environment on behalf of HCL. As part of an international support team, the focus was on second- and third-level support as well as the processing, management and monitoring of SLA tickets in categories 1, 2 and 3. Duties included the technical analysis and resolution of incidents in the Notes/Domino environment, system administration, and the development and modification of Lotus Notes /Domino applications and LotusScript agents when a programming solution was required. Another focus was ticket dispatching: analysing and assessing incoming tickets, assigning them to the responsible departments and specialist teams, and subsequently coordinating and tracking processing within the agreed SLA periods. There was also direct communication and coordination with subject-matter experts, departments and end customers of the connected banks. In particular, when language or technical communication problems arose within the international support team, German-language customer communication was handled and mediation between customers and technical specialists was provided. Objective Ensuring stable and reliable operation of the HCL Notes/Domino landscape in the Atruvia banking environment and the timely processing of business-critical support cases in line with the agreed Service Level Agreements. Incidents were to be analysed as early as possible and either resolved directly through administrative measures or suitable LotusScript/Notes solutions, or forwarded specifically to the responsible specialist teams. As of: 25.09.2026 (Version 2.10 LITE) including project times Page: 3 of 32 SPO-SOFT EDV Beratung, Dipl.-Ing. Klaus Kano, Tel.: +494532-2767682, Mail: [email], [link] At the same time, qualified preliminary analysis and targeted ticket dispatching were intended to ensure that every ticket reached the technically and professionally responsible department immediately and that unnecessary transfers, processing times and associated costs were reduced. Result Operational Notes/Domino support for the banks served was reliably ensured throughout the entire project period. SLA-relevant tickets were systematically analysed, prioritised, assigned to the responsible departments and tracked through to resolution. Some incidents were resolved directly through administration, technical error analysis and the development of suitable LotusScript agents and modifications to Notes/Domino applications. By directing tickets specifically to the relevant expert and specialist teams, incorrect assignments and unnecessary processing loops were reduced and compliance with the agreed SLA times was supported. Direct communication with the banks and mediation between German-speaking end customers and the international support team also contributed to efficient problem resolution and high customer satisfaction.
Michael F.
Last position:
Platform Architect (Project lead) at Würth IT
I designed and built a self-service AWS platform for Data Science teams with little or no infrastructure-as-code experience. A team writes about 10 lines of Python and gets a deployable stack with full SDLC release cycle that already follows the governance rules. Networking, encryption, IAM and tagging are decided by the platform, not by each team.
New teams or AWS accounts are onboarded with one pull request. Waste prevention and cost control is built into the defaults: Data scientists don't need infrastructure skills.
- Construct library (AWS CDK, Python). Built a versioned catalog of about 20 hardened constructs for being used in data-science projects with ML context
- Governance as code
- Multi-account, multi-tenant
- Golden-path scaffolding
- CI/CD and supply chain. Built reusable GitHub Actions workflows
- Release engineering
- QA with e2e, contract testing and unit test coverage with each release candidate
Michael H.
Last position:
Interim Head of IT / Transformation Manager at A German medium-sized industrial distributor, B2B e-commerce
Agile Transformation: introducing agile principles and transforming traditional IT departments into Scrum and Kanban teams
IT Operating Model: redesigning the IT organization and introducing modern delivery structures and roles
Flight Levels: building up Flight Levels practices within IT to align strategy, coordination and operational execution
Leadership & Coaching: recruiting Agile Coaches and coaching Scrum Masters and IT leaders
ERP Operations: acting as Interim Product Owner for the existing ERP landscape and ensuring business continuity
ERP Transformation: reorganizing and supporting the ERP migration as a Project Manager; Phase 1 (financial accounting) live since October 2025
Operational Core (ERP): establishing dedicated teams for ERP Support, Feature Development, and ERP Migration
Modern Workplace: initiating the transition towards a Microsoft 365-based cloud workplace environment
Integration: establishing a dedicated team to drive integration and connectivity initiatives
Warehouse Operations: building a cross-functional team to support logistics and warehouse-related capabilities
Maintenance & Operations (M&O): introducing a dedicated team for system engineering, security, stable operations and continuous improvement
AI Initiatives: identifying and promoting practical Artificial Intelligence use cases across the IT department
As Interim Head of IT for a German medium-sized industrial distributor, I am responsible for 31 IT employees and lead the digital and organizational transformation, reporting directly to executive leadership. I took over an IT department with almost no basic structures – no clear roles, processes, documentation or ticket system – and with significant technical debt that tied up most of its capacity. Introduced agile principles and ways of working in the IT organization and transformed the traditionally structured IT department into cross-functional Scrum and Kanban teams focused on transparency, collaboration, and customer value delivery.
Redesigned the entire IT organization by establishing a modern operating model, introducing new roles such as Product Owner, Scrum Master and Solution Architect and strengthening the organization through strategic hiring and targeted capability development. Recruited and onboarded Agile Coaches to accelerate the transformation and personally managed and coached Scrum Masters as well as IT department leaders to foster servant leadership, self-management and a culture of continuous improvement.
Aligned IT-internal planning across eight teams to three Flight Levels based on Klaus Leopold (strategy, coordination, team), laying the foundation for later company-wide portfolio management. Consolidated the backlog of more than 10 workstreams and prioritized it by business value and cost of delay. Introduced a ticketing system to increase transparency and enable data-driven decision-making, flow-based work management, and greater accountability at all levels.
Established and supported multiple cross-functional teams, including the Operational Core (ERP) domain with dedicated streams for Support, Feature Development and ERP Migration, as well as teams responsible for Warehouse Operations, Maintenance & Operations (M&O) including system engineering and security, Modern Workplace, Data Quality and integration initiatives. Worked closely with Agile Coaches to support team development, remove impediments, and continuously improve delivery effectiveness.
Acted as Interim Product Owner for the operation and enhancement of the existing ERP landscape while supporting the ERP migration as a Project Manager. Reorganized the project organization and had the already negotiated contract with the implementation partner realigned with a focus on approach and overall responsibility; Phase 1 (financial accounting) has been live since October 2025. Collaborated with the selected implementation partner to design and establish the project organization and target operating model for the ERP transformation, introducing agile delivery structures and ways of working. Facilitated the alignment between business, IT and the external vendor and played a key role in negotiating the contractual framework and delivery model to ensure a sustainable foundation for the transformation program.
Initiated the strategic modernization of the workplace environment through the adoption of Microsoft 365 cloud capabilities, establishing the foundation for enhanced collaboration, scalability and future digital services.
Launched AI initiatives to identify practical business use cases and promote the responsible adoption of Artificial Intelligence across the IT department. Encouraged self-management and empowered teams to take ownership of decisions, delivery and continuous improvement.
Patrick L.
Last position:
Senior GenAI Fullstack Developer at SBH (Schulbau Hamburg)
Remote freelance role focused on Agentic AI strategy, secure application patterns, and reusable agentic workflows for a government agency.
- Development and implementation of an open-source Agentic AI strategy for a government agency, with a focus on GDPR, security, and self-hosted solutions
- Development of reusable agentic workflows and business applications that enable non-technical employees to solve business problems independently
- Implementation of nine business applications with Single Sign-On (SSO) and Azure PostgreSQL integration on Hetzner Linux servers
Techstack: Python, Streamlit, Anthropic SDK (Claude), Azure, Linux, PostgreSQL, MS SQL, Angular
Robert D.
Last position:
Software Architect at FinTech / Wealth Management
- Analysis of existing microservice structures and integration into the event-driven architecture
- Design and implementation of prototypes
- Introduction of structured workflows and integration into a solid testing strategy
- Team: Small specialized team (3-5 people) from analysis through implementation readiness
- Documentation of architectural decisions and definition of interfaces
- Integration of the event-driven pipeline into the existing landscape
- Technologies: Kafka, Docker, Microservices, Event-Driven Architecture, Java, Liquibase
Yusuf C.
Last position:
Senior Software Engineer at LeiKon GmbH
- Development of scalable backend applications with C#/.NET and Java
- Design and implementation of distributed microservice architectures
- Development and integration of REST APIs for industrial applications
- Development of modern web applications with React, Angular, and TypeScript
- Implementation of MQTT-based communication solutions
- Integration of industrial protocols such as OPC UA and Modbus TCP
- Development of batch, process control, and HMI components
- Containerization and deployment of applications with Docker
- Conducting code reviews and supporting architecture decisions
- Close collaboration with Product Owners, QA, and interdisciplinary teams
- Analysis of business requirements and implementation of technical solutions
- Further development of existing software architectures with a focus on maintainability and performance
Technologies: C#, .NET, ASP.NET Core, Java, C++, React, Angular, TypeScript, Vue.JS, MQTT, OPC UA, Modbus TCP, Docker, GitLab, MariaDB, MySQL, Linux
Qamar H.
Last position:
Freelance Consultant Data Analytics & AI Portfolio at TIC Company
- Support for a data, analytics and AI initiative in a regulated enterprise environment by structuring, evaluating and prioritizing several data-driven use cases based on business impact, feasibility, scalability, data maturity and governance requirements.
- Translation of complex business and analytics requirements into clear product, data and implementation logic, as well as preparation of decision-ready documents, target visions and roadmap inputs for stakeholder and management discussions.
Harold T.
Last position:
CPU Watcher — Cloud-Native Monitoring Application at SEUYTEL
- Planned and developed a CPU monitoring application for monitoring system performance and resource utilization.
- Designed and implemented a Spring Boot backend providing a REST API for processing and exposing monitoring data.
- Developed the React frontend for presenting monitoring information in a clear and user-friendly interface.
- Integrated PostgreSQL for persistent storage and management of application data.
- Containerized the application and its services using Docker Compose.
- Automated infrastructure provisioning and deployment using Terraform on AWS.
- Structured the application as a modern, maintainable system using REST-based communication between frontend and backend.
- Designed and developed a secure, scalable CPU monitoring architecture (cpu-watcher) with a dedicated collector application that streams monitoring data to the backend, reducing direct exposure of system resources.
- Designed a secure cloud infrastructure with the database isolated within a private network and OIDC-based authentication.
- Implemented Infrastructure as Code with Terraform and integrated version-controlled CI/CD pipelines to automate testing, infrastructure changes, and application deployments.
- Designed and implemented the frontend delivery architecture using AWS CloudFront.
Stack: Spring Boot · React · PostgreSQL · REST API · Docker Compose · Terraform · AWS
Tobias M.
Last position:
Power BI Expert at MID-SIZED TRADING COMPANY FOR CLEANING TECHNOLOGY AND HYGIENE PRODUCTS
Reporting and controlling using Power BI for a production ERP system
- Analysis of ERP data and interfaces for use in Power BI dashboards
- Evaluation and migration of existing reports (e.g. Excel) to Power BI
- Development of an authorization concept for selective data access
- Documentation and training on the use and customization of Power BI dashboards
Label: Power BI, Excel, SelectLine ERP, Microsoft SQL, SQL Server Management Studio
Ornel Franck W.
Last position:
Sales Partner at ERGO PRO
- Industry: Insurance, Trade, IT
- Customers & Projects: Consulting and selling insurance and similar services
- Main tasks: Insurance consulting (health insurance, retirement planning, wealth building); commercial services, inside and field sales; sales data analysis and forecasting; customer consulting and support; opening a new sales headquarters for private and business customers; business development & innovation management; business use case development; process optimization; stakeholder management; team leadership and training; preparation and delivery of trainings;
- Technologies used: Microsoft Office 365, Microsoft Teams, Jira, Draw.IO, Camunda 8, Java (8, 17,21,25), Git, Spring Boot, Spring Batch, Spring Data REST, Spring Web, Spring Security, J-Unit, Playwright, Lombock, Vaadin, H2, PostgreSQL (16, 17 18), pgAdmin, Docker, LLMs, JasperSoft Studio, JasperReports
Thorsten H.
Last position:
Product Owner, Software Developer, AI Manager, Technical Consultant at crazyALEX.de GmbH
AI-supported document processing and inventory management integration
Design and development of an AI-supported application for the automated processing of delivery and invoice documents, connected to SelectLine ERP. Documents are analyzed using AI, matched with orders and line items, and prepared for posting goods receipts.
IMPACT:
- Automated extraction of structured order, delivery and invoice data from PDF and image documents
- Automatic and manual mapping of documents to orders and order line items
- Integration with SelectLine ERP for order import, status synchronization and goods receipt postings
- Traceable processing through separate analysis, mapping and posting processes as well as technical logging
- Development of a containerized end-to-end architecture with AI analysis, workflow automation and relational data storage
KEYWORDS: AI, document analysis, OpenAI, n8n, SelectLine ERP, FastAPI, Python, JavaScript, MariaDB, Docker, REST API, PDF, OCR, mapping, inventory management, goods receipt, workflow automation
Discover over 15,000 top freelancers
Statistics of experts using JavaScript
Aggregated from the professional profiles of matched freelancers.
Experience
18 years

Position duration
5.1 years

Positions per freelancer
12

Top business areas
Information Technology, Product Development, Project Management

Top industries
Information Technology, Banking and Finance, Retail

Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
89%
Master's degree or higher
52%
Doctorate
6%

Certifications per freelancer
2

Most common languages
German, English, French

Speak two or more languages
97%
Based on our profile pool as of 16 Oct 2026.
Daily rate distribution
The chart shows how the daily rates of experts in this technology are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows the share of experts charging within that range.
Average rates of experts 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 16 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
JavaScript experts industry focus
See which industries our matched freelancers work in most often — every figure is calculated live from the freelancers on FRATCH.
- Information Technology (94%)
- Banking and Finance (42%)
- Retail (38%)
- Automotive (37%)
- Manufacturing (36%)
- Professional Services (36%)
- Healthcare (30%)
- Education (30%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What JavaScript does
JavaScript is a programming language for interactive web experiences and event-driven applications. It runs in browsers and on servers through environments such as Node.js. Companies use it for customer portals, commerce interfaces, real-time products, internal tools and mobile applications built with web technologies.
Where it runs
Browser-based JavaScript handles user interactions, navigation, forms, state and API communication. On the server, Node.js supports web services, background workers, command-line tools and streaming workloads. Frameworks such as React, Vue, Angular, Next.js and Express shape how applications are structured, rendered and deployed.
Core ecosystem
Strong specialists work across language features, asynchronous execution, modules, package management and testing. They may use TypeScript for safer large codebases, npm or pnpm for dependency management, and tools such as Vite, Webpack, ESLint, Playwright and Jest. Knowledge of HTML, CSS, HTTP, REST and GraphQL is often central to the work.
Typical project needs
- Build accessible, responsive front ends for customer-facing products
- Create Node.js APIs, integrations and event-driven services
- Improve application speed, browser compatibility and search visibility
- Migrate legacy code to modern modules, frameworks or TypeScript
- Add automated tests and reliable delivery workflows
When to bring in experts
Companies often seek freelance expertise when a product needs a new interface, a backend service or a focused performance review. Specialists can join an existing team for a release, replace missing ecosystem knowledge or establish conventions for a growing codebase. Clear ownership of repositories, environments and acceptance criteria helps remote collaboration work well.
What strong specialists deliver
The strongest professionals understand the complete path from browser behavior to deployed service. They make deliberate choices about rendering, state, dependencies, security, accessibility and observability rather than adding libraries by default. Look for practical code samples, clear testing habits, thoughtful communication and experience diagnosing production issues in JavaScript systems.
Frequently asked questions
Quick answers to the questions that come up most around JavaScript.
JavaScript is used to create interactive websites, browser applications, server-side services, automation tools and cross-platform products. It can support both the user interface and backend services when paired with Node.js.
JavaScript is flexible and runs directly in browsers and server environments, while TypeScript adds static typing and is converted into JavaScript before execution. TypeScript can improve maintainability in large codebases, but both require strong language fundamentals and sound testing.
A strong JavaScript specialist usually understands HTML, CSS, browser APIs, HTTP and web accessibility. Depending on the project, useful adjacent skills include React or another front-end framework, Node.js, SQL, GraphQL, automated testing and cloud deployment.
The right level depends on the system’s complexity, not its label. A focused interface task may need a specialist with narrow front-end expertise, while a legacy migration or production platform calls for a professional who can assess architecture, testing, security and delivery risks.
Yes. JavaScript work is well suited to remote collaboration when the repository, issue tracking, environments and review process are organized. Teams should agree on communication routines, timezone overlap, documentation and how decisions are recorded.
JavaScript can be a practical choice when the same language is valuable across browser and server code, or when the product depends on rich real-time interaction. Python may be preferable for data-heavy workflows, scientific computing or teams centered on its established ecosystem.
Ask how the JavaScript specialist approaches testing, accessibility, performance, dependency choices and error handling. Review a relevant work sample, discuss a past production problem and listen for clear trade-offs rather than a list of preferred tools.
A JavaScript professional should clarify the runtime, framework, build system, testing approach and deployment process before starting. It is also important to understand browser support, coding standards, ownership of technical decisions and how the existing team handles reviews and releases.
The average hourly rate of freelancers who have used JavaScript in their recent projects is 93 €, which corresponds to a daily rate of about 745 € based on an 8-hour working day.
Of the freelancers who have used JavaScript in their recent projects, 89% hold at least a Bachelor's degree, 52% hold at least a Master's degree, and 6% hold a doctorate.
On average, freelancers who have used JavaScript in their recent projects have 18 years of professional experience, with a single engagement typically lasting around 5.1 years.
The most common languages among freelancers who have used JavaScript in their recent projects are German (98%), English (97%), and French (18%).
The most common industries among freelancers who have used JavaScript in their recent projects are Information Technology (94%), Banking and Finance (42%), and Retail (38%).
The most common business areas among freelancers who have used JavaScript in their recent projects are Information Technology (97%), Product Development (90%), and Project Management (53%).
Main locations of FRATCH Experts, who have recently used JavaScript
Our freelancers and interim experts are at home all over Germany — available on-site in Berlin, Hamburg, Munich and every major business hub, or fully remote. Choose a city to discover matched specialists, local market insights and up-to-date availability.
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