ESLint Experts in Germany
for clean, reliable JavaScript with fast AI matchingHire experts who configure ESLint for JavaScript and TypeScript codebases, integrate it with CI pipelines, and shape practical rules for React, Node.js and modern frontend projects. Get precisely matched with vetted, available freelancers quickly.
Meet FRATCH Experts in Germany, who have recently used ESLint
Khalid E.
Last position:
Lead Architect & Developer at kem-consulting
Development of an agent-based governance platform for the automated assurance of EU AI Act compliance and ODA-compliant orchestration of AI services in complex enterprise environments.
Design and implementation of an agent-based "Mission Control" framework (Aletheia Conductor) for autonomous state monitoring and process control.
Development of "Compliance-as-Code" (CaC) solutions based on OPA/Rego for system-wide enforcement of regulatory guardrails.
Integration of TM Forum ODA standards (TMF630, TMF622, TMF642) to ensure interoperability and standardization.
Building a highly available event-driven architecture using Redpanda and CloudEvents v1.0 for near-real-time event processing.
Implementation of an audit-proof "Evidence Chain" through cryptographic linking of trace logs in preparation for automated audits.
Tech Stack: Java 21 (Quarkus Native), TypeScript (Next.js), Redpanda (Kafka API), CloudEvents v1.0, OPA (Open Policy Agent) & Rego, TimescaleDB, ZincSearch, Redis, TM Forum ODA, Git, GitHub, Clean Code Development, Like-C4.
Alois R.
Last position:
Senior Fullstack Developer at brandung GmbH
- Opt-in RAG extension over tenant-owned data sources (SharePoint, Confluence) on existing multi-tenant enterprise AI platform
- Architecture: ADRs, solution evaluations, permission strategy, cost modeling
- End-to-end SharePoint and Confluence connectors: OAuth consent flows, token refresh, metadata sync, search integration
- Permission resolution: ACL indexing at ingestion and query-time verification (document-level security)
- Elasticsearch hybrid search (semantic + keyword) with RRF scoring
- RAG chat with context injection and source citations
- Stack: Elastic Cloud, Elasticsearch, Docker, Northflank, Next.js, React, TypeScript, Prisma, Microsoft Graph API, Atlassian REST API, OAuth 2.0
Martin R.
Last position:
Principal Fullstack Engineer / Tech Lead Fullstack Applications at Procure Ai Ltd
Procure Ai builds a procurement platform with tools to optimise purchasing and supplier management, delivering real-time analytics, cost-saving insights, and automated workflows. A common data model integrates and enriches data from multiple ERP and e-procurement systems including Ivalua, SAP, Coupa, WPS, and Jaggaer.
06/2025 – TODAY:
- Architecting and building a new AI-native procurement platform with document intelligence, an agent orchestration layer using Mastra and LLM-based workflow automation across supplier, intake and category management use-cases
- Shipped agentic engineering workflows across the development team, enabling LLM-assisted code generation and review automation, measurably reducing cycle time on repetitive development tasks
- Migrating the Design System from Material UI to shadcn/ui with Tailwind, improving consistency and reducing frontend build overhead
- Staying hands-on across frontend, backend and AI features while the engineering team grew from 10 to 20+ engineers: hiring, onboarding, 1:1s and mentoring
06/2020 – 06/2025:
- Joining as the first engineer after the two founders; shaping platform architecture and product vision from scratch in close collaboration with the CTO, growing the platform to serve 10 enterprise customers
- Leading fullstack feature development on the core procurement platform, with focus on Analytics, Search, and Autonomous Negotiations use-cases: defining MVP scope, aligning technical decisions to customer outcomes, and cutting work that wasn't delivering value
- Challenged a field-based configuration request for Autonomous Negotiations and instead built a node-based rule builder matching how category managers think in conditions and branches; later reused across other workflow and decision configuration use-cases
- Designing and implementing multi-tenant authentication and fine-grained authorisation based on organisational units
- Architecting and building a multi-tenant Admin Application for managing customer installations across environments, covering configuration, feature flags, and i18n
- Creating and maintaining a custom Design System built on Material UI, used across the full product
- Setting up and maintaining CI/CD pipeline and full QA suite (linting, unit, integration, and e2e testing)
- Architecting and implementing a multi-environment release process using Helm and Helmfile; owning infrastructure as code across AWS and Azure
- Researching and piloting new tools and frameworks; making build-vs-buy decisions to balance velocity, cost, and long-term maintainability
- Grew the engineering team from 4 to 10+ engineers, mentoring engineers and building a culture of ownership, code review and iterative delivery
Technologies: TypeScript, JavaScript, React, Node.js, Fastify, GraphQL, GraphQL Codegen, GraphQL Mesh, GraphQL Yoga, Hasura, Apollo Client, REST, CubeJS, PostgreSQL, Prisma, Elasticsearch, Meilisearch, Typesense, Kafka, Avro, Karapace, Kubernetes, Docker, Terraform, OpenTofu, Helm, Helmfile, GitLab CI, Keycloak, Better-Auth, OpenFGA, Nx, Vite, Vitest, Playwright, Testing Library, Storybook, Chromatic, Material UI, shadcn/ui, Tailwind, React Flow, recharts, i18next, Backstage, Grafana, Sentry, Zod, Claude Code, Codex, Mastra, Vercel AI SDK, Vercel AI Elements, AWS, Azure
Aurelia H.
Last position:
Software Full Stack Developer at INNIO Jenbacher GmbH & Co OG
- Implementing and extending an Electron app based on TypeScript, React and Node.js to display stream content and technical data
- Extending a Kotlin backend for message processing via Kafka
- Extending various React modules
- Programming custom solutions for customers, including testing
- Creating documentation
- Development in accordance with Scrum processes
Used skills: React, React Hooks, Jest, Vitest, Typescript, Electron, IntelliJ, Vite, Github, Jira, Node.js, yarn, npm, pnpm, Swagger, OpenAPI, Storybook, Docker, Prettier, Eslint, tailwindcss, i18n, GraphQL, CoPilot, Postgres, JSON, Sqlite, trpc, influxdb, Java, Spring, Kotlin, Kafka, Git, Sonarcube
Deniel H.
Last position:
Shareholder & Senior Engineer, Product and Go-to-Market at Continua Systems GmbH
Consulting and software for intralogistics automation (AGV/FTS) · Product lines AGVHub (independent AGV project consulting, layout editor) and OneBob (all-in-one business software for small teams)
- Designed and planned the implementation of a supervisory control system for a bakery production line (engineering customer, kick-off workshop 08/2025): three development stages, eight acceptance-ready milestones, batch traceability, AGV integration with RFID, Vue frontend.
- Discovery and requirements discussions with plant logistics and IT teams at industrial customers (life science, aviation, steel, engineering): translated supervisory control, ERP interface, and VDA 5050 requirements into architecture and requirements specification structures.
- Go-to-market automation and analytics: Bing and Meta campaigns, LLM-supported LinkedIn content pipeline, performance dashboards for partners and sales.
- Expert posts on LinkedIn about robotics and intralogistics: around 170,000 impressions across 41 posts (03 to 08/2026).
Stefan D.
Last position:
Frontend Developer – Sports Event and City Portal Projects at München Betriebs GmbH
- Developed an accessible, responsive website based on Figma designs for a major sports event in compliance with WCAG, BITV and EN 301 549
- Planned and set up the tool stack with Vite, Playwright, Docker and GitLab CI
- Worked on two existing projects (Vue.js & Nuxt), focusing on bug fixing, accessibility audits and developing new features
- Collaborated with Design and QA to consistently implement accessible UI patterns
- Advised on improving existing frontend architectures in terms of accessibility, performance and maintainability
Naveed M.
Last position:
Senior frontend developer at freelancer
Built charts for historical data, alarms, and downtime, plus enhanced interactive tables to efficiently track and compare oil-well performance. Eliminated 80% of high/medium security risks (Checkmarx) for the app. Optimized charting libraries, cutting usage from to 300–400MB for large data sets.
Thilo K.
Last position:
Senior Frontend Web Developer at Zeppelin GmbH
Selection and evaluation of different frontend frameworks for a headless CMS
Consulting the UI/UX team on the design system
Technologies:
Figma
Design Token
Tailwind
Storybook
React
NextJs
Strapi
AJAX
Confluence
CSS3
Docker
Eslint
Git
GraphQL
HTML5
IntelliJ/WebStorm
JAM Stack
Jasmine
Jenkins
Jira
JSON
JSX
Mocha
Native JavaScript (ES6)
NodeJS
Prettier
REST
REST APIs
SCSS
SSR
StyleGuides
SVG
TypeScript
Webpack
Reginald L.
Last position:
ERP System Redesign (web-based)
PHP and React redesign of a web-based ERP system.
- Development of the header and parts of the navigation
- Development of various modules in React, such as a calendar, chat and various tables
Ingo K.
Last position:
Co-Founder & Managing Director at Elterngeld Buddy GmbH
- Responsible for the entire software architecture of the parental allowance portal
- iOS and Android app with React Native and Expo, incl. push and OTA updates
- Store releases via App Store Connect and Google Play Console
- TypeScript monorepo for app, website and backend, web with Next.js and Tailwind
- Own promo, voucher and discount engine with contact and segment logic
- Payments via RevenueCat and in-app purchases, authentication with BetterAuth
- REST APIs based on OpenAPI, PostgreSQL with Prisma and Drizzle
- Self-hosting on Hetzner with Docker, Coolify, Terraform and GitHub Actions
- Tests with Vitest, Playwright and visual regression via Chromatic
- Observability via Grafana Cloud and error tracking with Sentry
- Performance marketing via Meta Ads, measured with custom event tracking
- Grew the product to 20,000 app users with a purchase rate of almost 12 %
- Managing Director since 04.2025, responsible for product and technology
Carsten R.
Last position:
Enterprise Product Owner at opta data IT GmbH
- Product responsibility for the central platform "one" as a group-wide web-based customer portal
- Coordination of the connection of 20 group companies to the product platform
- Derivation and steering of a group-wide product strategy and roadmap aligned with company goals
- Prioritization and bundling of strategic requirements from the various group companies
- Harmonization of different interests and moderation of complex decision-making processes at management level
- Ensuring the technical and business integration of the product into existing system landscapes, business processes, and business models
- Building transparent governance and decision-making structures for group-wide product development
- Representation of the product towards internal and external stakeholders at leadership level
Niklas G.
Last position:
Senior Full Stack Developer at L1R1 technologies GmbH
- Migrated the Billomat API integration to InvoiceNinja API, boosting system reliability by 33% for 1300 users.
- Established an ESLint configuration with Husky and lint-staged, resulting in a 23% decrease in code review issues and refined code consistency across 5 repositories.
- Improved team processes by refining the Kanban workflow.
- Optimized frontend performance, built a new CI/CD pipeline, and implemented AWS resource monitoring to strengthen deployment reliability and system observability.
Ibrahim H.
Last position:
Senior Full Stack / AI Engineer at Punktum Digital GmbH
- Context: Healthcare and laboratory teams required faster document analysis, treatment-planning support, and reliable AI workflows for MR/VR-assisted operations.
- Contribution: Built the AI healthcare platform, model/agent workflows, VR-glasses deployment platform, REST APIs, Next.js/React interfaces, and CI/CD pipelines.
- Impact: Delivered a production-ready AI product foundation that improved clinical document review, supported laboratory automation, and made VR fleet deployment manageable across environments.
Tech: TypeScript, Next.js, Node.js, React, Java, Spring Boot, Python, PyTorch, TensorFlow, Docker, PostgreSQL, OpenAPI, GitLab, GitHub Actions.
Kamran A.
Last position:
Frontend Developer at elio GmbH
- Developed custom frontend designs for clients like Cube, Douglas, and Leuze using HTML, SCSS, JavaScript (ES6), TypeScript, Vue.js, Twig, and Smarty.
- Customized and implemented themes for Shopware 5 and 6 e-commerce websites.
- Managed client communication, crafted project concepts, and provided ongoing support.
- Improved code quality and team efficiency through optimized Git workflows and regular QA.
- Supported other developers and addressed daily client inquiries.
Maciej W.
Last position:
Senior Software Engineer at EQS Group GmbH
- Further development of the compliance products
- Responsible for the Senior Software Engineer role
- Team size: 5 - 15 people
- Tools: TypeScript, Angular 18, Node.js, Nest.js, AWS, Kubernetes/Helm Charts/Docker, GitLab (CD/CI), Elasticsearch, MySQL, OpenAI, Java, RabbitMQ
Discover over 15,000 top freelancers
Statistics of experts using ESLint
Aggregated from the professional profiles of matched freelancers.
Experience
16 years
Position duration
1.8 years
Positions per freelancer
13
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Banking and Finance, Retail
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
91%
Master's degree or higher
35%
Certifications per freelancer
2
Most common languages
German, English, French
Speak two or more languages
100%
Based on our profile pool as of 29 Oct 2026.
Daily rate distribution
The chart shows how the daily rates of experts in this technology in Germany 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 in Germany using ESLint
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 29 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
ESLint 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 (100%)
- Banking and Finance (70%)
- Retail (58%)
- Healthcare (42%)
- Automotive (39%)
- Manufacturing (36%)
- Real Estate (36%)
- Education (30%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What ESLint does
ESLint is a static analysis tool for identifying problematic patterns in JavaScript and TypeScript code. It checks source files against configurable rules, reports errors and warnings, and can automatically fix many formatting and syntax issues. Teams use it to keep code consistent before changes reach review or production.
Where it fits
ESLint runs across frontend, backend and full-stack repositories. It supports React, Vue, Angular, Node.js and many other JavaScript ecosystems through plugins, shared configurations and parser integrations. It works alongside TypeScript, JSX, module systems and monorepos when the configuration reflects the project structure.
Ecosystem and tooling
- Configure flat config and reusable rule sets
- Connect TypeScript through the appropriate parser and plugins
- Apply React, import, accessibility and testing rules
- Run checks in editors, pre-commit hooks and CI
- Coordinate ESLint with Prettier and build tools
Modern ESLint setups often use flat configuration, shareable packages and editor integrations. Strong specialists understand rule conflicts, plugin compatibility, ignored files and migration from legacy configuration formats.
When companies need help
Companies bring in freelance expertise when a codebase has inconsistent rules, slow linting, noisy warnings or a difficult migration. Specialists can establish a baseline, separate blocking errors from gradual improvements, and make linting useful for every contributor. This is relevant for product teams, agencies and companies in Germany working across distributed or on-site teams.
Typical deliverables
- Audit existing rules and repository structure
- Create maintainable ESLint configuration
- Add JavaScript and TypeScript coverage
- Integrate checks into CI and pull requests
- Document exceptions and team conventions
A project may also require custom rules, package updates, codemods or support for several applications in a monorepo. The right setup should give clear feedback without turning harmless differences into constant friction.
What strong experts bring
Strong professionals read the codebase before changing its rules. They can explain why a rule matters, test configuration changes against real files, and distinguish linting from formatting and type checking. They also know when to use an existing plugin, when to write a focused custom rule, and how to improve adoption through clear documentation and measured rollout.
Frequently asked questions
Not sure where to start with ESLint? These answers cover the essentials.
ESLint examines JavaScript and TypeScript source code for patterns that may indicate errors, unsafe practices or inconsistent style. It can report findings in editors and CI and automatically fix selected issues. Teams use it to make code review more focused and maintain quality across repositories.
ESLint focuses primarily on code quality, possible defects and enforceable programming conventions. Prettier is a formatter that applies a consistent presentation style. They are often used together, with configuration chosen to prevent conflicting rules.
ESLint supports TypeScript and React through parsers and ecosystem plugins. A suitable setup can check JSX, hooks, imports, accessibility concerns and TypeScript-specific patterns. The specialist should align these rules with the framework, compiler settings and repository layout.
A strong ESLint specialist usually understands JavaScript, TypeScript, package management and Git workflows. Useful adjacent skills include React or Node.js, CI systems, monorepos, Prettier and automated testing. Knowledge of editor integrations also helps teams adopt the rules consistently.
The required background depends on the repository’s size, configuration history and migration risk. A simple setup may need focused configuration work, while a large monorepo benefits from someone who has handled plugins, custom rules and gradual enforcement. Review relevant deliverables rather than relying on a generic label.
ESLint work is usually well suited to remote collaboration because configuration, findings and code changes are visible in the repository. Clear tickets, pull requests and written decisions keep the work moving across locations. For teams in Germany, German or English communication can be agreed based on the project and stakeholders.
Ask whether ESLint catches meaningful issues without creating excessive noise. A quality setup has documented rules, reliable CI behavior, sensible exceptions and a clear relationship with formatting and type checking. The specialist should be able to demonstrate the reasoning behind key rules and explain how the configuration will evolve.
Extend ESLint when the existing configuration is broadly sound but lacks coverage for a framework, language feature or workflow. A deeper redesign may be better when warnings are ignored, plugins conflict or legacy configuration blocks upgrades. The decision should follow an audit of actual code, team habits and delivery risks.
The average hourly rate of freelancers in Germany who have used ESLint in their recent projects is 89 €, which corresponds to a daily rate of about 713 € based on an 8-hour working day.
Of the freelancers in Germany who have used ESLint in their recent projects, 91% hold at least a Bachelor's degree and 35% hold at least a Master's degree.
On average, freelancers in Germany who have used ESLint in their recent projects have 16 years of professional experience, with a single engagement typically lasting around 1.8 years.
The most common languages among freelancers in Germany who have used ESLint in their recent projects are German (100%), English (100%), and French (12%).
The most common industries among freelancers in Germany who have used ESLint in their recent projects are Information Technology (100%), Banking and Finance (70%), and Retail (58%).
The most common business areas among freelancers in Germany who have used ESLint in their recent projects are Information Technology (100%), Product Development (100%), and Quality Assurance (64%).
Main locations of FRATCH Experts, who have recently used ESLint
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 Leipzig Dortmund Essen Bremen Dresden Hanover Nuremberg Request a free demo
Get in touch with the FRATCH team and we will get back to you within 4 hours.
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Philipp Thomaschewski
FRATCH CEO
