Next.js Experts in Cologne
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Meet FRATCH Experts in Cologne, who have recently used Next.js
Halil Oeztoprak
Last position:
Senior Cloud Operations & DevSecOps Engineer (Azure / Terraform / CI-CD) at KfW Bankengruppe
Regulated environment within a German banking group (approx. 8,500 employees, hybrid cloud strategy).
Responsible for operating, provisioning, and continuously securing business-critical platforms – including a GenAI chat application, a big data/AI platform, and data science workspaces based on Azure Virtual Desktops and VMs. Ownership of Azure DevOps projects for ShaiHulud and React2Shell, as well as BSI alerts – Security Operations improvements across the SDLC.
Deployment responsibility for the GenAI chat application, big data/AI platform (BDAI), and data science workspaces (AVD/VM-based) in the respective landing zones.
Deployment & release management: end-to-end responsibility for deploying portal and service applications across multiple Azure landing zones, including technical approvals, compliance with development team deployment guidelines, and ensuring ITIL-based change and release processes via ServiceNow.
Azure landing zones & network architecture: design, provisioning, and operation of Azure landing zones for 3-tier web applications with enhanced network segmentation, VNet peering, hub-and-spoke architectures, private endpoints, and firewall integration across separate subscriptions and tenants.
Azure DevOps governance & operations: ownership of the Azure DevOps organization, including projects, repositories, and CI/CD pipelines; implementation of governance requirements such as branch policies, approval gates, permission models, and audit-ready operating structures.
Infrastructure as Code (Terraform): design, implementation, and operation of a modular Terraform architecture for standardized cloud infrastructure deployment, including state management, provider versioning, reusability, and policy-as-code approaches.
CI/CD pipeline engineering: design, operation, and optimization of complex YAML-based CI/CD pipelines with multi-stage deployments, template standardization, self-hosted agents, integrated secret management, and automated quality and security checks.
Git migration & platform consolidation: planning and execution of repository and pipeline migration from Azure DevOps to GitLab CI/CD, including automated scripts, full Git history transfer, pipeline porting, and platform consolidation.
Container & platform operations (AKS): operation and security assessment of containerized workloads on Azure Kubernetes Service, centralization of on-premises container registries for ACR.
OpenShift (OCP) security reviews: security assessment of code baselines, build pipelines, and deployment processes for on-premises OpenShift clusters with critical applications, and derivation of specific hardening recommendations.
Shift-left security & DevSecOps transformation: introduction of a company-wide shift-left approach for early security integration in development and deployment processes, enabling developers to perform self-led security checks and sustainably reduce vulnerabilities before production (IDE integrations, pre-commit hooks, local scanners).
Software supply chain security: analysis and mitigation of supply chain risks in NPM- and Yarn-based applications through dependency audits, CI/CD pipeline hardening, token rotation, and restriction of risky build and lifecycle mechanisms.
Frontend & framework security (React / Next.js): security assessment and coordination of critical vulnerability remediation across platform applications and web frameworks, including coordination and complementary technical mitigations with all teams following BSI alerts.
Software composition analysis (SCA): introduction and operation of automated vulnerability scans for container images, pipelines/artifacts, and third-party dependencies, including SBOM exports within CI/CD pipelines.
SAST/DAST integration: design and piloting of static and dynamic application security tests in close collaboration with security architecture and development teams, for continuous improvement of code and runtime security, and establishing operational acceptance tests.
Artifact & registry consolidation: analysis and consolidation of all package and container repositories for service applications and AKS workloads, aiming for a centralized, secured registry strategy with centralized vulnerability scanning and governance.
Dependency-Track & SBOM strategy: advising the compliance board on introducing a central SBOM and vulnerability management platform to increase enterprise-wide dependency transparency and accelerate CVE response capability.
CI/CD pipeline hardening: security analysis and cleanup of the existing pipeline landscape by removing unused pipelines, improving secrets hygiene, implementing least-privilege principles, and isolating build agent environments.
Azure Web Application Firewall (WAF) optimization: analysis and tuning of existing Azure WAF rules (OWASP Top 10 Core Rule Set, DSR/SDC, custom rules) to defend against known vulnerabilities and exploit patterns, including reducing false positives and improving threat detection.
Documentation & stakeholder communication: creating and maintaining technical documentation, runbooks, and architecture overviews in Jira and Confluence, as well as active knowledge transfer between operations, development, security, and compliance stakeholders.
Ralph Konitzer
Last position:
Product Owner / Business Owner at AXIS Management Consulting GmbH
- Full product responsibility from a business perspective: requirement analysis, UX design, product strategy, and go-to-market implemented without an internal dev team using fully AI-supported development (Claude Code / Anthropic)
- Technical differentiation: KRITIS-compliant air-gapped deployment (Windows/NSIS), GDT interface for PVS integration, DATEV-LODAS export for payroll
- Managed pilot operation with initial external client (Dormagen medical practice): structured requirement gathering, test support, error analysis, and release management
- Developed rollout and sales strategy for market entry in the segment of private practices and small medical centers
- Human-in-the-Loop development principle: business decision → AI implementation → manual review → approval → release – each sprint documented in Jira (TIME project), every change traceable via co-authored commits
- Product outcome: Tauri/Rust desktop app with GDT watcher, multi-tier model (Starter/Professional/Enterprise), cloud mirror on Hetzner/Traefik, complete ISMS framework based on ISO 27001 and BSI basic protection as product foundation
- Direct method validation for the test manager role: hands-on experience with quality assurance of AI-generated products from a user perspective, review gate discipline, release approval under GDPR and the EU AI Act
Christian Hunkirchen
Last position:
Developer at Opereon Consulting GmbH
- Developed a shop website
- Integrated an AI language model
- Developed tools for AI-powered webhooks
- Technical tools: REACT.js; Elevenlabs; MCP; n8n; HTTP
Hans Reinl
Last position:
Engineering and Leadership Consultant at Self-employed
Leveraging 15+ years of high-scale platform architecture and engineering leadership to consult with companies, focusing on enhancing their engineering capabilities and accelerating adoption of the AI-native web.
- AI & Machine Learning: Hands-on architecture and implementation using Vercel AI SDK, Next.js, Supabase, and Serverless architectures to build production-ready AI applications.
- Reference Architecture: Designed and implemented a full-stack, conversational coach (N+One AI Coach) based on Next.js and Vercel Edge Network for personalized training, demonstrating expertise in performant serverless applications and AI-powered experiences.
- Agentic Systems & Data Processing: Developed agentic-led, low-code crawling and indexing processes for fiber internet network information, showcasing proficiency in automation, LLM integration, and data structuring.
Sebastian Thees
Last position:
Software Engineer / Cloud Engineer at OC Fulfillment GmbH
- Hybrid role as the first software engineer in the company to bootstrap the organization, laying out technical foundation and advising management on organizational aspects.
- Set up the SaaS platform architecture, selected languages and tools, and designed processes to deliver customer value quickly and reliably.
- Designed and implemented build and continuous deployment pipeline with multi-tenant approach enabling extreme scaling of the SaaS platform.
- Established initial ITSM and support processes, provided monitoring and alarming, and participated in the on-call team.
- Proposed new approaches to scale the platform and improve backend interfaces to mitigate bugs and communication overhead.
- Mentored new employees and served as a trustful team member and lateral leader.
- Conducted interviews for technical roles.
- Used technologies: Typescript, Node.js, Bash, Google Cloud Platform (App Engine, Cloud Run, Cloud Functions, Google Endpoints, Firebase), GitHub Actions, Docker, Terraform, MongoDB, Firebase, REST APIs, GraphQL.
Allal Kharaz
Last position:
Java Senior Full Stack Developer at Insurance Ă–RAG
- Further development of a policy administration system (contract/claims) for the legal expenses insurer Ă–RAG.
- My role: Senior Software Developer.
- The team consists of 12 developers.
- Technologies used: Java 8/21, Java EE, Quarkus, WebLogic, JPA, RabbitMQ, JTA, CI, CD, Jenkins, DB2, Maven, Jenkins, GIT (bitbucket) later GitLab, Junit, Elasticsearch, Mockito, Jira, SonarQube, Scrum, React, Workflow
- Migration and modernization of legacy systems: rewrote C and C++ code in Java to improve maintainability, scalability, and performance. Refactored Python into Java, including optimization and integration into modern architectures.
- Study on the use of AI (Codex) for implementing a Java feature. The goal is to compare the time spent and productivity of AI-supported development with a classic implementation by a developer. The results should show how strongly the use of AI affects development time and efficiency.
- Development of the following tariff calculators for the years 2024/2026: private, companies, doctors, farmers, owner-occupied G + H, landlords, traffic, club, top managers, sales representatives, special criminal law, savings bank, municipal, BayGT, doctors, Dehoga
Discover over 15,000 top freelancers
Statistics of experts using Next.js
Aggregated from the professional profiles of matched freelancers.
Experience
16 years (Germany: 15 years)
Position duration
1.3 years (Germany: 1.8 years)
Positions per freelancer
10 (Germany: 11)
Top business areas
Information Technology, Product Development, Operations
Top industries
Information Technology, Healthcare, Professional Services
Certification focus areas
Information Technology, Project Management, Product Development
Bachelor's degree or higher
75% (Germany: 88%)
Master's degree or higher
50% (Germany: 49%)
Certifications per freelancer
9 (Germany: 2)
Most common languages
German, English, Arabic
Speak two or more languages
83% (Germany: 96%)
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 Cologne 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 Cologne using Next.js
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
What Next.js is
Next.js is a React framework for building fast web applications, marketing sites, and product front ends. It adds routing, server rendering, static generation, and API handling on top of React. Teams use it when they need strong performance and clean structure.
What it powers
- Customer-facing websites with SEO needs
- App dashboards and authenticated product areas
- Server-rendered pages and static pages
- Content-heavy sites with headless CMS data
- Hybrid apps that mix edge, server, and client rendering
Core ecosystem
Strong Next.js specialists work with React, TypeScript, Node.js, and common tooling around testing, linting, and deployment. They know the App Router, page routing, API routes, middleware, image optimization, and caching patterns. They also handle build setup and environment management across dev and production.
When companies bring help
Companies usually look for freelance Next.js expertise when a launch is near, a React app needs better SEO, or an existing codebase has grown hard to maintain. In Cologne, that often means support for agency projects, SaaS products, and internal tools with German and English content. Remote work fits most tasks, while on-site time helps with discovery and handover.
What strong specialists do
A strong professional writes clear component boundaries, keeps data flow predictable, and avoids unnecessary client-side rendering. They pay attention to Core Web Vitals, accessibility, error handling, and clean deployment pipelines. They also know when to use server components, cached data, or static output instead of forcing everything into the browser.
Good fit for the project
- You need a new Next.js app or a major rewrite
- Your site is slow, hard to index, or difficult to extend
- You need integration with CMS, commerce, auth, or analytics
- You want cleaner code ownership and safer releases
- Your team needs temporary specialist support with React architecture
Frequently asked questions
The facts hiring teams ask for most often when it comes to Next.js.
Next.js is used for websites and applications that need React plus strong rendering options. Companies pick it for product front ends, landing pages, content sites, and hybrid apps that need both speed and SEO. It is a good fit when the browser alone is not enough.
Next.js builds on React, but it adds routing, server-side rendering, static generation, and production-ready conventions. Plain React gives more freedom, but also more setup work. Teams choose Next.js when they want structure and built-in performance options without assembling everything themselves.
Next.js work becomes more specific when the project needs the App Router, server rendering, caching, deployment tuning, or CMS-driven pages. A general React specialist may be enough for a simple interface, but Next.js projects often need deeper knowledge of rendering strategy and backend touchpoints. That matters when SEO, speed, or release reliability are important.
A strong Next.js professional usually also knows React, TypeScript, Node.js, HTML, CSS, and API integration. Experience with testing, accessibility, content systems, authentication, and deployment tools is also useful. For many projects, they should be able to work across both front-end structure and server-side concerns.
Next.js projects vary a lot in scope. A small marketing site may need only focused support, while a large product rewrite needs someone who understands architecture, data flow, and performance trade-offs. The more your app depends on routing, server components, or content pipelines, the more specialist input helps.
Yes, Next.js work is often well suited to remote collaboration because most tasks are code, review, and deployment focused. For teams in Cologne, that can make it easier to combine local workshops with remote delivery. On-site time still helps when a project starts with discovery, stakeholder alignment, or handover.
Look at how the Next.js freelancer explains rendering choices, code structure, and trade-offs. Strong work shows up in fast pages, clear component boundaries, reliable data handling, and clean deployment practices. Good specialists can explain why they chose server rendering, static output, or client-side logic for a specific case.
People often search for Next.js as “Next” or “NextJS,” but the technology is the same framework from the React ecosystem. What matters is whether the specialist understands the current routing model, server components, and modern deployment patterns. For older codebases, they should also be able to work through legacy pages-based setups and migration steps.
The average hourly rate of freelancers in Cologne, Germany who have used Next.js in their recent projects is 107 €, which corresponds to a daily rate of about 858 € based on an 8-hour working day.
Of the freelancers in Cologne, Germany who have used Next.js in their recent projects, 75% hold at least a Bachelor's degree and 50% hold at least a Master's degree.
On average, freelancers in Cologne, Germany who have used Next.js in their recent projects have 16 years of professional experience, with a single engagement typically lasting around 1.3 years.
The most common languages among freelancers in Cologne, Germany who have used Next.js in their recent projects are German (100%), English (83%), and Arabic (17%).
The most common industries among freelancers in Cologne, Germany who have used Next.js in their recent projects are Information Technology (100%), Healthcare (67%), and Professional Services (67%).
The most common business areas among freelancers in Cologne, Germany who have used Next.js in their recent projects are Information Technology (100%), Product Development (100%), and Operations (83%).
Main locations of FRATCH Experts, who have recently used Next.js
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.
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