Refactoring Experts in Hamburg
matched in minutes from over 15,000 CVs with the power of AIHire experts who clean up legacy code, simplify complex class and module design, and improve test coverage without changing what the software does. From code refactoring and design cleanup to safer releases and long-term maintainability, get fast, precise matching with vetted, available freelancers.
Meet FRATCH Experts in Hamburg, who have recently used Refactoring
Niko Schmuck
Last position:
Developing Architect, Technical Lead "gridlytics" at HH Energienetze
- Building a data integration platform for high, medium, and low voltage assets for contextual analysis of time series with master data from the SCADA control system (IEC 60870 104), INIS, and SAP.
- Responsibility for the architecture and implementation of the solution, as well as sparring partner for the Product Owner.
- Use of Kotlin, Spring Boot, Maven, TimescaleDB, PostgreSQL, liquibase, Elements IoT, Docker, Kubernetes, Grafana, Python, jupyter, and various API gateways.
Rutger Boels
Last position:
Partner & Managing Director at AI.IMPACT
- Building an AI & Data Consultancy Practice with the goal of helping European companies adopt Artificial Intelligence and modern data platforms
- End-to-end further development of a production system using modified coding agents (OpenCode). Tech stack: Kubernetes, Argo, Keycloak, Typescript, Grafana, GitOps, DevOps, Playwright
- Internal research project on the use of coding agents in the field of mathematical logic for creating formal models. Use of Cursor IDE and Codex, Codex CLI. Architecture design, quality control and refactoring, as well as writing code and tests. Repository (open source) available pre-launch
- Research on the role of mathematical logic as a formal language that connects IT and AI with business processes
- Project lead for collecting and deploying parking recommendations for rail vehicles with significant savings potential based on real-time data in a mobility and transport company
- Project lead for collecting and distributing process measurement points for real-time control in a mobility and transport company
- Deputy application owner for an app used for communication in the dispatching and provision of rail vehicles
Bogdan Melnychuk
Last position:
Tech Lead at cirplus
- Sole technology owner, leading architecture, development, operations, and infrastructure. Leveraging AI to accelerate work in areas like front-end and design.
- Built full-stack solutions (backend, React front-end) with CI/CD pipelines and observability standards, setting the foundation for an engineering organization.
- Delivered AI-driven features using LLMs, automating supplier–buyer matching, lead generation, email campaigns, and reducing manual effort.
- Reduced cloud costs by 90% by migrating the system to an AWS serverless architecture
Matthias Eymers
Last position:
Lead Android Developer at Star Finanz-Software Entwicklung und Vertriebs GmbH
- Further development of the Android app "StarMoney"
- Major XML to Compose redesigns
- Introduction of new technologies and architecture
- Implementation of instant bank transfer
- Development following the agile Scrum process
Özgür Ertekin
Last position:
Senior Software Developer at Cubic Transportation Systems
- Designed, implemented, and deployed two new microservice components, enabling new business functionalities and supporting regulatory compliance for enterprise clients.
- Ensured business continuity and system reliability within a high-transaction, microservice-based environment, taking ownership of backend systems under dynamic business conditions.
- Identified and refactored inefficient implementations, applying cost-benefit analysis to optimize performance, maintainability, and code quality.
Holger Dettmar
Last position:
Software Developer
- Gained familiarity with complex legacy software for controlling central ship systems (Ada, Java, C++).
- Implemented tests to identify memory leaks.
- Refactored existing project content and tests to object-oriented standards.
- Identified and fixed bugs in existing distributed Java and C++ applications on a DONAR/CORBA network.
- Products: Squish, NetBeans, MKS Integrity, DONAR, CORBA, DOORS, Windchill.
- Skills: Python, Java, Linux, C++, Ada.
Tarik Hennings
Last position:
Technical Product / Digital Asset Owner at Sodexo Pass & Benefit Services
- Migration of 3 DE/AT payment iOS/Android apps and web portal to global solution
- Performed a fit gap analysis for 6 consumer apps vs. global solution
- Managed the migration project to global CWC solution, developed end-to-end tests for backend systems, Pi Planning, release planning
René Schmidt
Last position:
CRM Developer at CiS GmbH
- Developed a greenfield CRM for managing incoming customer requests for a municipal utility provider
- Implemented with PHP/Symfony 5, EasyAdmin, Doctrine ORM and Oracle XE
- Handed over to CiS GmbH after initial groundwork as planned
Matti Lange
Last position:
FullStack Developer at Ing DiBa GmbH
- Developed and extended Fiori UI5/WebApps for areas such as general ledger, asset accounting, and others.
- Implemented backend logic and OData services for a new S/4 HANA system
- Analyzed the current state of SAP GUI transactions and derived suitable standard and custom developments
- Designed technical concepts and implemented custom UI5 apps in the Fiori Launchpad
- Automated OPA tests, extended and adapted standard Fiori apps
- Documented and created developer manuals in the wiki
- Conducted code reviews, approved and delivered software units via GitLab and SAP transports
Daniel Pape
Last position:
Professional Development
Attained AWS Certified Cloud Practitioner certification.
Mastered Rust through self-study, including books, online courses, and open-source contributions.
Developed a serverless web application using AWS (RDS, Lambda, Polly, Amplify) and TypeScript/React/D3, managed infrastructure with CDK.
Continuously stayed updated with industry trends through self-education, webinars, and workshops, exploring Data Mesh and FastAPI.
Martin Wilhelmi
Last position:
Security Auditor at MissionMe
- Environment: AWS, Ruby on Rails, GraphQL, React Native
- Penetration test for Backend, Android-App and iOS-App
Leif Rumbke
Last position:
rio configurator at Atelier Havana
- Platform: Web.
- Technologies: HTML5, CSS, TypeScript.
- Development.
- Various updates.
Discover over 15,000 top freelancers
Statistics of experts using Refactoring
Aggregated from the professional profiles of matched freelancers.
Experience
20 years (Germany: 18 years)
Position duration
2.3 years (Germany: 2.9 years)
Positions per freelancer
21 (Germany: 13)
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Transportation, Automotive
Certification focus areas
Information Technology, Business Intelligence, Product Development
Bachelor's degree or higher
70% (Germany: 89%)
Master's degree or higher
70% (Germany: 53%)
Doctorate
20% (Germany: 7%)
Certifications per freelancer
3
Most common languages
German, English, French
Speak two or more languages
100% (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 Hamburg 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 Hamburg using Refactoring
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 refactoring means
Refactoring is the disciplined change of existing code so it becomes easier to read, test, and extend. The goal is to improve structure without altering behavior. Companies use it when software still works, but every new change has become slow or risky.
Typical work
- Break large methods into smaller, clear units
- Replace duplicated logic with shared components
- Rename confusing classes, functions, and variables
- Simplify inheritance, dependencies, and module boundaries
- Prepare code for safer testing and future features
Tooling and workflow
Strong specialists work close to the IDE, version control, automated tests, and static analysis. In Java, this often means cleanup around Spring, Maven, Gradle, and JUnit; in JavaScript, around TypeScript, linting, and test suites. Good refactoring is incremental, reviewed, and easy to roll back.
When companies bring in help
Teams usually ask for freelance refactoring expertise when delivery slows down, bugs keep returning, or a release feels too fragile. It also helps before a migration, a major feature, or a handover from one team to another. In Hamburg, this is common in commerce, logistics, media, and internal enterprise systems that must keep running while code changes.
What strong professionals do
- Keep behavior stable with focused tests
- Reduce coupling instead of moving code blindly
- Spot design smells, not just syntax issues
- Explain trade-offs clearly to product and engineering teams
- Leave the codebase easier to maintain than before
Why it matters
Refactoring is not a cosmetic cleanup. It is a way to protect delivery speed, reduce technical debt, and make future work cheaper to change. The best results come from specialists who understand the domain, the risks, and the release process, then improve the code in small, safe steps.
Frequently asked questions
Everything clients usually want to know about Refactoring, in one place.
Refactoring is used to improve the structure of existing code without changing what it does. Teams use it to reduce complexity, remove duplication, and make future changes safer. It is especially useful when a codebase still works but is getting harder to maintain.
Refactoring keeps the same system in place and improves it step by step. A rewrite starts over and usually carries much more risk because behavior, data handling, and edge cases must be rebuilt. If the current software already solves the business problem, refactoring is often the safer choice.
A strong refactoring specialist helps when releases slow down, tests are weak, or every change touches too much code. Companies also bring in help before a platform migration, a merger of modules, or a cleanup after rapid feature work. The best time is before technical debt blocks delivery.
A good refactoring professional usually brings testing, code review discipline, and a strong grasp of design patterns and architecture boundaries. Familiarity with the language ecosystem matters too, such as Java and Spring, TypeScript, .NET, or Python, depending on the stack. Clear communication is just as important as code changes.
A refactoring expert needs enough context to protect behavior and prioritize the right parts of the codebase. They do not need every business detail on day one, but they do need access to tests, logs, release history, and the team’s pain points. The more critical the system, the more domain context matters.
Yes, refactoring work is often done remotely because it depends on code access, review feedback, and test runs more than on physical presence. For teams in Hamburg, a hybrid setup can help during sensitive workshops, but it is not required for most tasks. Good written communication is essential either way.
With refactoring, quality shows up in simpler code, stable tests, and fewer hidden dependencies. You should see smaller units, clearer names, and changes that are easier to review. If the code is prettier but behavior becomes uncertain, the work is not finished.
If a refactoring effort would touch too much unstable code, a targeted replacement may be better for one module or service. Even then, teams often refactor the boundaries first so the transition is controlled. The right expert helps decide where to clean up and where to rebuild.
The average hourly rate of freelancers in Hamburg, Germany who have used Refactoring in their recent projects is 98 €, which corresponds to a daily rate of about 784 € based on an 8-hour working day.
Of the freelancers in Hamburg, Germany who have used Refactoring in their recent projects, 70% hold at least a Bachelor's degree, 70% hold at least a Master's degree, and 20% hold a doctorate.
On average, freelancers in Hamburg, Germany who have used Refactoring in their recent projects have 20 years of professional experience, with a single engagement typically lasting around 2.3 years.
The most common languages among freelancers in Hamburg, Germany who have used Refactoring in their recent projects are German (100%), English (100%), and French (25%).
The most common industries among freelancers in Hamburg, Germany who have used Refactoring in their recent projects are Information Technology (100%), Transportation (50%), and Automotive (42%).
The most common business areas among freelancers in Hamburg, Germany who have used Refactoring in their recent projects are Information Technology (100%), Product Development (100%), and Quality Assurance (75%).
Main locations of FRATCH Experts, who have recently used Refactoring
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 
Munich 
Frankfurt 
Stuttgart 
Dusseldorf 
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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We always have the time for a call or email!
Philipp Thomaschewski
FRATCH CEO
