Refactoring Experts in Berlin
with precise AI matching and vetted, available freelancersHire experts who improve legacy code, simplify complex architecture and strengthen automated tests without disrupting delivery. FRATCH matches you quickly with vetted, available freelancers whose experience fits your codebase, stack and project goals.
Meet FRATCH Experts in Berlin, who have recently used Refactoring
Sascha B.
Last position:
Web Developer at GxPlex
- Built a customized MediaWiki instance, including installation, MySQL database, SSL, and automatic backups
- Set up user roles (Admin, Mod, Verified, User) and a permissions system
- FlaggedRevisions for editorial review workflows · Commenting and rating extensions
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
Imran A.
Last position:
Software Engineer II at LivePerson Germany GmbH
- Led development of 15+ microservices (Java 17, Spring Boot) driving customer interactions; migrated from on-prem to GCP Kubernetes, improving scalability and reducing infra cost by 20%.
- Optimized user services with CouchDB caching and API refactoring, cutting response times by 35% and enhancing customer experience.
- Implemented canary deployments, FluxCD GitOps, and CI/CD optimizations in GitLab, reducing release lead time by 25% and enabling zero-downtime rollouts.
- Set up Grafana health checks and Anodot alerts for latency, error, and throughput monitoring, reducing MTTR by 40%.
- Built secure APIs using OAuth2, DPoP, and Gatekeeper, integrated REST and GraphQL, and achieved 90%+ test coverage with unit and E2E tests.
- Mentored junior developers, promoted Agile best practices, and collaborated cross-functionally to deliver high-impact, reliable customer-facing features.
Daniel W.
Last position:
Frontend Lead & Product Owner
Hendrik W.
Last position:
Software Test and Maintenance Support at Anton Paar ProveTec GmbH
- Adding/creating test specifications
- Performing regression tests
- Performing release tests
- Analyzing Jira tickets
- Identifying software defects and fixing them with C#
Nikolai G.
Last position:
Clinical Data Manager at Dr. Falk Pharma
- Used OpenCode and AI-assisted software engineering to design, implement, refactor, test, and document an end-to-end RAW/SDTM/ADaM pipeline in R for Dr. Falk Pharma (07/2026), including metadata-driven transformations, automated validation rules and QC, traceability, and reproducible clinical outputs.
Nada S.
Last position:
Freelance Senior Frontend Engineer at Self-Employed
- Senior software engineer focused on React, TypeScript and AI-assisted product workflows
- Build frontend systems for complex SaaS products, internal tools and operational workflows
- Recent work includes AI evaluation tooling, support reliability analysis and developer-focused QA systems
- Available for freelance and contract engagements, especially remote-first projects
Lasya M.
Last position:
Data Engineer at Carelon Global Solutions (Elevance Health)
- Designed and implemented scalable ETL/ELT pipelines using Python, SQL, dbt, AWS and Informatica to ingest data from sources such as APIs, relational databases, and flat files into Snowflake, reducing pipeline runtime by ~30%.
- Migrated high-volume datasets from on-premises Teradata to Snowflake using AWS services (S3, Glue, Step Functions, IAM), ensuring data consistency and integrity.
- Applied Kimball methodology to design star and snowflake schemas, improving query performance and reducing Snowflake compute costs.
- Implemented automated data quality checks using SQL-based dbt tests and the Great Expectations framework to detect anomalies and enforce data correctness before production loads.
- Orchestrated ETL workflows in Airflow using Python and managed code deployments via Git with CI/CD best practices to increase deployment reliability and maintain pipeline uptime.
- Built interactive Power BI dashboards and curated datasets to enable data-driven decision-making for stakeholders.
- Maintained technical documentation in Confluence for ETL workflows, and led knowledge-sharing sessions for new joiners.
Fernando C.
Last position:
Senior Front-End Developer at Moss
- Moss is a spend-management platform for SMEs that bundles corporate cards, web-based applications and reimbursements, AP/procurement and advanced accounting in one place.
- Splits time across Accounting, Spending and Growth tribes, handling requirements gathering, public product design, coding, testing, debugging and internal apps.
- Participates in development and maintenance of the design system/UI kit and supports tooling, documentation and developer experience.
- Builds form-heavy UIs, drawer-based editing, high-density/resilient tables with server-side filters, pagination, column configurations, CSV/Excel export and bulk operations, all wired for permissions and auditability.
- Works with complex cross-entity relationships without a single-schema solution.
- Uses React, Redux Toolkit, styled-components, react-hook-form, React PDF, Vite, Lokalise, React Testing Library and Playwright.
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
Alessandro L.
Last position:
Vue Frontend Engineer at Savills
- Savills is one of the world's leading property advisors with 700+ offices worldwide. In Berlin, I built core digital solutions for the valuation business, replacing legacy Access-based workflows with an enterprise-grade web app built on Vue.js.
- Frontend Architecture & Scalability: Designed scalable Vue + TypeScript frontend architecture for internal enterprise applications, integrating a Symfony backend and interactive maps.
- Legacy Modernization: Led the modernization of legacy jQuery-based systems into maintainable Vue-driven applications, improving performance, maintainability, and efficiency across business workflows.
- PDF Report Workflow Automation: Engineered Twig-based automated PDF generation pipelines that reduced manual report preparation time by ~80%, saving approximately 12h per analyst/month.
- Design System & Frontend: Built a scalable SASS-based design system using mixins, maps, functions, and reusable UI patterns for consistency and long-term maintainability.
Julia W.
Last position:
Freelance Product Designer at B2B Web SaaS
- Prototyping the Minimum Viable Offering (MVO) for a SaaS solution for sound creation, aligned with the needs of digital and hardware designers.
- Conducting a product-market-fit analysis using global quantitative and qualitative market research
Hüseyin O.
Last position:
Interim Head of Project and Delivery Management at ELV Elektronik AG
- Development of a Target Operating Model for integrated hardware, firmware and software delivery.
- Establishment of a PDMO governance model with clear roles, responsibilities and decision rights.
- Improvement of portfolio and delivery transparency for senior management and executive management.
- Integration of a stage-gate product development process with agile software delivery.
- Redesign of release, quality, change and prioritization processes.
- Development of a scalable tooling and reporting architecture for Jira and PPM systems.
Daniel B.
Last position:
Senior Cloud Consultant and Developer at SDIA/Leitmotiv
- Consulting an NGO in the field of data center sustainability in publicly funded projects (BMUKN with NADIKI and Umweltbundesamt with SIEC)
- Development of Python APIs and web applications, deployment on AWS/ECS with Terraform
- Collecting power consumption metrics for servers, CPUs, GPUs running AI workloads
- Technologies used: AWS, EC2, ECS, Fargate, CloudMap, VPC, Route53, Lambda, EventBridge, CodeBuild/CodePipeline/CodeDeploy, Terraform, Docker, Linux, Bash scripting, Python, Flask, SQLAlchemy, SQL, MariaDB, InfluxDB, Telegraf, Prometheus, Zabbix, Kubernetes, Letsencrypt, certificate management
Sebastian S.
Last position:
Group Product Manager – Digital Platform Discovery at SPREAD.AI
- Developed and implemented organization-wide discovery framework based on Ulwick’s Outcome-Driven Innovation; enabled 7 Product Owners to systematically identify and quantify unrealized value through shared outcome language and opportunity scoring methodology
- Transformed Product Owner role from backlog clerks to strategic experimenters; established dedicated time budget for autonomous hypothesis testing and discovery activities
- Rebuilt customer journey maps to start at actual user need (tool selection phase) instead of platform entry point; eliminated manual data aggregation work previously done by project teams
- Implemented OKR framework across 4 product teams; defined quarterly objectives with measurable key results (e.g., 40% reduction in manual integration effort, self-service adoption increase)
- Unified 3 separate platform roadmaps through cross-team dependency mapping and shared service agreements
- Supported enterprise sales cycle with ROI modeling and technical due diligence for automotive and defense customers
Discover over 15,000 top freelancers
Statistics of experts using Refactoring
Aggregated from the professional profiles of matched freelancers.
Experience
17 years (Germany: 18 years)
Position duration
1.7 years (Germany: 2.9 years)
Positions per freelancer
11 (Germany: 13)
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
93% (Germany: 88%)
Master's degree or higher
48% (Germany: 53%)
Doctorate
4% (Germany: 8%)
Certifications per freelancer
2 (Germany: 3)
Most common languages
German, English, Russian
Speak two or more languages
97%
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 Berlin 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 Berlin 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 29 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
Refactoring 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 (49%)
- Retail (46%)
- Education (43%)
- Professional Services (37%)
- Manufacturing (34%)
- Healthcare (31%)
- Media and Entertainment (31%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What Refactoring Changes
Refactoring is the disciplined improvement of existing code without changing its externally visible behavior. It removes duplication, clarifies responsibilities and makes systems easier to test, extend and operate. Teams use it to reduce technical debt while continuing to deliver product work.
Where It Helps
Refactoring applies to monoliths, service-based systems, mobile applications, data pipelines and internal business software. Typical goals include:
- Breaking oversized modules into clear components
- Replacing fragile conditionals with simpler domain logic
- Improving APIs, naming and dependency boundaries
- Making tests faster, clearer and more reliable
Methods And Tooling
Strong specialists work inside the existing language, framework and delivery workflow. They use IDE inspections, static analysis, code search, test coverage, profilers and version control to make small, reviewable changes. Characterization tests, contract tests and continuous integration help protect behavior while the structure evolves.
When Companies Need Help
Companies bring in freelance expertise when a legacy codebase slows releases, when a product team inherits unfamiliar systems or when a migration exposes hidden dependencies. In Berlin, specialists may support local product, finance, mobility and industrial teams on-site, remotely or in a hybrid setup. Clear documentation and dependable communication matter in every arrangement.
What Good Work Looks Like
Effective refactoring starts with a measurable problem, not a preference for a particular style. A capable professional maps dependencies, establishes a safety net, agrees on boundaries and delivers changes in manageable slices. They explain trade-offs and leave the system easier for the permanent team to understand.
Skills Beside Refactoring
Refactoring expertise often includes software design, testing strategy, performance analysis, database evolution and release planning. Useful specialists can read unfamiliar code quickly and connect technical changes to business risk. They know when to refactor, when to replace a component and when to leave stable code alone.
Frequently asked questions
Questions about Refactoring? Start with the answers below.
Refactoring improves the internal structure of working software while preserving its observable behavior. Companies use it to remove duplication, reduce complexity, improve testability and prepare a codebase for new features or migrations.
Refactoring changes code in controlled, incremental steps while keeping existing behavior intact. A rewrite replaces a larger part of the system and carries greater uncertainty, so a specialist will usually compare both options against risk, delivery pressure and the quality of the current test coverage.
A strong Refactoring specialist usually understands software design, automated testing, version control and continuous integration. Depending on the system, knowledge of databases, APIs, performance profiling, observability and cloud delivery is also valuable.
Refactoring requires more than familiarity with clean-code rules. The right professional should have handled production code, traced dependencies and improved systems without breaking business behavior. Ask for examples that show measurable outcomes, careful sequencing and collaboration with an existing team.
Refactoring can work well remotely when the team shares repositories, tests, design notes and review practices. Berlin companies should agree on working hours, documentation and communication language early, especially when specialists collaborate across locations.
Refactoring is not automatically the right response to every old codebase. If the system is being retired, has no meaningful users or lacks a viable path to testing, replacement may be safer. A careful professional first identifies the business value and risks of changing it.
Look for smaller modules, clearer interfaces, stronger tests and fewer repeated rules rather than cosmetic formatting alone. Good Refactoring leaves behavior stable, makes future changes safer and provides a clear explanation of what changed and why.
A Refactoring engagement may deliver dependency maps, characterization tests, redesigned modules, simplified interfaces and a prioritized technical-debt plan. The exact deliverables depend on the codebase, but each change should be reviewable and connected to a concrete maintenance or delivery problem.
The average hourly rate of freelancers in Berlin, Germany who have used Refactoring in their recent projects is 97 €, which corresponds to a daily rate of about 776 € based on an 8-hour working day.
Of the freelancers in Berlin, Germany who have used Refactoring in their recent projects, 93% hold at least a Bachelor's degree, 48% hold at least a Master's degree, and 4% hold a doctorate.
On average, freelancers in Berlin, Germany who have used Refactoring in their recent projects have 17 years of professional experience, with a single engagement typically lasting around 1.7 years.
The most common languages among freelancers in Berlin, Germany who have used Refactoring in their recent projects are German (97%), English (97%), and Russian (20%).
The most common industries among freelancers in Berlin, Germany who have used Refactoring in their recent projects are Information Technology (100%), Banking and Finance (49%), and Retail (46%).
The most common business areas among freelancers in Berlin, Germany who have used Refactoring in their recent projects are Information Technology (100%), Product Development (97%), and Project Management (66%).
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.
Hamburg 
Munich 
Cologne 
Frankfurt 
Stuttgart 
Dusseldorf 
Nuremberg Request a free demo
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Philipp Thomaschewski
FRATCH CEO
