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Data Quality Experts in Zurich

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Hire experts who assess data accuracy, completeness and consistency, build validation rules, and improve master data processes across business systems. FRATCH matches you quickly with precise, vetted and available freelancers for your Data Quality project.

Meet FRATCH Experts in Zurich, who have recently used Data Quality

Verified expert

Patrick B.

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Senior Software Engineer

Zürich
Patrick B.

Last position:

Senior Software Engineer at On AG

  • Since August 2025 I'm working on the Conversational AI team. We are developing an internal platform for the future of Conversational Ecommerce, powering other teams to use the Agents in their user experience. I'm deeply focused on the architecture of this project, with a particular focus on the monitoring and live evaluation of the agents.
  • Played a pivotal role in business-critical operations, including Adyen client upgrades, multi-account configuration for app releases, domain migration support, and implementing a crucial BFCM hotfix to resolve a 10-minute update query (on the checkout workflow) that was blocking sales.
  • Served as a key member of the On-Call rotation for over a year, leading >15 incidents, contributing to system stability, and enhancing distributed tracing via New Relic integration, deepening system-wide understanding and operational excellence.
  • Conceived and delivered an MVP for a "Low Stock in Key Variants" (LSKV) index within two weeks as part of the Conversion Rate Taskforce, using statistical analysis of size curves to identify OOS products; this initiative led to a (0.9%) CVR improvement post-handover.
  • Led major performance and stability initiatives, including a Ruby upgrade (YJIT, Jmalloc) that slashed average response times from 220ms to <100ms, and initiated an "Order Table Cleanup" project to manage 10M+ order records, ensuring SOX compliance and database health.
  • Architected and delivered a scalable CloudFlare Worker solution for critical Apple Pay domain validation, mitigating operational risks and establishing a best-practice, automated workflow that was subsequently leveraged by multiple teams, demonstrating cross-functional impact
  • Drove substantial evolution of the core e-commerce backend through consistent, high-impact contributions (130+ merged PRs), spanning critical feature delivery, complex system optimizations, and enhancing platform stability."
Verified expert

Charles S.

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Data & Analytics Product Manager | AI-Augmented Data Products | Executive BI Delivery | Financial Services

Zürich
Charles S.

Last position:

Data Delivery Lead at Westpac

  • Owned and managed the product roadmap and backlog for the Consumer Banker reporting framework, prioritising features and driving iterative delivery of banker scorecards and network performance reporting in an agile environment.
  • Developed and iterated portfolio financial reporting on a weekly cadence based on stakeholder feedback, replacing manual PowerPoint packs and saving the program hours of effort weekly.
  • Integrated Generative AI (MS Copilot) to automate data lineage documentation across a large legacy codebase, eliminating est. 6 months of analyst effort and accelerating data governance outcomes.
  • Led a unified data delivery approach and standards across five UNITE initiatives (~CHF 115m portfolio) supporting consolidation of legacy systems into the Digital Banker platform.
  • Led cross-functional delivery team of 3 while also drawing on BA and DA talent pools, coordinating analytical resource across workstreams to accelerate data, reporting & governance outcomes.
Verified expert

Lenka P.

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Enterprise HR Project Manager | Workday Solution Architect

Zürich
Lenka P.

Last position:

Workday Technical Architect at Swisscom

(Project Assignment via consulting company HighPerfPeople)

  • Lead the Workday Optimization Board, defining and presenting the Workday enhancement roadmap; drive prioritization based on stakeholder input, system analysis, and identified capability gaps.
  • Challenge business requirements and proposed solutions to ensure alignment with long-term architecture principles, platform strategy and operational sustainability.
  • Own the complete lifecycle of Workday enhancements from business discovery and solution design through implementation governance, testing strategy, deployment and stabilization.
  • Act as functional/technical lead for key product areas including Peakon, Workday Learning, and Talent/Performance processes (e.g., year-end cycle, goal setting).
  • Define and implement Workday branding and communication standards (templates, notification design, messaging structure) to improve consistency and employee experience.
  • Build and enhance manager- and HR-facing tools (reports, dashboards, guidance/Journeys, process support assets) to reduce manual effort and improve decision-making.
  • Translate complex system behavior, security/privacy constraints, and process implications into clear options for business stakeholders and leadership.
  • Drive cross-functional collaboration with HR process owners, IT/security, and vendors to resolve issues and enable scalable solutions.
  • Strong focus on adoption: ensure changes are usable, understandable, and actionable for employees, managers, and HR teams.
Verified expert

Monika E.

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Tax Specialist

Oberengstringen
Monika E.

Last position:

Tax Specialist at Julius Bär / Bosshard & Partner

  • Operational responsibility in tax relief at source
  • Took over and stabilized a complex department during a project phase
  • Analysis, review, and optimization of existing processes and workflows
  • Updating and further development of the specialist manual
  • Analysis and resolution of individual cases in an international tax environment
Verified expert

Gwang Jin K.

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Data Scientist / Applied AI, Automation & Data Systems Researcher

Zürich
Gwang Jin K.

Last position:

Data Scientist / Applied AI, Automation & Data Systems Researcher at Independent

  • Built and explored applied GenAI, RAG, GraphRAG, local LLM, agentic AI and document-intelligence prototypes for structured analysis, evidence extraction, semantic search, technical reasoning and decision-useful reporting
  • Developed private local-LLM workflows and AI system patterns focused on privacy, reproducibility, reviewability, low-cost inference and practical user control
  • Built reproducible Python/R workflows for data analysis, automation, API-driven tooling, validation logic, technical documentation and AI-assisted software development
  • Designed workflows around explicit assumptions, traceable inputs, reviewable outputs and failure-mode awareness rather than black-box “looks good” demonstrations
  • Supported RAHN AG in a chemical/regulatory environment with data extraction and processing around WERCS, a regulatory application for chemical product and compliance data
  • Explored complex application/database schemas and wrote nested SQL queries to extract information for mixture calculations, component relationships, regulatory rules and reporting logic
  • Continued hands-on development in Git/GitHub/GitLab/Bitbucket, Docker/Linux deployment patterns, REST/API workflows, error handling, technical writing and fast AI-assisted prototyping
  • Built technical writing and documentation workflows that turn complex systems into clear runbooks, checklists, decision notes and user-facing explanations
Verified expert

Peter W.

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IT Consultant

Wallisellen
Peter W.

Last position:

IT Consultant at WYP-Consulting

Verified expert

Max M.

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Qualtrics CXM Solutions Expert

Zürich
Max M.

Last position:

Qualtrics CXM Solutions Expert at Freelancing

  • Support with the introduction and implementation of the Qualtrics XM platform in the consulting and service environment for customers, e.g. in the banking sector, focusing on data quality, parameterization, technical coordination, and implementation support

  • Technical validation of configurations, feedback flows, and reporting setups

  • Review and assurance of data quality (mapping, mandatory fields, regulatory-relevant fields)

  • Performance of UAT, functional tests, and data checks in collaboration with the department and IT

  • Coordination with stakeholders from consulting, service, compliance, IT, and product management

  • Clarification of technical requirements with the business side and derivation of adaptation requirements in the platform

  • Creation of documentation, test protocols, and quality-related artifacts

  • Support in the preparation of internal approvals and rollouts

  • Successful technical acceptance of the new feedback and reporting functionalities

  • Increase in data quality in the relevant fields (e.g., feedback classification, assignment to the consulting process)

  • Stable implementation of the platform in the consulting environment with clear handover to IT and specialist departments

Verified expert

Steven I.

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Manager | SAP S/4HANA Finance & RE-FX

Zürich
Steven I.

Last position:

Lead Consultant Finance, Controlling & Real Estate Management

Greenfield – S/4HANA (since January 2026 Post Merger)

Functional responsibility at the interface between Finance, Controlling and Real Estate Management in an S/4HANA transformation in the context of an announced merger

Key areas:

  • Introduction of Lease Accounting according to IFRS 16 as the initial focus
  • Design of integrated processes in leasing, real estate and Finance integration
  • Cost Allocation and cost accounting in Controlling
  • Expansion of the role to serve as the functional link between Finance, Controlling and RE-FX in the merger context
Verified expert

Dariusz K.

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Business System Analyst

Zürich
Dariusz K.

Last position:

Business System Analyst at Zurich Insurance

  • Participating in a strategic enterprise project to introduce a centralized customer data platform ("Single Source of Truth") to eliminate redundant data storage and accelerate digital services

  • Analyzing and documenting business and system requirements for migrating large, heterogeneous data sets (ETL) and for continuous data synchronization between core systems and the new platform

  • Close collaboration with business units, data engineers and architects to gather and validate requirements, and to ensure data quality, consistency and regulatory compliance

  • Defining the migration strategy, specifying ETL processes and synchronization mechanisms, and documenting technical interfaces

  • Developing and executing test cases for migration and synchronization processes, and performing defect analysis to ensure data integrity and system stability

  • Technologies: SQL, Microsoft SQL Server, Azure DevOps, Confluence, UML, RESTful Services, Swagger, Postman

Verified expert

Viktors D.

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IT Consultant

Baar
Viktors D.

Last position:

IT Consultant at Dundurs Consulting GmbH

  • Supporting the implementation of a digitalization project in the area of nutrient balancing
  • Analyzing complex business processes and interfaces to surrounding systems (data flows, dependencies)
  • Designing processes for data retrieval, storage, and sharing, including plausibility checks and validation logic
  • Creating and prioritizing user stories and guiding developers in agile sprints (clarifying acceptance criteria, conducting technical reviews)
  • Supporting the Product Owner in defining functional and technical requirements
  • Participating in the rollout process and delivering training for stakeholders
  • Documenting processes, requirements, and interfaces (including records/changes for releases)

Discover over 15,000 top freelancers

Statistics of experts using Data Quality

Aggregated from the professional profiles of matched freelancers.

Experience

20 years

Data Quality experts in Zurich have 20 years of professional experience on average.

Position duration

2.4 years

Data Quality experts in Zurich stay in a single position for 2.4 years on average.

Positions per freelancer

8

Data Quality experts in Zurich have completed 8 positions on average over the course of their careers.

Top business areas

Information Technology, Product Development, Project Management

Data Quality experts in Zurich have gathered most of their hands-on project experience in Information Technology, Product Development, and Project Management.

Top industries

Information Technology, Banking and Finance, Professional Services

Data Quality experts in Zurich are most in demand in Information Technology, Banking and Finance, and Professional Services.

Certification focus areas

Information Technology, Project Management, Product Development

Data Quality experts in Zurich earn their certifications most often in Information Technology, Project Management, and Product Development.

Bachelor's degree or higher

89%

89% of Data Quality experts in Zurich hold at least a Bachelor's degree.

Master's degree or higher

33%

33% of Data Quality experts in Zurich hold at least a Master's degree.

Doctorate

11%

11% of Data Quality experts in Zurich have a doctorate (PhD).

Certifications per freelancer

2

Data Quality experts in Zurich hold 2 professional certifications on average.

Most common languages

German, English, Spanish

Data Quality experts in Zurich most often speak German, English, and Spanish.

Speak two or more languages

92%

92% of Data Quality experts in Zurich speak two or more languages.

Based on our profile pool as of 9 Oct 2026.

Daily rate distribution

0% 25% 50% 75% 100%
10% of Data Quality experts in Zurich charge less than €480 per day.
40% of Data Quality experts in Zurich charge between €800 and €960 per day.
50% of Data Quality experts in Zurich charge €960 or more per day.
<€480 €800-​960 €960+

The chart shows how the daily rates of experts in this technology in Zurich 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 Zurich using Data Quality

Rates are based on recent contracts and do not include FRATCH margin.

1000
750
500
250
Rate comparison chart
Daily rate avg. 885 €

The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.

1000
750
500
250
Rate comparison chart
Median rate 880 €

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 9 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.

Data Quality 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 (83%)
  • Banking and Finance (75%)
  • Professional Services (58%)
  • Education (33%)
  • Insurance (33%)
  • Manufacturing (33%)
  • Government and Administration (33%)
  • Healthcare (25%)

Please note that freelancers can work across multiple industries, so percentages overlap.

About the technology

What Data Quality covers

Data Quality is the discipline of making data fit for its intended use. It examines accuracy, completeness, consistency, validity, uniqueness and timeliness across databases, files, APIs and reporting systems. Specialists turn unclear data problems into measurable rules, ownership models and practical remediation work.

Where it is used

Companies rely on Data Quality work when information moves between departments, applications or external partners. Typical outcomes include:

  • Clean customer, supplier and product records
  • Validate data at ingestion and integration points
  • Detect duplicates, missing values and invalid formats
  • Improve reporting, analytics and machine learning inputs

Tools and connected skills

The work often combines SQL, Python, profiling tools and automated test frameworks. Depending on the landscape, specialists use Informatica, Talend, Ataccama, Great Expectations, dbt tests or cloud data services. They also understand data warehouses, ETL and ELT pipelines, APIs, metadata, lineage and master data management.

When companies need support

Freelance expertise is useful during migrations, acquisitions, CRM or ERP changes, data warehouse programmes and regulatory reporting initiatives. It also helps when teams cannot explain conflicting dashboards or when recurring manual corrections slow operations. In Zurich, remote collaboration can work well when documentation, access controls and communication with local stakeholders are clearly defined.

What strong specialists deliver

A capable professional begins with profiling and a shared definition of quality. They trace defects to their source rather than only correcting visible records, then design rules that teams can monitor over time. Strong deliverables may include a quality assessment, rule catalogue, exception workflow, remediation plan, dashboards and operating guidance.

How quality improvements last

Reliable Data Quality is not a one-off cleansing exercise. It needs accountable data owners, agreed thresholds, repeatable checks and feedback from the teams that create and use the information. The best specialists balance technical detail with business context, explain trade-offs clearly and leave behind controls that internal teams can maintain.

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Frequently asked questions

What clients ask us most about Data Quality — answered in short.

Data Quality is used to determine whether information is accurate, complete, consistent, valid, unique and timely enough for a business purpose. Companies apply it to customer records, financial data, product catalogues, operational systems, analytics and machine learning workflows.

Data Quality is broader than data cleansing. Cleansing corrects, standardises or removes problematic records, while Data Quality also covers profiling, validation rules, monitoring, ownership, root-cause analysis and ongoing controls.

A strong Data Quality specialist often works with SQL, Python, data modelling, ETL or ELT pipelines and data warehouses. Knowledge of master data management, metadata, lineage, APIs, cloud services and business process analysis is also valuable.

The right level depends on the scope and risk of the work. Data Quality assessments may need a specialist who can profile data and define rules, while enterprise migrations or complex governance programmes call for someone who can coordinate systems, owners and remediation across the organisation.

Yes, Data Quality work is often suitable for remote collaboration because profiling, rule design and documentation can be performed securely online. On-site sessions in Zurich may still help with stakeholder workshops, access planning and agreement on definitions across business teams.

Ask for a clear method covering profiling, rule definition, defect prioritisation, root-cause analysis and monitoring. A credible Data Quality specialist can explain how they measure improvement, involve data owners and prevent the same defects from returning.

Data Quality projects may use SQL and Python alongside Informatica, Talend, Ataccama, Great Expectations or dbt tests. Tool choice should follow the data landscape, delivery model, security needs and the team’s ability to operate the resulting checks.

A Data Quality freelancer should clarify the business purpose, critical data elements, source systems, access rights, data owners and accepted quality thresholds. They should also agree how findings will be prioritised, who approves corrections and how controls will be maintained after delivery.

The average hourly rate of freelancers in Zurich, Switzerland who have used Data Quality in their recent projects is 111 €, which corresponds to a daily rate of about 885 € based on an 8-hour working day.

Of the freelancers in Zurich, Switzerland who have used Data Quality in their recent projects, 89% hold at least a Bachelor's degree, 33% hold at least a Master's degree, and 11% hold a doctorate.

On average, freelancers in Zurich, Switzerland who have used Data Quality in their recent projects have 20 years of professional experience, with a single engagement typically lasting around 2.4 years.

The most common languages among freelancers in Zurich, Switzerland who have used Data Quality in their recent projects are German (92%), English (92%), and Spanish (42%).

The most common industries among freelancers in Zurich, Switzerland who have used Data Quality in their recent projects are Information Technology (83%), Banking and Finance (75%), and Professional Services (58%).

The most common business areas among freelancers in Zurich, Switzerland who have used Data Quality in their recent projects are Information Technology (92%), Product Development (67%), and Project Management (67%).

Main locations of FRATCH Experts, who have recently used Data Quality

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.

Countries:

Zurich Geneva Basel Bern

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