ETL Experts in Zurich
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Meet FRATCH Experts in Zurich, who have recently used ETL
Marco Skulschus
Last position:
Business Analyst, Data Warehouse Developer at NRW.Bank
Business analysis for risk controlling.
Development of a data warehouse based on MS SQL Server with data from the FIS Cross-Asset Trading and Risk Platform (formerly Front Arena).
Implementation of ETL and transformation logic with T-SQL and Python (template engine Jinja2).
Modeling and automation of data structures with Data Vault.
Building reporting and analysis reports with Microsoft Power BI, including training and onboarding of users.
Banashankari Naragundkar
Last position:
Senior IT Project Manager, Data and Integration Platform at MCH Group, Group IT
Led implementation of an Azure cloud-based, event-driven enterprise integration platform connecting Salesforce, Momentus(event) and ERP applications. Reduced overall costs by 60%, lowered operational errors to under 1%, and delivered on time.
- Led the full project lifecycle from initiation to delivery using agile and hybrid methods - platform vision, feasibility, technical blueprint, architecture, implementation, integration, testing, rollout and business adoption.
- Built the engineering team from the ground up, leading teams across Switzerland, Bulgaria and India using Scrum and Kanban; established Jira, Confluence, Asana and SharePoint for delivery and reporting.
- Established and managed frequent steering meetings, reporting that gave stakeholders transparency and drove key decision-making.
Dariusz Kaczmarkiewicz
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
Matthias Isler
Last position:
Fractional CTO (Principal Engineer / Technical Architect)
- Designed large-scale systems and APIs serving thousands of concurrent users.
- Refactored a 650k-LOC monolith and led full AWS migration for stable performance.
- Introduced SLO-based observability, improving reliability and recovery flow.
- Optimised cloud and databases, achieving significant cost and latency reduction.
- Delivered LLM, RAG, and document-automation pipelines adopted in production.
Csaba Kéri
Last position:
ServiceNow Consultant at DXC
- Worked in mixed teams with several clients
- Performed requirement engineering, proposal and time estimation
- Developed ACLs, business rules, flows, workflows, catalog items, various scripts, UI actions, policies, scoped applications
- Customized mobile apps: Now Agent and Now Mobile
- Implemented integrations using the Integration Hub
- Coordinated continuously with clients during development
- Performed testing and helped clients with testing
- Deployed to production and applied main version upgrades and patches
- Managed CMDB, domain separation and asset management
- Integrated between instances at different clients
- Developed GlideScript: business rules, scripted REST endpoints, extension points, fix scripts, background scripts
Bojan Antonović
Last position:
Full Stack Developer with Angular at Further Education
- Highest level achieved: Certified Mid-Level Angular Developer
- 13 technologies newly learned or refreshed with (re-)certifications
- Current: Docker, Azure, Quarkus
Daniel Lisak
Last position:
SQL, .NET and VBA Developer at Postfinance AG
- For the internal MIS, which gathers data in a complex, comprehensive system landscape and loads it into a central database via ETL, existing processes and packages had to be maintained and new KPIs analyzed, specified, and implemented.
Deschances Tchakounang Ndjomou
Last position:
Senior Data Architect at Odd Parrot
- Supporting UBS Wealth Management as Senior Data Architect within a multi-year enterprise data mesh transformation.
- Guiding a strategic stream to design and implement a data product aligned with UBS’s enterprise-wide data mesh framework.
- Leading architecture definition, governance alignment, and cross-domain integration to ensure scalable, compliant, and reusable data products across global stakeholders.
- UBS – Global Wealth Management Data Product Architecture: Designed an enterprise-aligned data product spanning 26 countries, defining data contracts, metadata standards, and federated architecture patterns enabling cross-domain reuse across the bank.
- Defined cross-jurisdictional data policies and access controls to ensure compliance with regulatory requirements across multiple regions (EU, APAC, LATAM, CH).
Viktors Dundurs
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)
Oscar Montero
Last position:
IT Specialist / DBA at Rothschild Private Swiss Bank
- Act as DBA SME for MS SQL Server and primary contact for MSSQL infrastructure and long-term technology roadmap in a critical 24/7 banking environment
- Maintain and evolve SQL infrastructure and monitoring system across development, test, UAT, and production environments (10 servers, 4 always-active Windows clusters, MSSQL 2014–2022 on VMs hosted by Inventix)
- Automate SQL operations using Brent Ozar scripts, PowerShell, and Inventix cloud script integration
- Build and improve ETL processes and BI applications (Power BI); plan resources and mentor BI team
- Participate in review, delivery, and deployment of database improvements across the software development lifecycle
- Migrate SQL Server instances from 2017 to 2019 and 2022
- Integrate new applications requiring MSSQL databases
- Manage and support on-premise and Azure SQL Server solutions; advise on industry standards, best practices, and creative database solutions
- Develop automation scripts for internal systems using PowerShell and Git
- Monitor systems with Splunk and Grafana; manage alerts, filters, data ingestion, and dashboard configuration
- Collaborate with operations, development, and business teams to identify and resolve operational and performance issues proactively
- Implement new SQL Server technologies such as Query Store, Extended Events, Tuning Advisor, and system traces
- Provide on-call support and regular maintenance during evenings and weekends
- Define and enforce system policies and standards; work closely with application managers, HR, and IT platforms in Switzerland and the UK
- Handle 2nd/3rd level support service requests; document resolutions and cooperate with vendors
- Use internal and external monitoring tools to detect performance trends and implement alerts and processes to prevent database issues
- Document and share knowledge to improve technical understanding across operations and development teams; administer Confluence (installation, configuration, document management, performance, upgrades)
- Work professionally in cross-functional teams to advise, influence, and coach development and operations teams on database topics
Karl Estermann
Last position:
incl. CI/CD, automation at AALS Software AG
- Designed and delivered a practical real-time course on Flink and Hadoop with MapReduce, HDFS, Spark, Flink, Hive, HBase, MongoDB, Cassandra, and Kafka
- Gained extensive DevOps and CI/CD experience
- Created ETL/ELT pipelines with Apache tools and Pentaho
- Led projects in municipal software, financial services, and big data with Kafka
- Developed AI/NLP models and chatbots with RASA, Chatter, and Dialogflow
- Built and managed a TypeDB knowledge database
- Worked with OpenStack, Kubernetes, and Podman
Nenad Tomasic
Last position:
Contractor at Swisscom
- SAP Data Designer ETL, SQL Server, Docker for PharmaSuisse Data Warehouse Application (Application Manager and Developer)
- SAP Business Objects, ABAP on SAP HANA for the Police of the Canton of Bern (Application Manager and Developer)
- Avaloq Connectors to SAP BW for Banque Cantonale de Fribourg
Discover over 15,000 top freelancers
Statistics of experts using ETL
Aggregated from the professional profiles of matched freelancers.
Experience
24 years
Position duration
2.9 years
Positions per freelancer
12
Top business areas
Information Technology, Business Intelligence, Product Development
Top industries
Banking and Finance, Information Technology, Insurance
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
90%
Master's degree or higher
70%
Certifications per freelancer
6
Most common languages
English, German, French
Speak two or more languages
100%
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 Zurich 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 Zurich using ETL
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
ETL work
ETL stands for extract, transform, load. It moves data from source systems into a target store where teams can query, report, and automate decisions. Strong ETL work keeps business data consistent, traceable, and ready for analysis.
What it delivers
- Batch pipelines from apps, files, APIs, and databases
- Data cleaning, mapping, and validation rules
- Loads into warehouses, lakes, and reporting layers
- Incremental refresh and failure handling
- Documentation for lineage and ownership
Common tools
ETL specialists often work with Informatica, Talend, SSIS, dbt, Apache Airflow, and cloud data services. The exact stack depends on whether the work is on-premise, cloud-based, or mixed. Good experts know how to fit tools to the data model, not the other way around.
When companies bring help
Companies usually need freelance ETL expertise when pipelines break, source systems change, or a warehouse project needs a faster start. In Zurich, this often comes up in finance, insurance, pharma, and other data-heavy teams that need clean reporting across strict internal standards.
What strong experts do
- Read source schemas and spot bad input early
- Design transformations that are clear and maintainable
- Keep loads repeatable and easy to monitor
- Document assumptions, exceptions, and data quality checks
- Work well with analysts, data teams, and source owners
Choosing the right fit
A strong ETL professional understands both data and process. They can explain why a load is slow, where records are lost, and how to test changes before release. For Zurich teams, clear English is usually enough, but local coordination can matter when work touches business stakeholders or on-site systems.
Frequently asked questions
Before you brief your next project: the most common questions about ETL.
ETL is used to move data from source systems into a place where it can be trusted for reporting, analytics, and operations. It extracts data, transforms it into a usable shape, and loads it into a warehouse, lake, or downstream application. Companies bring in experts when they need dependable pipelines rather than one-off scripts.
ETL transforms data before it reaches the target store, while ELT loads first and transforms later inside the warehouse or analytics engine. ETL is often preferred when source data needs strong cleansing, masking, or business rules before landing. ELT can work well in modern cloud setups, but it is not always the better fit.
A strong ETL specialist may use Informatica, Talend, SSIS, dbt, Apache Airflow, or cloud-native services from AWS, Azure, or Google Cloud. The right tool depends on the source systems, target stack, and how much orchestration or monitoring the flow needs. Tool choice matters less than clean design and reliable operation.
A good ETL professional usually understands SQL, data modeling, source-to-target mapping, and basic scripting. Knowledge of warehouses, APIs, file formats, scheduling, and data quality checks also helps. If the work touches governance, lineage and access control are important too.
A simple ETL task may only need someone who can fix mappings or improve an existing load. A larger migration or multi-source warehouse build needs someone who can design for volume, retries, and change over time. The more systems and stakeholders involved, the more structure the project needs.
Yes, most ETL work can be done remotely if the data access, security, and review process are in place. Zurich companies sometimes ask for on-site time when source systems are internal, business users need close alignment, or workshop sessions are part of the project. Clear communication matters more than location for most delivery tasks.
Look for someone who can explain the data flow clearly and show how they test each step. A strong ETL freelancer writes maintainable transformations, handles errors cleanly, and knows how to prove data quality after a load. Ask for examples of source-to-target mapping, monitoring, and recovery work, not just tool names.
Before bringing in ETL expertise, prepare source system details, target requirements, sample data, and any business rules that already exist. It also helps to share access constraints, scheduling windows, and the expected reporting outcome. Good preparation shortens discovery and helps the specialist focus on the real data issues.
The average hourly rate of freelancers in Zurich, Switzerland who have used ETL in their recent projects is 115 €, which corresponds to a daily rate of about 918 € based on an 8-hour working day.
Of the freelancers in Zurich, Switzerland who have used ETL in their recent projects, 90% hold at least a Bachelor's degree and 70% hold at least a Master's degree.
On average, freelancers in Zurich, Switzerland who have used ETL in their recent projects have 24 years of professional experience, with a single engagement typically lasting around 2.9 years.
The most common languages among freelancers in Zurich, Switzerland who have used ETL in their recent projects are English (100%), German (92%), and French (58%).
The most common industries among freelancers in Zurich, Switzerland who have used ETL in their recent projects are Banking and Finance (92%), Information Technology (92%), and Insurance (58%).
The most common business areas among freelancers in Zurich, Switzerland who have used ETL in their recent projects are Information Technology (100%), Business Intelligence (83%), and Product Development (83%).
Main locations of FRATCH Experts, who have recently used ETL
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 Request a free demo
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Philipp Thomaschewski
FRATCH CEO
