Data Science Experts in Hamburg
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Meet FRATCH Experts in Hamburg, who have recently used Data Science
Daniel Sedlack
Last position:
Senior Software Engineer at energielenker solutions GmbH
- Designed and implemented a Python-based ETL pipeline with the Dagster framework to transform raw energy data from heterogeneous sources using InfluxDB and visualizations in Grafana
- Defined time-based and dependency-based jobs
- Deployed to managed Kubernetes clusters using Helm
- Integrated InfluxDB Cloud
- Prepared data for use in Grafana, including cleaning, normalization, and time-based resampling in Python
- Developed dashboards and visualizations in Grafana
- Developed unit tests with mocking using pytest
- Set up a CI/CD pipeline in GitLab
Technologies: Python, Dagster, InfluxDB, Grafana, pandas, pytest, REST, CI/CD, GitLab, Container, Kubernetes, Helm, Docker, Cloud
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
Cornelius Höfig
Last position:
Solution Architect at STIHL
- Remodeling of the system architecture for an Azure-based platform aimed at rapid development of new functionalities
- Modeling of a staging concept for the fulfillment of diverse customer and QA needs
- Creation of requirements for, and oversight of, a proof-of-concept supplier project for a Flutter app with highly advanced BLE functionalities
- Comparison of multiple observability platforms for feasibility and requirements fit within the project environment
- Creation of a mobile app architecture based on domain-driven architecture
- Position of technical advisor and accountable solution architect for two development teams
- Execution of architecture reviews and alignment of changes with architectural expectations
- Skills & Technologies: Microsoft Azure , App Services, NodeJS Mono-repository, microservice architecture, domain driven design, self contained systems, requirements engineering, CI/CD, DevOps, API design, solution architecture
Jenny Lam
Last position:
Product Manager – Data & Sustainability at shipzero GmbH
Designed and implemented an initial product management framework
Created a process for prioritizing the product roadmap with internal stakeholders, considering business impact, resources, and technical feasibility
Led the migration to a product discovery tool to improve transparency and cross-team collaboration
Served as a liaison between tech and business teams
Managed data-driven sustainability projects for the largest key account, including implementing regulatory reporting (ISO 14083) on greenhouse gas emissions
Delivered complete data integration across 20+ source systems, coordinating onboarding and translating business requirements into technical specs for the development team
Enhanced the client's emission tracking and reporting accuracy through data quality analyses and identifying optimization opportunities
Thomas Wittlinger
Last position:
Chief Product Officer at OWNLY FinTech GmbH
Freelance work for a large German family office
Built and further developed a modular B2B SaaS platform for professional wealth management and family offices, alongside freelance delivery of production-ready AI, data management, and automation solutions for the wealth management sector.
- Developed an AI governance framework for regulated finance and asset management workflows, aligned with DORA, BaFin-related governance expectations, and data protection requirements, including role definitions, access levels, and decision rules.
- Designed an agentic system with a locally operated open-source language model, including Qwen2.5 via Ollama, for secure querying of an asset database through text-to-SQL-to-text workflows.
- Built AI-supported analysis and reporting capabilities that generate structured answers, tables, and charts from asset data, with domain validation through resolver logic and RAG elements.
- Developed production-grade data import workflows for financial service provider data from CSV, PDF, and API sources, including validation, plausibility checks, and reconciliation with existing asset data.
- Solved the asset matching problem without a cross-system primary key through multi-stage validation rules and human-in-the-loop approvals.
Results:
- Secured EUR 250,000 in SaaS revenue in 2024, exceeding the forecast by 20%.
- Acquired family office clients with EUR 1.6bn in assets under management.
- Reduced manual effort for the largest client by approx. 3 days per month through automated data import and reconciliation processes.
- Reduced operational error risk through structured data validation, multi-stage asset matching, and human-in-the-loop approvals.
Johannes Borghardt
Last position:
Vice President Operations at DATALOGUE GmbH
- Overall responsibility for project management, analytics, AI & Data Science, database management, and web development (24 FTE).
- Implemented and established AI-driven analytics and AI work tools, increasing efficiency per FTE by over 20%.
- Developed and launched a planning and forecasting platform, increasing error tolerance by over 60%.
- Introduced an ERP software, reducing required FTE by 50%.
Adriana Van Boxtel
Last position:
Board Member – Data Governance & Digital Strategy at IWCA Germany e.V.
- Co-founded the German chapter of the International Women's Coffee Alliance, contributing to strategic vision development and organizational structuring for international development initiatives
- Optimized internal workflows and reduced administrative overhead through systematic process analysis and documentation
- Designed and implemented governance frameworks and data governance standards to support ESG compliance and transparency requirements for NGO operations
- Developed comprehensive data strategy to enhance data quality, transparency, and reporting capabilities across international stakeholder network
Alain Blankenburg-Schröder
Last position:
Interim Manager | Product Manager | AdTech & CDP Expert | Technical Transformations at Freelancer
- Hands-on product and portfolio analyses with actionable recommendations
- Skilled in consulting, concept development, and agile project management
- Technical leadership & team empowerment – for smooth agile delivery with foresight and guardrails
Padma Priya Srinivasan
Last position:
Certified Data Scientist at XDi
- Successfully completed a 3.5 month data science course, earning the ‘Certified Data Scientist’ title from XDi, Germany (AZAV certified).
- Covered supervised and unsupervised machine learning algorithms.
- Covered natural language processing using Python.
Simone Amoroso
Last position:
Head of Technology & CISO at AI Quality and Testing Hub
- Lead developer of Prof. Valmed, the first LLM-powered medical device (utilising RAG on a medical corpus of 2.5M+ documents) to receive a CE certification.
- Designed and implemented cloud-native MLOps infrastructure for ENBW’s energy trading analytics division, enabling scalable deployment and monitoring of predictive models.
- Architected end-to-end testing and validation frameworks for AI/ML systems, ensuring quality, compliance, and robustness in critical and regulated applications.
- Conducted professional training on AI testing, EU regulatory frameworks, and quality assurance for production AI systems.
Thomas Suwelack
Last position:
Founder & CEO at 21done Startup
- Founded, built, and led a company
- Led up to 6 FTEs to achieve company and investor goals
- Strategic management: mission, USP, goals, strategy & roadmap
- CX management: customer-focused products, offerings, and touchpoints
- Marketing & sales: B2C marketing, B2B sales, market research
Aravind Sasi Nair Purayath
Last position:
AI – Data Specialist at Emirates Islamic Bank
- Architected and deployed LLM based AI agents, RAG pipelines, and vector search solutions for decision support across retail banking department.
- Developed and shipped robust AI pipelines with guardrails, error handling, monitoring, and fallback logic ensuring high reliability outcomes and compliance with data privacy.
- Developed and deployed ML models to identify transactional anomalies, improving fraud detection and risk assessment in high-volume datasets for credit risk modelling.
- Built, evaluated and fine-tuned ML models to generate propensity scores for customers used to drive personalized targeting campaigns for credit cards and personal finance/loan products.
- Developed an NLP pipeline using BERT embeddings and spaCy NER for SMS/email analysis and customer query logs.
- Trained machine learning models using Isolation Forest to classify user behaviour and detect anomalies.
- Extracted, cleaned, enriched and feature engineered datasets from different sources to build feature stores that powered ML model training.
- Led development of dashboards using Power BI, Grafana, and Prometheus to monitor model performances, KPI trends, and marketing metrics.
- Built multi-touch attribution models using logistic regression and time-decay weights to evaluate lead quality.
- Developed scalable ETL pipelines from CRM, T24, SAP, and ERP, supporting millions of monthly transactions.
- Integrated testing and CI/CD workflows for robust data pipeline deployment.
Victor Shanaa
Last position:
Junior Researcher at Hamburg University of Technology (TUHH)
- Conducted research on fluidized bed reactors, applying machine learning methods for process monitoring and predictive maintenance.
- Developed reproducible workflows for high-temperature process experiments, improving data reliability and lab efficiency.
- Collaborated with cross-disciplinary teams to integrate AI models into traditional engineering research.
Stefan Seidel
Last position:
Consultant IT Application Development & Data Science at Eurofins Finance Transactions Germany GmbH
- Consultant for IT application development and data science
Artem Dontsov
Last position:
Senior Digital Consultant (Workday) at nativDigital
Discover over 15,000 top freelancers
Statistics of experts using Data Science
Aggregated from the professional profiles of matched freelancers.
Experience
17 years (Germany: 15 years)
Position duration
2.7 years (Germany: 2.2 years)
Positions per freelancer
7 (Germany: 9)
Top business areas
Information Technology, Product Development, Business Intelligence
Top industries
Information Technology, Professional Services, Banking and Finance
Certification focus areas
Information Technology, Business Intelligence, Project Management
Bachelor's degree or higher
93% (Germany: 96%)
Master's degree or higher
64% (Germany: 78%)
Doctorate
14% (Germany: 22%)
Certifications per freelancer
1 (Germany: 3)
Most common languages
German, English, French
Speak two or more languages
81% (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 Data Science
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 it covers
Data science turns raw data into answers teams can use. It combines statistics, programming, and domain knowledge to find patterns, predict outcomes, and support decisions. Companies bring in specialists when they need reliable analysis instead of guesswork.
Typical work
- Data cleaning and preparation
- Exploratory analysis and reporting
- Forecasting and predictive models
- Experiment design and evaluation
- Dashboards and data storytelling
Tools and stack
Strong professionals work across Python, R, SQL, notebooks, and common libraries for modeling and visualization. They also know how to move between notebooks, production code, and business reports without losing traceability. In Hamburg, this often supports logistics, trade, media, and commerce teams that need practical analysis.
When to hire
Bring in freelance expertise when data is messy, a model is already in production, or internal teams need support for a specific initiative. It also helps when a company must validate a use case before investing in a larger data team. Temporary specialists can fill short gaps without slowing delivery.
What strong specialists do
Good data science professionals ask the right questions before writing code. They define the problem clearly, choose methods that fit the data, document assumptions, and explain results in plain language. They also know when a simple model is better than a complex one.
Quality signals
Look for work that is reproducible, measurable, and tied to a real business goal. Strong output usually includes clear data prep steps, sound validation, and a result that can be understood by non-technical stakeholders. For remote work, clear documentation and regular review points matter as much as technical skill.
Frequently asked questions
Questions about Data Science? Start with the answers below.
Data Science is used to turn business data into forecasts, segmentations, recommendations, and decision support. Companies use it for demand planning, customer analysis, risk checks, churn reduction, and process improvement. The best work connects the analysis to a concrete business question.
Data Science goes deeper than standard reporting. Business intelligence and data analytics usually focus on dashboards, trends, and past performance, while data science also builds predictive and statistical models. In practice, the three often work together.
A strong Data Science specialist usually combines Python or R, SQL, statistics, and clear communication. Depending on the project, knowledge of machine learning, data engineering basics, and visualization tools also matters. The key is not only technical skill but also the ability to explain trade-offs.
A Data Science freelancer is useful when the work is scoped, urgent, or highly specific. Common cases include a model review, a one-off analysis, a proof of concept, or support for an overloaded team. Freelancers also help when a company needs specialist input before hiring internally.
You do not need a finished brief, but you do need a clear business goal and access to the right data. A Data Science specialist can help shape the scope, define success criteria, and identify risks early. The better the problem statement, the faster the work moves.
Much Data Science work can be done remotely if data access, security, and communication are set up well. On-site time can help at the start, especially for discovery sessions with stakeholders in Hamburg or when sensitive data needs tighter coordination. Many teams use a hybrid setup.
Look for evidence of sound methods, clean documentation, and results tied to business outcomes. A good Data Science professional can explain why a method was chosen, how it was checked, and where it may fail. Sample notebooks, past project write-ups, and clear communication are strong signs.
Data Science is the broader discipline. It includes data preparation, analysis, visualization, experimentation, and sometimes machine learning. Machine learning is one tool within data science, used when prediction or classification is the goal.
The average hourly rate of freelancers in Hamburg, Germany who have used Data Science in their recent projects is 120 €, which corresponds to a daily rate of about 962 € based on an 8-hour working day.
Of the freelancers in Hamburg, Germany who have used Data Science in their recent projects, 93% hold at least a Bachelor's degree, 64% hold at least a Master's degree, and 14% hold a doctorate.
On average, freelancers in Hamburg, Germany who have used Data Science in their recent projects have 17 years of professional experience, with a single engagement typically lasting around 2.7 years.
The most common languages among freelancers in Hamburg, Germany who have used Data Science in their recent projects are German (94%), English (81%), and French (31%).
The most common industries among freelancers in Hamburg, Germany who have used Data Science in their recent projects are Information Technology (75%), Professional Services (75%), and Banking and Finance (44%).
The most common business areas among freelancers in Hamburg, Germany who have used Data Science in their recent projects are Information Technology (88%), Product Development (81%), and Business Intelligence (75%).
Main locations of FRATCH Experts, who have recently used Data Science
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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