Hire the Best Data Scientists
in Germany

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Rating is 4.8 out of 5.
4.8/5
Based on 138 client reviews
Kunjan V.

Karlsruhe, Germany

$126/hr
5.0
68 jobs

๐Ÿš€Hi! I help startups go from demo โ†’ market-ready AI product - fast! I plug into your team and ship production ready features that customers love. ๐Ÿ† Top 1% (Expert-vetted) | 8+ years| 100% JSS | 35+ Delighted Clients | 18+ E2E Deployments ๐ŸŽฏ "๐˜’๐˜ถ๐˜ฏ๐˜ซ๐˜ข๐˜ฏ ๐˜ช๐˜ด ๐˜ข๐˜ฏ ๐˜ข๐˜ฃ๐˜ด๐˜ฐ๐˜ญ๐˜ถ๐˜ต๐˜ฆ ๐˜จ๐˜ฆ๐˜ฎ! ๐˜š๐˜ฉ๐˜ฆ ๐˜ธ๐˜ฆ๐˜ฏ๐˜ต ๐˜ข๐˜ฃ๐˜ฐ๐˜ท๐˜ฆ ๐˜ข๐˜ฏ๐˜ฅ ๐˜ฃ๐˜ฆ๐˜บ๐˜ฐ๐˜ฏ๐˜ฅ. ๐˜›๐˜ฆ๐˜ข๐˜ฎ๐˜ช๐˜ฏ๐˜จ ๐˜ถ๐˜ฑ ๐˜ธ๐˜ช๐˜ต๐˜ฉ ๐˜ฉ๐˜ฆ๐˜ณ, ๐˜ธ๐˜ฆ ๐˜ฃ๐˜ถ๐˜ช๐˜ญ๐˜ต ๐˜ณ๐˜ฐ๐˜ฃ๐˜ถ๐˜ด๐˜ต ๐˜ฅ๐˜ข๐˜ต๐˜ข ๐˜ฑ๐˜ช๐˜ฑ๐˜ฆ๐˜ญ๐˜ช๐˜ฏ๐˜ฆ๐˜ด, ๐˜ฐ๐˜ฑ๐˜ต๐˜ช๐˜ฎ๐˜ช๐˜ป๐˜ฆ๐˜ฅ ๐˜“๐˜“๐˜”๐˜–๐˜ฑ๐˜ด, ๐˜ต๐˜ณ๐˜ข๐˜ฏ๐˜ด๐˜ช๐˜ต๐˜ช๐˜ฐ๐˜ฏ๐˜ฆ๐˜ฅ ๐˜ง๐˜ณ๐˜ฐ๐˜ฎ ๐˜ง๐˜ข๐˜ฏ๐˜ค๐˜บ ๐˜ฅ๐˜ฆ๐˜ฎ๐˜ฐ๐˜ด ๐˜ต๐˜ฐ ๐˜ข ๐˜ด๐˜ค๐˜ข๐˜ญ๐˜ข๐˜ฃ๐˜ญ๐˜ฆ ๐˜ˆ๐˜ ๐˜ฑ๐˜ณ๐˜ฐ๐˜ฅ๐˜ถ๐˜ค๐˜ต ๐˜ต๐˜ฉ๐˜ข๐˜ต 1000๐˜ด ๐˜ฐ๐˜ง ๐˜ค๐˜ถ๐˜ด๐˜ต๐˜ฐ๐˜ฎ๐˜ฆ๐˜ณ๐˜ด ๐˜ญ๐˜ฐ๐˜ท๐˜ฆ!" - CTO, Healthcare startup, SF (1 of many 5-star reviews) Over 7+ years on Upwork, I've helped startups and enterprises across sectors - Marketing, Healthcare, Law, Education, and Agribusiness - translate AI into measurable business ROI by building the right data and ML foundations. Whether collaborating with 1000+ employee companies or lean 2-person startups, I adapt to the teamโ€™s needs: reporting directly to CEOs or CTOs as an AI/Data Lead, or integrating as a hands-on contributor alongside in-house developers. I bring a โ€œbrain-for-hireโ€ + hands-on mindset - tackling strategic and technical challenges with equal enthusiasm, always focused on delivering outcomes, not overhead. ๐Ÿ‘€ See 8+ Case Studies & Demos: totemxlabs dot com/#casestudies ๐ŸŽฏ Recent Success Stories (2024-2025) 1. Graph RAG for Marketing & Strategic decisions Implemented knowledge graph-powered RAG systems using Neo4j for marketing intelligence and SEO optimization - enabling sophisticated knowledge checks and relationship-based insights that traditional RAG cannot achieve. 2. Workplace Safety Vision System Deployed end-to-end computer vision solution for workplace health and safety compliance - real-time hazard detection, PPE verification, and automated incident reporting. 3. Healthcare Diagnostic Knowledge Graph Developed evidence-based diagnostic system using knowledge graphs for healthcare - producing auditable, traceable diagnostic reasoning paths that meet clinical documentation standards. ๐Ÿงญ My Proven AI Product Process: Discovery: Identify high-ROI AI opportunities aligned with your goals. Data Assessment: Evaluate data availability, relevance, quality. Solution Design: Define user journeys, tech stacks, evaluation frameworks. Development: Optimized sprints for cost-effective, robust AI solutions (min. tech debt). Deployment: Scalable architectures, rigorous testing for production readiness. ๐Ÿ’ก Technical Expertise: GenAI & LLMs: LLM Ops (Fine-tuning, Prompt Engineering, RAG, Agentic Workflow, Multi-agent systems, Memory Management), LangChain, LangGraph, LlamaIndex, LangServe; Vector Search (Pinecone, Weaviate, Chroma, FAISS). AI/ML & MLOps: Predictive Analytics, Recommender Systems, RLHF; Model Lifecycle, MLflow, Feature Stores; PyTorch, TensorFlow, Scikit-learn. Cloud & Infra (Multi-cloud): AWS (Lambda, ECS, ElastiCache, DynamoDB, API Gateway), Azure, GCP, Vertex AI, SageMaker; Docker, Kubernetes (EKS/GKE). Software & Data Eng: Python (expert), Fullstack; FastAPI, Flask, Django; REST, GraphQL, OpenAPI, AsyncIO; Batch/Stream (Airflow, Spark, Kafka), Pandas, Polars, dbt; ETL/ELT. DBs/Arch/DevOps: PostgreSQL, MySQL, DynamoDB, MongoDB, Vector DBs (Pinecone, Weaviate, ChromaDB), Neo4j; Microservices, GitHub Actions, Terraform, CI/CD pipelines. ๐Ÿค Why Partner With Me? I help architect and develop E2E AI solutions merging tech excellence with business acumen. Let's transform the AI wave into your competitive edge. โœ…DM me if you have an exciting problem to solve! โ€”Updated January, 2026โ€” Latest LLMs (2025-26): GPT-5.2 (OpenAI's flagship with 26% lower hallucination rate) Claude 4.5 Opus & Sonnet 4.5 (200K context, breakthrough coding performance) Gemini 3 Pro & Flash (Deep Think mode, multimodal excellence, 1M token context) DeepSeek V3.2 & R1 series (685B parameters, hybrid thinking/non-thinking modes) Qwen 3 series (open weight dense and mixture-of-experts (MoE) model for reasoning tasks) Agentic AI Frameworks: Langchain & LangGraph (stateful graph-based workflows, production-grade orchestration) OpenAI Agents SDK (lightweight with guardrails and handoffs) CrewAI (role-based multi-agent collaboration, human-in-the-loop) LlamaIndex Agents (RAG-first agent capabilities) AI workflow automation: n8n Knowledge Graphs & Graph RAG: Neo4j 2025 features: Community summaries, parallel retrievers, LLM Knowledge Graph Builder Neo4j Aura Graph Analytics Graph RAG architecture Cypher query optimization, graph embeddings for ML Agentic knowledge graph construction with provenance Computer Vision Applications: Workplace safety, Video generation Multimodal Vision Language Models (VLMs) Context engineering for high quality content generation

  • Data Science
  • Machine Learning
  • Natural Language Processing
  • Python
  • Deep Learning
  • Artificial Intelligence
  • Computer Vision
  • PyTorch
  • TensorFlow
  • Retrieval Augmented Generation
  • Large Language Model
  • Data Engineering
  • AI Agent Development
Atique A.

Berlin, Germany

$45/hr
5.0
11 jobs

๐Ÿš€ Top 1%, Expert-Vetted, AI Engineer ๐Ÿš€ Hey! Iโ€™m Atique, an AI & Machine Learning Engineer with 6+ years of experience building smart, real-world solutions. I specialize in machine learning, deep learning, NLP, LLMs and automation (n8n, zapier) Whether it's building chatbots, creating recommendation systems, automating tasks with AI agents, or developing search engines and RAG-based systems, I love turning complex AI challenges into real-world solutions. ๐Ÿ”น What I Bring to the Table โœ… Practical AI Solutions โ€“ I develop AI systems that donโ€™t just look good on paper โ€” they deliver real-world results. โœ… LLMs & RAG Systems โ€“ Skilled in LangChain, LlamaIndex, and vector databases to build cutting-edge AI applications. โœ… Computer Vision & NLP โ€“ From facial recognition to advanced text processing, I cover a broad range of vision and language use cases. โœ… Smart Search & Ranking โ€“ Designing intelligent search engines with optimized ranking algorithms for better discovery and relevance. โœ… AI Agents & Workflow Automation โ€“ Leveraging autonomous agents to streamline operations and automate complex tasks. โœ…Custom Automation Workflows - I design workflows using tools like Zapier, n8n, and Go High Level (GHL) that fit your specific needs. ๐Ÿ”น Why Work With Me? โœ” Top-Rated plus on Upwork โ€“ 100% Job Success & 5-star reviews from happy clients. โœ” Results-Driven โ€“ I focus on delivering AI solutions that actually bring value to your business. โœ” Clear Communication โ€“ No tech jargon overloadโ€”I keep things simple and transparent. โœ” End-to-End AI Development โ€“ From idea to deployment, I handle everything. ๐Ÿ’ผ Customer & Peer Reviews: "Atique is a talented data scientist/computer scientist. He is proactive, positive, and hardworking. Together we worked on IoT control of batteries to optimise the energy consumption (based on MPC), forecasting of PV production, electricity consumption, and electricity prices,... He is however a fast learner and will be efficient in lots of different application areas of AI/data science." ๐Ÿ’ฏ - Senior Data Scientist @Sirris "Atique is a talented addition to any data science team! His skills are strong and he brings a positive energy and resilience that can really keep a team moving towards it goals! " ๐Ÿ˜Ž - Product Manager at Meta "Atique is an expert in machine learning systems. He did a very impressive analysis of the project and helped me understand it in detail. He delivered on time and I will definitely will use his services again!! Thanks atique!! If you are looking for a very kind and communicative person to deliver 100% quality, this is the one." ๐Ÿ˜Ž "Amazing seller, very professional and would definitely be back. This is a seller you can trust 5 stars for me." ๐Ÿคฉ

  • Data Science
  • Data Analysis
  • Machine Learning
  • Python
  • Deep Neural Network
  • Deep Learning
  • Data Management
  • Artificial Intelligence
  • Predictive Analytics
  • Automation
  • n8n
  • LLM Prompt Engineering
  • Web Development
Charles Gwellem A.

Ruesselsheim am Main, Germany

$50/hr
5.0
18 jobs

I help biotech companies, pharma teams, and research institutions turn complex genomic and multi-omics data into clear, publication-ready insights โ€” on time and with full reproducibility. What I specialize in: - Bulk RNA-seq & single-cell RNA-seq (scRNA-seq) analysis - Spatial transcriptomics (Visium) - DNA methylation, metabolomics & microbiome data - Differential gene expression & splicing analysis - Pathway & gene set enrichment analysis (GSEA) - Network analysis & pseudotime inference - Dimensionality reduction & unsupervised clustering - Multi-omics data integration (single-cell, spatial, immune repertoire, clinical metadata) Tools & Stack: R/Bioconductor and Python โ€” with a strong focus on clean, well-documented, reproducible pipelines and publication-quality figures. How I work: I adapt to data quality issues, complex experimental designs, and tight timelines. Every deliverable includes clear documentation so your team can build on the results. I hold a 100% Job Success Score and Top Rated status on Upwork. Send me a message describing your dataset and your goal โ€” I will tell you honestly whether and how I can help.

  • Data Analysis
  • Machine Learning
  • Python
  • R
  • Bioinformatics
  • Biology
  • Metabolomics
  • Statistical Analysis
  • Seurat
  • Regression Analysis
  • Spatial Analysis
  • Biostatistics
  • Biometrics
  • Time Series Analysis
  • Hypothesis Testing
  • Life Science
  • Quantitative Analysis
  • Computational Neuroscience
Faten B.

Trier, Germany

$100/hr
5.0
11 jobs

โœจ Upwork Expert-Vetted & ๐“๐จ๐ฉ ๐ซ๐š๐ญ๐ž๐ ๐ฉ๐ฅ๐ฎ๐ฌ (Top 1%) โœจ 100 % Job Success in large Projects Senior Data Scientist with a combined 6+ years of experience [๐‡๐ž๐š๐ฅ๐ญ๐ก๐œ๐š๐ซ๐ž, ๐’๐จ๐œ๐ข๐š๐ฅ ๐’๐ž๐œ๐ฎ๐ซ๐ข๐ญ๐ฒ, ๐“๐จ๐ฎ๐ซ๐ข๐ฌ๐ฆ, ๐…๐ข๐ง๐ญ๐ž๐œ๐ก Industries] I help businesses maximize their growth potential through data-driven solutions and assist Tech teams to build robust ML solutions from real-world Sensors and Time Series data. I specialize in Feature Engineering, Event Detection, and Predictive Modeling, with a strong focus on model reliability and uncertainty estimation. I also deliver clear Technical Reports, Presentations and decision focused documentation that bridge research and product. EXPERTISE - Research | Custom Technical Reports (Text + Figures + Interpretation) | Code/Scientific Documentation. - Data Analytics: Data Cleaning, Exploratory Analysis, and actionable Insight generation. - Designing, Training and Evaluating AI/Machine Learning models. - Collecting, Cleaning and Managing data and databases. - Developing the data and result into a format easily representable to other employees, investors, and other researchers. SKILLSET โœ… Time Series Analysis (Sensors/ Signals, Accelerometer ...) โœ… Biological Signals: Heart and Breathing, Temperature, Muscle activity, Brain activity, Blood Pressure, Oxygen levels and Body Composition. - Trend/ Behavioral Analysis and Profiling. - IoT/Sensor Data Diagnostics - Anomaly Detection - Exploratory Data Analysis - Scoping sessions and Dataโ€‘Quality assessments โœ… Python (Pandasโ€“Scikit-learnโ€“Numpyโ€“Scipy, Seabornโ€“Kerasโ€“Pytorchโ€“TensorFlow). โœ… R (ggplot2โ€“dplyrโ€“tidyr โ€“caretโ€“Shinyโ€“Tidyquant). โœ… Machine Learning Algorithms (PCA, K-means, Random Forest, XGboost, Logistic Regression, SVM, etc..). โœ… Deep Learning (Neural Networks, CNN, RNN, ...) also the tools: - SQL/No-SQL: MongoDB, MySQL. - Tableau | Power BI. - MATLAB | R-studio. - Git - C/C++ I'm adaptable, quick, and reliable, with a sharp eye for details and excellent communication skills (6 languages). I'm eager to help you solve any data science challenges you might have. ------------------------------------------------------------------------------------------------------------------------- Testimonials from some of my clients: โœจ "Working with Faten was effortless. She is dependable, while also incredibly collaborative. Her dedication to work and ability to deliver consistently on-time and beyond expectations render her invaluable for any project. I highly recommend Faten to anyone seeking a skilled, reliable and communicative Machine Learning Engineer and or Data Scientist for their next initiative." โœจ"Faten is very professional - prompt feedback, clear communication, and easy to work with. Would recommend working with Faten on ANY project!" โœจ"It was an absolute pleasure to work with Faten. She is super clear on communication and has a creative curiosity about all projects. She is a brilliant soundboard and fits into the projects, regardless of where she is asked to assist. She always adds value. I will recommend her without reservation"

  • Data Science
  • Data Analysis
  • Data Science Consultation
  • Machine Learning
  • Python
  • R
  • Statistics
  • Classification
  • Deep Learning
  • Feature Extraction
  • Statistical Analysis
  • Neural Network
  • Time Series Analysis
  • Time Series Forecasting
  • Modeling
  • Wearables Software
  • Sensor
  • Data Visualization
  • Report
  • Retrieval Augmented Generation
Steven B.

Oechsen, Germany

$90/hr
5.0
24 jobs

๐Ÿš€ Unlock faster, smarter sales growth with AI-powered workflows - without hiring in-house tech experts, managing complex tools yourself, or getting stuck in rigid, one-size-fits-all systems. I help remote B2B service firms and agencies simplify their sales and marketing processes with lean, AI-powered workflow automation that: โœ… Frees your team from repetitive tasks โœ… Improves lead quality and conversion rates โœ… Shortens sales cycles and speeds up revenue โœ… Delivers measurable ROI - within weeks, not months Many teams I work with have tried adding tools or hiring freelancers before. But too often, the results donโ€™t stick: โŒ Overbuilt systems and a ton of code no one adopts โŒ Flashy AI hacks that create more work โŒ โ€œBig techโ€ solutions that donโ€™t fit your teamโ€™s reality โŒ Projects that drag on endlessly without clear ROI in a human's lifetime If you have experienced this, then you're in the right place. ๐Ÿ™Œ I partner closely with growth-minded leaders to design and deploy automation that fits your processes, your people, and your goals. No bloated tech stacks. No overengineering. Just smarter, simpler workflows that scale. Hereโ€™s how I can support you: ๐Ÿ“Œ Sales & marketing workflow automation (lead capture, qualification, follow-up) ๐Ÿ“Œ CRM optimization & integration (HubSpot, Airtable, custom APIs) ๐Ÿ“Œ AI-powered outreach systems (personalized messaging & proposal generation) ๐Ÿ“Œ Building smart AI workflows with N8N, Make.com, and LLMs ๐Ÿ“Œ Designing and deploying AI Agent systems with Relevance AI ๐Ÿ“Œ Revenue operations process design (RevOps) I bring a rare mix of: ๐Ÿš€ Business strategy (what matters for growth) โš™๏ธ Technical execution (making systems actually work) ๐Ÿ‘ฅ Team adoption (so the change sticks) This isnโ€™t โ€œtech for techโ€™s sake.โ€ Itโ€™s about enabling your team to move faster, win more deals, and focus on high-value work. How does working with me look like? โ–ถ๏ธ We analyze where you are at. โžก๏ธ We collaborate to set realistic goals. โคด๏ธ I build a little (or work with a team to build). ๐Ÿ” We talk about findings and restart. By iteratively refining solutions, we effectively turn potential into progress and investments into ROI. ๐Ÿ“ฉ Ready to streamline your sales processes and unlock smarter revenue growth? Send me a message with your challenges, and Iโ€™ll help you map out a path to measurable results. ๐Ÿ™Œ

  • Data Science
  • Data Analysis
  • System Analysis
  • Solution Architecture
  • Project Management
  • Product Development
  • Cloud Engineering
  • Cloud Computing
  • Data Management
  • Generative AI
  • AI Consulting
  • AI Implementation
  • Marketing Automation
  • LLM Prompt Engineering
  • Process Optimization
Hwei Geok N.

Duesseldorf, Germany

$150/hr
5.0
21 jobs

I'm an Upwork Expert-Vetted Data Scientist who covers what usually takes two specialists: classic ML and modern LLM systems, shipped to production. Nobody understands your business like you do, and you know exactly the bottleneck you want gone. You want someone who can see it just as clearly, bring it to life the way you imagined, and build it to last. That has been my track record. Imagine handing off your idea, and what comes back makes you say, "This is exactly what I had in mind!" That is the feedback I hear most from my clients. Here's what working together looks like: You explain the vision. I turn it into a clear plan, build the system end-to-end, and ship something your team can actually run and trust. Whether it's an LLM or RAG application, an AI agent, or a forecasting or anomaly-detection engine, it is handed over to you already deployed in production, documented, and yours to keep building on. What my clients say: โ†’ "She took our vision as her own and brought it to life." โ†’ "When she says she'll handle something, it's done." โ†’ "Hwei is the proverbial needle in a haystack. She gets it. She gets it done." Recent projects: โ€ข A US women's health startup: I led the AI intelligence layer behind their production multi-agent chatbot, live ahead of their fundraise. โ€ข A Fortune 500 consumer brand: I built a shelf-life forecasting platform that turned weeks of manual modeling into 30-second predictions. โ€ข An Italian telecom firm: I built an LLM document validation pipeline that cut compliance review from days to minutes, with zero false approvals against their own 99.7% precision target. โ€ข A Dutch water consortium: I built an anomaly-detection system that caught real contamination with zero false alarms, then grew it into a 12.3M-measurement data platform that their own team can run without a developer. โ†’ Expert-Vetted ยท Top 1% on Upwork ยท 100% Job Success โ†’ ML and AI since 2018 ยท 8 published papers ยท Trained at Fraunhofer SCAI and the University of Hamburg Tell me what you're trying to build, and I'll reply with a clear path forward, built around your goals. ================== Tools and capabilities: โ€ข Generative AI and LLMs: large language models, RAG (Retrieval Augmented Generation), AI agents and multi-agent systems, chatbots, prompt engineering, LLM evaluation, vector databases, LangChain, Pydantic AI โ€ข Machine learning: predictive modeling, anomaly detection, time series forecasting, predictive maintenance, statistical analysis, deep learning, computer vision, natural language processing (NLP) โ€ข Engineering and delivery: Python, FastAPI, Docker, cloud deployment (AWS, Azure, Render), data analysis, data pipelines, interactive dashboards (R Shiny, Streamlit, Gradio), data visualization โ€ข Model APIs: OpenAI, Anthropic Claude, Google Gemini, Hugging Face โ€ข Consulting: artificial intelligence (AI) strategy, AI implementation, AI consulting, code audits, knowledge transfer

  • Data Science
  • Machine Learning
  • Python
  • Large Language Model
  • Retrieval Augmented Generation
  • AI Agent Development
  • Generative AI
  • Prompt Engineering
  • Artificial Intelligence
  • Anomaly Detection
  • Time Series Forecasting
  • Predictive Analytics
  • Data Engineering
  • LangChain
  • Computer Vision
  • Statistical Analysis
  • Chatbot Development
  • Data Visualization
  • AI Consulting
  • AI Implementation

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