Ray Experts in Germany
in minutes from over 15,000 CVs with the power of AI.Hire experts who run distributed Python workloads, tune Ray clusters, and ship Ray Serve, Ray Train, and Ray Data projects with precision. Get fast, accurate matching with vetted, available freelancers.
Meet FRATCH Experts in Germany, who have recently used Ray
Tezcan Dilshener
Last position:
Solution Architect / Project Manager at German Football Association
- Overall responsibility for the project lifecycle from scope definition to completion
- Close collaboration with platform teams, IT leaders, and external service providers
- Application of SAFe principles and structured sprint work
- Creation of a migration roadmap with clear milestones
- Monitoring of the lifecycle: onboarding, repository migration, replication of permissions, and system tests
- Visualization of the architecture with PlantUML and Gliffy as well as documentation in Confluence
- Regular status reports and running knowledge transfer sessions
Marko Oršolić
Last position:
System Administrator in a 6-person Team at FITS
- System administration of FreeBSD 11, 12 and 13.1 in a secure cloud software solution
- Administration of proxy servers for FITS and its clients, banks and state banks
- Administration of secure internet solutions
- Administration of secure mail solutions and mail gateways
- Administration of Apache 2.4 web servers
- Planning and maintenance of servers and network components in FNT Command
- Incident, change and ticket handling, especially troubleshooting network issues using Splunk and ARS
- Troubleshooting and log file analysis using Splunk Enterprise
- Monitoring with Nagios
- Ordering, provisioning and installation of certificates on Apache web servers, Nginx web servers and load balancers
- Hardware: HP ProLiant DL380 Gen 9 and 10, Cisco Catalyst
- Software: FreeBSD 11, 12 and 13.2, FNT Command, shell scripts, MySQL databases, ServiceNow, ARS, Splunk Enterprise 8.15
Michael Henze
Last position:
Agile Coach at BMW AG (Freelance)
Workshop preparation and facilitation for the BMW digital team to plan the Matko Cockpit product delivery for the second half of the year.
Team building and preparation of the Matko Cockpit product delivery roadmap.
Stakeholder alignment and workshop design.
Managing the workshop agenda, identifying focus topics, and topic prioritization.
Review of team sentiment and capturing impressions.
Identification, summary, and documentation of action items.
Methodologies used: Ice Breaker, Brain Storming, Story Points, Magic Estimation, Hypothesis Statement, Problem Statement, Dot Voting, and Parking Lot.
Sven Mones
Last position:
Senior Project Management & Product Ownership at Anonymous
- Further development of the web app for creating Zeppelin maintenance contracts by fully covering all contract configurations, automatic calculation of total costs and inspection intervals, SSO login and Jenkins-based deployment with automated tests
- Replacement of a legacy-based calculation service with a modern API integration compliant with corporate IT standards
- Result: complete digitization of the process, functionally superior and deeply integrated into the IT infrastructure
Cat Johnson
Last position:
Digital Designer at Freelance
While I moved to Berlin, I also made the switch to freelancing, providing a personalised, thorough and reliable service covering all aspects of design.
Clients include:
- Secret Cinema - Working alongside Big DB, I redesigned Secret Cinema's website, transforming it to effectively draw in and engage new customers
- London School of Economics and Political Science (LSE) - I have designed several reports and documents for LSE funded platform, AHOP, ensuring content and data is clearly communicated
- International Primary Care Respiratory Group (IPCRG) - After designing their website, I created a magazine for IPCRG to support patients living with COPD, focusing on accessibility for older patients
Maria Shaima Joy
Last position:
Master Thesis – Research & Development at FZI Forschungszentrum Informatik
- Developed multi-agent automotive simulation systems using MetaDrive for validating autonomous driving functions with reinforcement learning
- Developed, optimized, and debugged algorithms for ADAS behavior modeling using radar, LiDAR, camera, and IMU sensors
- Built neural network models and automated MLOps pipelines for data preprocessing, logging, evaluation, and large-scale experiments
- Integrated Generative AI-based scenario variation tools for automated scenario generation
- Technologies: Python, PyTorch, TensorFlow, Ray RLlib, MetaDrive
Kirti Thakur
Last position:
VR Multiplayer Game - Fruit Ninja at Bauhaus Universität Weimar
- Designed and implemented immersive VR navigation including custom steering with ground following and FOV vignette to enhance user comfort and reduce motion sickness
- Developed three-phase teleportation system with real-time network synchronization, along with virtual hand and ray-based object interaction for intuitive gameplay
- Integrated advanced interaction techniques such as GoGo extended reach and networked grab mechanics with ownership transfer for seamless multiplayer experience
Oliver Albinus
Last position:
Senior IT System Engineer – Software Packaging / Software Distribution at Finanz Informatik Technologie Service (FITS) / LBBW
- Migration from Windows 7 to Windows 10 and from Windows 10 to Windows 11
- Creating software packages for Windows 10 & Windows 11 as well as Windows Server 2012 - 2022
- Integrating software packages into DSM in a Windows Server 2012 / 2016 environment
- Integrating and distributing software packages in SCCM in a Windows 10 and Windows Server 2016 – 2022 environment
- Quality assurance of software packages including error analysis
- Technologies: Windows 10 / 11, Windows Server 2012 / 2016 / 2019 / 2022, MS SCCM, Ivanti DSM, VMware
Carolin Poloczek
Last position:
Systemic Business Coach
- Recognized by the German Federal Coaching Association (Deutscher Bundesverband Coaching e.V.)
Kornél Lehőcz
Last position:
Computer Vision Algorithm Engineer (contract) at Sony R&D Center, Stuttgart Laboratory 1
- Conducted research and development in the field of large-scale 3D reconstruction
Aydın Atabay
Last position:
Freelancer Virtual Defect Manager - ECUs at Cariad SE
- Coordination, planning and reporting of base software bugs between software/hardware supplier, internal departments and functional owners
Oliver Glück
Last position:
Vice President Global Marketing at Torqeedo
- Reported directly to co-founder and CEO as well as subsequent C-level executives, member of the management team
- Led a nine-person department and in-house design studio in developing and managing brand and corporate marketing activities for commercial applications and the premium leisure sector
- Responsible for positioning and articulating the company's purpose, mission, vision, and sustainability achievements in external and internal communications, resulting in a unique brand perception
- Ensured strategic brand management with responsibility for all brand-related KPIs
- Positioned the brand in core boating industry segments and emerging mobility areas, driving collaborations with BMW, Tyde, Candela, Frauscher, Group Beneteau, Zodiac, Tornado, VSR, Nautor Swan, Contest, Spirit, OCS, Saffier, America’s Cup, and other innovative market segments
- Developed sponsorships and partnerships, managed international boat shows (e.g., boot Düsseldorf, METS, Electric and Hybrid, Cannes, Genova), and steered premium events (Voile de St. Tropez, Palma Vela, and press events in Monaco, Miami, Milan, Starnberg)
- Orchestrated growth of brand and product awareness, increasing revenue from €23.0 million in 2017 to €70.0 million in 2022
- Identified key segments and target groups for product development, sales, aftermarket services, and communication strategies
- Collaborated with cross-functional teams including design, R&D, procurement, supply chain, product and program management, production, sales, service, and aftermarket
- Planned the launch of a new web shop aligned with a new ERP system for EMEA, North America, and APAC
- Produced all creative communication assets including content, platforms, and campaigns
- Held responsibility for PR and media strategy, managing the media budget and planning
- Provided leadership and management oversight for external marketing communications agencies and partners
- Managed budgets and leadership responsibilities as Vice President, overseeing four direct reports and a team of nine members
Harald Wittig
Last position:
Creative Director / Copywriter / Creative Consultant at Freelance
- Worked with agencies such as BBDO Interone, Envy, Ray Sono, Brand Spiders, Freiheit Gruppe, Hauser Lacour, Publicis Pixelpark, Saatchi & Saatchi, Lommel Ludwig, Ogilvy, Spark44, DBFS, The Game, DDB and many more
- Created ideas, campaigns, and creative content for brands including LG Electronics, Porsche, CUPRA, Seat, Axess AG, Occhio, B. Braun, DHL, Rewe, Commerz Real, Sony PlayStation, Maxon, DG Verlag, Abbott, Woerle, Universal Investment, and BMW
Mirco Marahrens
Last position:
Senior Software Engineer at Vattenfall
- Lead of the platform engineering team for the development of a platform for energy trading, focusing on high availability, low latency, and scalability of libraries and services
- Supporting quants and market access solutions for energy trading, including market access integration and deployment of algorithmic trading strategies
Discover over 15,000 top freelancers
Statistics of experts using Ray
Aggregated from the professional profiles of matched freelancers.
Experience
20 years
Position duration
2.2 years
Positions per freelancer
14
Top business areas
Product Development, Information Technology, Project Management
Top industries
Information Technology, Automotive, Manufacturing
Certification focus areas
Information Technology, Human Resources, Business Intelligence
Bachelor's degree or higher
100%
Master's degree or higher
67%
Doctorate
11%
Certifications per freelancer
2
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 Germany 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 Germany using Ray
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 Ray is
Ray is a distributed computing framework for Python teams that need to scale workloads across many machines without rewriting core logic. It is used for machine learning training, batch processing, model serving, hyperparameter tuning, and other data-heavy jobs that need parallel execution.
Key parts
Ray usually appears with a small set of modules that shape the work:
- Ray Data for large data pipelines
- Ray Train for distributed model training
- Ray Tune for experiment search
- Ray Serve for model and API serving
- Ray Core for task and actor orchestration
Typical work
- Split Python workloads into parallel tasks and actors
- Build training and inference pipelines on Ray clusters
- Connect Ray to cloud storage, notebooks, and data warehouses
- Package models for serving with Ray Serve
- Stabilize jobs that fail under load or use too many resources
Why specialists matter
Ray is powerful, but it rewards people who understand scheduling, memory use, placement, and cluster behavior. Companies bring in freelance specialists when they need a clean first setup, need to rescue a slow pipeline, or want to move from local notebooks to repeatable production runs.
Strong skills
Strong Ray professionals know Python well and can reason about distributed systems without overcomplicating the code. They work comfortably with containers, cloud compute, observability tools, and the surrounding ML stack, including data prep, experiment tracking, and deployment.
Germany delivery
In Germany, Ray work often sits inside data teams, research groups, and product teams that need reliable delivery across locations. Remote collaboration is common, but on-site work can help when a company wants close access to infrastructure, stakeholders, or sensitive internal systems.
Frequently asked questions
Quick answers to the questions that come up most around Ray.
Ray is used to scale Python work across machines when a local script is no longer enough. Companies use it for distributed training, batch data processing, experiment tuning, and serving models or internal APIs.
Ray is often chosen when the team wants flexible Python-native distributed execution, especially for ML and model-serving work. Spark is still common for classic large-scale data processing, while Dask is often seen in similar Python data workflows. The right choice depends on the workload, the team’s codebase, and how much orchestration the project needs.
A strong Ray specialist usually brings solid Python, cloud, and container skills. Helpful extras include Kubernetes, Docker, ML tooling, observability, and an understanding of how data moves through training and serving pipelines.
A company usually needs Ray expertise when a prototype must become production-ready, a cluster is unstable, or a pipeline is too slow and hard to maintain. Freelance specialists are also useful when a team needs a short, focused push for design, implementation, or troubleshooting.
Yes, most Ray work can be done remotely because the core tasks happen in code, cluster configuration, and review sessions. In Germany, on-site work is mainly useful when teams want closer coordination with infrastructure owners, security stakeholders, or local research groups.
Ray Train is for distributed model training, while Ray Serve is for deploying models and Python services behind an API. Many projects use both: first to train or fine-tune a model, then to serve it in production with a stable interface.
Look for clear examples of production work, not just notebook demos. A strong Ray specialist can explain cluster design, resource limits, failure handling, and how they kept jobs reliable under real load.
A single Ray freelancer can often handle setup, refactoring, performance tuning, or a defined delivery like a training pipeline or serving layer. Larger platform migrations or complex production rollouts may need a few specialists working together, especially when cloud, data, and ML pieces all change at once.
The average hourly rate of freelancers in Germany who have used Ray in their recent projects is 91 €, which corresponds to a daily rate of about 731 € based on an 8-hour working day.
Of the freelancers in Germany who have used Ray in their recent projects, 100% hold at least a Bachelor's degree, 67% hold at least a Master's degree, and 11% hold a doctorate.
On average, freelancers in Germany who have used Ray in their recent projects have 20 years of professional experience, with a single engagement typically lasting around 2.2 years.
The most common languages among freelancers in Germany who have used Ray in their recent projects are English (100%), German (93%), and French (21%).
The most common industries among freelancers in Germany who have used Ray in their recent projects are Information Technology (71%), Automotive (64%), and Manufacturing (57%).
The most common business areas among freelancers in Germany who have used Ray in their recent projects are Product Development (79%), Information Technology (71%), and Project Management (64%).
Main locations of FRATCH Experts, who have recently used Ray
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.
Berlin Hamburg Munich Cologne Frankfurt Stuttgart Dusseldorf Leipzig Dortmund Essen Bremen Dresden Hanover Nuremberg Request a free demo
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Philipp Thomaschewski
FRATCH CEO
