Ruby Experts in Munich
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Meet FRATCH Experts in Munich, who have recently used Ruby
Karen Manukyan
Last position:
Personal AI Engineering Project — Croky AI at Crocky AI
Product:
- Built a production-ready AI platform for generating brand-aware marketing images and videos from product data, user requirements, and uploaded media.
- Own the platform architecture, technical roadmap, API design, security, deployment workflow, operational reliability, and model-provider strategy.
- Developed the core platform in .NET and built supporting AI and workflow prototypes in Python, applying language-independent API contracts and structured interfaces between services and model providers.
- Implemented reliable background processing with RabbitMQ, persisted workflow state, idempotent handling, retries, failure recovery, logging, secure storage, authorization, and credit accounting.
- Made pragmatic build-versus-buy and model-routing decisions based on reliability, latency, cost, and maintainability rather than novelty.
Agent Orchestration & RAG Systems
- Built and compared agent workflows using Microsoft Agent Framework, LangGraph, and LangChain, including tool use, conditional routing, clarification steps, state management, and hand-offs between agents.
- Implemented reusable .NET components for agents, prompts, tools, model providers, structured responses, and retrieval with pyvector, making it easier to change AI providers without rewriting the core workflow.
Serge Kalinin
Last position:
MLOps (machine learning operations) at REWE Digital GmbH
- It is like a startup within REWE, where we have to build a new forecasting system on Google Cloud Platform from the scratch. Although, officially my role is called MLOps, my actual tasks also include development of data processing pipelines (data engineering) and data scientists tasks such as feature engineering and model trainings.
- GCP: Terraform (tofu), Vertex AI (Kubeflow), Cloud Run, IAM, Google Cloud Storage, BigQuery, Artifact Registry
- Data engineering: Snowflake as the main data warehouse, Terraform, DBT for data model implementations
- CI/CD: GitLab. We have built a CI/CD pipeline that automates deployments of new releases up to production environment
Florian Großmann
Last position:
Senior IT Project Manager Security & Infrastructure & Business Development Manager HealthCare at CGI
- Responsible project manager for complex international infrastructure projects
- Coordinator and decision-maker for IT architects in network infrastructure and software with over 100,000 users
- End-to-end project management
- Launch and implementation of initiatives
- Project management of international infrastructure projects with C-level reporting
- Leading and coordinating IT architects
- Technical project management for merger and cloud transformation
- Delivery of international software and hardware rollouts
- Implementation of IT security projects and compliance
- Work with key technologies (e.g. 5G/6G standard)
- Support of complex defense and aerospace projects (e.g. Ariane 6, Eurodrone)
- Building the healthcare and life sciences business unit
- Creating and leading internal employee trainings
Vitor Rodrigues
Last position:
Test Coordinator Automation at Pro4all
- Designed and built from scratch the automation framework using Playwright, Typescript, JavaScript, Gherkin, Cucumber, BDD, Maven, IntelliJ IDEA
- Defined, developed and maintained test plans, test scripts, reports and other QA documentation in Confluence
- Created and maintained test data with SQL Server Management Studio, Toad and Faker.js
- Performed web services and API testing using Swagger Open API, SoapUI, JSON, HTML and XML
- Executed functional, smoke, regression, black box, GUI, cross-browser, UAT and E2E testing using CrossBrowserTesting and Safari Web Inspector
- Integrated and maintained automated scripts within sprints following Kanban, CI/CD, GitHub, Docker, Azure Pipelines, Agile, Scrum, Kafka and Kibana
- Raised and managed defects in Azure DevOps
- Conducted mobile testing with Robot Framework and Appium
Jennifer Kiunke
Last position:
AI Product Manager and Engineer at Human-in-the-Loop Studio
- Architected and built a GenAI-based automated asset-generation tool for social media campaigns using Nano Banana and Python. It takes a campaign brief, target audience, and two products as input, generates optimized prompts for image and text creation, and uses functions for text positioning, visually appealing overlays, resizing, and structured uploads to AWS S3.
- Engineered and built a multi-agent news intelligence platform with specialized roles including retriever agents (Tavily web scraping), synthesizer agents, and Claude as curator/orchestrator, designing autonomous agent collaboration patterns using LangChain and RAG.
- Built an autonomous customer service agent using n8n and LLMs, delivering end-to-end support automation with transparent reasoning, governance controls, and scalable workflow orchestration using Python and vector databases.
- Developed a financial validation engine featuring ML-powered anomaly detection for invoice plausibility, compliance automation, and risk mitigation using TensorFlow and SQL.
- Created a cost optimization application using OCR, AI, Pandas, and NumPy for data analysis to identify cost optimization potential.
Subodh Kumar
Last position:
Senior Software Engineer at EDAG Engineering GmbH
Project Title: Path Planning Module Development (Oct 2024 – Jun 2025)
Developed path planning module using C++14 and CMake
Implemented gRPC communication protocol between modules
Performed unit testing using Pytest framework and Python
Project Title: HMI Programming for Battery, Fuel Cell Electric Vehicle (Aug 2023 – Sep 2024)
Developed HMI software for BEV/FCEV using Ruby and Crystal for backend
Implemented frontend using Vue.js framework
Conducted bug fixes and simulator testing
Project Title: IFHOST CAN Bus Programming (Jan 2023 – Jul 2023)
Programmed CAN bus software using C and C++
Executed unit tests with Google Test framework
Performed integration testing using CAPL in Vector CANalyzer
Participated in onsite testing
Jan Wahler
Last position:
Technical Consultant at AI Beratung (KMU)
- Evaluation of RAG for legal advisory (build or buy)
- Evaluation and POC of RAG for an ERP time tracking module
- Consulting on foundation model selection
- Setup AI development environment (eliminating shadow AI)
- AI strategy consulting
- AI-assisted code creation and context engineering make change sets larger
- Strong software engineering expertise, code reviews and safeguarding through pipelines and domain-specific automated test cases
Discover over 15,000 top freelancers
Statistics of experts using Ruby
Aggregated from the professional profiles of matched freelancers.
Experience
16 years (Germany: 18 years)
Position duration
1.6 years (Germany: 3.1 years)
Positions per freelancer
10 (Germany: 12)
Top business areas
Information Technology, Product Development, Operations
Top industries
Information Technology, Retail, Energy
Certification focus areas
Information Technology, Project Management, Human Resources
Bachelor's degree or higher
100% (Germany: 91%)
Master's degree or higher
71% (Germany: 54%)
Doctorate
14% (Germany: 5%)
Certifications per freelancer
6 (Germany: 2)
Most common languages
English, German, French
Speak two or more languages
100% (Germany: 99%)
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 Munich 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 Munich using Ruby
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
Ruby in use
Ruby is a concise, object-oriented language used for web applications, APIs, internal tools, automation, and integration work. It is often chosen when teams want readable code, quick change cycles, and a mature ecosystem around Ruby on Rails.
Typical work
- Ruby on Rails application development
- API and backend service work
- Background jobs and scheduled tasks
- Legacy Ruby maintenance and refactoring
- Test coverage and release support
Tooling around it
Strong specialists work comfortably with Rails, Bundler, RSpec, Sidekiq, ActiveRecord, and common deployment setups. They know how to keep dependencies tidy, reduce technical debt, and make sure the codebase stays easy to extend.
When companies need help
Teams bring in freelance Ruby experts when an application grows, a release is blocked, or legacy code needs careful cleanup. They are also useful for short-term product work, incident support, and rebuilding parts of a system without slowing the rest of the team.
What good specialists do
Good Ruby professionals write clear code, use tests well, and understand how web requests, data models, and background processing fit together. They spot weak spots in performance, security, and maintainability before they become expensive.
Munich projects
In Munich, Ruby is often used for product platforms, SaaS tools, and internal systems that need reliable delivery and close collaboration. Many projects work well remotely, but on-site sessions can help when teams need fast alignment, domain review, or support for mixed German and English communication.
Frequently asked questions
What clients ask us most about Ruby — answered in short.
Ruby is commonly used for web applications, APIs, automation scripts, internal tools, and service layers that need clear, maintainable code. Many teams choose it with Ruby on Rails when they want to move quickly without losing structure. It also fits maintenance work on older systems that still need safe change.
Ruby is often preferred when readability and developer flow matter more than strict ceremony. Compared with Python, it is especially known for Rails and a very expressive style; compared with JavaScript, it is usually used more on the backend. The right choice depends on the existing stack and the kind of delivery you need.
Ruby is the language. Ruby on Rails is the web framework built on top of it. A freelancer may work in pure Ruby for automation or backend logic, or in Rails for full web products, admin areas, and API work.
A strong Ruby specialist should also know SQL, web APIs, testing tools, and deployment basics. For Rails work, skills with ActiveRecord, background jobs, caching, and performance tuning are especially useful. Experience with Git, code review, and production debugging also matters.
Ruby work can start with a focused task if the codebase is clean and the scope is clear. For legacy systems, a freelancer needs more context about business rules, hidden dependencies, and release risk. Good documentation and access to staging or logs make onboarding much faster.
Yes, Ruby experts often work well remotely because most tasks are code and review driven. In Munich, on-site time can still help for workshops, discovery, or product discussions with German-speaking stakeholders. The best setup is usually a mix based on the project phase.
A strong Ruby professional writes readable code, adds focused tests, and explains trade-offs clearly. Look for experience with real production systems, not only tutorials or sample apps. Good signs are clean refactoring, stable API changes, and careful handling of edge cases.
Ruby projects often reward specialists who can balance speed with code quality. Freelancers should expect a mix of feature work, bug fixes, and cleanup, especially in mature Rails codebases. Clear tickets, quick feedback, and direct access to product context usually improve the work.
The average hourly rate of freelancers in Munich, Germany who have used Ruby in their recent projects is 112 €, which corresponds to a daily rate of about 898 € based on an 8-hour working day.
Of the freelancers in Munich, Germany who have used Ruby in their recent projects, 100% hold at least a Bachelor's degree, 71% hold at least a Master's degree, and 14% hold a doctorate.
On average, freelancers in Munich, Germany who have used Ruby in their recent projects have 16 years of professional experience, with a single engagement typically lasting around 1.6 years.
The most common languages among freelancers in Munich, Germany who have used Ruby in their recent projects are English (100%), German (86%), and French (43%).
The most common industries among freelancers in Munich, Germany who have used Ruby in their recent projects are Information Technology (86%), Retail (71%), and Energy (57%).
The most common business areas among freelancers in Munich, Germany who have used Ruby in their recent projects are Information Technology (86%), Product Development (86%), and Operations (71%).
Main locations of FRATCH Experts, who have recently used Ruby
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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Philipp Thomaschewski
FRATCH CEO
