Blockchain Experts in Germany
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Meet FRATCH Experts in Germany, who have recently used Blockchain
Christian Frauer
Last position:
Department Head (Interim) at Municipal utilities and transport company
- Definition and setup of the subject areas
- Building a governance model for the department with the areas of responsibility
- IT strategy, project management, process management, and quality and sustainability management
- Developing a communication strategy within the group
- Creating the IT strategy
- Designing templates, guidelines, and processes for consistent work
- Capturing strategic guardrails and grouping ongoing projects – deriving a roadmap for strategic planning
- Reviewing ongoing projects
- Creating staffing calculations and volume structure
- Defining job profiles
Martin Zielinski
Last position:
Managing Director at Noorder Partners GmbH
- Leading strategic initiatives focused on delivering exceptional results from initial project phases, ensuring optimal execution and stakeholder satisfaction across deeptech and interim decision management portfolios.
- Driving business development and client relationships across digital transformation and innovation projects, expanding market presence and revenue streams.
- Establishing operational frameworks and quality standards to maintain excellence in service delivery and organizational performance.
- Managing company resources, budgets, and strategic partnerships to achieve sustainable growth and long-term viability.
Kiriakos Krastillis
Last position:
Tech Lead / Architect : OTTO API Platform at OTTO
maturing their API Practices on both, a Business and Technology level. My role encompasses strategy, architecture, developer advocacy as well as hands on software engineering, enabling both technical teams and business leadership to adopt and act on API- centric principles effectively. Coincidentally, we also establish GitOps, DX and Platform Best practices with this project.
Highlights:
- Aligning executives with the initiative by clarifying strategy, replacing misconceptions and myths with facts, clarifying the value of existing assets and enabling informed decision-making
- Formulating a way forward for API Lifecycle Management at OTTO
- Driving platform progress and fostering developer engagement by hands-on engineering work towards strategic goals
API Lifecycle Management, Team Topologies, Organizational Evolution, Regulatory, Platform Advocate, Developer Platform, Communities of Practice, Terraform, Kotlin, Kafka, Kong, WSO2, Apigee, Gravitee, Backstage, AsyncAPI, OpenAPI, API Design, AWS, react, nodejs, typescript, redocly, reactive programming, CDC, golang, gingonic, GitOps, DX (developer experience), stakeholder management, roadmaps, workshops, discovery.
Tymofii Sukhachov
Last position:
Senior Backend Developer at Medavis
- Developed backend features for Modern RIS, a web-based Radiology Information System integrated with the existing Classic RIS via WebView.
- Worked on a modular Spring Boot backend covering clinical workflows such as appointments, examinations, patients, orders, reporting, billing, and inventory.
- Contributed to event-driven architecture using domain events to decouple workflows across backend modules.
- Implemented REST/OpenAPI endpoints, service-layer business logic, DTO mapping, validation, and integration points for the React frontend.
- Worked with PostgreSQL-backed domain models, Liquibase database changes, read/write model separation, and legacy RIS database structures.
- Integrated authentication and authorization flows using Keycloak and OAuth2.
- Added and maintained unit/integration tests using JUnit, Rest Assured, Testcontainers, and project-specific test utilities.
- Supported CI/CD and local development workflows using Maven, Docker Compose, Jenkins, and generated OpenAPI clients.
Tech stack: Java 21, Spring Boot 3.5, Maven, PostgreSQL, Liquibase, Keycloak, OAuth2, REST, OpenAPI/Springdoc, MapStruct, Lombok, Docker, Testcontainers, Jenkins.
Safey Haroun
Last position:
Co-Founder/Managing Partner & Chief Architect at Prinkipia GmbH
- Co-founded Prinkipia and led the growth of the team
- Defined and developed the company’s strategic direction
- Provided leadership to engineering teams across projects as chief software architect
- Drove technical vision and decision-making to ensure high-quality engineering outcomes
- Built the company culture and laid the foundation for engineering principles and best practices
- Led engineering leadership and software architecture of Prinkipia's flagship Agentic AI product
Oliver Bodemer
Last position:
Senior Software Architect at private Project
- Designed blockchain-based learning platform with event-driven architecture, integrating RESTful APIs for personalized learning paths
- Developed scalable microservices using Java, Python, and React in Kubernetes, enabling real-time data processing
- Implemented smart contracts (Solidity) for secure course purchases and mentor engagement
- Led AI-supported matching system (DecisionTreeRegressor) to optimize learning recommendations
Sergei Minkov
Last position:
Program Manager / Program Lead (Contractor) at Telefonica
Program Manager for a radical architecture and IT transformation program (RAITT) reshaping the applications landscape (i.e. cloud transformation) and operating model into agile organisation.
- E2E readiness towards mass-market business division covering demand, delivery, test and roll-out phases
- Driving Telefonica internal teams and external system integrators to ensure delivery on time and in quality in adherence to defined processes
- Management of risks, issues and dependencies on program level
Thomas Ãœbermeier
Last position:
Head of Engineering - Midnight at IOG / Midnight
IOG (IOHK), is one of the world's pre-eminent blockchain infrastructure research and engineering companies.
- Converted a lingering R&D project into a cohesive, production-ready testnet; built and scaled the 35-member engineering team (Core, QA, SRE) to achieve this goal.
- Defined strategic direction and aligned technology development with business objectives as a key member of the leadership.
- Optimized software development processes and implemented agile methodologies, enhancing operational efficiency and code security.
- Delivered projects in a fast-paced startup environment through effective project management and resource allocation.
Last position:
Service Contact Person (Single Point of Contact) at waveIT GmbH
- Supports ICT project and program management across all project phases in a life sciences major project (volume approx. €3.5 billion).
- Supporting technical design.
- Managing RFI and change control processes.
- Continuous coordination of installation teams during construction and integration.
- Quality assurance of ICT systems.
- Evaluation of external planning documents and identification of optimization potentials.
- Coordinating with stakeholders to ensure Acceptance for Construction (AFC).
Ayusee Swain
Last position:
Intern at Schaeffler
- Built a Trend-Scouting AI system to automate technology intelligence in power electronics and semiconductors, combining Azure OpenAI with LangChain, Scrapy-based web crawling for structured, noise-free data acquisition, and automated PDF reporting for internal R&D use. Developed a FastAPI-based (Uvicorn) web application to validate LLM outputs, test prompt strategies, and enable interactive system evaluation.
- Developed a real-time STM32 binary telemetry debugger with a PyQt-based GUI, featuring header-based frame synchronization, anomaly detection, template-driven payload decoding, time-aligned buffering, and live signal visualization.
- Developed an AI-driven power inductor designer using surrogate regression models for accurate electromagnetic and thermal prediction. Integrated multi-objective NSGA-II optimization to generate efficient, manufacturable designs.
Tan Pham
Last position:
DevOps Engineer in the DevOps Team at Rise-World
- Implementation of specified DevOps solutions to automate infrastructure (Terraform, Bicep, CloudFormation, Ansible) on-premises datacenter (Ovirt, Proxmox, Ceph Cluster, MinIO) and private cloud.
- Administration, configuration and implementation of CI/CD DevOps pipelines (GitLab, GitFlow) to support development process (Artifactory, Prometheus, Istio, service mesh, Helm Chart, OpenShift (Red Hat Enterprise) / Kubernetes cluster), Red Hat Satellite.
- Administration, setup, monitoring and patching of Linux infrastructure based on Red Hat Enterprise for Dev, Test and QA.
- Use of Scrum and Kanban methods.
- Administration, configuration and implementation of security standards for deploying on Dev, Test, QA and Prod stages of the new ePA applications.
- Development of new plugins and add-ons needed on current infrastructure.
- Database support.
- Data analytics support (Python, Spark, Pandas, Power BI, Splunk Enterprise).
- Implementation of best practices for DevSecOps and BizDevOps using GitOps (ArgoCD), Streamlit framework, Semaphore Ansible UI.
- Configuration and testing of iperf, uperf, sysbench using benchmark-operator for external source data and IoT/MDM devices, creating reports via ELK / OpenSearch.
- Building a new Databricks platform to collect and analyze big data from different sources and IoT devices into Hadoop framework (Python, Pandas, PySpark, Power BI, Apache Airflow).
- Building backend data aggregation and processing to automate configuration deployment between different OpenShift clusters and big data framework (Python, Pandas, PySpark, Apache Spark, PostgreSQL, Django 2, Ansible Automation, Jira JSM).
- Building a new ML pipeline platform using Kubeflow, TensorFlow, KServe.
- Data extraction, transformation and loading from different data sources including structured and unstructured data to analytic DWH / big data cluster using Python, Pandas, Polars, Power BI, Django backend and PostgreSQL.
- Setup of new DevOps Test and QA HashiCorp Vault cluster for PKI and IAM.
- Configuration and testing of automated patching based on CVSS score, SIEM-integrated CVEs.
- Use of Nexpose and InsightVM to scan vulnerability events in network, host, container and application.
- Design and implementation of secure and scalable AWS architectures including VPC, EC2, S3, RDS and Route53 and similar setups on Azure and GCP.
- Automated system provisioning and deployment using CloudFormation templates.
- Configuration of IAM roles, policies and permissions to ensure secure access control.
- Patch management, backup automation and disaster recovery setup on AWS infrastructure.
- Monitoring and optimization of system performance using AWS CloudWatch and AWS Trusted Advisor.
- Support of VMware services (vSphere, Aria, Horizon) and the virtual desktop environment.
- Development and maintenance of CI/CD pipelines using Jenkins, GitLab CI/CD and AWS CodePipeline with interface to Nutanix.
- Configuration of AWS CloudWatch to monitor application performance and system events.
- Planning and execution of migration of on-premises applications to AWS cloud platforms.
- Deployment of containerized applications using Docker and Kubernetes in AWS environments.
- Deployment of internal software packages between availability zones using AWS CodeDeploy.
- Building and deploying ML models using Scikit-learn, XGBoost and Spark MLlib including hyperparameter tuning, model evaluation and production deployment.
Raphael Mankopf
Last position:
Founder / Quant Developer at Market Maker
- Crypto quant strategy development, automated trade execution, onchain data client (Ethereum / Solana)
- Data and trade architecture development for liquidity provision
Marcus Baßler
Last position:
Business Analyst & Project Manager Process Management IT Telecom Systems at Stadtwerke Bochum
- Led the realignment and positioning of the 'Connect' sector as a company-wide fiber-optic business
- Oversaw the architectural redesign of the system infrastructure, including process and staff structure optimization
- Designed and implemented a comprehensive modernization strategy for the IT and telecommunications systems
- Managed stakeholder relationships to ensure alignment between business goals and technological implementations
Levent Önder
Last position:
Senior Expert Transformation & Change Management at STC Services (Freelancer in cooperation)
- Developed an IT governance and oversight framework aligned with DORA requirements
- Coordinated and trained external service providers
- Optimized financial processes and performance
Athanasios Sarakatsanis
Last position:
Senior Manager at valantic Management Consulting
- Led bankable technical and commercial due diligences and IT carve-outs across hospitality, TIC energy, SaaS, and FMCG
- Conducted comprehensive IT assessments for mid-market companies across the DACH region
- Created pitch decks and sales materials driving new client acquisition in large-cap transactions
- Managed customer-facing projects with complex stakeholder landscapes, providing CIO support in project management, portfolio management, and coaching
Discover over 15,000 top freelancers
Statistics of experts using Blockchain
Aggregated from the professional profiles of matched freelancers.
Experience
18 years
Position duration
2.6 years
Positions per freelancer
11
Top business areas
Information Technology, Product Development, Project Management
Top industries
Information Technology, Banking and Finance, Professional Services
Certification focus areas
Information Technology, Project Management, Product Development
Bachelor's degree or higher
97%
Master's degree or higher
67%
Doctorate
9%
Certifications per freelancer
3
Most common languages
German, English, Spanish
Speak two or more languages
98%
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 Blockchain
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
Blockchain is a shared ledger for recording transactions and state changes across many systems. Companies use it for traceability, tokenized assets, identity flows, settlement, and tamper-evident records. The work often sits around Ethereum, Hyperledger, Bitcoin, and other distributed ledger systems.
Typical work
- Smart contract design and review
- Wallet, custody, and signing flows
- Node, network, and consensus setup
- Chain integration with apps and APIs
- Token and asset workflow support
Ecosystem
Strong professionals know more than one chain. They work with Solidity, EVM tools, RPC APIs, test networks, and libraries for signing, indexing, and event handling. In Germany, they are often brought in for finance, supply chain, energy, and identity projects that need clear technical control.
When to bring in help
Companies usually need freelance expertise when a project must move fast, needs a second pair of eyes on security, or has to connect blockchain logic to an existing product. That is common during proofs of concept, contract audits, migration work, and backend integration. Remote collaboration works well, but on-site workshops can help when teams need shared architecture decisions.
What strong experts do
- Write clean, testable contract logic
- Spot security and upgrade risks early
- Explain trade-offs in plain language
- Document assumptions and operational steps
- Align technical design with business goals
What to expect
Blockchain work only succeeds when the expert understands data flow, cryptography basics, and the business process behind the chain. Good specialists know when a distributed ledger is the right tool and when a simpler database is better. They also make sure deployment, monitoring, and access control are planned from the start.
Frequently asked questions
Quick answers to the questions that come up most around Blockchain.
Companies hire Blockchain specialists for smart contracts, token logic, wallet flows, and systems that need shared, traceable records. They also help with audits, chain integration, and proof-of-concept work when the product team needs to validate an idea quickly.
Blockchain keeps a distributed record that is hard to change and easy to verify across participants. A normal database is usually faster and simpler when one party controls the data. The right choice depends on whether trust, auditability, and shared control matter more than raw simplicity.
A Blockchain project often needs Ethereum knowledge when it uses the EVM, Solidity, or public-chain tools. Hyperledger matters more for permissioned business networks, while Bitcoin knowledge is useful for payment or custody work. The right expert knows the ecosystem that fits the use case instead of forcing one chain onto every problem.
A strong Blockchain professional usually also knows smart contract testing, cryptography basics, APIs, and secure key handling. In many projects, backend integration, indexing, and DevOps skills matter just as much as chain-specific knowledge. Product understanding is important too, because the technical design depends on the business process.
A Blockchain proof of concept may only need one experienced specialist, but production systems need broader coverage. Security review, contract logic, infrastructure, and integration should all be checked by someone who has shipped real systems before. The more valuable the assets or records, the more careful the review should be.
Yes, Blockchain work is often well suited to remote collaboration because the code, network design, and review process are digital. In Germany, teams often combine remote delivery with short on-site sessions for workshops, stakeholder alignment, or launch planning. Clear documentation and structured review calls help the work move smoothly.
Look for clear explanations, secure design choices, and evidence of shipping real Blockchain systems. Good specialists can explain trade-offs, write tests, and describe how they would handle keys, upgrades, and failure cases. If they only talk about buzzwords and cannot describe operational details, that is a warning sign.
Many Blockchain projects fail by choosing the chain before defining the problem. Other mistakes include weak contract testing, poor key management, and unclear rules for access or upgrades. A strong specialist will challenge these gaps early and keep the design focused on the real workflow.
The average hourly rate of freelancers in Germany who have used Blockchain in their recent projects is 111 €, which corresponds to a daily rate of about 887 € based on an 8-hour working day.
Of the freelancers in Germany who have used Blockchain in their recent projects, 97% hold at least a Bachelor's degree, 67% hold at least a Master's degree, and 9% hold a doctorate.
On average, freelancers in Germany who have used Blockchain in their recent projects have 18 years of professional experience, with a single engagement typically lasting around 2.6 years.
The most common languages among freelancers in Germany who have used Blockchain in their recent projects are German (98%), English (95%), and Spanish (20%).
The most common industries among freelancers in Germany who have used Blockchain in their recent projects are Information Technology (95%), Banking and Finance (60%), and Professional Services (48%).
The most common business areas among freelancers in Germany who have used Blockchain in their recent projects are Information Technology (89%), Product Development (87%), and Project Management (71%).
Main locations of FRATCH Experts, who have recently used Blockchain
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 Request a free demo
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Philipp Thomaschewski
FRATCH CEO
