Smart Contract Experts in Germany
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Meet FRATCH Experts in Germany, who have recently used Smart Contract
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.
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
Thomas Übermeier
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.
Louis Guitton
Last position:
Freelance Solutions Architect and Machine Learning Engineer at Self-employed
- Develop and demonstrate solutions using GenAI software like langchain, vercel ai sdk, copilotkit
- Work with customers to understand their challenges and provide the best solutions based on open-source data products
- Build RAG and GraphRAG solutions using Neo4j, lancedb, and Postgres
- Deploy a LLMOps platform using kubernetes, terraform, helmfile, Arize phoenix, mlflow
- Architect and build data pipelines using dbt, Trino, Spark, Iceberg, Airflow, ArgoCD, terraform, kubernetes
- Delivered user-centred technical strategy for Agriculture 4.0 and precision livestock farming, helping my client secure funding from Bpifrance
- Delivered a prospecting tool for a leading French solar carport installer, using geospatial computing (GIS), speeding up the sales process
- Built digital twin architecture for solar carports and EV chargers, making real-time monitoring and smart charging possible
Thomas Kevers
Last position:
Advisor to Chief Operations Officer at P2P.org
- Designed and implemented KPI/OKR frameworks ensuring predictable execution and leadership visibility
- Enabled repeatable performance tracking and structured quarterly cycles
Christian Schmitt
Last position:
Operation Manager at Xerof
- Working within a Swiss-regulated Virtual Asset Service Provider (VASP) offering institutional-grade crypto-fiat financial solutions
- Contributed to on-/off-ramp infrastructure enabling clients to convert between cryptocurrencies and fiat currencies
- Supported the rollout of Web3 payments & third-party payment services to streamline crypto operations for businesses
- Engaged with AML/KYC / regulatory compliance to ensure operations met Swiss regulatory standards
- Assisted in product development or deployment for crypto-backed real estate / luxury goods transactions
- Collaborated with institutional and high-net-worth clients to tailor crypto / financial services offerings
- Bridged traditional banking and Web3 by reducing frictions in fiat-crypto transactions
Seyed Farhad Miri
Last position:
Senior Product Security Engineer at Delivery Hero
- Developed a custom tool using the Mistral 7B LLM to scan, validate and report security vulnerabilities.
- Security tested AI agents, bots, and other LLMs with a focus on prompt injection, model inversion, data poisoning, EDR/AV bypass and evasion techniques, membership inference, model evasion, overfitting to malicious inputs and contextual manipulation.
- Onboarded repositories to SAST solutions for security scanning, implemented secrets scanning, DAST, SCA, and utilized ZAP for DAST in CI/CD pipelines.
- Engaged in security awareness trainings, developed CTF challenges and training materials to enhance developer security knowledge.
- Planned and executed bi-annual red teaming operations based on the MITRE ATT&CK framework and led internal and external pentests based on the OWASP Top 10 framework for 70+ applications worldwide, resulting in detection, reporting, and remediation of hundreds of vulnerabilities.
- Triaged HackerOne reports.
Özgür Tükenmez
Last position:
Management Consultant – Interim Manager at Self-employed Management Consultant – Interim Manager
- Managing ongoing bookkeeping – DATEV, ODOO, SAP FI
- Abacus/Davinci
- Support in preparing annual financial statements – HGB
- BPMN 2.0
- Modeling and automating business processes – RPA & BPMN
- Blockchain
- Advising on the implementation of artificial intelligence in accounting – Hypatos
- Data modeling and creating interactive dashboards – MS Power BI
- CAD
- Building and monetizing websites – current project Instagram @finanzabflug
- Canva
- Dapps
- Datev
Alexander Hauser
Last position:
Test Manager at FNZ Bank SE
- Creating a test concept and test strategy
- Planning and organizing user acceptance tests
- Coordinating test execution with business units during releases
- Guiding and coaching business units in writing user stories with acceptance criteria in Gherkin format
- Conducting training on test case creation
- Generating test reports and managing approvals/releases
- Setting up the test approach in Zephyr and Xray
- Planning and coordinating automated tests and regression tests
- Technologies and tools: Jira, Confluence, Zephyr for Jira, Xray, Microsoft Teams, ServiceNow
Marc Haid
Last position:
Senior Architect, Coach and Developer
Fixing issues in the application logic
Covering the changes with component tests
Analyzing and documenting the data structure of the different applications
Analyzing and documenting the parameters for configuring the applications
Analyzing and documenting the necessary measures to ensure the operation of the applications
Analyzing and designing the separation of the individual database structures
Analyzing and estimating the effort for planned enhancements
Analysis, maintenance and documentation of a heterogeneous legacy system landscape for a print media service provider
Technology: C#, VB.NET, C, Python, Microsoft SQL Server, Visual Studio 2010, JetBrains Rider, Visual Studio Code, arc42, Draw.io, Jira, GitLab
Björn Kowarsch
Last position:
Product Owner at ING Retail Bank
Organizational and technical process development and design of the digitization and online use of bank mandates. Responsible for accurately capturing requirements in Epics and User Stories, including backlog management, MVP, implementation support, and end-to-end testing of the implementation according to the SAFe Agile Framework methodology, creating process and interface documentation, and sprint demos. Established a knowledge management system based on Confluence and SharePoint, including employee training and workshops.
Nikita Nitichevski
Last position:
Senior Front-End Engineer at Hantverkshjälpen Sverige AB
- Code & project cleanup to accommodate multiple developers
- Implemented project linting (ESLint, Prettier, Husky Hooks)
- Refactored application routing and authentication logic (ReactJS, Next.JS, Recoil)
- Implementing vital UI ideas as standalone features into an administration dashboard (ReactJS, Tailwind CSS, Next.JS, TypeScript)
Tassilo Boßmann
Last position:
Scrum Master & Agile Coach at CARIAD
- Facilitated all core Scrum and SAFe events to ensure alignment
- Coached the team in applying agile methods to enhance collaboration and achieve sprint goals
- Supported the Product Owner in prioritization and conflict resolution to maximize value
Quentin Leopold
Last position:
Mobile Wallet/Payments Product & Partner Manager at Samsung Electronics GmbH
- Mobile Wallet/Mobile Pay
- Issuer & non payment product & partner manager
- Strategic alignment for Samsung Wallet for the future
Hai Dang
Last position:
Principal System Architect & Tech Lead at IU International University of Applied Sciences
Leading architecture and delivery of AI-powered educational content platform, managing two development teams with full technical ownership.
Designed and architected the Content Hub platform replacing legacy SiteFusion systems, enabling professors to create AI-assisted learning materials for improved student outcomes.
Established technical strategy, defined architecture requirements, and aligned two cross-functional teams (AI Media Team, TEAQ Team) on a unified delivery roadmap.
Implemented Clean Architecture principles and AI-agent-friendly documentation standards across the engineering organization.
Drove adoption of modern development workflows including CI/CD automation and MongoDB-based content management solutions.
Discover over 15,000 top freelancers
Statistics of experts using Smart Contract
Aggregated from the professional profiles of matched freelancers.
Experience
17 years
Position duration
2.3 years
Positions per freelancer
12
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Banking and Finance, Education
Certification focus areas
Information Technology, Business Intelligence, Project Management
Bachelor's degree or higher
95%
Master's degree or higher
48%
Certifications per freelancer
3
Most common languages
German, English, 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 Smart Contract
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 they do
Smart contracts are self-executing programs that run on blockchains such as Ethereum and other EVM networks. They are used for token logic, escrow, governance, DeFi protocols, NFTs, and automated settlement where trust needs to come from code, not manual steps.
Common stacks
- Solidity for EVM-based systems
- Hardhat or Foundry for testing and deployment
- OpenZeppelin libraries for standard patterns
- Web3 integration for front-end and backend flows
- Audit tools and static analysis for risk checks
When to bring in specialists
Companies bring in freelance specialists when a contract must be written cleanly, reviewed before launch, or adapted after a protocol change. They are also useful when an internal team needs outside help with token mechanics, upgrade patterns, gas optimization, or integration with wallets and chain data.
What strong experts deliver
Strong professionals think about more than syntax. They design safe state changes, predictable permissions, and clear upgrade paths. They also write tests that cover edge cases, review attack surfaces, and explain trade-offs in plain language.
Germany projects
In Germany, these experts often support fintech, industrial projects, digital assets, and internal innovation teams that need blockchain features without a full-time hire. Remote work is common, but on-site sessions in Germany can help with workshops, security reviews, and stakeholder alignment.
Why quality matters
A weak contract can lock funds, break token rules, or create a security hole that is hard to fix. Good work is easy to test, easy to review, and built with clear documentation, known libraries, and a deployment process the team can repeat.
Frequently asked questions
Questions about Smart Contract? Start with the answers below.
Smart contracts are used to automate rules on a blockchain. Companies use them for token transfers, vesting, staking, escrow, DAO voting, NFT minting, and DeFi workflows. The key benefit is that the logic executes the same way every time once it is deployed.
Smart contracts on Ethereum and other EVM chains are most often written in Solidity, but that is not the only option. The best choice depends on the chain, the security requirements, and the surrounding tooling. For Solana or other ecosystems, the language and framework can be very different.
Smart contracts are good when logic must live on-chain and be verifiable by all participants. Traditional backend systems are better for private data, fast iteration, and changes that should not require a new deployment to a blockchain. Many products need both, with the contract handling trust-sensitive rules and the backend handling off-chain services.
A strong smart contract specialist usually knows security review basics, blockchain data flows, and wallet integration. They should also understand testing, deployment scripts, ABI handling, and how front-end or backend code interacts with on-chain state. For production work, audit awareness matters as much as writing code.
A small proof of concept can sometimes be handled by a single focused smart contract specialist. Public launches, token systems, and anything that moves value usually need deeper review, test coverage, and a second set of eyes. If funds, permissions, or upgrades are involved, security experience becomes essential.
For most smart contract projects, remote collaboration works well because the work is code, tests, and reviews. Choosing someone in Germany can help when your team wants overlap in working hours, workshops, or easier in-person sessions. The better question is usually language fit, chain experience, and security depth.
A good smart contract professional can explain design choices, show tested code, and discuss failure cases without hiding behind jargon. Look for examples of audits, test suites, deployment discipline, and a clear answer on how they would handle upgrades or incidents. If they cannot describe attack vectors, that is a warning sign.
Smart contracts is the broad term for on-chain programs that enforce rules automatically. Ethereum contracts usually means the same idea on the Ethereum network or another EVM chain, while Solidity is the language often used to write them. In searches, people may use all three terms when they want the same kind of specialist.
The average hourly rate of freelancers in Germany who have used Smart Contracts in their recent projects is 110 €, which corresponds to a daily rate of about 880 € based on an 8-hour working day.
Of the freelancers in Germany who have used Smart Contracts in their recent projects, 95% hold at least a Bachelor's degree and 48% hold at least a Master's degree.
On average, freelancers in Germany who have used Smart Contracts in their recent projects have 17 years of professional experience, with a single engagement typically lasting around 2.3 years.
The most common languages among freelancers in Germany who have used Smart Contracts in their recent projects are German (100%), English (100%), and French (17%).
The most common industries among freelancers in Germany who have used Smart Contracts in their recent projects are Information Technology (100%), Banking and Finance (61%), and Education (43%).
The most common business areas among freelancers in Germany who have used Smart Contracts in their recent projects are Information Technology (96%), Product Development (87%), and Quality Assurance (74%).
Main locations of FRATCH Experts, who have recently used Smart Contract
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 
Berlin Request a free demo
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Philipp Thomaschewski
FRATCH CEO
