Smart Contract Experts in Berlin
matched in minutes from over 15,000 CVs with vetted freelancers and the power of AIHire experts who design, review, and deploy smart contracts for Ethereum, Solidity, and EVM-based systems, handle testing and audits, and support DeFi, token, and workflow automation projects with fast, precise matching to vetted, available freelancers.
Meet FRATCH Experts in Berlin, who have recently used Smart Contract
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
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.
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.
Suvrajit Saha
Last position:
Advisor Go-2-Market at Chariot Command Corp.
- Scenario Analysis
- Recommendations
- Disclosures
- Governance
- Market Segmentation
- Go-to-Market Strategy for farm machinery maintenance software
- Cyber Physical Systems
- Additive
Sanju Barla
Last position:
Portfolio for Content Management System (Flask, SQLAlchemy, Bootstrap)
- Created a CMS-driven portfolio app for showcasing projects with user authentication, CRUD operations, and Guest Mode.
- Designed and implemented full-stack architecture using Flask, SQLAlchemy, and Bootstrap 5.
- Integrated secure authentication and CSRF protection mechanisms.
- Deployed production-ready web app using Docker and Railway.
- Achieved full project cycle completion: design, development, testing, deployment, and documentation.
- Demonstrated Agile development principles and industry-standard software engineering practices.
Baki Berkay Uzel
Last position:
IT Internship at Perfektup Packaging
- Gained hands-on exposure to Oracle Fusion Cloud ERP, experimenting with its core features and configurations.
- Conducted strategic research on Manufacturing Execution Systems (MES) integration, analyzing vendor proposals and market reports to support the company’s digital transformation roadmap.
- Participated in IT-team meetings on ERP requirements, cross-department coordination, and IT governance practices.
Discover over 15,000 top freelancers
Statistics of experts using Smart Contract
Aggregated from the professional profiles of matched freelancers.
Experience
12 years
Position duration
2.4 years
Positions per freelancer
7
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Education, Banking and Finance
Certification focus areas
Information Technology, Business Intelligence, Research and Development
Bachelor's degree or higher
100%
Master's degree or higher
71%
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 Berlin 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 Berlin 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
Smart contract basics
Smart contracts are self-executing programs that run on blockchains and enforce agreed rules without manual approval. They are used for token logic, payments, access control, escrow, and automation where trust and traceability matter.
Where they are used
- Token issuance and transfer rules
- DeFi protocols, staking, and liquidity logic
- NFT minting, royalties, and permissions
- Escrow, settlement, and automated workflows
- On-chain governance and treasury controls
Tooling and stacks
Most projects center on Solidity and the Ethereum ecosystem, often with EVM-compatible chains. Strong specialists work with Hardhat or Foundry, test suites, security checks, and deployment scripts. They also read gas costs carefully and know how contracts interact with wallets, indexers, and off-chain services.
When teams bring in specialists
Companies usually need freelance expertise when a launch depends on clean contract design, an inherited codebase needs review, or a protocol change must be shipped safely. Berlin teams often use remote specialists for focused delivery, while some workshops, reviews, and release support fit on-site collaboration well.
What strong experts deliver
A good specialist writes clear, upgrade-aware code and documents contract behavior in plain language. They think in attack paths, failure cases, and test coverage, not just features. They also coordinate with product, backend, and security teams so the on-chain logic matches the real business process.
Quality signals
Look for practical proof, not broad claims.
- Clear examples of shipped contract systems
- Testing discipline and security review habits
- Familiarity with audits, proxies, and permissions
- Ability to explain trade-offs in simple terms
- Experience with production incidents and fixes
Frequently asked questions
What clients ask us most about Smart Contract — answered in short.
Smart contracts are used to automate on-chain rules that should run exactly as written. Common cases include token transfers, DeFi actions, NFT minting, escrow, governance, and controlled access to digital assets. They are a fit when you need transparent logic that users and other systems can verify.
Smart contracts are the general concept; Solidity is one of the main languages used to write them on Ethereum and EVM chains. Teams often use the term when they actually mean Ethereum contracts built in Solidity. The right freelancer should understand both the language and the chain behavior around it.
Smart contracts run in a shared blockchain environment, so they must be deterministic, transparent, and carefully constrained. Traditional backend services are easier to change and usually cheaper to run, but they do not provide the same trust model. Many products use both: on-chain logic for critical rules and off-chain services for everything else.
A strong smart contracts specialist usually also knows Solidity, EVM basics, testing tools like Hardhat or Foundry, and security review practices. Depending on the project, knowledge of token standards, wallet flows, indexing, and backend integration matters too. For DeFi or NFT work, prior protocol experience is a real advantage.
A simple contract change or token adjustment may only need focused specialist support, while a new protocol or launch needs broader design and review skills. Smart contracts are unforgiving, so even small tasks benefit from someone who has worked on production systems before. The more funds, permissions, or upgrades are involved, the more important proven delivery becomes.
Many smart contracts tasks work well remotely because the work is code, tests, and review. On-site sessions in Berlin can help when teams need architecture workshops, incident analysis, or close coordination with product and legal stakeholders. The best setup depends on how much discussion the project needs versus hands-on implementation.
Ask for examples of shipped smart contracts work, not just general blockchain interest. Look for clean test coverage, careful handling of access control and upgrade patterns, and clear explanations of risk. Good specialists can describe what can fail, how they tested it, and why their design choices are safe.
Freelancers working with smart contracts should expect tight review cycles, strong attention to detail, and a need to document decisions clearly. Teams may ask for contract design, implementation, test writing, audit support, or post-deployment fixes. In Berlin projects, English is common, but local coordination can help when stakeholders are based there.
The average hourly rate of freelancers in Berlin, Germany who have used Smart Contracts in their recent projects is 107 €, which corresponds to a daily rate of about 853 € based on an 8-hour working day.
Of the freelancers in Berlin, Germany who have used Smart Contracts in their recent projects, 100% hold at least a Bachelor's degree and 71% hold at least a Master's degree.
On average, freelancers in Berlin, Germany who have used Smart Contracts in their recent projects have 12 years of professional experience, with a single engagement typically lasting around 2.4 years.
The most common languages among freelancers in Berlin, Germany who have used Smart Contracts in their recent projects are German (100%), English (100%), and French (29%).
The most common industries among freelancers in Berlin, Germany who have used Smart Contracts in their recent projects are Information Technology (100%), Education (57%), and Banking and Finance (57%).
The most common business areas among freelancers in Berlin, Germany who have used Smart Contracts in their recent projects are Information Technology (100%), Product Development (86%), and Quality Assurance (86%).
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.
Countries:
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
