Jaak Vlasveld
Verified Expert in Engineering
Bitcoin Developer
Arnhem, Netherlands
Toptal member since October 17, 2022
Jaak is a polyglot developer with infrastructure experience working on back-end systems and blockchain technology. He is formally educated in distributed systems engineering and has professional knowledge of developing core blockchain technology and crypto trading services. Jaak is well versed in C++, Go, Python, and other languages development and is used to working in Agile teams with cross-platform deployment, including with Docker, Kubernetes, and cloud environments, such as GCP and Proxmox.
Portfolio
Experience
- C++ - 8 years
- Linux - 7 years
- Git - 6 years
- Bitcoin - 5 years
- User Acceptance Testing (UAT) - 5 years
- Dash - 3 years
- Bitcoin Cash - 3 years
- Go - 2 years
Preferred Environment
Linux, Visual Studio Code (VS Code), C++, Go, Bitcoin, Bitcoin Cash, Dash
The most amazing...
...blockchain feature I've delivered is a consensus-validated system for secondary tokens and NFTs.
Work Experience
Developer
Self-employed
- Delivered the core technology for Oracle-based consensus-validated sports betting on the blockchain.
- Developed Traidz's crypto trading engine to enable it to trade reliably at seven exchanges while having access to 21, and contributed to the open source trading engine GoCryptoTrader.
- Managed stakeholder alignment for a medical data blockchain project in cooperation with Avisi.
Blockchain Developer
3RE
- Developed ATP, a consensus-validated secondary token based on Andrew Stone's group tokenization proposal for cryptocurrencies in the bitcoin family. Led the adoption of this token system with two POS coins.
- Launched a Dash-based cryptocurrency with permission masternodes and the ATP token protocol for a gaming entertainment ecosystem.
- Cultivated and maintained a consensus-validated sports betting chain, acting as developer, architect, team lead, and lead developer.
- Developed and contributed to the launch of two other cryptocurrencies.
- Specified an exchange API and contributed to the development of the exchange providing the API.
- Built and delivered a blockchain education program and training workshops to the Amsterdam University of Applied Sciences, the Utrecht University, and the Windesheim University of Applied Sciences.
Director
Green IT Amsterdam Region
- Established, managed, oversaw, and contributed to seven projects with over one million euros in budgets.
- Ensured the commitment of 70% of Amsterdam's data centers to sustainability goals.
- Managed piloting activities for integrating data centers as demand-response actors in smart energy grids.
- Led the communication and validation activities for developing the EU roadmap for sustainable smart neighborhoods.
- Provided expert input on strategies for sustainable software development.
- Led the knowledge-sharing activities for developing a certified learning program on energy-efficient data centers.
Consultant
Self-employed
- Evaluated the funding structure of national ICT infrastructures for research in the Netherlands.
- Contributed to initiating structural innovation activities on sustainable ICT in the Netherlands.
- Evaluated telecare systems and advised how to use video communication between health care providers and their clients, segmented per type of care.
Experience
Atomic Token Protocol for Bitcoin-based Coins
Blockchain-based Sports Betting
Robotraidr
I extended this platform to connect to new exchanges, automatically trade with a custom trading strategy (such as grid trading, arbitrage, accumulation, and distribution), generate reports and insights, and monitor trading activity on a cross-platform app.
Education
Master's Degree in Philosophy of Science, Technology and Society
The University of Twente - Enschede, Netherlands
Master's Degree in Telematics
The University of Twente - Enschede, Netherlands
Skills
Libraries/APIs
Protobuf, Standard Template Library (STL), OpenAPI, React
Tools
Git, CircleCI, Ragel, Travis CI, GitLab CI/CD, GitHub
Languages
C++, Go, Python, UML, JavaScript, Java, Dart, TypeScript
Platforms
Linux, Blockchain, Visual Studio Code (VS Code), Bitcoin Cash, Docker
Paradigms
User Acceptance Testing (UAT), Kanban, Unit Testing, Functional Testing, Scrum, DevOps, Agile
Storage
LevelDB, PostgreSQL, Redis, MongoDB
Industry Expertise
Marketing
Frameworks
Flutter, gRPC
Other
Bitcoin, Dash, Roadmaps, Functional Requirements, Communication Strategy, Communication, Innovation Management, Business Requirements, AsyncAPI, GitHub Actions, Regression Testing, IT Project Management, Project Planning, CI/CD Pipelines, Offshore Team Management, Business Strategy, Project Budget Management
How to Work with Toptal
Toptal matches you directly with global industry experts from our network in hours—not weeks or months.
Share your needs
Choose your talent
Start your risk-free talent trial
Top talent is in high demand.
Start hiring