Hire Freelance Bitcoin Developers
Mike Fisher
Mike is passionate about creating great software that meets real business needs. He has extensive industry experience ranging from tiny startups to software giants like Microsoft. Mike understands the importance of planning, prioritizing, staying on schedule, and staying within budget. Almost no challenge is too difficult when it comes to his technical ability and problem-solving skills. Mike is a self-starter and will communicate effectively with the rest of your team.
Show MoreWesley Smith
Wesley likes writing code that people use and actually gets shipped to market--so this is why he cares about customer feedback, deadlines, and project vision. Most recently, Wesley has been working on smart contracts for Ethereum and Bitcoin and building SasS products that integrate with distributed ledger technology.
Show MoreJohn McLaughlin
John is an experienced Ethereum dApp developer. He has created NFT factories and marketplaces on Ethereum Mainnet and L2 chains like Polygon, Arbitrum, Optimism, and zkSync for five Toptal clients. He has designed and deployed 150 unique Solidity smart contracts (ERC-20, ERC-721, ERC-1155) integrated into various decentralized platforms and applications. As an AWS Certified Developer Associate, John has also developed and deployed serverless applications for Toptal and other freelance clients.
Show MoreCleivson Siqueira De Arruda
Cleivson is a senior back-end engineer with a decade of experience working with agile development and solving business problems by diving deep into the user's requirements. While working at Amazon, he was able to develop and maintain systems with a high load (millions, sometimes billions of requests per day) in a highly scalable and highly available environment. Cleivson specializes in C#, Java, and TypeScript languages and can rapidly ramp up any other technology.
Show MoreFabrice Triboix
Fabrice is a DevOps engineer with eight years of experience with AWS and six years with both Kubernetes and Terraform. He is very keen on automation (CI/CD, infrastructure as code) and solving complex problems with simple solutions. He worked for clients such as NatWest Bank, Cisco, Topps, the UK Home Office, medium-sized companies, and many startups. His greatest joy is to see his work actually being used in production and making a positive impact on his clients' businesses.
Show MoreStJohn Piano
StJohn is a highly-skilled and motivated senior software engineer with 11+ years of experience, 8+ of which have been in the blockchain industry. He currently works as the head of engineering at Solidi Cryptocurrency Exchange. StJohn has built excellent software for a fully regulated UK cryptocurrency exchange, a blockchain-based web publishing system, a secure Bitcoin storage toolset, a speech recognition company, a transcription team, and a furniture factory.
Show MoreJaak Vlasveld
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.
Show MoreOleksii Asiutin
Oleksii is now working as a DevOps engineer—automating infrastructure management and creating CI/CD pipelines. He has hands-on experience writing server daemons (Node.js, Golang). Previously, he's worked as a full-stack web developer mainly coding with PHP, Python, and so on. As a hobby, Oleksii writes DevOps digests for the Ukrainian Software Developer Community and helps people who have a passion for software programming.
Show MoreAminadav Glickshtein
Aminadav has 15+ years of professional experience and started coding at the age of seven, making programming like a native language for him. As a full-stack and blockchain architect, developer, and consultant, he has in-depth knowledge of many areas and possesses the ability to code quickly and efficiently. During the past ten years, his primary focus has been on full-stack development. StackOverflow rated him at the top 1% of developers.
Show MoreDenis Baturin
Denis is a blockchain analyst and a Solidity and Android developer. He has been in charge of everything blockchain-related in a hardware wallet company for over two years. He has integrated 10+ blockchains for a hardware wallet Android app in Kotlin and Java and developed a self-sovereign identity (SSI) POC app. Denis is experienced with smart contracts and NFTs and has a solid background as a system administrator and tech support.
Show MoreSeva Safris
Seva is a software professional with 24 years of development experience. He graduated from UC Berkeley with degrees in electrical engineering and computer science, and a minor in material science and engineering. Seva is a team lead, project manager, mentor, solution architect, and hands-on developer who builds efficient, scalable, and fault-tolerant solutions for enterprise companies and startups.
Show MoreDiscover More Bitcoin Developers in the Toptal Network
Start Hiring




















