Data Engineer (Middle+/Senior)
Status
London, UK
Full time
Remote
2,500
-
4,166.67
Monthly
30,000
-
50,000
Annual
Payment in Crypto
Role
Data Engineer
Work Experience
More than 3 years
Description
Are you passionate about blockchain technology and working with data? Do you enjoy taking ideas from early-stage concepts through to useful insights? If so, this could be a fantastic opportunity to be a hands-on engineer shaping the future blockchain data analysis! Now more than ever, we need a team of diverse, passionate and hungry individuals to drive our group vision forward, one block at a time. We need people like YOU, to be a part of our on-chain analysis revolution! As a Data Engineer you will be closely collaborating with both business and backend to design and implement an efficient way of data processing. You will be working in our back end team and will have plenty of opportunities to improve your skills and grow professionally.
Responsibilities: You'll be working on the pipeline of our core product.
This includes:
— Designing and developing blockchain data processing pipelines for new charts, including development and optimizing of the data architecture; — Integrating developments into existing solutions; — Development and maintenance of infrastructure required for optimal extraction, transformation and loading of data from various sources; — Participating in grooming solutions for data processing, ETL/ELT processes and automation of data processing workflows, including coordination with backend developers, DS, DA and QA engineers; — Data validation: counting historical data with BlockSci, automating data validation.
Requirements: — 3+ years of work experience; — Solid knowledge of Python and SQL; — Experience working with Databases (e.g. PostgreSQL, Vertica); — Knowledge of ETL tools (e.g. Spark, Airflow).
Nice to have:
— Experience within the cryptocurrency industry; — Experience with CI / CD (Gitlab CI, Docker, K8s); — Experience with administration of AWS.
Benefits:
— Competitive salary; — Ability to work from our offices in London, or fully remote; — Flexible workday - you choose when you work; — 30 days holiday allowance per year; — Monthly contribution towards your gym membership; — $500 per year towards a personal development fund.
Skills Required
Whalemap
Website
whalemap.ioCompany size
Not specified
Location
United Kingdom
Description
Not specified
Status
Jiraporn Eksamut
Smart Contract Developer
Part time
Remote
About the Role:
We’re looking for an experienced Smart Contract Developer to join our remote team. You’ll be responsible for designing, developing, and deploying secure and efficient smart contracts for blockchain-based applications. The role involves close collaboration with other developers and product leads to bring new ideas to life.
Key Responsibilities:
- Design, write, and test smart contracts (Solidity)
- Review and optimize existing contracts for gas efficiency and security
- Integrate contracts with front-end or backend services via Web3
- Participate in code reviews, audits, and documentation
- Stay current with blockchain trends and best practices
Requirements:
- Proven experience with Solidity, EVM-based blockchains, and related frameworks (Hardhat, Truffle, Foundry, etc.)
- Good understanding of DeFi protocols, NFT standards (ERC-721/1155), or Layer-2 solutions
- Familiarity with smart contract security and testing methodologies
- Experience using GitLab, Git, and version control workflows
- Ability to work independently and communicate effectively in English
Nice to Have:
- Background in cryptography, auditing, or backend development
- Contributions to open-source blockchain projects
What We Offer:
- Fully remote and flexible working hours (team across EST, CET, GMT+2)
- Flexible payment options — including crypto payments (USDT, USDC) or traditional methods
- Collaborative and friendly international team
- Opportunities to grow into lead or architecture roles
We’re looking for an experienced Smart Contract Developer to join our remote team. You’ll be responsible for designing, developing, and deploying secure and efficient smart contracts for blockchain-based applications. The role involves close collaboration with other developers and product leads to bring new ideas to life.
Key Responsibilities:
- Design, write, and test smart contracts (Solidity)
- Review and optimize existing contracts for gas efficiency and security
- Integrate contracts with front-end or backend services via Web3
- Participate in code reviews, audits, and documentation
- Stay current with blockchain trends and best practices
Requirements:
- Proven experience with Solidity, EVM-based blockchains, and related frameworks (Hardhat, Truffle, Foundry, etc.)
- Good understanding of DeFi protocols, NFT standards (ERC-721/1155), or Layer-2 solutions
- Familiarity with smart contract security and testing methodologies
- Experience using GitLab, Git, and version control workflows
- Ability to work independently and communicate effectively in English
Nice to Have:
- Background in cryptography, auditing, or backend development
- Contributions to open-source blockchain projects
What We Offer:
- Fully remote and flexible working hours (team across EST, CET, GMT+2)
- Flexible payment options — including crypto payments (USDT, USDC) or traditional methods
- Collaborative and friendly international team
- Opportunities to grow into lead or architecture roles
Rebecca Hannold
Senior Software Developer
Remote, USA
Remote, USA
Full time
Remote
BitPay, Inc., founded in 2011, is the world’s leading blockchain (cryptocurrency) payments company. We serve top merchants across six continents, providing a seamless and secure cryptocurrency payments experience. BitPay builds powerful tools to accept, store, and spend cryptocurrency safely and efficiently.
We’re looking for a Senior Backend Software Developer to join our remote US-based team and help craft the next generation of innovative products. If you thrive on solving complex problems, building scalable systems, and staying ahead of technology trends, this role is for you.
What You’ll Do:
Develop scalable and maintainable backend systems using Node.js and MongoDB
Collaborate with cross-functional teams to build features for customers and internal tools
Ensure high code quality through unit, integration, and functional testing, code reviews, and thorough documentation
Address challenges in scalability, reliability, and logging during development
Mentor and guide other developers, fostering growth and knowledge-sharing
Stay up-to-date with emerging technologies to keep our team innovative and competitive
What We’re Looking For:
5+ years of professional backend development experience
Expert in Node.js and MongoDB
Proven experience delivering production-ready APIs
Strong desire for continuous learning and process improvement
Track record of delivering high-quality software in professional environments
Passion for your craft, drive for progress, and commitment to excellence
Portfolio showcasing your work (e.g., GitHub)
Blockchain or fintech development experience
Highly Preferred: blockchain or fintech development experience
Bachelor’s degree in Computer Science or equivalent experience with notable projects
What We Offer:
Collaborate with a team of intelligent, enthusiastic individuals.
Thrive in a rapidly expanding crypto company with global reach, where your contributions make a tangible impact.
Work remote with a generous vacation policy, including the opportunity to take a sabbatical and select your own holidays.
Access to continuous learning and development opportunities, supported by professional development reimbursement.
Competitive salary package with comprehensive benefits, including fully covered medical and dental plans. We also offer telemedicine, life insurance, disability insurance, vision coverage, 401k, travel assistance, and more.
Option to receive payment in cryptocurrency, along with a crypto match program.
Stock option awards available to all employees.
Home office allowance, reimbursement for internet/cell expenses, complimentary Amazon Prime and Spotify subscriptions.
BitPay is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.
If interested, please apply here: https://bitpay.applytojob.com/apply/jobs/details/4eZJqEucfX
We’re looking for a Senior Backend Software Developer to join our remote US-based team and help craft the next generation of innovative products. If you thrive on solving complex problems, building scalable systems, and staying ahead of technology trends, this role is for you.
What You’ll Do:
Develop scalable and maintainable backend systems using Node.js and MongoDB
Collaborate with cross-functional teams to build features for customers and internal tools
Ensure high code quality through unit, integration, and functional testing, code reviews, and thorough documentation
Address challenges in scalability, reliability, and logging during development
Mentor and guide other developers, fostering growth and knowledge-sharing
Stay up-to-date with emerging technologies to keep our team innovative and competitive
What We’re Looking For:
5+ years of professional backend development experience
Expert in Node.js and MongoDB
Proven experience delivering production-ready APIs
Strong desire for continuous learning and process improvement
Track record of delivering high-quality software in professional environments
Passion for your craft, drive for progress, and commitment to excellence
Portfolio showcasing your work (e.g., GitHub)
Blockchain or fintech development experience
Highly Preferred: blockchain or fintech development experience
Bachelor’s degree in Computer Science or equivalent experience with notable projects
What We Offer:
Collaborate with a team of intelligent, enthusiastic individuals.
Thrive in a rapidly expanding crypto company with global reach, where your contributions make a tangible impact.
Work remote with a generous vacation policy, including the opportunity to take a sabbatical and select your own holidays.
Access to continuous learning and development opportunities, supported by professional development reimbursement.
Competitive salary package with comprehensive benefits, including fully covered medical and dental plans. We also offer telemedicine, life insurance, disability insurance, vision coverage, 401k, travel assistance, and more.
Option to receive payment in cryptocurrency, along with a crypto match program.
Stock option awards available to all employees.
Home office allowance, reimbursement for internet/cell expenses, complimentary Amazon Prime and Spotify subscriptions.
BitPay is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.
If interested, please apply here: https://bitpay.applytojob.com/apply/jobs/details/4eZJqEucfX
Ali Ahmad
Graphic Designer for Web & Mobile Projects
Part time
Remote
We are lookang for a talented and creative graphic designer to work on various digital design project including web banners social medai posts product mockups and UI/UX layouts
Payment in Crypto
Caroline Fox
Senior Web3 Frontend Engineer
Buenos Aires, Argentina +3
Buenos Aires, Argentina +3
Full time
Remote
About Dredsoft LabsAt Dredsoft Labs, we are building the next generation of decentralized applications and digital ecosystems. Our mission is to bridge innovative Web3 technologies with real-world usability—empowering users, creators, and businesses through transparent, secure, and scalable blockchain solutions.We’re a team of passionate engineers, designers, and thinkers shaping the future of decentralized technology. If you thrive at the intersection of blockchain, design, and user experience, Dredsoft Labs is the place for you.We are seeking a Web3 Frontend Engineer to design, develop, and maintain cutting-edge decentralized applications (dApps) and user interfaces that interact with blockchain networks. You’ll collaborate closely with blockchain developers, product designers, and backend engineers to deliver seamless, secure, and scalable user experiences in the Web3 ecosystem.Key ResponsibilitiesDevelop responsive, performant, and intuitive user interfaces for dApps and Web3 platforms.Integrate blockchain functionality using libraries such as ethers.js, web3.js, or wagmi.Collaborate with smart contract developers to build and test on-chain/off-chain interactions.Implement wallet connections (e.g., MetaMask, WalletConnect, Coinbase Wallet).Work with modern frontend frameworks such as React, Next.js, or Vue.js.Ensure high-quality code through unit testing, code reviews, and continuous integration.Optimize UI/UX for blockchain-specific challenges like transaction feedback, gas estimation, and asynchronous confirmations.Stay current with Web3 trends, tooling, and emerging technologies in the blockchain ecosystem.Required QualificationsBachelor’s degree in Computer Science, Engineering, or related field (or equivalent experience).3+ years of professional experience in frontend development.Proficiency in JavaScript, TypeScript, React, and modern web technologies (HTML5, CSS3, REST APIs).Strong understanding of Ethereum, EVM-compatible chains, and blockchain fundamentals.Experience with ethers.js, web3.js, wagmi, or similar libraries.Familiarity with decentralized storage solutions (e.g., IPFS, Arweave).Experience integrating Web3 wallets and signing transactions.Soft SkillsStrong problem-solving and debugging skills.Passion for decentralized technologies and blockchain innovation.Excellent communication and collaboration skills.Ability to thrive in a fast-paced, evolving tech landscape.What We OfferCompetitive compensation (salary + token/equity options).Flexible remote work environment.Opportunity to work on high-impact blockchain projects.Access to developer conferences, learning stipends, and mentorship.
Payment in Crypto
Arsam Parsi
Freelance Project-Based Marketing Agent (Web Design Projects)
Part time
Remote
We are looking for freelance marketing agents to help us find international clients who already have web design projects and need professional website development services.
This is a commission-based, project-focused collaboration — not a traditional job offer. Your success depends entirely on finding clients with real projects.
🧩 About the Role
Your main responsibility is to secure the client’s willingness to assign a web design project.
after the client agrees, you will collect the project details (type of website, features, language, etc.) and forward them to our team.
Our team will then prepare the final quote, present it to the client, and close the deal.
💡 Key point: First, confirm that the client is ready to proceed with a web design project — gathering detailed project information comes after client agreement.
💰 Commission
Earn 10% of each confirmed project’s profit.
Payment is made after project approval.
100% remote — flexible schedule, fully performance-based income.
🧠 Requirements
Experience in marketing, lead generation, or online sales.
Good English communication skills (written or spoken).
Ability to identify real project opportunities and handle professional conversations online.
⚙️ Work Process
Find potential clients who have web design projects.
Secure their agreement to let us review the project.
Collect project details and send them to our team.
Our team prepares the quote, presents it to the client, and closes the deal.
Receive your 10% commission after project confirmation.
💬 Join us as a freelance, project-focused marketing agent and earn commissions by connecting international clients with ready web design projects to our professional team.
This is a commission-based, project-focused collaboration — not a traditional job offer. Your success depends entirely on finding clients with real projects.
🧩 About the Role
Your main responsibility is to secure the client’s willingness to assign a web design project.
after the client agrees, you will collect the project details (type of website, features, language, etc.) and forward them to our team.
Our team will then prepare the final quote, present it to the client, and close the deal.
💡 Key point: First, confirm that the client is ready to proceed with a web design project — gathering detailed project information comes after client agreement.
💰 Commission
Earn 10% of each confirmed project’s profit.
Payment is made after project approval.
100% remote — flexible schedule, fully performance-based income.
🧠 Requirements
Experience in marketing, lead generation, or online sales.
Good English communication skills (written or spoken).
Ability to identify real project opportunities and handle professional conversations online.
⚙️ Work Process
Find potential clients who have web design projects.
Secure their agreement to let us review the project.
Collect project details and send them to our team.
Our team prepares the quote, presents it to the client, and closes the deal.
Receive your 10% commission after project confirmation.
💬 Join us as a freelance, project-focused marketing agent and earn commissions by connecting international clients with ready web design projects to our professional team.
Payment in Crypto