Senior API Developer.
Full time
Remote
Compensation is not specified
Role
Backend Engineer
Description
About Openmesh and Xnode:
At present, a small number of corporations control 90% of the world's data and IT infrastructure, which puts trust in them as a disadvantage. This not only has negative effects on businesses, but also affects society as a whole. It leads to social inequality, scandals, polarization, corruption, and can even escalate into war. Centralized data control hampers innovation, raises privacy concerns, and obstructs the free flow of data.
Openmesh is a cutting-edge open-source cloud platform and a global open data network that aims to store significant global data without intermediaries. With coverage of approximately 80% of the current crypto and web3 ecosystem, Openmesh is the largest open web3 data lake. By 2024, our goal is to expand data coverage to include public health and scientific research data.
Openmesh enables anyone to create their own decentralized data cloud, globally connect, securely share data, reduce deployment costs, and automate data cloud setup. The Openmesh Network is a fabric of open data on the internet, ensuring universal access and preventing interference from regulators, governments, corporations, and even its own creators.
Core Products:
Our flagship product, Xnode, is a platform that revolutionizes the creation of decentralized data clouds. Xnode allows developers to build their own decentralized data clouds in minutes, rather than weeks or months. Developers only pay for computing and storage, avoiding licensing and setup fees. Xnode significantly reduces operating costs for data clouds and reduces deployment time by over 95%.
Pythia is an analytics and query engine that converts raw data into actionable insights. This powerful tool enables the design, visualization, deployment, and creation of complex data products.
Unified APIs provide a single entry point for all crypto and web3 data, allowing universal access without any costs or barriers.
Our vision:
Our vision is to democratize data and address information asymmetry on a large scale. Data and information are the most valuable commodities in the world, and without reliable data, the internet cannot function efficiently. We believe access to reliable and unedited information is a fundamental right in a free and democratic society. Openmesh is designed to have no single authority that can alter its data distribution or control. The entire infrastructure and technology stack are open-source, governed by a community.
About the Role:
As a Senior API Developer, you will be responsible for developing advanced API solutions for decentralized applications within the Xnode ecosystem. Your role will involve ensuring seamless integration and interoperability within the Unified API platform.
Your Impact:
- Lead the development of advanced API solutions, focusing on Unified APIs for decentralized applications within the Xnode ecosystem.
- Drive architectural innovations in API design to ensure efficiency, scalability, and seamless integration.
- Implement unified data connectivity solutions that enable decentralized applications to seamlessly interact with Xnode's open web3 data lake.
Qualifications:
- Bachelor's or Master's degree in Computer Science or a related field.
- Extensive experience in API development, with a focus on decentralized applications.
- Proficiency in programming languages such as Python, Node.js, or Go.
- Strong problem-solving and architectural design skills.
- Experience with blockchain technologies.
Why Join Us:
- Lead a revolutionary product that transforms the landscape of data management and accessibility.
- Collaborate within a global community of innovators and thought leaders in the decentralized space.
- Make a significant impact on how data is accessed and utilized worldwide, promoting transparency, efficiency, and democratization.
- Enjoy a dynamic, challenging, and rewarding work environment, along with competitive compensation and benefits.
How to Apply:
Interested candidates should submit a resume and a cover letter demonstrating their passion for decentralized technologies and their vision for Xnode's future.
Skills Required
Openmesh Network
Website
www.openmesh.networkCompany size
Not specified
Location
United States
Description
Not specified
Camila Russo
Blockchain Advisor/Expert
Full time
Remote
The Defiant is one of the most influential media platforms in Web3. We cover decentralization, DeFi, and blockchain like no one else. Our audience consists of crypto enthusiasts, investors, and builders shaping the future. We’re looking for a Blockchain Advisor/Expert to help our journalists dive deeper into trends, tech, and the dark corners of the crypto market.
Who You Are:
✅ You don’t just follow crypto—you live it. You trade, stake, farm, bridge, and interact with DeFi protocols daily. You understand MEV, smart contract risks, and the nuances of different L1/L2 ecosystems.
✅ You can break down complex concepts into digestible insights. Whether it’s explaining restaking, ZK-proofs, or the latest meme coin frenzy, you make it clear for both beginners and pros.
✅ You have a pulse on everything crypto. From regulatory shifts to the newest airdrops, you spot trends before they go mainstream.
✅ You can prove your expertise. We don’t work with self-proclaimed "gurus." Show us your wallets, on-chain activity, research threads, GitHub contributions, or anything that proves you’re a real player in this space.
What You’ll Do:
🔍 Guide our journalists on technical accuracy, emerging trends, and under-the-radar narratives.
📊 Provide real-time insights on market movements, protocol upgrades, and ecosystem shifts.
🎤 Occasionally contribute to podcasts, interviews, or deep-dive reports as a subject-matter expert.
🤝 Connect us with key players—founders, devs, and analysts—to elevate our reporting.
What We Offer:
🔥 A platform with massive reach—your insights will shape how millions perceive crypto.
🔥 Exclusive access to industry leaders, events, and alpha.
🔥 Flexible engagement—remote, part-time, or full-time. We’re open to discussion.
🔥 Payment in crypto (USDC, ETH, BTC) if you prefer.
Non-Negotiable Requirement:
🔒 You must provide verifiable proof of your crypto activity. No exceptions. We need real experts, not armchair analysts.
Ready to shape the future of crypto media? Send your application with proof of your expertise—let’s build the definitive voice of Web3 together. 🚀
Who You Are:
✅ You don’t just follow crypto—you live it. You trade, stake, farm, bridge, and interact with DeFi protocols daily. You understand MEV, smart contract risks, and the nuances of different L1/L2 ecosystems.
✅ You can break down complex concepts into digestible insights. Whether it’s explaining restaking, ZK-proofs, or the latest meme coin frenzy, you make it clear for both beginners and pros.
✅ You have a pulse on everything crypto. From regulatory shifts to the newest airdrops, you spot trends before they go mainstream.
✅ You can prove your expertise. We don’t work with self-proclaimed "gurus." Show us your wallets, on-chain activity, research threads, GitHub contributions, or anything that proves you’re a real player in this space.
What You’ll Do:
🔍 Guide our journalists on technical accuracy, emerging trends, and under-the-radar narratives.
📊 Provide real-time insights on market movements, protocol upgrades, and ecosystem shifts.
🎤 Occasionally contribute to podcasts, interviews, or deep-dive reports as a subject-matter expert.
🤝 Connect us with key players—founders, devs, and analysts—to elevate our reporting.
What We Offer:
🔥 A platform with massive reach—your insights will shape how millions perceive crypto.
🔥 Exclusive access to industry leaders, events, and alpha.
🔥 Flexible engagement—remote, part-time, or full-time. We’re open to discussion.
🔥 Payment in crypto (USDC, ETH, BTC) if you prefer.
Non-Negotiable Requirement:
🔒 You must provide verifiable proof of your crypto activity. No exceptions. We need real experts, not armchair analysts.
Ready to shape the future of crypto media? Send your application with proof of your expertise—let’s build the definitive voice of Web3 together. 🚀
Payment in Crypto
Camila Russo
Crypto-Native Social Media Manager
Full time
Remote
The Defiant is the rebellious voice of Web3. We don’t just report on crypto—we shape the narratives that drive decentralization forward. Our social media isn’t about bland updates; it’s about sparking debates, breaking news before it’s news, and making sure the industry listens.
Is this you?
✅ You breathe crypto 24/7 – You track Vitalik’s tweets, spot CT alpha before it pumps, and know which anonymous dev just rugged a meme coin.
✅ You turn complexity into virality – You can explain re-staking with a meme or thread LSDfi in a way that gets retweeted by whales.
✅ You’re a strategist, not just a poster – You know how to grow audiences across Twitter, LinkedIn, Farcaster, and beyond—with tactics unique to Web3.
✅ You move at blockchain speed – When news breaks (hacks, forks, SEC lawsuits), you’re first to react with sharp takes, not corporate fluff.
What you’ll do:
🔥 Run our social empire – Twitter, LinkedIn, Telegram, Mirror—you’ll own the voice and vibe.
🔥 Launch viral campaigns – Think threadstorms, meme wars, and community challenges that boost engagement.
🔥 Partner with influencers – Coordinate takeovers, Spaces, and collabs with top names in DeFi.
🔥 Turn data into action – Track what content performs and double down on what works.
Hard requirements:
🔒 Proof of your crypto chops – Show us your anon Twitter with killer engagement, a newsletter, or a Discord you’ve grown.
🔒 No corporate-speak – We want someone who talks like a real human, not a PR bot.
Want to redefine crypto media? Send your resume + links to your best social work (or secret CT account). Payment in USDC/ETH possible.
Is this you?
✅ You breathe crypto 24/7 – You track Vitalik’s tweets, spot CT alpha before it pumps, and know which anonymous dev just rugged a meme coin.
✅ You turn complexity into virality – You can explain re-staking with a meme or thread LSDfi in a way that gets retweeted by whales.
✅ You’re a strategist, not just a poster – You know how to grow audiences across Twitter, LinkedIn, Farcaster, and beyond—with tactics unique to Web3.
✅ You move at blockchain speed – When news breaks (hacks, forks, SEC lawsuits), you’re first to react with sharp takes, not corporate fluff.
What you’ll do:
🔥 Run our social empire – Twitter, LinkedIn, Telegram, Mirror—you’ll own the voice and vibe.
🔥 Launch viral campaigns – Think threadstorms, meme wars, and community challenges that boost engagement.
🔥 Partner with influencers – Coordinate takeovers, Spaces, and collabs with top names in DeFi.
🔥 Turn data into action – Track what content performs and double down on what works.
Hard requirements:
🔒 Proof of your crypto chops – Show us your anon Twitter with killer engagement, a newsletter, or a Discord you’ve grown.
🔒 No corporate-speak – We want someone who talks like a real human, not a PR bot.
Want to redefine crypto media? Send your resume + links to your best social work (or secret CT account). Payment in USDC/ETH possible.
Payment in Crypto
bitcastle .
KOL Business Development
City Of Manila, Philippines
City Of Manila, Philippines
Full time
Remote
About the Company
Bitcastle is a cryptocurrency exchange platform which aims to create a new age of exchange where everyone can use it safely and have fun. As we expand and take a more active approach to global expansion, bitcastle is looking to hire a Full-Time KOL Business Development to join our team.
About the Role
We are seeking a dynamic and results-driven KOL Business Development to drive user growth and enhance brand visibility for our exchange. In this role, you will be responsible for identifying, engaging, and nurturing relationships with local KOLs, influencers, communities, projects, and strategic partners to promote our platform.
- Identify and build relationships with local KOLs/influencers/, communities, projects, and other potential partners to promote the exchange in order to achieve user growth.
- As a representative of the exchange, to build and maintain a good relationship with KOLs and marketing channels to achieve long-term partnership
- Be responsible for the execution and performance of KOL marketing strategy, track and analyze results, and make adjustments to ensure optimal performance and maximum ROI.
- Stay updated with local industry developments trends, conduct market research and create strategies when required
- Attend events as a representative of the exchange when required, expand network and bring in more leads for the exchange
Requirements:
- Experience as KOL BD in similar companies/markets
- Understanding of cryptocurrency
- Fluent in English
Preferred Qualification:
- Japanese speaking proficiency
Bitcastle is a cryptocurrency exchange platform which aims to create a new age of exchange where everyone can use it safely and have fun. As we expand and take a more active approach to global expansion, bitcastle is looking to hire a Full-Time KOL Business Development to join our team.
About the Role
We are seeking a dynamic and results-driven KOL Business Development to drive user growth and enhance brand visibility for our exchange. In this role, you will be responsible for identifying, engaging, and nurturing relationships with local KOLs, influencers, communities, projects, and strategic partners to promote our platform.
- Identify and build relationships with local KOLs/influencers/, communities, projects, and other potential partners to promote the exchange in order to achieve user growth.
- As a representative of the exchange, to build and maintain a good relationship with KOLs and marketing channels to achieve long-term partnership
- Be responsible for the execution and performance of KOL marketing strategy, track and analyze results, and make adjustments to ensure optimal performance and maximum ROI.
- Stay updated with local industry developments trends, conduct market research and create strategies when required
- Attend events as a representative of the exchange when required, expand network and bring in more leads for the exchange
Requirements:
- Experience as KOL BD in similar companies/markets
- Understanding of cryptocurrency
- Fluent in English
Preferred Qualification:
- Japanese speaking proficiency
bitcastle .
Customer Service Executive
City Of Manila, Philippines
City Of Manila, Philippines
Part time
Remote
About the Company
Bitcastle is a cryptocurrency exchange platform which aims to create a new age of exchange where everyone can use it safely and have fun. As we expand and take a more active approach to global expansion, bitcastle is looking to hire a Part- Time Customer Service Executive to join our team.
About the Role
The role involves managing customer inquiries, handling KYC processes, responding to emails, and monitoring messages across platforms like Telegram and WhatsApp. The ideal candidate will have strong Japanese language skills and a customer service background. This role will be fully remote.
- Handle customer inquiries via email and chat support.
- Support customer service operations, including but not limited to user research, handling enquiries, process withdrawal applications, KYC, bug reporting, Q&A updates.
- Understand policies and procedures of global customer support, adhere to policies set, ensuring high quality support is provided to users in accordance with global standard.
- Create and post customer announcements.
- Monitor and respond to messages on Telegram and WhatsApp.
- Provide support related to Forex and Crypto (knowledge is a plus).
- During business hours, in addition to responding to customer inquiries, you will be asked to perform tasks such as operating systems to create support-related systems or help center articles as needed, checking payment status, and editing or revising FAQ page
- Maintain a high level of professionalism in customer interactions.
- Adapt to potential future responsibilities, including chatbot and phone support.
- Work together and support other departments to report and solve any customer queries.
Requirements:
- Minimum 2 years of experience in customer service.
- Japanese language proficiency (mandatory).
- Ability to work 3 weekdays + 2 weekends (at least 1 weekend day required).
- Strong communication and interpersonal skills.
- Available to start immediately.
- Strong written and verbal communication skills.
- Must have a PC available for work (smartphones and iPads are not acceptable).
- Must have an internet environment with no data usage restrictions.
Preferred Qualification:
- Knowledge of Forex and Crypto.
Bitcastle is a cryptocurrency exchange platform which aims to create a new age of exchange where everyone can use it safely and have fun. As we expand and take a more active approach to global expansion, bitcastle is looking to hire a Part- Time Customer Service Executive to join our team.
About the Role
The role involves managing customer inquiries, handling KYC processes, responding to emails, and monitoring messages across platforms like Telegram and WhatsApp. The ideal candidate will have strong Japanese language skills and a customer service background. This role will be fully remote.
- Handle customer inquiries via email and chat support.
- Support customer service operations, including but not limited to user research, handling enquiries, process withdrawal applications, KYC, bug reporting, Q&A updates.
- Understand policies and procedures of global customer support, adhere to policies set, ensuring high quality support is provided to users in accordance with global standard.
- Create and post customer announcements.
- Monitor and respond to messages on Telegram and WhatsApp.
- Provide support related to Forex and Crypto (knowledge is a plus).
- During business hours, in addition to responding to customer inquiries, you will be asked to perform tasks such as operating systems to create support-related systems or help center articles as needed, checking payment status, and editing or revising FAQ page
- Maintain a high level of professionalism in customer interactions.
- Adapt to potential future responsibilities, including chatbot and phone support.
- Work together and support other departments to report and solve any customer queries.
Requirements:
- Minimum 2 years of experience in customer service.
- Japanese language proficiency (mandatory).
- Ability to work 3 weekdays + 2 weekends (at least 1 weekend day required).
- Strong communication and interpersonal skills.
- Available to start immediately.
- Strong written and verbal communication skills.
- Must have a PC available for work (smartphones and iPads are not acceptable).
- Must have an internet environment with no data usage restrictions.
Preferred Qualification:
- Knowledge of Forex and Crypto.
OpenCover
Backend Blockchain Engineer
London, UK
London, UK
Full time
Hybrid
👋 GM
We are OpenCover — our mission is to keep the world safe onchain.
OpenCover.com operates at the intersection of blockchain security and insurance. Working in tandem with leading underwriters and industry players, we protect individuals, businesses and institutions against onchain risks such as malicious transactions, smart contract exploits and depegs.
Founded by Y Combinator alums, our team is backed by Tier 1 investors including Alliance, Coinbase Ventures (Base Ecosystem Fund), NFX, Village Global and Orange DAO, with support from the Lloyd’s of London Lab.
Want to join a high-performance, high-integrity team taking onchain safety to the next level? Read on.
🚀 Your role
You would join the founding team to develop core backend infrastructure working closely with our CTO. Your role would focus on expanding the first transaction security layer to insure billions in value. The work involves collaborating with top protocols and industry players to prevent incidents like the ByBit hack from ever happening again.
Areas you’ll work on
Soft auditing and semantic modelling of leading protocol designs and functions.
Designing, implementing and backtesting transaction validation checks.
Developing asset pricing and transaction risk models.
Tracking exposure and other insurance metrics in real-time.
Iterating and expanding our API based on customer feedback.
Staying up to date with industry trends including EIPs and security incidents.
You’d be a great fit if
You’re a generalist who quickly embraces new technologies and challenges with a passion for building products from the ground up in a collaborative, tight-knit team.
You go all out to use your knowledge and work well autonomously but know when to reach out for support.
You have 5+ years of full-time experience developing and shipping backend services with Node.js and TypeScript.
You’ve designed, implemented and/or audited smart contracts on EVM-compatible chains and have hands-on experience using DeFi.
You’re familiar with PostgreSQL, messaging brokers, AWS/GCP, Docker, Bash and Linux.
You are constantly improving your tech stack and use AI tools to accelerate development.
🙌 Our offer
Put your dent in the universe: build products for and with some of the largest players across Web3 and TradFi.
Directly impact company trajectory and play a key role in driving onchain adoption.
Work IRL with the team at Lloyd’s of London 1–5 days a week— your choice!
Flexible hours with 28 days of paid holiday plus company closure days.
Competitive compensation based on experience + 0.1–0.5% equity.
The equipment you need to do your best work + $1,000 for well-being and personal development each year.
Company-paid travel to events and conferences, if that’s your thing!
Ready to apply?
Head to opencover.com/apply/bbe and get shortlisted in 10 minutes or less.
We are OpenCover — our mission is to keep the world safe onchain.
OpenCover.com operates at the intersection of blockchain security and insurance. Working in tandem with leading underwriters and industry players, we protect individuals, businesses and institutions against onchain risks such as malicious transactions, smart contract exploits and depegs.
Founded by Y Combinator alums, our team is backed by Tier 1 investors including Alliance, Coinbase Ventures (Base Ecosystem Fund), NFX, Village Global and Orange DAO, with support from the Lloyd’s of London Lab.
Want to join a high-performance, high-integrity team taking onchain safety to the next level? Read on.
🚀 Your role
You would join the founding team to develop core backend infrastructure working closely with our CTO. Your role would focus on expanding the first transaction security layer to insure billions in value. The work involves collaborating with top protocols and industry players to prevent incidents like the ByBit hack from ever happening again.
Areas you’ll work on
Soft auditing and semantic modelling of leading protocol designs and functions.
Designing, implementing and backtesting transaction validation checks.
Developing asset pricing and transaction risk models.
Tracking exposure and other insurance metrics in real-time.
Iterating and expanding our API based on customer feedback.
Staying up to date with industry trends including EIPs and security incidents.
You’d be a great fit if
You’re a generalist who quickly embraces new technologies and challenges with a passion for building products from the ground up in a collaborative, tight-knit team.
You go all out to use your knowledge and work well autonomously but know when to reach out for support.
You have 5+ years of full-time experience developing and shipping backend services with Node.js and TypeScript.
You’ve designed, implemented and/or audited smart contracts on EVM-compatible chains and have hands-on experience using DeFi.
You’re familiar with PostgreSQL, messaging brokers, AWS/GCP, Docker, Bash and Linux.
You are constantly improving your tech stack and use AI tools to accelerate development.
🙌 Our offer
Put your dent in the universe: build products for and with some of the largest players across Web3 and TradFi.
Directly impact company trajectory and play a key role in driving onchain adoption.
Work IRL with the team at Lloyd’s of London 1–5 days a week— your choice!
Flexible hours with 28 days of paid holiday plus company closure days.
Competitive compensation based on experience + 0.1–0.5% equity.
The equipment you need to do your best work + $1,000 for well-being and personal development each year.
Company-paid travel to events and conferences, if that’s your thing!
Ready to apply?
Head to opencover.com/apply/bbe and get shortlisted in 10 minutes or less.