Staff Backend Engineer
Canada +1
Full time
Remote
Compensation is not specified
Role
Backend Engineer
Description
Join our team at Dapper Labs, where we specialize in merging blockchain technology with gaming. Our noteworthy projects, such as CryptoKitties, Disney Pinnacle, NBA Top Shot, and NFL All Day, are digital collectibles platforms rooted in blockchain technology. As part of our team, you will have a key role in a vibrant and fast-paced setting, constantly engaging with a passionate global audience, and contributing to pioneering advancements in both blockchain and entertainment fields.
If you are someone who is data-driven, thrives in dynamic environments, and is passionate about sports, gaming, and Web3 technologies, this could be your ideal opportunity.
We are currently seeking a talented Staff Backend Engineer to elevate our Digital Sports Collectibles team. In this position, you will be responsible for enhancing the speed, efficiency, and readiness for launch of our Sports Collectibles products.
Responsibilities
- Design and plan scalable backend systems to support high-performance user interactions across our primary platforms.
- Develop and maintain robust APIs and backend services with a strong emphasis on reliability, security, and ease of use for developers.
- Create intricate server-side logic to integrate blockchain technologies and manage high-throughput data workflows and transactions.
- Implement real-time monitoring and alert systems to identify and address performance bottlenecks and optimization opportunities.
- Lead backend initiatives throughout the development lifecycle, from conceptualization and design to deployment and ongoing enhancements.
- Collaborate effectively with frontend, mobile, and product teams to deliver comprehensive solutions that are both high-performing and user-friendly.
- Supervise database design, administration, and optimization across multiple systems and services.
- Document system architecture, APIs, and processes for internal and external development stakeholders.
- Ensure secure and efficient handling of user data and interactions.
- Contribute to technical strategy development and provide mentorship to junior team members as a backend expertise resource.
Qualifications
- Possess 6+ years of backend engineering experience, with a preference for proficiency in Go (Golang) or similar high-performance backend languages.
- Demonstrated ability to design and implement scalable systems suited for production in a cloud-native environment.
- In-depth knowledge of API architecture, distributed systems, and database technologies (SQL and NoSQL).
- Experience leading backend projects from inception to deployment.
- Strong proponent of clean code practices, testing, documentation, and best version control practices (Git).
- Proficiency working in Agile, cross-functional teams, delivering iteratively, and maintaining a long-term vision.
- A natural problem solver, passionate about technical challenges, and committed to delivering impactful solutions at scale.
- Enthusiasm for blockchain technology, gaming, and reshaping digital ownership.
Preferred Skills
- Experience in designing and implementing cloud infrastructure (AWS, GCP, or similar).
- Background in blockchain technologies, smart contract integration, or NFTs.
- Previous involvement in developing backend tools that improve developer workflows or platform efficiency.
- Contribution to open-source backend frameworks or libraries.
Dapper Labs stands as a foremost consumer crypto company, recognized for industry-leading products like CryptoKitties, NBA Top Shot, NFL All Day, Disney Pinnacle, and Dapper Wallet. Additionally, we are the original creators of Flow, a decentralized blockchain engineered for scalability and user-friendliness. Our mission is to enhance accessibility and enjoyment globally through consumer adoption of decentralized technologies. We have received substantial funding from esteemed investors like Andreessen Horowitz, Coatue, Union Square Ventures, Google Ventures (GV), Samsung, and notable founders of various prominent companies.
Skills Required
Dapper Labs
Website
Not specified
Company 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.