Senior Back-End Engineer, DeFi Wallet
Paris, France
Full time
Office
Compensation is not specified
Role
Backend Engineer
Description
DESCRIPTION
Blockchain.com is the forefront software platform for digital assets globally. We are seeking Kotlin and Solidity Developers with expertise in blockchain protocols and EVM networks. As a backend engineer on the DeFi team, you will be involved in a variety of projects, such as enhancing our non-custodial wallets network support and developing smart contracts. Additionally, you will be tasked with integrating third-party vendors supplying data for crypto tokens, DApps, and DAOs and centralizing logic from wallet clients into backend services.
In the role of a Senior Back-End Engineer, your responsibilities include leading technical discussions, influencing the approach, and advocating for best engineering practices to positively impact the team's development.
RESPONSIBILITIES
- Develop robust, reliable software to manage multiple networks and support our expanding range of products and users
- Collaborate with an engineering team dedicated to maintaining high standards and deploying secure and high-performing systems
- Engage directly with multiple blockchains in the core of Blockchain.com's solution
- Utilize open source technologies like Docker, Kafka, and MySQL
- Prioritize security in all aspects of the work
- Collaborate with interdisciplinary teams to consistently deliver high-quality products
- Optimize existing systems for scalability, extensibility, and performance while creating reusable, modular code for various Blockchain.com products
REQUIREMENTS
- Integrity, the most essential quality for this role
- Proficiency in Typescript, Solidity, and ideally Kotlin/JVM
- Experience with Blockchain technologies, particularly EVM or non-EVM chains and defi protocols
- Strong motivation, self-driven, and enthusiastic about cryptocurrencies
- Comprehensive understanding of blockchain systems and ideally prior experience working closely with one
- Ability to navigate novel challenges and curiosity to learn new technologies
- Advocacy for best engineering practices, proficiency in multiple programming languages, and a practical approach to solving complex problems
- Commitment to high levels of test coverage, technical documentation, and effective monitoring
- Accountability for all assigned projects
COMPENSATION & BENEFITS
- Competitive salary based on experience and equity in a leading company
- Prime office location in Paris with mandatory on-site work for four days per week
- Work from Anywhere policy
- Opportunity to play a significant role and progress in a rapidly expanding technology company within an emerging industry
- Unlimited vacation policy, inclusive of performance-based bonuses paid in cash
- Company-issued Apple equipment
Skills Required
Blockchain.com
Website
www.blockchain.comCompany size
Not specified
Location
United States
Description
Not specified
XanaNetworo
Crypto Outreach Hunter – High Commission (Remote)
Full time
Remote
XanaNetwork (@xananetwork) is hiring 5–8 outreach hunters. We just relaunched — same core team with a track record of multi-hundred-million caps and six-figure holder bases. Your job:• Send 300–600 high-quality cold DMs per day on Twitter (DexScreener, Pump.fun, new launches)• Get warm replies → we close Pay (performance-first):• $800–$1,200 USD monthly base• + $1,500–$4,000 bonus per signed client• Top hunters clear $8k–$15k+/mo on commission• Paid trial $100 flat — first 8 who hit 5+ warm replies get hired No experience needed — we’ll train hungry people. Apply → DM @mainnetmike on Twitter with:1. How many DMs you can send daily2. Why you want the role Hungry & coachable only.
Payment in Crypto
Chi Ng.
Global Business Development Manager (KOL Partnerships) - LATAM
San Miguel, El Salvador +2
San Miguel, El Salvador +2
Full time
Remote
BingX is a leading global crypto exchange founded in 2018, serving over 20 million users with spot, futures, copy trading, and asset management services. We’re looking for a Business Development Manager to grow and manage KOLs, agents, and project partnerships, driving user acquisition and trading volume across global markets. Requirement: experience in crypto, influencer partnerships, and market development, with strong communication skills in English and Spanish. Note: Please include key achievements/past performance data in your resume (e.g., trading volume, regions managed, languages spoken, KOLs region). Apply here or check my profile for more information.
Payment in Crypto
Chi Ng.
Global Business Development Manager (KOL Partnerships) - MENA
Cairo, Egypt +5
Cairo, Egypt +5
Full time
Remote
BingX is a leading global crypto exchange founded in 2018, serving over 20 million users with spot, futures, copy trading, and asset management services. We’re looking for a Business Development Manager to grow and manage KOLs, agents, and project partnerships, driving user acquisition and trading volume across global markets. Requirement: experience in crypto, influencer partnerships, and market development, with strong communication skills in English and Arabic. Note: Please include key achievements/past performance data in your resume (e.g., trading volume, regions managed, languages spoken, KOLs region). Apply here or check my profile for more information.
Payment in Crypto
Lynqex Labs
Senior Software Engineer (Go)
California, USA
California, USA
Full time
Remote
We are looking for a talented Senior Software Engineer with expertise in Go programming language to join our team. The successful candidate will be responsible for developing cutting-edge blockchain and crypto solutions, specifically focusing on smart contract development.
Key Responsibilities:
- Design, develop, and maintain blockchain applications using Go language.
- Implement smart contracts and integrate with existing blockchain frameworks.
- Collaborate with cross-functional teams to ensure efficient development and integration of software solutions.
Required Skills:
- Proficiency in Golang programming language.
- Strong understanding of blockchain technology and its applications.
- Experience in smart contract development.
- Knowledge of cryptography and security principles in the context of blockchain.
- Familiarity with blockchain frameworks such as Ethereum, Hyperledger, or other decentralized networks.
If you are passionate about blockchain and crypto technology, and have the skills to contribute to innovative software solutions, we would love to hear from you. Join us in shaping the future of decentralized applications with your expertise as a Senior Software Engineer.
Key Responsibilities:
- Design, develop, and maintain blockchain applications using Go language.
- Implement smart contracts and integrate with existing blockchain frameworks.
- Collaborate with cross-functional teams to ensure efficient development and integration of software solutions.
Required Skills:
- Proficiency in Golang programming language.
- Strong understanding of blockchain technology and its applications.
- Experience in smart contract development.
- Knowledge of cryptography and security principles in the context of blockchain.
- Familiarity with blockchain frameworks such as Ethereum, Hyperledger, or other decentralized networks.
If you are passionate about blockchain and crypto technology, and have the skills to contribute to innovative software solutions, we would love to hear from you. Join us in shaping the future of decentralized applications with your expertise as a Senior Software Engineer.
Vitalik Buterin
Community Moderator
Full time
Remote
About Us
We are a boutique, Asia-based Web3 marketing agency working with early-stage and growth-stage crypto projects across DeFi, infrastructure, consumer apps, and gaming.
Our team has executed campaigns with leading L1/L2 ecosystems, DeFi protocols, and community-driven projects.
We focus on narrative design, community activation, cross-market growth, and delivering impactful results for clients in Asia and globally.
We are now expanding our BD and Community Ops teams.
The Role: Community Moderator (36k–90k)
We’re hiring a community moderator to support client communities across Telegram, Discord, and X.
This is a front-line, user-facing role requiring empathy, high engagement, and strong judgment.
Responsibilities
Moderate multiple client communities to ensure safety, clarity, and engagement.
Respond to user questions, coordinate AMA/announcement schedules, post updates.
Keep communities active during key moments: launches, airdrops, campaigns, content releases.
Identify community issues or risks early and escalate appropriately.
Summarize community sentiment and user feedback for internal strategy teams.
Maintain tone, credibility, and professionalism when interacting with users.
Requirements
Prior experience moderating Web3 communities or Web2 social groups.
Familiarity with crypto user behavior, culture, and community patterns.
Excellent written communication and quick response ability.
High reliability; able to cover activity across Asian time zones.
Familiarity with the Southeast Asia KOL landscape, with strong existing relationships preferred.
Bonus
Ability to create short-form content or memes.
Multilingual (EN + CN preferred).
Experience with community analytics tools.
We are a boutique, Asia-based Web3 marketing agency working with early-stage and growth-stage crypto projects across DeFi, infrastructure, consumer apps, and gaming.
Our team has executed campaigns with leading L1/L2 ecosystems, DeFi protocols, and community-driven projects.
We focus on narrative design, community activation, cross-market growth, and delivering impactful results for clients in Asia and globally.
We are now expanding our BD and Community Ops teams.
The Role: Community Moderator (36k–90k)
We’re hiring a community moderator to support client communities across Telegram, Discord, and X.
This is a front-line, user-facing role requiring empathy, high engagement, and strong judgment.
Responsibilities
Moderate multiple client communities to ensure safety, clarity, and engagement.
Respond to user questions, coordinate AMA/announcement schedules, post updates.
Keep communities active during key moments: launches, airdrops, campaigns, content releases.
Identify community issues or risks early and escalate appropriately.
Summarize community sentiment and user feedback for internal strategy teams.
Maintain tone, credibility, and professionalism when interacting with users.
Requirements
Prior experience moderating Web3 communities or Web2 social groups.
Familiarity with crypto user behavior, culture, and community patterns.
Excellent written communication and quick response ability.
High reliability; able to cover activity across Asian time zones.
Familiarity with the Southeast Asia KOL landscape, with strong existing relationships preferred.
Bonus
Ability to create short-form content or memes.
Multilingual (EN + CN preferred).
Experience with community analytics tools.
Payment in Crypto