blockchain developer

Hyphen Connect Limited

<div>Summary: Join a prominent Layer 1 blockchain team focused on expanding its global developer footprint. This role will involve strategizing ecosystem growth and supporting grant winners. An engineering background coupled with DevRel experience is essential for success in this position.

Responsibilities:
<ul>
<li>Develop and implement strategies to expand the blockchain ecosystem.</li>
<li>Support and mentor grant winners to ensure successful project outcomes.</li>
<li>Engage with the developer community to foster growth and collaboration.</li>
<li>Organize and participate in events and workshops to promote the blockchain platform.</li>
<li>Collaborate with cross-functional teams to align ecosystem goals with business objectives.</li>
</ul>
Required Skills:
<ul>
<li>Proven engineering background with relevant experience in blockchain technologies.</li>
<li>Strong experience in Developer Relations (DevRel) or a similar field.</li>
<li>Excellent communication and presentation skills.</li>
<li>Ability to work effectively in a fast-paced, dynamic environment.</li>
<li>Passion for blockchain technology and its potential impact on various industries.</li></ul></div>

Technical Ecosystem Lead (L1)

Real Estate Company - Dubai

Job Title: Full Stack Developer (Web2 + Web3)Location: On-siteEmployment Type: Full-TimeAbout the RoleWe are looking for a highly skilled full stack developer with strong experience in both Web2 and Web3 ecosystems. You will be responsible for building scalable applications, integrating blockchain infrastructure, developing SDKs, and working across wallets, nodes, and Layer 1 blockchain networks.You will play a key role in bridging traditional web applications with decentralized systems and building production-grade blockchain-powered products.Key Responsibilities<ul><li>Design, develop, and maintain full-stack applications (frontend + backend)</li><li>Build and integrate Web3 features into existing and new platforms</li><li>Develop and maintain SDKs for product integrations</li><li>Work with blockchain nodes, RPC endpoints, and indexing services</li><li>Integrate and manage crypto wallets (MetaMask, WalletConnect, etc.)</li><li>Develop and deploy smart contracts using Solidity</li><li>Work with EVM-compatible Layer 1 networks</li><li>Implement secure and scalable backend architectures for blockchain interactions</li><li>Collaborate with product and engineering teams to design decentralized solutions</li><li>Optimize performance, security, and scalability of distributed applications</li><li>Work with OpenZeppelin libraries (smart contract standards, security modules)</li><li>Build APIs and services that connect Web2 systems with Web3 infrastructure</li></ul>Required Skills &amp; ExperienceCore Engineering<ul><li>Strong experience as a Full Stack Developer (3+ years preferred)</li><li>Proficiency in modern frontend frameworks (React.js / Next.js or similar)</li><li>Strong backend development experience (Node.js, NestJS, or similar)</li><li>Experience with REST APIs and GraphQL</li><li>Database experience (PostgreSQL, MongoDB, Redis)</li></ul>Web3 / Blockchain Expertise<ul><li>Strong hands-on experience with Solidity smart contracts</li><li>Experience working with EVM-compatible chains (Ethereum, Polygon, BSC, Arbitrum, etc.)</li><li>Deep understanding of wallet integration and authentication</li><li>Experience with blockchain nodes, RPCs, indexing, and event listeners</li><li>Familiarity with Web3 libraries (ethers.js, web3.js, viem, wagmi, etc.)</li><li>Experience using OpenZeppelin contracts and security standards</li><li>Understanding of gas optimization and smart contract security best practices</li></ul>Integration &amp; SDK Development<ul><li>Experience designing and building developer SDKs or APIs</li><li>Ability to integrate multiple products into unified developer tools</li><li>Strong understanding of modular architecture and reusable libraries</li><li>Experience with CI/CD for SDK publishing and versioning</li></ul>Nice to Have (Bonus Skills)<ul><li>Experience in Flutter (mobile app development) or React Native</li><li>Experience building mobile wallets or crypto apps</li><li>Knowledge of Layer 2 scaling solutions</li><li>Experience with zero-knowledge proofs (ZK), rollups, or DeFi protocols</li><li>DevOps experience (Docker, Kubernetes, AWS/GCP)</li><li>Experience with cross-chain bridges or interoperability protocols</li><li>Familiarity with crypto security audits</li><li>Experience in high-performance backend systems</li></ul>Benefits<ul><li>Competitive salary [based on experience]</li><li>Opportunity to work on cutting-edge blockchain + AI + Web3 systems</li><li>Direct impact on product architecture and technical decisions</li><li>Fast-paced startup environment with global exposure</li><li>Learning and growth in advanced blockchain engineering</li><li>Conference, hackathon, and research participation support</li><li>Access to early-stage Web3 infrastructure projects</li></ul>Work Location: In person

Full Stack Developer (Web2 + Web3)

<div>Summary: Join our established blockchain software house, specializing in enterprise-grade private and public chain solutions. We are seeking a Senior Java Developer to enhance our backend services and contribute to the development of innovative blockchain applications.

Responsibilities:
<ul>
<li>Develop and maintain backend services using Java to support blockchain applications.</li>
<li>Collaborate with frontend developers to integrate APIs with React/Vue interfaces.</li>
<li>Design, implement, and optimize scalable blockchain solutions for enterprise clients.</li>
<li>Troubleshoot and resolve complex technical issues related to backend services.</li>
<li>Stay updated with the latest trends and best practices in blockchain technology.</li>
</ul>
Required Skills:
<ul>
<li>Proven experience in Java development, particularly in a senior role.</li>
<li>Strong expertise in API integration and development.</li>
<li>Experience with frontend technologies such as React or Vue.js is beneficial.</li>
<li>Familiarity with blockchain concepts and technologies is preferred.</li>
<li>Excellent problem-solving skills and attention to detail.</li>
<li>Strong communication skills and ability to work collaboratively in a team environment.</li></ul></div>

Senior Full-Stack Java & Front-End Engineer

<div>Summary: Join a dynamic team to enhance a developer-focused protocol that facilitates cross-chain communication. You will play a crucial role in assisting external developers with integration and creating comprehensive technical documentation to streamline their experience.

Responsibilities:
<ul>
<li>Collaborate with external developers to facilitate the integration of cross-chain communication protocols.</li>
<li>Develop and maintain technical documentation to guide developers in implementing solutions.</li>
<li>Provide technical support and troubleshooting assistance to resolve integration issues.</li>
<li>Continuously improve protocol features by contributing innovative ideas and feedback.</li>
<li>Stay up-to-date with industry trends and advancements in blockchain technology.</li>
</ul>
Required Skills:
<ul>
<li>Proficiency in JavaScript and Solidity programming languages.</li>
<li>Strong written and verbal communication skills.</li>
<li>Experience with blockchain technology and cross-chain protocols.</li>
<li>Ability to work collaboratively in a team-oriented environment.</li>
<li>Problem-solving skills and attention to detail.</li></ul></div>

Senior Solutions Engineer (JS/Solidity)

<div>Summary: Join a leading global payments firm as a Soroban Smart Contracts Developer. Leverage the Stellar network to revolutionize cross-border settlements by developing smart contracts and integrating anchor services. Your expertise will enhance the efficiency and security of our payment solutions.

Responsibilities:
<ul>
<li>Develop and optimize Soroban smart contracts for cross-border payment solutions.</li>
<li>Integrate anchor services within the Stellar network framework.</li>
<li>Collaborate with cross-functional teams to ensure seamless integration and functionality.</li>
<li>Conduct testing and debugging to ensure robust performance of smart contracts.</li>
<li>Stay updated with the latest trends and developments in blockchain technology and payments.</li>
<li>Document development processes and provide technical support to relevant stakeholders.</li>
</ul>
Required Skills:
<ul>
<li>Proven experience in developing with Stellar SDKs and Rust programming language.</li>
<li>Strong understanding of blockchain technology and decentralized networks.</li>
<li>Familiarity with smart contract development and deployment processes.</li>
<li>Excellent problem-solving skills and attention to detail.</li>
<li>Strong communication and collaboration skills.</li>
<li>Ability to work in a dynamic and fast-paced environment.</li></ul></div>

Software Engineer (Solana)

<div>Summary: We are seeking a skilled Ethereum Developer to join our team in enhancing and optimizing the Ethereum development experience. The role involves implementing EVM-compatible features and optimizing gas usage. The ideal candidate will have a deep understanding of Ethereum internals and Solidity.

Responsibilities:
<ul>
<li>Develop and implement EVM-compatible features to enhance Ethereum development.</li>
<li>Optimize gas usage for improved efficiency and performance.</li>
<li>Collaborate with the team to refine and enhance Ethereum infrastructure.</li>
<li>Conduct thorough testing and validation of smart contracts and features.</li>
<li>Stay updated with the latest industry trends and advancements in Ethereum technology.</li>
<li>Provide technical support and troubleshooting for Ethereum-related issues.</li>
</ul>
Required Skills:
<ul>
<li>Proven experience in Ethereum development and smart contract programming.</li>
<li>Strong proficiency in Solidity programming language.</li>
<li>In-depth understanding of Ethereum internals and blockchain technology.</li>
<li>Experience with gas optimization and performance tuning.</li>
<li>Familiarity with EVM-compatible features and infrastructure.</li>
<li>Excellent problem-solving skills and attention to detail.</li>
<li>Strong communication and teamwork abilities.</li></ul></div>

Software Engineer (EVM)

<div>Summary: Join a venture-backed Web3 startup at the forefront of innovation, creating next-generation social and financial primitives. As a Senior Software Engineer, you will design and develop core protocol features and secure smart contracts that will drive the future of decentralized technology.

Responsibilities:
<ul>
<li>Architect and implement core protocol features for Web3 applications.</li>
<li>Develop and deploy secure smart contracts using Solidity.</li>
<li>Collaborate with cross-functional teams to integrate blockchain solutions.</li>
<li>Ensure the scalability and performance of blockchain implementations.</li>
<li>Stay updated with the latest developments in blockchain technology and EVM internals.</li>
<li>Conduct code reviews and provide mentorship to junior developers.</li>
</ul>
Required skills:
<ul>
<li>Proficiency in Solidity and TypeScript.</li>
<li>Strong understanding of Ethereum Virtual Machine (EVM) internals.</li>
<li>Experience in developing and deploying smart contracts on blockchain platforms.</li>
<li>Knowledge of decentralized finance (DeFi) and blockchain protocols.</li>
<li>Excellent problem-solving and analytical skills.</li>
<li>Strong communication and collaboration abilities.</li></ul></div>

Senior Software Engineer (Crypto/Web3)

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