Senior Frontend Developer

About the Role
We are seeking a Senior Solidity Engineer to design, develop, audit, and optimize high-performance smart contracts on Ethereum and EVM-compatible chains. As a senior contributor, you will lead critical protocol development, mentor junior engineers, and ensure our on-chain systems are secure, gas-efficient, scalable, and production-ready in a fast-moving Web3 environment.
Key Responsibilities
Architect and implement complex smart contracts using Solidity for DeFi protocols, NFTs, governance systems, bridges, oracles, and other blockchain primitives.
Conduct thorough security reviews, formal verification where applicable, and collaborate with external auditors.
Optimize contracts for gas efficiency, security, and maintainability.
Integrate smart contracts with front-end applications, off-chain services, indexing solutions (The Graph, Subsquid), and cross-chain infrastructure.
Develop and maintain comprehensive test suites (unit, integration, fuzzing, and invariant testing).
Participate in code reviews, architectural decisions, and technical roadmap planning.
Mentor mid-level and junior engineers on best practices, security patterns, and Solidity internals.
Monitor deployed contracts, respond to incidents, and implement post-deployment upgrades (via proxies where applicable).
Stay current with EVM upgrades (e.g., Prague/Electra), L2 scaling solutions (Optimism, Arbitrum, zkSync, etc.), and emerging standards (ERC-xxx, Account Abstraction).
Required Qualifications (Must-Have)
1-3 years of professional experience in Solidity development with a proven track record of deploying secure, audited smart contracts to mainnet.
Deep mastery of Solidity (v0.8.x+), including advanced patterns (reentrancy guards, upgradeable proxies – UUPS/Transparent, diamond pattern, libraries).
Strong understanding of EVM internals, gas optimization techniques, and security vulnerabilities (SWC registry, common attack vectors).
Proficiency with smart contract testing frameworks: Foundry (preferred) or Hardhat + ethers.js/waffle.
Experience with formal verification tools (Certora, Slither, MythX) and static analysis.
Solid experience in at least one major Web3 domain: DeFi (AMM, lending, derivatives), NFTs/marketplaces, RWA, or infrastructure (bridges, account abstraction).
Strong TypeScript/JavaScript skills for tooling and integration.
Experience working with Layer 2 solutions and cross-chain messaging protocols.
Excellent written and verbal communication skills; ability to write clear technical documentation (NatSpec, architecture decision records).
Track record of contributing to open-source projects or public GitHub repositories (please share links).
Preferred Qualifications (Strong Plus)
Previous experience at a top-tier Web3 protocol, audit firm (e.g., Trail of Bits, OpenZeppelin), or high-profile DeFi project.
Knowledge of Rust or other languages for blockchain development (bonus for familiarity with zk-proofs or Move).
Experience with Account Abstraction (ERC-4337), intent-based architectures, or MEV mitigation.
Familiarity with governance frameworks (Governor, Tally) and tokenomics design.
Contributions to standards (EIPs) or participation in Ethereum core dev calls.
Security researcher background or history of responsible disclosure.
What We Offer
Competitive compensation (base + significant token equity).
Fully remote-friendly with flexible hours.
Opportunity to work on cutting-edge blockchain infrastructure with real user impact.
Budget for conferences, security tooling, and continuous learning.
Collaborative, high-trust engineering culture.

Hiring: Native English Call Center Representatives (Remote)
We are looking for confident, communicative individuals with a native-level English accent, preferably American (US), to join our remote call center team.
Requirements:
Native or native-level English speaker (US accent preferred)
Excellent communication and conversation skills
Comfortable speaking on the phone
Reliable internet connection and a quiet working environment
Professional and friendly attitude
Compensation:
Fixed payment of $15 per completed call
Flexible schedule
Remote work
If you have a clear, natural English accent and enjoy talking to people, we'd love to hear from you.
To apply, send us a short voice recording introducing yourself along with your contact information.

 
Vous cherchez un emploi offrant une flexibilité totale en termes d'horaires et le confort du travail à domicile ?
Avec une rémunération compétitive et garantie, cette opportunité pourrait être parfaite pour vous.
Rejoignez E-Moderators en tant que Modérateur/Modératrice de Chat et profitez du travail à distance selon vos propres conditions.
 
Votre rôle :
• Surveiller les conversations dans des salons de discussion en ligne afin de garantir un environnement respectueux et accueillant.
• Identifier, gérer et signaler les messages hors sujet ou inappropriés.
 
Ce que nous offrons :
• Horaires flexibles avec des options à temps partiel et à temps plein.
• Formation gratuite et un soutien continu pour vous aider à réussir.
• Rémunération hebdomadaire compétitive et garantie.
 
Exigences :
• Maîtrise du français de niveau natif et solide connaissance culturelle de la France, du Canada, et de la Belgique.
• Être en âge légal de travailler.
• Un ordinateur fiable et une connexion Internet stable.
• De solides compétences en communication et un haut niveau d'empathie.
 
Vous souhaitez rejoindre notre équipe ?

This job is with out partner Micro1.
 
Job Summary: In this role, you'll apply your expertise to help train next-generation AI systems. Your work will shape how models learn, reason, and perform through high-quality, real-world input. No prior experience in AI is required — your domain knowledge is what matters.
 
Key Responsibilities:
Analyze and evaluate accounting data, audit processes, and financial documentation to ensure compliance and accuracy for AI training purposes.
Review and interpret complex financial statements, reports, and office workflows to provide expert insights into best practices and process improvements.
Utilize software tools such as Access, Visio, Power BI, and MS Project to model, visualize, and communicate intricate accounting and audit scenarios.
Deliver high-quality written and verbal feedback on data inputs, financial procedures, and office scenarios to facilitate effective AI learning.
Collaborate with a multidisciplinary remote team to validate financial data, clarify audit standards, and support the development of robust training materials.
Identify gaps in data or processes and propose solutions to optimize both human and AI understanding of accounting and auditing principles.
Document detailed workflows, audit trails, and accounting methodologies for reference and knowledge sharing.
 
Required Skills and Qualifications:
Expert knowledge and hands-on experience in accounting and audit office functions.
Familiarity with tools such as Access, Visio, Power BI, and MS Project is nice to have.
Exceptional written and verbal communication skills, with a strong attention to detail.
Demonstrated ability to analyze, document, and explain complex financial and audit processes.
Strong organizational skills, able to manage multiple priorities in a remote, collaborative environment.
Experience working with cross-functional teams and providing actionable feedback.
Commitment to high standards of data accuracy, integrity, and confidentiality.

About the Role
We are building a next-generation Web3 social platform designed to redefine how digital communities connect, collaborate, and grow.
Backed by years of experience within the cryptocurrency, blockchain, and digital asset ecosystem, our team has developed deep insights into how founders, developers, investors, creators, and communities interact. This understanding inspired us to create a platform that goes beyond financial applications and focuses on empowering meaningful social engagement.
Our mission is to build a transparent, community-driven social network where users can share ideas, collaborate on projects, discover opportunities, and create lasting relationships. We believe the next evolution of social media will be powered by decentralized technologies while maintaining an exceptional user experience, simplicity, and long-term sustainability.
We are seeking an experienced Chief Technology Officer (CTO) or Senior Full-Stack Developer who is passionate about Web3 and capable of leading the technical vision, architecture, and execution of our platform from the ground up.
Responsibilities
Lead the technical strategy and product architecture.
Design and build scalable backend systems and modern frontend applications.
Develop high-performance APIs and real-time features.
Integrate blockchain technologies, wallets, and Web3 authentication where appropriate.
Build secure, reliable, and maintainable infrastructure.
Collaborate closely with product, design, and leadership teams.
Establish engineering best practices, code quality standards, and development workflows.
Mentor engineers and help grow the technical organization.
Evaluate emerging technologies and implement solutions that improve scalability, security, and user experience.
Requirements
5+ years of professional software development experience.
Strong experience with modern JavaScript/TypeScript ecosystems.
Experience with React, Next.js, Node.js, or similar technologies.
Solid understanding of system architecture, cloud infrastructure, databases, and API design.
Experience building scalable consumer-facing products.
Familiarity with blockchain technologies, Web3 infrastructure, wallets, smart contracts, or decentralized applications.
Strong knowledge of security best practices and application performance optimization.
Excellent problem-solving and communication skills.
Ability to work independently in a fast-paced startup environment.
Preferred Qualifications
Experience building Web3 or crypto products.
Understanding of decentralized identity, token ecosystems, or on-chain social applications.
Experience leading engineering teams or serving in a technical leadership role.
Background in DevOps, CI/CD, Docker, Kubernetes, or cloud platforms such as AWS or GCP.
Experience with real-time messaging, social platforms, or community products.
What We Offer
Competitive full-time compensation.
Opportunity to build a product from an early stage with significant technical ownership.
Flexible and remote-friendly work environment.
Collaborative team focused on innovation and long-term impact.
Work on cutting-edge Web3 technologies and help shape the future of digital communities.
Opportunity for career growth and leadership as the platform scales.
If you are excited about building the next generation of Web3 social experiences and want to make a meaningful impact from the earliest stages, we'd love to hear from you.