Senior Blockchain Developer

About the Role: We are seeking a highly skilled Senior Blockchain Developer with strong expertise in digital assets, crypto trading systems, and custodial infrastructure. The ideal candidate will play a critical role in designing and building secure, scalable blockchain solutions, including wallet architecture, trading integrations, and asset management systems. This role also involves contributing to system architecture, security frameworks, and high-performance transaction processing.Key Responsibilities & Technical Skills: Design and develop blockchain-based applications for crypto trading platformsBuild and manage digital asset infrastructure, including wallets, transaction flows, and asset lifecycle managementDevelop, test, and deploy secure smart contracts on networks such as Ethereum, BNB Chain, Polygon, or similarDesign and implement custodial and non-custodial wallet systemsWork on crypto custody solutions, including hot wallets, cold wallets, and multi-signature (multi-sig) setupsEnsure secure storage, transfer, and management of digital assetsIntegrate blockchain components with trading engines, backend services, and APIsOptimize transaction throughput, gas efficiency, and network performanceImplement robust security practices to prevent vulnerabilities, exploits, and fraud risksCollaborate with backend, DevOps, security, and product teams for end-to-end deliveryAdditional Responsibilities (Enhanced): Architect scalable blockchain infrastructure and microservices-based systemsImplement monitoring, alerting, and logging for blockchain transactions and wallet operationsConduct smart contract testing, auditing support, and vulnerability assessmentsDevelop automated tools for transaction tracking, reconciliation, and reportingContribute to protocol integrations (DEXs, DeFi platforms, liquidity pools)Mentor junior developers and participate in code reviews and technical decision-makingEnhanced Tech Stack (Added): Blockchain & Smart Contracts: Solidity, Rust, VyperPlatforms: Ethereum, Polygon, BNB Chain, Avalanche, Layer 2 solutions (Arbitrum, Optimism)Web3 Libraries: Web3.js, Ethers.jsBackend: Node.js, Python, GoDatabases: PostgreSQL, MongoDB, RedisSecurity: MPC (Multi-Party Computation), HSM, Key Vaults, encryption protocolsDevOps & Tools: Docker, Kubernetes, CI/CD pipelines (GitHub Actions, Jenkins)Cloud Platforms: AWS, Azure, GCPRequired Skills & Qualifications: 6+ years of experience in blockchain developmentStrong experience with digital assets, crypto wallets, and custody solutionsHands-on experience with custodian systems and secure asset managementProficiency in Solidity, Rust, or Vyper for smart contract developmentExperience with major blockchain networks (Ethereum, Polygon, BSC, etc.)Strong understanding of private key management, MPC, and HSM-based securityExperience building wallet services, transaction systems, and blockchain integrationsDeep knowledge of cryptography, consensus mechanisms, and decentralized systemsStrong backend development experience (Node.js, Python, or Go)Familiarity with REST APIs, microservices, and distributed systemsProficiency with Git and version control systemsPreferred Qualifications (Enhanced): Experience working with crypto exchanges, custodians, or fintech platformsKnowledge of institutional-grade custody and compliance frameworksExperience in smart contract auditing and blockchain security practicesUnderstanding of DeFi protocols, liquidity mechanisms, and trading systemsFamiliarity with Layer 2 scaling solutions and cross-chain bridgesExposure to real-time trading engines and order matching systemsExperience with cloud infrastructure and high-availability systemsKey Competencies: Strong analytical and problem-solving skillsHigh attention to security and detailAbility to work in a fast-paced, high-stakes environmentStrong collaboration and communication skillsOwnership mindset and accountabilityJob Types: Full-time, Permanent Compensation: 25,000.00 - 40,000.00 per month Benefits: Paid sick timePaid time offProvident FundWork Location: In person About the Role: We are seeking a highly skilled Senior Blockchain Developer with strong expertise in digital assets, crypto trading systems, and custodial infrastructure. The ideal candidate will play a critical role in designing and building secure, scalable blockchain solutions, including wallet architecture, trading integrations, and asset management systems. This role also involves contributing to system architecture, security frameworks, and high-performance transaction processing.Key Responsibilities & Technical Skills: Design and develop blockchain-based applications for crypto trading platformsBuild and manage digital asset infrastructure, including wallets, transaction flows, and asset lifecycle managementDevelop, test, and deploy secure smart contracts on networks such as Ethereum, BNB Chain, Polygon, or similarDesign and implement custodial and non-custodial wallet systemsWork on crypt