Weekday AI is hiring a

FullStack Engineer - Blockchain

This role is for one of the Weekday's clients

Min Experience: 3 years

Location: Remote (India)

JobType: full-time

We are seeking an exceptional Full Stack Engineer (Blockchain) to join our innovative, cross-functional team. You’ll work at the intersection of blockchain, full-stack development, and modern DevOps, contributing to cutting-edge decentralized applications and blockchain-based solutions.

Key Responsibilities

• Participate in software design discussions and contribute to architecture diagrams, API specifications, and technical blueprints.
• Develop and maintain full-stack applications using JavaScript, TypeScript, Node.js, and modern frameworks for both frontend and backend systems.
• Design, build, and deploy smart contracts on Ethereum and other blockchain networks.
• Integrate crypto payment gateways and blockchain APIs into existing systems.
• Manage deployment pipelines using DevOps tools such as Docker, Kubernetes, GitLab, Jenkins, and GitHub.
• Implement and optimize blockchain protocols including Ethereum, Bitcoin, and side-chains.
• Ensure strong security and cryptographic standards across all blockchain operations, including key management, encryption, and data protection.
• Build and maintain REST APIs and real-time applications using frameworks such as React.js, Vue.js, Node.js, and messaging systems like Redis and RabbitMQ.
• Create responsive, dynamic user interfaces with Bootstrap, CSS3, AJAX, and jQuery.
• Write and maintain comprehensive technical documentation, including design, implementation, and deployment guides.
• Collaborate with product managers, blockchain architects, and external partners to design POCs (Proof of Concepts) and MVPs (Minimum Viable Products).
• Provide mentorship and technical guidance to team members and support ongoing product maintenance.
• Participate in client discussions and product demonstrations when required.

Required Experience & Skills

• Strong experience in smart contract development on Ethereum.
• Proficiency in TypeScript, Node.js, and experience with Ethereum or Bitcoin; exposure to other blockchain ecosystems is a plus.
• Hands-on experience with crypto payment gateway integrations.
• Familiarity with DevOps tools and CI/CD pipelines (Docker, Kubernetes, GitLab, Jenkins).
• Deep understanding of distributed ledger technologies, consensus algorithms, and cryptographic principles.
• Solid knowledge of blockchain data structures, security design patterns, and HSM-based key management.
• Proven experience in REST API development and modern JavaScript frameworks (React.js, Vue.js).
• Strong understanding of web technologies including Bootstrap, AJAX, and jQuery.
• Excellent problem-solving and collaboration skills, with the ability to work in fast-paced environments.

Preferred Qualifications

• Bachelor’s Degree in Computer Science, Engineering, or a related field.
• Experience contributing to open-source blockchain projects.
• Strong understanding of cryptographic security, distributed systems, and cloud-native deployments.
• Prior experience testing or developing blockchain-based products or decentralized systems.

Skills: Blockchain Development, Smart Contracts (Ethereum), TypeScript, Node.js, React.js, Crypto Payment Integration, DevOps (Docker, Kubernetes, Jenkins), REST API Development, Cryptography, Distributed Ledger Technology

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