Nodejs + Web3 Developers (3+ years)

Company Description

MarsDevs is a remote-first, offshore digital product development company, committed to delivering high-quality code and long-lasting technical architectures. We specialize in building MVPs, mobile and web applications, and SaaS products for startups and SMBs. Our services include systematic project analysis, UI/UX design, technical consulting, application deployment, and ongoing support. Based in India, MarsDevs has successfully delivered over 60 solutions across 10 countries and 12 industry verticals in the last four years.

...............................Only Apply If you are available for a contractual role...........................................

About the Role:

We are looking for a skilled Backend Developer with strong Node.js and Web3 experience to help build and scale our blockchain-based applications. You will work closely with our product and frontend teams to create secure, high-performance services that power real-world crypto solutions.

Key Responsibilities:

• Develop and maintain backend services using Node.js.
• Integrate Web3 functionalities such as crypto wallets, transactions, and payment utilities.
• Design and implement secure APIs and microservices.
• Collaborate with cross-functional teams to deliver scalable features.
• Ensure cloud deployments follow best practices for security and performance.
• Quickly adapt to new blockchain integrations and evolving crypto workflows.

Requirements:

• 4+ years of backend development experience with Node.js (Python or Go is a plus).
• Hands-on experience with crypto wallets (create, deposit, withdraw, transfer, transaction history).
• Understanding of blockchain utilities, smart contract interactions, and crypto payment services.
• Strong knowledge of RESTful APIs, microservices, and cloud deployment (AWS/GCP/Azure).
• Fast learner, problem solver, and adaptable to Web3-specific requirements.

Nice to Have:

• Experience with HD (Hierarchical Deterministic) wallets.
• Prior work in Web3, DeFi, or blockchain-based products.

What We Offer:

• Work on innovative Web3 projects at scale.
• Ownership of backend systems and architecture.
• Flexible and collaborative work culture.
• Opportunity to build real-world crypto solutions used by global users.