Java Software Engineer (web3)

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...........................................

Key Responsibilities

• Build, maintain, and scale backend services powering our AI Signals platform.
• Integrate Web3 functionality including wallet creation, crypto transactions, and payment utilities.
• Work closely with product and frontend teams to deliver secure, efficient, and reliable solutions.
• Quickly adapt to project needs and ramp up on wallet integrations where required.

Requirements

• 4+ years of backend development experience (Python, Node.js, or Go preferred).
• Hands-on experience with crypto wallets (creating, depositing, withdrawing, transactions).
• Familiarity with blockchain utilities and crypto service payments.
• Strong knowledge of APIs, microservices, and cloud deployment environments.
• Ability to learn fast and adapt to Web3-specific requirements.

Nice to Have

• Experience building or integrating HD wallets.
• Prior work in Web3, DeFi, or blockchain-based applications.

What We Offer

• Opportunity to work at the intersection of AI and Web3.

• Ownership of backend systems that directly power innovative crypto solutions.

• Flexible and collaborative work environment.