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Backend ( + Web3 + Java) Developer

3 weeks ago


Pune, Maharashtra, India MarsDevs Full time

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

Backend Developer + Web3 + AI)
Key Responsibilities

  • Build, maintain, and scale backend services powering our
    AI Signals platform
    .
  • Develop
    APIs and microservices
    with high performance and security.
  • Integrate
    Web3 functionality
    – wallet creation, crypto transactions, on/off-ramp payment utilities.
  • Collaborate with
    product and frontend teams
    to ship reliable and scalable features.
  • Ensure
    secure deployments
    and best practices in cloud environments.
  • Quickly adapt to new integrations and ramp up on
    crypto wallet/payment flows
    as needed.

Requirements

  • 4+ years of backend development
    , with strong hands-on experience in

    (Python or Go is a bonus).
  • Proven experience with
    crypto wallets
    (create, deposit, withdraw, transfer, transaction history).
  • Understanding of
    blockchain utilities, smart contract interaction, and crypto payment services.
  • Strong knowledge of
    RESTful APIs, microservices architecture, and cloud deployment (AWS/GCP/Azure).
  • Ability to
    learn fast, troubleshoot deeply, and adapt to Web3-specific requirements.

Nice to Have

  • Experience building or integrating
    HD (Hierarchical Deterministic) wallets.
  • Prior work in
    Web3, DeFi, or blockchain-based products.
  • Familiarity with
    AI-driven systems or data-heavy applications.

What We Offer

  • Work at the
    cutting edge of AI + Web3 innovation.
  • End-to-end ownership
    of backend systems and architecture.
  • A
    flexible, product-focused, and collaborative
    work culture.
  • Opportunity to build
    real-world crypto solutions
    used at scale.