Backend Jobs in Web3

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Mudrex Inc.
$90k - $100k estimated
Bengaluru India

About Saber.Money

AtSaber.Money, we’re building the next-gen infrastructure forB2B crypto payments. Our robust API and embeddable SDK enable businesses to offer seamlessonramp and offrampservices — securely and with full compliance. We’re on a mission to simplify and supercharge how businesses interact with digital assets.

What You’ll Do

As a backend engineer, you’ll play a key role in designing, developing, and maintaining highly reliable services that power mission-critical crypto payment workflows. You'll help ensure the scalability, performance, and security of our APIs and SDKs used by global partners.

Key Responsibilities

  • Build and scalemicroservices in Golangto support payment workflows, ledgering, and KYC integrations.

  • Own the end-to-end development of backend services – from architecture and coding to deployment and monitoring.

  • Writeclean, testable, and efficient codewith a focus on reliability and performance.

  • Design and manageRESTful APIsandWebSocket connectionsfor real-time transaction updates.

  • Work withSQL and NoSQLdatabases to model and store financial data securely and efficiently.

  • Proactively debug production issues, optimize service performance, and uphold SLAs.

  • Contribute tocode reviews, technical discussions, and design reviews.

  • Lead or assist in breaking down high-level features and mentoring junior engineers.

  • Take ownership of service observability (monitoring, alerts, logs) andinfrastructure reliability.

What we are looking for

  • Bachelor's/Master’s in Computer Science, Engineering, or equivalent.

  • 3–7 years of experience, including technical leadership and ownership

  • Strong hands-on experience inGolangand Python.

  • Deep understanding ofmicroservice architectureanddistributed systems.

  • Familiarity withWeb3, crypto wallets, custody, or blockchain integrations (e.g., Ethereum, Solana). (bonus)

  • Experience in integrating or buildingpayment servicesis a plus.

  • Comfortable with CI/CD, Docker.

  • Passionate about writing well-tested code (unit, integration, load testing).

  • Strong communicator with the ability to work in a fast-paced, remote team.

Nice to have

  • Prior involvement infintech, payments, or crypto infrastructureproducts.

  • Knowledge ofcompliance,KYC/AML flows, ortransaction monitoring.

  • Experience of working with blockchains, RPC nodes and smart contracts.

Why join Saber.Money?

  • Work on meaningful crypto infrastructure that serves real businesses.

  • High ownership environment with a strong engineering culture.

  • Competitive compensation andequityoptions.

  • Health insurance, relocation support, and mental wellness benefits.

  • Sponsored training and learning opportunities to help you grow.

What does a back-end developer in Web3 do?

A back-end developer in web3 typically works on the server-side of a web application, using technologies that are specific to the decentralized web (also known as Web3-related)

This might involve building and maintaining the infrastructure that supports decentralized applications (dApps), or developing the underlying smart contracts and blockchain-based systems that power those dApps

In general, the goal of a back-end developer in web3 is to create the technologies and tools that enable users to interact with the decentralized web in a secure and seamless way.