I will develop a secure fintech backend with node js

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Lexicon
develop a secure fintech backend with node js
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develop a secure fintech backend with node js
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About this gig

Need a secure and scalable backend for your fintech or payment application?

I specialize in developing high-performance fintech backends using Node.js, Express.js, and MongoDB. I have hands-on experience building wallet systems, payment infrastructures, transaction APIs, virtual card platforms, and financial applications focused on scalability, reliability, and security.

Whether you need a payment API, wallet backend, transaction processing system, authentication flow, or third-party payment integration, I can help you build a clean and production-ready solution.

What I can build:

Fintech Backend APIs

Wallet & Transaction Systems

Payment Gateway Integrations

Authentication & Security Systems

REST APIs with Node.js

MongoDB Database Architecture

Real-time Transaction Processing

Crypto & Stablecoin Integrations

Cloud Deployment & Backend Setup

Why work with me?

Real fintech development experience

Clean and scalable architecture

Secure coding practices

Fast communication and support

Reliable and maintainable codebase

Tech Stack:

Node.js, Express.js, MongoDB, REST APIs, AWS, React Native Backend Support.

Please send a message before placing an order so we can discuss your project

  • Expertise

    • Algorithms & Data structures
    • Performance
    • Security
    • Operating systems
    • Source control

  • Programming language

    • JavaScript

  • Frontend framework

    • React.js
    • Tailwind CSS

  • Backend framework

    • Express.js
    • NestJS
    • Node.js

Get to know Lexicon

Lexicon

Software Engineer

  • FromNigeria
  • Member sinceMay 2021
  • Avg. response time1 hour

  • Languages

    English
I am a Full-Stack Software Engineer and Technical Founder with over half a decade of experience designing and building scalable applications, cloud-native infrastructures, and secure fintech solutions. I specialize in developing robust backends, intuitive frontends, and blockchain-integrated payment systems that solve real-world problems at scale. My expertise spans modern technologies, including React, Node.js/Express, Go, AWS, Docker, and blockchain platforms such as Lisk. I’m passionate about building systems that are high-performing, user-friendly, resilient, secure, and future-proof.

My Portfolio

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