Full-Stack Developer

VELZI.AI LIMITED; United States; Remote; Confidential; Full time

Job summary

A leading fintech startup is seeking a Full-Stack Developer to drive the next generation of AI-powered financial solutions. You'll work remotely while collaborating with cross-functional teams to develop scalable applications that streamline complex financial workflows, using modern technologies like React and Node.js.

Benefits

Remote-first & flexible

Cutting-edge tech

Rapid growth

Collaborative culture

Competitive salary & equity

Career advancement

Qualifications

• Relevant work experience and completed technical education.
• Strong foundation in JavaScript, Node.js, and Python.
• Proven ability to build responsive UIs and translate Figma into front-end code.

Responsibilities

• Build fast, responsive UIs with React, Next.js, and JavaScript.
• Develop server-side logic with Node.js and Python.
• Design and consume both private and public APIs.

Skills

JavaScript

Node.js

Python

API architecture

Responsive design

Figma

Cloud functions

Firebase

MongoDB

Agile methodology

Education

Completed technical education

Job description

Location: Remote | Type: Full-time | Compensation: Competitive salary + stock options

About VELZI AI

At VELZI AI, we’re redefining finance for the modern business. Our mission is to eliminate manual accounting through cutting-edge AI automation. From procurement to financial reporting, our intelligent SaaS platform streamlines every step—so companies can focus on growth, not spreadsheets.

We’re a fast-growing, AI-driven fintech startup backed by innovation and a clear vision. Now, we're looking for a Full-Stack Developer to help bring this vision to life.

About the Role

As a Full-Stack Developer at Velzi AI, you’ll work across the stack to create powerful, scalable web applications that delight users and simplify complex financial workflows. You’ll collaborate closely with our engineering, product, and design teams to push the boundaries of what’s possible with fintech and AI.

Tasks

What You’ll Do

Frontend Development

• Build fast, responsive UIs with React, Next.js, JavaScript, HTML, and CSS
• Convert Figma designs into clean, accessible, pixel-perfect components
• Optimize for speed, security, and performance

Backend & Middleware

• Develop server-side logic with Node.js and Python
• Build and scale RESTful APIs, handle secure integrations, and manage system performance
• Work with both Firebase Authentication and MongoDB, optimizing data flow and structure
• Understand and apply concepts from both RDBMS and NoSQL systems

API & System Integration

• Design and consume both private and public APIs
• Troubleshoot integration issues and ensure secure, efficient communication between services
• Bonus: Experience with third-party OAuth (Google, Microsoft, etc.)

UI/UX Implementation

• Transform UI/UX designs into intuitive, high-performing interfaces
• Ensure accessibility and responsive design across devices

Collaboration & Code Quality

• Work within an Agile team environment using SOLID principles and best practices
• Conduct code reviews, share learnings, and mentor junior developers
• Collaborate cross-functionally with product, design, and other engineering team members

Requirements

What We’re Looking For

• Relevant work experience and completed technical education
• Strong foundation in JavaScript, Node.js, and Python
• Experience building cloud functions, managing authentication, and optimizing performance
• Proven ability to build responsive UIs and translate Figma into front-end code
• Solid understanding of API architecture and integration
• Comfort working with Firebase, MongoDB, and cloud-native tools
• Bonus: Experience with AI models, LLMs, prompt engineering, RAG, and vector databases
• You’re a versatile professional—comfortable working across different stacks and tools
• You’re a problem-solver who thrives in ambiguity and loves building from 0 to 1
• You’re a self-starter who enjoys ownership but also thrives in a collaborative, feedback-driven team

Benefits

Why Join VELZI AI?

• Remote-first & flexible – Work from wherever you do your best work
• Cutting-edge tech – Work with AI, automation, and the latest dev tools
• Rapid growth – Be part of an early-stage rocket ship
• Collaborative culture – Join a team that values innovation, autonomy, and teamwork
• Competitive salary & equity – Get well-compensated with generous stock options
• Career advancement – As we scale, so do your opportunities

How to Apply

Ready to build the future of finance?
Click “Apply” and let’s start building AI-powered financial automation together.

Join VELZI AI. Automate boldly. Build brilliantly.