Senior Full-Stack Engineer (Freelance)

Company Description

MileZero specializes in driving business evolution through comprehensive technology transformation, with Artificial Intelligence at its core. We are a creative-tech powerhouse focused on leveraging AI as a catalyst for innovation, efficiency, and growth. With a multidisciplinary team of strategists, creatives, and engineers, MileZero aims to redefine industry benchmarks by challenging conventional approaches and applying advanced AI solutions. Our services include AI consulting, research, prototyping, and product development, designed to transform ambitious visions into reality. Together, we build the framework for businesses to thrive in an AI-driven future.

Role Description

We are looking for a Senior Full-Stack Engineer (Freelancer) to lead the development of a FinTech data-driven platform.

Role Overview

• Lead critical projects end-to-end, from design to deployment
• Own system architecture and key technical decisions
• Collaborate closely with design, product, and customers to deliver seamless, mission-critical experiences
• Implement a full end-to-end POC (Frontend + Backend)
• Integrate external APIs and data sources

Requirements

• 5+ years of professional Full-Stack engineering experience
• Experience with a modern frontend stack (React / Vue / Angular)
• Strong backend experience (Node.js / Python / Java / .NET – flexible)
• Solid architectural thinking and system design at scale
• Proven ability to work independently and take full ownership

Work Model

• On-site work
• Freelance engagement
• Option to continue beyond the POC

This role is suited for engineers who enjoy high ownership, close collaboration, and building meaningful systems from the ground up. You will work directly with decision-makers and have a real impact on both the technical direction and the product itself.