Senior Full-Stack Engineer - Fintech Payments & AI Tools

ENI-ONE.LTD; Iola (IL); On-site; USD 130,000 - 170,000; Full time

Job summary

ENI-ONE.LTD in the United States (Illinois) is seeking a Senior Full-Stack Developer to join a fintech team building secure payment solutions and customer-facing products.

You will develop both backend and frontend components, ensure robust REST APIs, and contribute to architectural decisions while working closely with a collaborative, modern engineering team that embraces AI-assisted tooling.

Qualifications

• 5+ years of full-stack development experience in modern web apps.
• Strong knowledge of PHP/Laravel or equivalent backend frameworks.
• Proficient in React or Angular and RESTful API design.
• Experience with security, testing, and scalable architectures.

Responsibilities

• Develop secure payment APIs and user-facing applications.
• Build scalable backend and frontend systems.
• Investigate and resolve production issues.
• Contribute to architecture and code quality.
• Collaborate in AI-powered development tooling adoption.

Skills

PHP/Laravel

Node.js

React

Angular

REST APIs

OOP & design principles

Code reviews

Tools

AWS

Docker

CI/CD

Job description

ENI-ONE.LTD in the United States (Illinois) is seeking a Senior Full-Stack Developer to join a fintech team building secure payment solutions and customer-facing products.

You will develop both backend and frontend components, ensure robust REST APIs, and contribute to architectural decisions while working closely with a collaborative, modern engineering team that embraces AI-assisted tooling.