Agile Engine is an Inc. 5000 company that creates award-winning software for Fortune 500 brands and trailblazing startups across 17+ industries. We rank among the leaders in areas like application development and AI/ML, and our people-first culture has earned us multiple Best Place to Work awards.
WHY JOIN US If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you!
ABOUT THE ROLE As a
Senior Full Stack Engineer , you will build and integrate a cutting-edge financial intelligence platform designed for AI-driven insights, connecting complex backend systems with intuitive, data-rich user experiences. Working across Python, Node.js, React, and cloud integrations, you’ll transform raw billing data into actionable metrics while leveraging AI-first development workflows to accelerate delivery. This role offers high ownership, close collaboration with product leadership, and the opportunity to shape a fast-evolving, data-intensive product from the ground up.
WHAT YOU WILL DO - Own implementation and integration of product components including dashboards and insights; - Design and build backend functionality for billing rules, chargeback logic, and ROI calculations; - Integrate external billing data sources; - Build and evolve APIs and data pipelines to transform raw billing data into financial insights; - Implement frontend functionality for dashboards and data-heavy UI views; - Make architectural decisions prioritizing maintainability and speed; - Collaborate with product stakeholders with minimal process overhead; - Ensure smooth deployment workflows; - Contribute to product cohesion across different components; - Design and optimize AI-driven development workflows; - Improve prompt strategies and validation workflows; - Leverage AI agents to automate development and testing; - Ensure data integrity, auditability, and financial accuracy; - Identify and address technical gaps and reliability risks.
MUST HAVES -
6+ years of experience
with a full-stack background; - Strong experience with
Python
and
Node.js ; - Experience with
Postgre SQL
schema design and data modeling; - Experience integrating
Azure
billing systems or similar APIs; - Experience building frontend applications with
React ; - Experience using
AI tools
such as Claude or GPT; - Experience integrating third-party APIs, especially billing systems; - Ability to work with incomplete requirements and deliver solutions; - Experience working in early-stage product environments; - Experience integrating frontend tests into CI/CD pipelines; - Familiarity with observability and telemetry systems; - Upper-intermediate English level.
NICE TO HAVES - Experience building or consuming SDKs; - Experience with PHP; - Experience building financial or billing systems; - Familiarity with AI usage metrics or ROI tracking models; - Experience working with dashboards and data-heavy UI patterns; - Startup or founder-led product experience; - Exposure to AI tooling workflows.
PERKS AND BENEFITS -
Professional growth:
Mentorship, Tech Talks, and personalized growth roadmaps. -
Competitive compensation:
USD-based pay with education, fitness, and team activity budgets. -
Exciting projects:
Modern solutions with Fortune 500 and top product companies. -
Flextime:
Adaptable schedule with remote and office options.

📌 Full stack engineer (senior) id55910 (León)
🏢 Agileengine
📍 León