Senior Full-Stack Engineer, AI-Driven Fintech Platform

Félix; Ciudad de México; Hybrid; MXN 900,000 - 1,300,000; Full time

Benefits offered by this job

Stock options

Annual bonus

Health plan

Remote work

Unlimited PTO

Parental leave

Growth opportunities

Job summary

Félix is building a conversational-first financial platform for Latinos in the US, with a remote-first engineering team. You will shape core chat-driven technology, integrate with WhatsApp and web/mobile UIs, and own robust backend microservices. Bring 5+ years of software engineering, a passion for fintech, and a drive to deliver real-world impact.

This role is remote, with growth across platforms. You will design scalable backend systems, collaborate with product and UX, and mentor junior

Qualifications

• 5+ years of software engineering experience in a fast-paced environment.
• Proven ability to build, ship, and iterate on software applications with an emphasis on real-world impact.
• Strong foundation in algorithms and data structures.
• Experience with web services, including SOAP and REST APIs.
• Familiarity with architectural patterns like Hexagonal Architecture, Event Driven Architecture, A/B Testing, Feature Flags, and Gradual Rollouts.
• Familiarity with AI tools such as Claude, Cursor, Codex or similar technologies.
• Fluent or Advanced English.

Responsibilities

• Design & Architecture: Architect and implement high-performance, scalable backend microservices, including core components of our Chat Platform.
• User Interfaces: Build, deploy, and iterate on UI services and conversational interfaces that empower users to interact naturally with our remittance services.
• Infrastructure: Design and manage infrastructure capable of handling millions of daily requests with real-time messaging capabilities.
• Cloud Integration: Develop backend services using established industry standards and Google Cloud services.
• Collaboration & Mentorship: Foster the growth of junior developers through mentorship and best practice implementation, while collaborating closely with cross-functional teams including product, UX/UI, and business units.
• Continuous Improvement: Leverage customer feedback and analytics to iterate and improve our conversational experience, ensuring that our chatbots remain effective and user-friendly.

Skills

5+ years experience

English proficiency

Algorithms & DS

Collaboration

Fintech interest

Tools

Python

Flask/FastAPI

REST APIs

gRPC

Redis

SQL

React

React Native

Google Cloud

Kubernetes

Terraform

NewRelic

PagerDuty

Job description

Félix is building a conversational-first financial platform for Latinos in the US, with a remote-first engineering team. You will shape core chat-driven technology, integrate with WhatsApp and web/mobile UIs, and own robust backend microservices. Bring 5+ years of software engineering, a passion for fintech, and a drive to deliver real-world impact.

This role is remote, with growth across platforms. You will design scalable backend systems, collaborate with product and UX, and mentor junior