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Senior Software Engineer - Chat Platform & Conversational Interfaces

Félix • Greater Rio De Janeiro
Remote
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Join Félix's Product Engineering team to architect and build the core chat-driven platform powering AI-enabled financial services for Latinos in the US. Design scalable backend microservices, develop conversational UIs across web and mobile, and manage infrastructure handling millions of daily requests. Requires 5+ years of software engineering experience with strong Python, React, and cloud infrastructure skills.

Key Highlights
Build and scale the core chat platform with AI-powered conversational interfaces for remittance and financial services
Work across backend (Python), frontend (React), and mobile (React Native) in a fully remote environment
Series C fintech backed by $300M+ from top-tier investors including Andreessen Horowitz and General Catalyst
Mentor junior developers and collaborate cross-functionally in a fast-paced, mission-driven team
Key Responsibilities
Architect and implement high-performance, scalable backend microservices for the Chat Platform
Build, deploy, and iterate on UI services and conversational interfaces for web and mobile platforms
Design and manage infrastructure capable of handling millions of daily requests with real-time messaging
Develop backend services using Google Cloud services and industry standards
Mentor junior developers and implement best practices across the engineering team
Collaborate with cross-functional teams including product, UX/UI, and business units
Leverage customer feedback and analytics to iterate and improve conversational experiences
Technical Skills Required
Python React Google Cloud
Benefits & Perks
Competitive salary
Initial stock options grant
Annual performance bonus
Health, dental, and vision plans
Fully remote work model
Unlimited PTOP
Paid parental leave
Continuous learning opportunities
Nice to Have
Experience with Fintech
Familiarity with AI tools such as Claude, Cursor, or Codex
Experience with Hexagonal Architecture, Event Driven Architecture, A/B Testing, Feature Flags, and Gradual Rollouts
Proficiency in English at an Upper-Intermediate level or higher

Job Description

At Félix, we are building the indispensable financial companion for Latinos in the US. We combine an AI-powered, conversational-first interface with real-time financial infrastructure to make cross-border money movement as easy as sending a text. Starting with fast, affordable remittances powered by AI and crypto rails, we are expanding into credit, savings, and wallet services to support the complete immigrant financial journey. Our ambition is to deliver a white-glove financial experience with the simplicity of a conversation to a community the traditional financial system has historically overlooked.
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