Senior Full Stack Software Engineer

About the role

Félix is looking for a senior full‑stack engineer to help build a chat‑driven financial platform that serves Latino immigrants in the US. You will work on high‑volume transaction processing and conversational interfaces across web, mobile and messaging channels.

Key responsibilities

• Architect and implement scalable backend microservices for the core chat platform, using Python, Flask/FastAPI and Google Cloud services.
• Design, build and iterate on user‑facing interfaces (React web, React Native mobile) and conversational experiences for WhatsApp, web and mobile apps.
• Manage cloud infrastructure (Kubernetes, Terraform, monitoring tools) to support millions of daily requests with real‑time messaging.
• Mentor junior developers and collaborate with product, UX/UI and business teams.

Required profile

• 5+ years of software engineering experience in fast‑paced environments.
• Strong foundation in algorithms, data structures and API design (REST, SOAP, gRPC).
• Experience with architectural patterns such as Hexagonal, Event‑Driven, A/B testing and feature flags.
• Fluent or advanced English and a passion for building products that impact millions.

Required skills

• Python, Flask, FastAPI, Redis, SQL, gRPC
• React, JavaScript, HTML, CSS, AJAX
• React Native
• Google Cloud (Firestore, Cloud Storage, Pub/Sub, Cloud Run, BigQuery, Cloud Composer)
• Kubernetes, Terraform, NewRelic, PagerDuty
• AI tooling (Claude, Cursor, Codex or similar)

What we offer

• Competitive salary and annual performance bonus
• Initial stock options grant
• Health, dental and vision plans
• Fully remote work now, with future hybrid option
• Unlimited PTO, paid parental leave and continuous learning opportunities