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. We are a hyper-growth Series C company, backed by over $300 million in funding from top-tier integral investors, including Andreessen Horowitz, QED, Castle Island, Switch Ventures, HTwenty, Monashees, General Catalyst Customer Value Fund. it's a testament to thetrust our investors have in our vision and our team. Additionally, Félix was selected as an "Endeavour Entrepreneur" and was a recipient of the CrossTech Fintech Startups Award.
Joining Félix means you will be part of a team building a legacy, a company that will outlive us all. You will work in one of our three squads—Payments, Disbursements, or GRC—to build, optimize, and scale the backend microservices that drive our financial operations. This is a unique opportunity for a talented engineer who is passionate about secure, high-performance financial systems and has experience in building solutions that handle complex payment, compliance,



and disbursement workflows.
Front-end: React, HTML/DOM, JavaScript, CSS, AJAX
Back-end: Python, Flask/FastAPI, REST APIs, Redis, SQL, gRPC
Cloud: Google Cloud services (Firestore, Cloud Storage, Pub/Sub, Google Artifact Registry, Cloud Run, BigQuery, Cloud Composer, etc.)
Infrastructure: Kubernetes, Terraform, NewRelic, PagerDuty
Architect and implement scalable backend microservices inside the Payments, Disbursements, or GRC squad.
Build and enhance systems for user onboarding, KYC, and compliance, ensuring adherence to regulatory standards.
Design and manage infrastructure capable of handling millions of daily requests while maintaining the highest standards of security and performance.
Cloud Integration: Utilize Google Cloud services and industry-standard tools to build and maintain distributed systems.
Mentorship & Growth: Mentor junior developers and promote best practices across the eng

📌 Software Engineer Frontend temporal (Castalla)
🏢 felix
📍 Castalla