Senior Software Engineer (Product Engineering Team)

Félix; Buenos Aires; A distancia; ARS 181.560.000 - 272.339.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Stock options

Annual bonus

Health plan

Remote work

Learning opportunities

Unlimited PTO

Parental leave

Growth opportunities

Descripción de la vacante

Félix is hiring a Software Engineer for our Product Engineering Team to shape the core technology behind our chat-driven remittance platform. You’ll design scalable backend microservices, build chatbot experiences, and integrate with Google Cloud services to support millions of daily transactions.

You should be proficient in Python, REST/SOAP APIs, and modern cloud infrastructure, with a passion for fintech and a collaborative, fast-paced environment. Join us remotely with a future hybrid setup.

Formación

• 5+ years of experience as a Software Engineer in a fast-paced environment.
• Experience building, shipping, and iterating on software with real-world impact.
• Strong foundation in algorithms and data structures.
• Experience with web services including SOAP and REST APIs.
• Familiarity with Hexagonal Architecture, EDA, A/B Testing, Feature Flags, and Gradual Rollouts.
• Conversational experience with chatbots or NLP tools is a plus.

Responsabilidades

• Design and architect high-performance, scalable backend microservices for our chat platform.
• Build and iterate on chatbot services and conversational interfaces for remittance services.
• Design and manage infrastructure to handle millions of daily requests with real-time messaging.
• Develop backend services using Google Cloud services and industry standards.
• Mentor junior developers and collaborate with product, UX/UI, and business units.
• Use analytics and customer feedback to continuously improve the conversational experience.

Conocimientos

Software engineering

English proficiency

Algorithms & data structures

Educación

Bachelor's degree in CS or related field

Herramientas

Python

Flask/FastAPI

REST APIs

SOAP

Kubernetes

Terraform

Google Cloud

Redis

gRPC

Descripción del empleo

About Us

At Félix, we're building the financial ecosystem for Latin immigrants in the U.S., starting with a revolution in remittances. Our core product is an AI-powered chatbot built on WhatsApp, allowing our users to send money home as easily as sending a text message. We leverage cutting‑edge technology like AI, blockchain, and stablecoins to make cross‑border payments faster, more affordable, and more accessible than ever before.

We are a hyper‑growth Series C company, backed by over $200 million in funding from top‑tier global investors, including QED, Castle Island, Switch Ventures, HTwenty, Monashees, and Andreessen Horowitz with support from General Catalyst Customer Value Fund. This isn't just about the numbers; it's a testament to the trust 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. We are a group of extremely talented and dedicated high‑performers, united by our shared obsession with a single goal: empowering our customers. We are all owners of Félix, driven by a bias for action and a true experimentation spirit to get things done with urgency and focus.

Joining Félix means you will be part of a team building a legacy, a company that will outlive us all. This is a rare opportunity to apply your skills to a deeply meaningful mission—serving a community that has been underserved for too long. We are a team that is fiercely loyal to each other, where radical transparency and constructive feedback are how we grow and push for excellence. We are bold, we care less about what others are doing, and more about creating sustainable value and a product that truly makes our users' lives better. We are building the future, today.

About The Role

As a key member of our engineering team, you will have a unique opportunity to shape the core technology behind our chat‑driven platform. You will work on Félix's Product Engineering Team—a sophisticated system that not only processes high volumes of transactions but also delivers conversational experiences through integrated chatbots and natural language interfaces. Your role will be crucial in designing and enhancing interactive chat services that enable seamless, intuitive user interactions on platforms like WhatsApp. If you have experience building chatbots or crafting conversational experiences, this is your chance to make a significant impact.

Technology Stack

We are technology agnostic and value candidates with diverse backgrounds. While familiarity with the following is helpful, your willingness to learn and adapt is paramount:

• 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

Responsibilities

• Design & Architecture: Architect and implement high‑performance, scalable backend microservices, including core components of our Chat Platform.
• Conversational Interfaces: Build, deploy, and iterate on chatbot 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.
• Proficiency in English at an Upper‑Intermediate level or higher is required.

Requirements

• 5+ years of experience as a Software Engineer 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.
• Conversational Experience: Demonstrated experience in building chatbots, conversational interfaces, or integrating natural language processing (NLP) tools. Familiarity with chatbot frameworks (e.g., DialogFlow, IBM Watson, Rasa) is a plus.
• Passion for building products that positively impact millions.
• Commitment to continuous learning and exploration of new technologies.
• Ability to thrive in a collaborative environment and contribute actively with innovative ideas.
• Excellent prioritization skills.
• Curiosity and/or experience in Fintech is an added advantage (though equivalent competencies will also be considered).

These are the applicable requisites, although equivalent competencies in any of the above will also be considered.

What We Offer

• Competitive salary
• Initial stock options grant
• Annual performance bonus
• Health, dental, and vision plans
• Work model: Currently fully remote, with a future transition to a hybrid setup.
• Continuous learning opportunities
• Unlimited PTO
• Paid parental leave
• Empowering opportunities for growth in a dynamic entrepreneurial environment

Equal Opportunity Employer

At Félix, we are committed to providing equal employment opportunities to all qualified employees and applicants without regard to race, religion, nationality, sex, sexual orientation, gender identity, age, or disability. This policy applies to all terms and conditions of employment, including recruitment, hiring, placement, promotion, training, compensation, benefits, and termination.

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