Senior Backend Engineer - Fintech Platform (Remote)

Félix; Buenos Aires; Remote; ARS 139,364,000 - 232,274,000; Full time

Benefits offered by this job

Stock options

Annual performance bonus

Health plan

Remote now, with hybrid in future

Unlimited PTO

Parental leave

Job summary

Félix is seeking an experienced software engineer to shape the core architecture of our Fintech Platform. You will work in one of three squads—Payments, Disbursements, or GRC—to build, optimize, and scale backend microservices that power financial operations.

The role demands deep expertise in secure, high-performance systems, REST APIs, and modern architectural patterns. You will mentor juniors and collaborate with product, compliance, and operations to deliver reliable financial solutions.

Qualifications

• 5+ years of experience as a Software Engineer in fintech or similar.
• Fluent or advanced English.
• Proven track record building secure, high-performance backend services.
• Experience with REST APIs and scalable architectures.
• Knowledge of security, KYC/AML, and compliance processes.
• Ability to mentor junior developers and collaborate cross-functionally.

Responsibilities

• Architect and implement scalable backend microservices in Payments/Disbursements/GRC.
• Design secure, high-performance services for payments and disbursement workflows.
• Lead cross-functional collaboration with product, ops, and compliance.
• Mentor junior developers and promote engineering best practices.
• Ensure infrastructure scales to millions of daily requests.

Skills

Software engineering

Fintech

Backend architecture

English proficiency

Tools

REST APIs

Hexagonal Architecture

Event-Driven Architecture

Google Cloud

Kubernetes

Terraform

NewRelic

PagerDuty

Job description

Félix is seeking an experienced software engineer to shape the core architecture of our Fintech Platform. You will work in one of three squads—Payments, Disbursements, or GRC—to build, optimize, and scale backend microservices that power financial operations.

The role demands deep expertise in secure, high-performance systems, REST APIs, and modern architectural patterns. You will mentor juniors and collaborate with product, compliance, and operations to deliver reliable financial solutions.