1033 - Backend Developer (Python) · Sr · Remote · Latam

Darwoft; Buenos Aires; Remote; ARS 136,430,000 - 197,065,000; Full time

Benefits offered by this job

Contractor agreement in USD

100% remote work

Argentina holidays

English classes

Referral program

Learning platforms access

Job summary

Darwoft seeks a Senior Software Engineer for its Payouts Platform (Python). This 100% remote LATAM role focuses on backend microservices that securely process payments for a US fintech, handling millions of daily requests with high reliability.

You will design scalable architectures, work with cloud services, and mentor peers. The ideal candidate has 5+ years in fast-paced environments, strong Python backend skills, and experience with REST, security/compliance, and distributed systems.

Qualifications

• 5+ years of Software Engineer experience in fast-paced environments (Fintech preferred).
• Proven track record shipping production software, ideally Fintech.
• Strong backend development with Python as primary language.
• Experience designing web services and REST APIs.
• Solid foundation in algorithms and data structures.
• Knowledge of Hexagonal and Event-Driven architectures.
• Familiarity with A/B Testing, Feature Flags, and Gradual Rollouts.
• Knowledge of security, compliance, and KYC/AML processes.
• Fluent or advanced English.

Responsibilities

• Design and implement robust backend services for secure, timely fund disbursement.
• Build, optimize, and scale microservices supporting payments, compliance, and disbursement workflows.
• Design and manage infrastructure to handle millions of daily requests with high security and performance.
• Build distributed systems using Google Cloud services and industry-standard tools.
• Collaborate with product, operations, compliance, and other units to deliver end-to-end financial solutions.
• Mentor junior developers and promote engineering best practices.
• Leverage feedback and analytics to continuously refine platform capabilities.

Skills

Python

REST APIs

Algorithms

Data structures

Hexagonal Architecture

Event-Driven Architecture

A/B Testing

Feature Flags

Gradual Rollouts

Security & Compliance

English

Tools

Flask

FastAPI

Redis

SQL databases

Google Cloud Platform

Kubernetes

Terraform

New Relic

Job description

Disclaimer – Must read: Commitment & Focus
This role requires full-time dedication, with clear priority given to Darwoft projects during the established working hours. It is not compatible with other full-time professional engagements. Any additional professional activities must be disclosed in advance and must not interfere with the responsibilities or working hours of this role.

About Darwoft

Darwoft is a software factory that builds custom software solutions and provides IT staff augmentation services for international clients, mainly in the United States and Latin America. We partner with startups and fast-growing companies to build high-impact digital products.

Our culture is people-first, focused on technical quality, long-term relationships, and a collaborative mindset. We combine technical excellence with a human, close-knit approach.

Senior Software Engineer – Payouts Platform (Python) | Contractor | LATAM

General Information

• Location: 100% Remote – LATAM
• Contract Type: Contractor, full-time
• Industry / Project: Fintech – Cross-border payments and remittances platform for a US-based, hyper-growth Series C company
• English Level: B2/C1

About the Role

You will join the Payouts squad of a US fintech company building an AI-powered, conversational-first financial platform for the Latino community in the United States. The company combines real-time financial infrastructure with AI and crypto rails to make cross-border money movement fast and affordable, and is expanding into credit, savings, and wallet services.

As a Senior Software Engineer, you will help shape the core architecture of the platform. Your focus will be the backend microservices that ensure funds reach beneficiaries securely and on time, at a scale of millions of daily requests. This is a high-ownership role with direct impact on a product that serves a community historically underserved by traditional finance, working alongside product, operations, and compliance teams.

Responsibilities

• Design and implement robust backend services to handle the secure and timely disbursement of funds to beneficiaries.
• Build, optimize, and scale microservices that support complex payment, compliance, and disbursement workflows.
• Design and manage infrastructure capable of handling millions of daily requests while maintaining high standards of security and performance.
• Build and maintain distributed systems using Google Cloud services and industry-standard tools.
• Collaborate with product, operations, compliance, and other business units to deliver end-to-end financial solutions.
• Mentor junior developers and promote engineering best practices across the team.
• Use user feedback and system analytics to continuously refine and improve platform capabilities.

Requirements

Must-Have

• 5+ years of experience as a Software Engineer in fast-paced, dynamic environments.
• Proven track record of building, shipping, and iterating on production software, ideally in the Fintech domain.
• Strong backend development experience, with Python as the primary language of the team.
• Experience designing and implementing web services, including REST APIs.
• Solid foundation in algorithms and data structures.
• Familiarity with architectural patterns such as Hexagonal Architecture and Event-Driven Architecture.
• Familiarity with practices such as A/B Testing, Feature Flags, and Gradual Rollouts.
• Knowledge of security protocols, compliance standards, and KYC/AML processes.
• Fluent or advanced English.
• Strong collaboration and prioritization skills in a team-oriented environment.

Nice-to-Have

• Hands-on experience building and maintaining payment systems, financial disbursement solutions, or compliance-driven platforms.
• Experience with Flask and/or FastAPI.
• Experience with Redis and SQL databases.
• Experience with Google Cloud Platform (Firestore, Cloud Storage, Pub/Sub, Artifact Registry, Cloud Run, BigQuery).
• Experience with Kubernetes, Terraform, and New Relic.
• Previous experience or genuine interest in Fintech.

What Darwoft Offers

• Contractor agreement with payment in USD
• 100% remote work
• Argentina's public holidays
• English classes
• Referral program
• Access to learning platforms

Explore this and other opportunities at:

www.darwoft.com/careers