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

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

Work arrangement
Yes