Senior Backend Engineer (Stripe & Fintech Specialist)

About Mindtech

Mindtech is your gateway to exciting, impactful technology projects. We specialize in staff augmentation and end-to-end software outsourcing, connecting top Latin American talent with global opportunities. Our agile approach ensures exceptional service and innovative solutions for our clients.

Senior Backend Engineer (Stripe & Fintech Specialist)

Role Overview

We´re seeking a Senior Backend Engineer with deep expertise in Stripe Connect to lead the evolution of our clients payment infrastructure. You will be responsible for architecting and implementing a robust Stripe Connect integration within a core Django API, facilitating a critical migration from a legacy Ruby on Rails payment portal.

As the lead for this initiative, you will handle the end-to-end payment lifecycle—from onboarding and funds flow to complex webhook orchestration and business logic—ensuring a seamless experience for our marketplace users.

Core Responsibilities

• Stripe Connect Implementation: Architect and build the Stripe Connect integration (Standard, Express, or Custom) within a Django/Python environment.

• Payment Orchestration: Design and implement complex payment flows, including split payments, payouts, and fee collection.

• Webhook Architecture: Build a resilient, idempotent webhook processing system to legacy Ruby on Rails Payment Portal into the core Django API.

• Businesses handle real-time events from Stripe.

• Legacy Migration: Collaborate with the team to migrate payment logic and data from a Logic Integration: Integrate Stripe events with core business processes (auctions, bidding, and user management).

• Asynchronous Processing: Utilize Celery and Redis to manage high-volume, time-sensitive payment tasks and background jobs.

• Security & Compliance: Ensure all payment workflows adhere to PCI-DSS standards and best practices for financial data security.

• Monitoring & Observability: Build and maintain monitoring, alerting, and logging infrastructure for payment flows (Datadog, Sentry or similar).

• Exhaustive Testing: Write comprehensive unit and integration tests, maintain high test coverage.

Technical Stack

• Backend: Python 3.11+, Django 4.x, Django REST Framework (DRF)

• Payments: Stripe (Connect, Billing, Webhooks)

• Task Queue: Celery, Redis, RabbitMQ (Amazon MQ)

• Database: PostgreSQL (Aurora Serverless v2)

• Infrastructure: AWS (ECS Fargate, ElastiCache)

Required Qualifications

• 5+ years of professional backend development experience.

• Proven track record of implementing Stripe Connect at scale (experience with marketplace or platform models is essential).

• Expert-level Python & Django skills, specifically building scalable APIs and handling complex database migrations.

• Advanced Webhook Management: Experience building robust systems for handling, retrying, and auditing webhooks.

• Asynchronous Expertise: Deep experience with Celery and Redis for handling long-running or mission-critical tasks.

• Architectural Mindset: Ability to design systems that are modular, testable, and maintainable.

Preferred Qualifications

• Ruby on Rails Knowledge: Ability to read and understand legacy Ruby code to facilitate a smoother migration to Django.

• Fintech Experience: Prior experience in auctions, e-commerce, or similar high-stakes financial environments.

• AWS Proficiency: Hands-on experience with ECS Fargate and Amazon MQ.

• Frontend Awareness: Understanding of how backend payment flows interact with React Native (Expo) and Next.js frontends.

• State Machine / Workflow experience: Ability to design payment state machines or workflows

We Offer

100% remote work
Salary in USD
Referral program
Growth opportunities in a fast-scaling startup
A global, multicultural work environment