Senior Backend Engineer (Stripe & Fintech Specialist)

About MindtechMindtech 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 OverviewWe´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 ResponsibilitiesStripe 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 StackBackend: 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 Qualifications5+ 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 QualificationsRuby 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 workflowsWe Offer100% remote workSalary in USDReferral programGrowth opportunities in a fast-scaling startupA global, multicultural work environmentOriginally posted on Himalayas