I've spent 12+ years building Python backend systems for fintech, e-commerce, and high-transaction platforms, turning ambiguous business problems into reliable production services.
At Leantech, I implemented a billing system that brought 85% of client accounts onto the platform and built Celery-based invoicing integrations with retries and webhook callbacks. I also automated twice-monthly salary and rate increases through multi-role approvals and migrated four legacy platforms onto a maintainable Django architecture.
I've improved data integrity and PostgreSQL performance at Lenio Labs, helped move Crehana's Django monolith toward microservices, and built GraphQL APIs for learning-platform features. At Mo Technologies, I delivered microservices supporting micro-credit products and integrated AWS SQS/S3 with credit-core messaging services.
Earlier, I built async backend services and transactional messaging integrations at Aimo Peru, and developed IZIPAY's e-commerce platform, CRM, payment gateway integrations, and financial reporting modules at Wunderman Thompson.
