Esteban Hirzfeld

Senior Backend Engineer responsible for designing autonomous backend pipelines, data transformation systems, and leading production diagnostics with complete lifecycle ownership.

• • Designed and built autonomous backend pipelines and data transformation systems handling high volume daily operations with complete ownership of the deployment lifecycle.
• • Led the diagnosis and resolution of production issues collaborating directly with stakeholders to ensure system stability and high client satisfaction.
• • Developed reusable data extraction and transformation pipelines for large scale catalog enrichment handling hundreds of complex records daily before insertion into ERP systems.

Architected and deployed high-performance event-driven platforms and robust backend APIs for various client projects.

• • Architected a high performance event-driven platform handling over 8000 updates per hour, leveraging message queues and asynchronous workers (Celery & Redis) to manage real-time data flows and ensure high availability.
• • Achieved under 800ms response times under heavy load via server side optimization, Docker containerization, and automated cron pipelines.
• • Integrated complex APIs and managed data synchronization across multiple asynchronous services for various client projects.

Scaled through multiple roles up to Courses Coordinator, teaching backend and frontend technologies and building internal feedback platforms.

• • Built Boom Recorder: an internal video feedback platform with screen capture, automatic cloud upload, and sharing capabilities developed from start to finish as a solo project.
• • Taught over 1500 students across 15 cohorts in backend and frontend technologies maintaining a top tier rating and high graduation rate.
• • Mentored instructors on technical best practices and curriculum delivery promoting through multiple roles up to Coordinator.
• • Recognized as a Top 10 Instructor company wide in 2022.