Open to opportunities

Jose Hermosillo

@josehermosillo

Message

Senior Python backend engineer specializing in FastAPI, AWS, and scalable production systems.

Mexico

Message

What I'm looking for

I seek senior backend or cloud roles where I can own reliable, scalable services, mentor teams, and integrate ML capabilities while improving release velocity and observability.

I am a Senior Python Backend Engineer with 13+ years building and operating production systems, focused on designing reliable backend services and REST APIs using Python/FastAPI and deploying on AWS. I have led projects that improved release reliability and velocity by establishing CI/CD pipelines, production readiness standards, and observability practices adopted across teams.

I have hands-on experience integrating AI/ML (PyTorch, LLM/GenAI) into backend workflows, architecting event-driven and stream-processing systems with Kafka, and optimizing databases for high performance. I take technical ownership, mentor engineers, and drive cross-functional delivery to achieve high uptime and scalable architectures.

Experience

Work history, roles, and key accomplishments

Current

Lead Software Engineer

Current

Apple

Jan 2024 - Present (2 years)

Architected and launched 6+ backend microservices with Python/FastAPI and Go, deployed on AWS to support ~500k–800k API requests/day and established production readiness standards adopted across the project.

Python fastAPI Go AWS REST APIs Microservices CI CD Observability

Senior Software Engineer

PriceLabs

Oct 2019 - Jan 2024 (4 years 3 months)

Led backend systems for pricing and revenue optimization delivering 99.99% uptime and built a Kafka-based stream-processing pipeline handling ~1–2M events/day with replay/backfill support.

Python AWS ECS Lambda S3 Kafka PostgreSQL Stream Processing Observability CI CD

System Manager

iTexico

Aug 2017 - Jan 2020 (2 years 5 months)

Led production reliability and release delivery for client-facing applications, standardized release management and authored incident response playbooks to improve operational stability.

Release Management Incident Response Monitoring Observability

Backend Developer

Alluxi

Jan 2013 - Jun 2017 (4 years 5 months)

Developed and maintained backend services using Python/Django and PHP/Laravel and optimized PostgreSQL/MySQL schemas to improve endpoint performance and reduce timeouts.

Python Django PHP Laravel PostgreSQL MySQL Query Optimization Jenkins CI Backend Development

Developer Intern

Assetel

Jun 2011 - Dec 2012 (1 year 6 months)

Developed internal web applications and REST endpoints in PHP and .NET, performed MySQL schema updates and query optimization to improve operational reporting reliability.

PHP .NET REST APIs MySQL Query Optimization Internal Tools