Backend SystemsAWS & CloudDistributed Workflows

Technical Lead | Full Stack Engineer | Cloud Architect

Backend systems, AWS platforms, distributed workflows, and data-intensive applications

Technical lead and hands-on software engineer with 5+ years of professional software engineering experience building backend systems, cloud-native applications, and data-intensive platforms. I design and operate production systems across Python, AWS, distributed workflows, and modern web architectures, with end-to-end ownership spanning backend development, cloud infrastructure, DevOps, and operations. My background also includes 10+ years of computational and scientific programming through research in computational physics, bioinformatics, and large-scale analytical workflows.

John James Tello-Cajiao
5+
Years in Professional Software Engineering
11
Repositories Maintained
5
Production Systems Owned
50k+
WhatsApp Chatbot Interactions

Backend & Platform Engineering

I build backend services, APIs, and production workflows that turn product requirements into reliable systems, with strong emphasis on maintainability, clean structure, and long-term scalability.

Cloud Architecture & Operations

I design and operate AWS-based platforms using ECS Fargate, Lambda, SNS, SQS, RDS, S3, CloudFront, IAM, and CloudWatch, with hands-on ownership of deployment, monitoring, and incident response.

Distributed Workflows & Automation

I design asynchronous and event-driven workflows for chatbot systems, notifications, AI-assisted reporting, and scheduled processing, improving observability, retries, and operational reliability.

Scientific Computing & Data Systems

My background in computational physics, bioinformatics, and large-scale analytical workflows gives me a rigorous approach to data-intensive systems, modeling, reproducibility, and technically challenging problems.