Software Engineer · Mobile Architecture · Hermosillo, MX
Software engineer specializing in mobile architecture and the production systems behind it.
15+ years building, evolving, and shipping software, with a background rooted in iOS and recent work spanning production reliability, security-sensitive systems, technical decision-making, and AI-assisted development.
Over the years, I've found that the hardest engineering problems rarely come down to writing code. They usually involve understanding existing systems, navigating constraints, choosing trade-offs, and getting reliable software into production.
My background is rooted in iOS and mobile architecture, and along the way that's included security-sensitive product work, release engineering, performance, and legacy modernization. Increasingly, that's expanded into the broader systems and decisions behind mobile software, including how AI-assisted development changes, and doesn't change, that work.
I'm based in Hermosillo, Sonora, Mexico, and work remotely with distributed teams.
Selected essays on architecture, trade-offs, and lessons from production systems.
AI-Assisted Engineering
The Bottleneck Is No Longer Writing CodeAI has made implementation cheaper; understanding the system is what still determines whether it works.
Technical Decision-Making
Why I Built My App with Flutter Instead of SwiftA framework choice driven by product constraints and long-term trade-offs, not personal preference.
Architecture & Ownership
The Other Side of Technical FreedomBeing trusted to make the technical decisions also means owning what happens after they ship.
Production & Security
Security Isn't About Shipping FastWhy authentication, secrets, and access control are systems problems, not launch-day checklist items.
Engineering problems I've owned, and the judgment required to solve them.
In a regulated fintech environment, account protection is a systems problem, not a single feature. I owned the architecture and rollout of a KYC Refresh initiative, alongside security work spanning OTP/2FA, Secure Code, Trusted Contacts, and hardening driven by penetration-testing findings like jailbreak detection and Face ID vulnerabilities.
Shipping mobile software is rarely finished when the implementation is. As iOS Release Manager during high-impact release cycles, I owned release readiness and production-issue mitigation across cross-functional teams, the judgment call being less "is it built?" and more "is it actually ready?"
As Lead iOS Engineer on a high-engagement consumer video platform, the work meant evolving several layers of a production system at once, not one clean migration: contributing to an OpenGL-to-Metal rendering pipeline, a custom video caching module for playback reliability, and the CircleCI/Fastlane release pipeline underneath it all.
He's an extremely competent iOS engineer and takes the time to understand the underlying product requirements. He's not afraid to question things and present alternatives. Working with Jesus was one of the few times I genuinely looked forward to daily conference calls.
Jonathan Wilson
Zendesk
He's an incredibly talented, diligent, and efficient engineer. He understands product goals quickly and can implement with minimal guidance. He is a master of best-practices, even more so, he's a true master of iOS.
Scott Levy
Daily Spot
He is one of the easiest and most fun people to work together with I've ever worked with. He is not only an amazing culture fit, but he cares deeply and is very thorough in his work. I recommend Jesus to fit any team in compelling challenges.
Mehmet Fatih
NoMad Interactive
He was the lead iPhone developer for a complex application. His technical expertise, creativity, and attention to detail were matched by an "I'll find a way to do it" attitude. A real pleasure to have on the team.
Philippe Bouissou
Blue Dots Partners
He has a strong skill for translating customer requirements into the app. Beyond delivering quality work on deadline, he supported the whole development cycle, discussing business rules and design.
Dmitry Ryazantsev
Toptal