Jesús Guerra

Senior iOS Engineer
Swift / UIKit • Mobile Architecture • Fintech & Consumer Apps
Based in Hermosillo, Mexico — open to remote.

About Me

I’m a Senior iOS Engineer with 15+ years of experience building scalable mobile applications for fintech and consumer platforms.

My work focuses on mobile architecture, security-focused features, and performance optimization for production iOS apps. I specialize in Swift and UIKit, building modular systems that are reliable, testable, and maintainable at scale.

Most recently at Bitso, a leading cryptocurrency exchange in LATAM, I worked on security-critical initiatives including KYC refresh flows, authentication systems (OTP / 2FA), anti-phishing protections, and broader mobile security improvements in a regulated fintech environment.

Previously, I served as Lead iOS Engineer at JibJab, where I helped drive architectural decisions, migrated the rendering pipeline from OpenGL to Metal, and implemented performance improvements for a multimedia-heavy consumer application.

I work closely with backend, Android, product, and design teams to deliver reliable mobile features end-to-end, and I’ve also collaborated with startups and enterprise clients to launch products, modernize legacy systems, and design scalable mobile architectures.

I’m based in Hermosillo, Sonora, Mexico and I’m open to fully remote roles.

iPhone X iPad iPhone Apple Watch

Jesus is one of the easiest and most fun people to work together with I've ever worked with. Always an uplift in meetings. He is not only an amazing culture fit, but he cares deeply and very thorough in his work. He is genuinely passionate about his work and the community, ecosystem around it.

I recommend Jesus to fit any team in compelling challenges with an always-positive and can-do attitude who will move the project/product forward. He's really a great team player I really enjoyed working together.

Mehmet Fatih
NoMad Interactive

Jesus is a true joy to work with. 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

Jesus was involved with us as the lead iPhone App developer for a complex application. I have been impressed by his strong technical expertise, creativity, sense of urgency, his attention to details and overall extremely positive attitude. His "I will find a way to do it" with a smile attitude is very uplifting. It is a real pleasure and privilege to count Jesus as part of our team!

Philippe Bouissou
Blue Dots Partners

Jesus is as good as it gets! 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. The best part of all is that he's a joy to work with. Jesus has a contagious, positive attitude. He shares your excitement when embarking on a challenging problem, and he's always eager to share his elegant solution.

Scott Levy
Daily Spot

Jesus has a strong skill to bring customer's requirements into the iOS app. He could not only provide high quiality apps and meet deadlines but also support the whole development cycle discussing business rules and desings.

Dmitry Ryazantsev
Toptal

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Availability

Currently, Open to opportunities — Senior/Staff iOS roles (remote) and selective consulting.