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 and scaling mobile products across fintech, healthcare, consumer, and startup environments.

Throughout my career, I've helped teams launch products from scratch, modernize legacy applications, improve engineering practices, and deliver mobile platforms used by thousands of users.

My expertise spans mobile architecture, security, performance optimization, release management, and cross-functional collaboration. I enjoy solving complex product and technical challenges while balancing scalability, maintainability, and delivery speed.

Most recently at Bitso, I worked on security-critical initiatives including KYC refresh flows, authentication systems (OTP and 2FA), anti-phishing protections, trusted contacts, and other account security features within a regulated fintech environment.

Previously, as Lead iOS Engineer at JibJab, I helped drive architectural decisions, led the migration of the rendering pipeline from OpenGL to Metal, and improved performance across a multimedia-heavy consumer application.

In addition to full-time roles, I've partnered with startups and enterprise clients through consulting engagements, helping teams ship products, improve engineering workflows, scale mobile architectures, and navigate critical technical decisions.

I’m passionate about building reliable software, mentoring engineers, and sharing practical lessons from real-world product development.

I’m based in Hermosillo, Sonora, Mexico I'm available for remote opportunities, consulting engagements, and technical leadership 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

Engineering Writing

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Availability

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