Available to hire
Hi, I’m Sebastian Guerrero. I’m a software engineer with over five years of experience building cutting-edge iOS apps and games. I enjoy turning ideas into high-quality, usable software by applying solid design patterns and architectures. I thrive under pressure, love solving problems, and I’m always there for my teammates. I bring strong collaboration, test-driven approaches, and a user-centric mindset to every project.
Experience Level
Language
Spanish; Castilian
Fluent
English
Advanced
Work Experience
Principal iOS Engineer at Copper.co
January 1, 2024 - PresentMentor and onboard new team members; drive new feature research and implementation; support and maintain one of Copper’s older iOS apps; own iOS development pipeline.
Senior iOS Engineer at Copper.co
July 1, 2022 - January 31, 2024Mentored team members; maintain and add functionality to the iOS app; migrate legacy Objective-C code to Swift; maintain iOS development pipeline.
Senior iOS Engineer at Capital One
October 1, 2020 - July 31, 2022Mentored onboarding; maintain and extend Capital One iOS app; migrate legacy Objective-C code to Swift; maintain iOS development pipeline.
Freelance iOS Developer at BuenPlan
May 1, 2020 - July 31, 2020Developed custom Swift modules to enhance customer experience during the ticket purchase flow.
Software Engineer at Devsu
September 1, 2017 - May 31, 2020Led iOS projects; built mobile and web apps following best practices (e.g., Deutsch - Tacobell, Fiducia, etc.).
Tech Lead at Cognitical
January 1, 2015 - January 31, 2017Backend for a sentiment analysis tool; led backend development using Node-RED, IBM Cloud; SCRUM.
iOS Developer at Roller Agency
May 1, 2016 - March 31, 2017Built iOS apps and services for clients.
iOS Native Developer at ROCHE - LATAM (Actemra) - Freelance
November 1, 2014 - December 31, 2014iOS app for Actemra dosage calculations; freelance project.
iOS Native Developer at ROCHE - LATAM (Herceptin) - Freelance
July 1, 2014 - September 30, 2014iOS app for Herceptin dosage calculations; freelance project.
iOS Developer at App Touch - Once Futbol
July 1, 2013 - March 31, 2014iOS live scores app with push notifications; backend integration; Ecuador.
Education
MSc. Information Technology (Merit) at University of Nottingham
January 11, 2030 - June 1, 2016BSc. Computer Science (First class) at National Polytechnic School
January 11, 2030 - June 1, 2014Qualifications
Industry Experience
Software & Internet, Media & Entertainment, Professional Services
Experience Level
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