Open to opportunities

César Rodríguez

@csarrodrguez

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Senior iOS developer blending modular architectures with AI-driven features and measurable performance wins.

Colombia

Message

What I'm looking for

I’m looking for a role where I can ship high-quality iOS features, strengthen modular architectures with strong testing, and integrate AI/computer-vision capabilities—while driving real performance improvements and collaborating with teams to scale impact.

I’m a Senior iOS developer focused on building and improving iOS applications across iPhone, iPad, and broader Apple ecosystems. At SymplastEHR, I refactored existing code, implemented new features, and led architecture work emphasizing modularization and testability.

My impact is practical and measurable: I refactored the messaging module to adopt the new architecture and achieved 90% code coverage, while reducing loading time by 10% and HTTPS request time by 50% by following Apple’s best practices. I also worked on AI-driven functionalities to streamline routine tasks like transcription and automatic face alignment.

Across my earlier roles, I delivered mobile improvements and on-device ML solutions—moving a machine learning model from the backend to the device in Outlook to significantly improve response times and reduce network requests, and cutting startup time by ~15%. I’ve also built computer-vision and simulation POCs, and at Globant-Disney I led a team of 15 people sustaining core app components with zero/near-zero bugs.

Experience

Work history, roles, and key accomplishments

Senior iOS Developer

SymplastEHR

Mar 2023 - Feb 2026 (2 years 11 months)

Led an architecture initiative emphasizing modularization and testability, refactoring the messaging module to achieve 90% code coverage. Improved app performance by reducing loading time by 10% and HTTPS request time by 50%, and built AI-driven features for transcription and automatic face alignment.

Swift iOS Development Unit Testing Test Coverage Performance Optimization Messaging Systems Flutter

iOS Developer

Microsoft

May 2022 - Nov 2022 (6 months)

Implemented key features and fixed bugs for Outlook on iOS. Built a POC moving a machine learning model from the backend to-device, improving response time while reducing network requests and server power usage, and decreased app startup time by ~15% using best practices.

Swift iOS Development Performance Optimization Networking PoC Development App Startup Optimization

iOS Developer

Hourly

May 2020 - Apr 2022 (1 year 11 months)

Added user-requested features for a US-based startup, improving user retention and yearly plan renewal. Refactored key components to reduce code repetition and improve architecture, and developed a high-performance computer-vision POC using the Accelerate framework.

Swift iOS Development Unit Testing Refactoring Architecture Computer Vision Accelerate Performance Tuning

iOS Developer

Globant

Sep 2015 - Sep 2018 (3 years)

Maintained and added features for Disney Park apps (My Disney Experience, Disneyland, Hong Kong Disneyland, Disneyland Paris) using Objective-C and Swift. Developed a top revenue feature, refactored reusable components, led a team of 15 sustaining core modules, and supported releases with zero/near-zero bugs.

Objective C Swift iOS Development Refactoring Team Leadership Architecture Maintenance

iOS Developer

FoonkieMonkey

Oct 2010 - Aug 2015 (4 years 10 months)

Developed iPhone and iPad apps from scratch using Objective-C and Swift, building 15 apps across varied technologies and challenges. Reached 3rd place in the Colombian app store with one of the apps developed.

Objective C Swift iOS Development App Development From Scratch Debugging Product delivery

Education

Degrees, certifications, and relevant coursework

Universidad Nacional de Colombia

Master of Science, Systems Engineering

2018 - 2024

Grade: GPA 4.6/5.0

Activities and societies: Coursework included Intelligent Systems, Digital Image Processing, Artificial Life, Machine Learning, Evolutionary Computation, Theoretical Computer Science, and Advanced Digital Image Processing.

M.Sc. in Systems Engineering at Universidad Nacional de Colombia (2018–2024), focused on intelligent systems, machine learning, and digital image processing.

Universidad Distrital Francisco José de Caldas

Bachelor of Science, Systems Engineering

2008 - 2015

Grade: GPA 3.9/5.0

Activities and societies: Coursework included Structured Programming, Object-Oriented Programming, Data Structures and Algorithm Analysis, Software Development, Artificial Intelligence, Signal Analysis, and Database Design.

B.S. in Systems Engineering at Universidad Distrital Francisco José de Caldas (2008–2015), with coursework in structured and object-oriented programming, data structures and algorithms, software development, artificial intelligence, and signal analysis.