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Randy – Swift, SwiftUI, Objective C, experts in Lemon.io

Randy

From United States (UTC-7)

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Mobile DeveloperSenior
32 years of commercial experience
AI
Architecture
Automotive
Banking
Construction
Fintech
Gambling
Healthcare
Hospitality
Life science
Machine learning
Pharmaceutics
Sales
Sports
CRM
Gaming software
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Randy – Swift, SwiftUI, Objective C

Randy is a Senior iOS/MacOS engineer with 20+ years in the industry. He’s worked at startups and big names like Tesla and First Republic Bank. Randy has been the sole developer on projects and also led engineering teams, averaging 10 people. He’s a solid team player who’s not afraid to make mistakes and learns from them. Recently, he’s been diving into AI and machine learning, designing and training custom NLP models.

Main technologies
Swift
10 years
SwiftUI
3 years
Objective C
4 years
MacOS
8 years
Additional skills
C#
Jetpack Compose
Kotlin
SwiftLint
GraphQL
Core Data
UIKit
Prompt engineering
AI
ML
PyTorch
OpenAI API
Python
Direct hire
Potentially possible
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Experience Highlights

Senior Software Engineer
Jun 2024 - Ongoing11 months
Project Overview

Projects dedicated to building custom AI and ML solutions.

Responsibilities:
  • Developed end-to-end machine learning workflows using Python, Jupyter, and scikit-learn;
  • Built and tested AI-powered prototypes leveraging OpenAI and Hugging Face APIs;
  • Designed and trained custom models for natural language processing tasks such as summarization and classification.
Project Tech stack:
Python
PyTorch
OpenAI API
Prompt engineering
AI
ML
Senior Software Engineer
Jan 2025 - Mar 20251 month
Project Overview

It's a digital tipping platform for the hospitality and service industry.

Responsibilities:
  • Developed complex integrations with 3rd party frameworks using Kotlin Multiplatform;
  • Worked with two other engineers to build the iOS and Android apps to their first releases;
  • Increased unit test code coverage by over 60%.
Project Tech stack:
Kotlin
Jetpack Compose
Swift
SwiftUI
Software Engineering Manager
May 2023 - May 20241 year
Project Overview

It's a betting and gaming startup created to build a new sportsbook app.

Responsibilities:
  • Oversaw the development of the app’s iOS and Android versions, leading a team of nine engineers;
  • Collaborated with technical leads to architect the front-end infrastructure;
  • Engaged with key stakeholders and back-end leadership to shape and prioritize the feature development roadmap;
  • Built a custom analytics platform for mobile;
  • Reviewed code regularly to improve clarity, structure, and performance;
  • Handled Scrum Master duties, running all Agile ceremonies.
Project Tech stack:
Swift
SwiftUI
SwiftLint
Kotlin
Jetpack Compose
Lead Mobile Engineer
Apr 2020 - Sep 20211 year 5 months
Project Overview

It's a document management platform.

Responsibilities:
  • Handled the entire mobile development effort for the iOS app;
  • Collaborated with the back-end team to define the GraphQL schema;
  • Worked with stakeholders to shape the feature roadmap;
  • Created a custom fork of PDFTron tailored for use in the app;
  • Developed comprehensive unit and UI tests in the absence of a dedicated QA team.
Project Tech stack:
Swift
GraphQL
Senior Mobile Engineer
Feb 2016 - Jul 20171 year 5 months
Project Overview

It's an agency that builds mobile solutions for its portfolio of clients.

Responsibilities:
  • Played a key role in projects for First Republic Bank, Kaiser Permanente, and Tesla;
  • Reverse-engineered the Tesla app and developed an improved iOS version from scratch;
  • Developed multiple features for the Kaiser app using Kotlin;
  • Built the entire "business" version of the First Republic Bank app using Swift and contributed to the on-time completion of the "commercial" version using Objective-C;
  • Executed a strategy to integrate analytics for First Republic Bank.
Project Tech stack:
Objective C
Swift
UIKit
Core Data
Kotlin
Senior Software Engineer
Jul 2012 - Jan 20163 years 6 months
Project Overview

It's a cloud-based CRM platform for the life sciences industry, particularly pharmaceutical and biotechnology companies.

Responsibilities:
  • Participated as a founding developer, supporting the company’s progression from startup to IPO;
  • Led and took ownership of multiple major features;
  • Engineered a framework to improve the efficiency of UI testing;
  • Acquired skills as a Salesforce Cloud Administrator to support the team.
Project Tech stack:
Objective C
Core Data
UIKit

Education

1997
Computer Science Engineering
BS

Languages

English
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