Roland is available for hire
Hire RolandRoland Leth
Verified Expert in Engineering
iOS Developer
Location
Bucharest, Romania
Toptal Member Since
April 24, 2014
Roland has 12 years of iOS development experience, with a portfolio of over 20 iOS and Mac apps and websites. Roland has been the iOS lead for almost four years at DeinDeal, a dominating flash sales company from Switzerland, and then head of digital for two years at Therme Media, a media agency owned by the Therme Group.
Portfolio
Runtime Sharks
Vapor, Node.js, React Native, React, JavaScript, Swift, SwiftUI, iOS...
Therme Media
Swift, iOS, User Interface (UI), Cocoa Touch, JavaScript...
Greener Pastures (now Shortcut)
Swift, TypeScript, iOS, User Interface (UI), Cocoa Touch, JavaScript...
Experience
Availability
Full-time
Preferred Environment
Git, Visual Studio Code (VS Code), Xcode, MacOS
The most amazing...
...accomplishments I've had were coding full-stack social platforms and building and coordinating teams from scratch.
Work Experience
Founder and Tech Lead
2017 - PRESENT
Runtime Sharks
- Launched ChallengeBeat, a social app to challenge yourself and your friends and build better habits.
- Rolled out a social media platform where users could post their travel stories, leave comments, and give likes. Fully involved in creating the back and front end and the iOS app.
- Developed an app for a digital bookkeeping fidelity card that features shareable shopping lists and offers from merchants.
- Launched an app to keep track of ideas, built with React Native.
- Built an app to easily see the percentage of time remaining from the current y/q/m/w/d in a Mac menu bar.
- Launched an app to easily activate DND for a specific time from a Mac menu bar.
- Contributed to a SaaS for easy team page creation with Node.js.
- Rewrote a personal blog and company website with various technologies.
Technologies: Vapor, Node.js, React Native, React, JavaScript, Swift, SwiftUI, iOS, User Interface (UI), Cocoa Touch, Web, RESTful Web Services, REST, Google Analytics, Firebase, HTML5, CSS3, Core Animation, TypeScript, APIs, API Design, API Documentation, REST APIs, JSON, JSON REST APIs, Mobile, Mobile Development, Development, Mobile App Development, Architecture, Jest, Redux, Front-end, Full-stack, DigitalOcean, API Integration, Mobile Applications, Express.js, Docker, Figma, Design, User Experience (UX), Next.js, Responsive Web Design (RWD), Pixel Perfect, Google SEO, SEO Tools, Accessibility, Location Services, Team Leadership, Technical Leadership, SaaS, Software Architecture, RabbitMQ, PSQL, CI/CD Pipelines, Solution Architecture, CTO, React Redux, Server-side Rendering (SSR), Flexbox, Python
Head of Digital
2020 - 2022
Therme Media
- Created and coordinated multiple mobile projects from scratch with SwiftUI, all unit-tested, UI-tested, and fully accessible. Developed various front-end and back-end projects with React, Tailwind, remix.run, and Node.js.
- Worked on the UX side of projects. Created and coordinated with the mobile team.
- Acted as the connection point between many teams (stakeholders, content, testing, business, UI/UX, back end, and mobile), moving things forward in the smoothest and most beneficial way for all parties, including the business.
Technologies: Swift, iOS, User Interface (UI), Cocoa Touch, JavaScript, Agile Software Development, Web, Node.js, React, RESTful Web Services, REST, Google Analytics, HTML5, CSS3, APIs, API Design, API Documentation, REST APIs, JSON, JSON REST APIs, Software Analysis, SwiftUI, Mobile, Mobile Development, Development, Mobile App Development, Architecture, Redux, Front-end, Full-stack, API Integration, Mobile Applications, Figma, Design, User Experience (UX), Responsive Web Design (RWD), Pixel Perfect, Google SEO, SEO Tools, Accessibility, Team Leadership, Technical Leadership, Software Architecture, PSQL, CI/CD Pipelines, Solution Architecture, Server-side Rendering (SSR), Flexbox
iOS Developer
2019 - 2020
Greener Pastures (now Shortcut)
- Worked with Google Maps, real database sync, Firebase, complex animations, and complex notification schedules.
- Worked with Firebase Functions (TypeScript) and complex testing/data validation algorithms and offered continuous UI/UX feedback.
- Involved in various soft processes, trying to improve how the team operates and how it collaborates with the other teams.
Technologies: Swift, TypeScript, iOS, User Interface (UI), Cocoa Touch, JavaScript, Agile Software Development, Web, Node.js, RESTful Web Services, REST, Firebase, APIs, API Design, API Documentation, REST APIs, JSON, JSON REST APIs, Mobile, Mobile Development, Development, Mobile App Development, Architecture, API Integration, Mobile Applications, Express.js, Figma, Design, User Experience (UX), Pixel Perfect, Location Services, CI/CD Pipelines, Solution Architecture
Lead iOS Developer
2013 - 2017
DeinDeal
- Served as lead developer, helping with sprint planning and helping the product team when needed. Brought new ideas in, provided technical suggestions, and helped the junior developers constantly. I contributed over 75% of the work to the main iOS app.
- Implemented most of the RESTful services and handled internal APIs. Ensured that the UI was pixel-perfect and 100% compliant with design.
- Created several custom controls for the iOS apps I worked on. Implemented most of the animations and transitions.
Technologies: Ruby, Swift, Objective-C, iOS, User Interface (UI), Cocoa Touch, Agile Software Development, RESTful Web Services, REST, Scrum, APIs, API Design, API Documentation, REST APIs, JSON, JSON REST APIs, Mobile, Mobile Development, Development, Mobile App Development, Architecture, Google Tag Manager, API Integration, Mobile Applications, Design, User Experience (UX), Responsive Web Design (RWD), Pixel Perfect, Google SEO, SEO Tools, Accessibility, Team Leadership, Technical Leadership, Software Architecture, PSQL, CI/CD Pipelines, Solution Architecture
iOS and Ruby Developer
2010 - 2013
Freelance
- Created an iOS 7 passcode replica library, used by many apps, even today.
- Built an mm/yyyy picker control feature for credit card expiration dates.
- Created an expense planning app on the App Store.
- Developed a car maintenance planning app on the App Store.
- Created and launched two games on the App Store.
- Built a personal blog from scratch, with various technologies, as a means to learn.
- Created a small, internal, what-do-we-eat-today web app for the office.
- Created a set of extensions for Swift to make one's life easier.
Technologies: Dropbox API, Relational Data Mapping, PostgreSQL, CSS, HTML, Ruby, Swift, Objective-C, iOS, User Interface (UI), Cocoa Touch, Web, React, React Native, RESTful Web Services, REST, Sinatra, Heroku, HTML5, CSS3, MySQL, Core Animation, SpriteKit, APIs, API Design, API Documentation, REST APIs, JSON, JSON REST APIs, Mobile, Mobile Development, Development, Mobile App Development, Architecture, Front-end, Full-stack, DigitalOcean, API Integration, Mobile Applications, Express.js, Design, User Experience (UX), Responsive Web Design (RWD), Pixel Perfect, SEO Tools, Accessibility, PSQL, CI/CD Pipelines, Solution Architecture, Server-side Rendering (SSR), Flexbox
Experience
DeinDeal
Native iOS app for the web app.
My Travel Stories
Travel, take beautiful photos, write down your feelings and create your travel journal. Share your stories with the world and find inspiration from others for your next trips!
TimeProgress
See at a glance what percentage of the current year, quarter, month, week or day has passed (or is remaining) and never get caught off-guard again.
Goalee
What drives you each day? What matters to you the most? Remind yourself often, so you don't forget what your true goals in life are!
DND Me
Ever wanted to get more focused work done?
Do you turn Do Not Disturb on, but forget to turn it off?
Look no further!
Activate Do Not Disturb for a few hours and work distraction free!
Do you turn Do Not Disturb on, but forget to turn it off?
Look no further!
Activate Do Not Disturb for a few hours and work distraction free!
Runtime Sharks
The first iteration of this website was a server-rendered one created with Vapor, a server-side framework based on Swift. We eventually realized it would be a good idea to modernize it, so we rewrote it with Node.js, Express, and React.
This allowed us to make use of modern JavaScript frameworks and bring some liveliness to our website. In the process, we also greatly improved the structure. The source code is open source, and you can find it below.
This allowed us to make use of modern JavaScript frameworks and bring some liveliness to our website. In the process, we also greatly improved the structure. The source code is open source, and you can find it below.
IdeaTrackerr
The app to easily keep track of your ideas, where you can give a status to each one and keep a history of everything related to it.
Puppet Anthems
Your fancy and fun way to learn about the national anthems and cultures of many different countries. Animated puppets that sing the anthem, while juggling country specific iconic items.
Expenses Planner
An app to easily keep track of upcoming expenses, with reminders, time zone support, and 100% VoiceOver compliance.
Carminder
An app to easily keep track of car service, with reminders, time zone support, and 100% VoiceOver compliance.
LTHPasscodeViewController
https://github.com/rolandleth/LTHPasscodeViewControllerA user friendly iOS 7-style passcode view similar to the one seen within the Settings app when changing passcodes. It supports login/logout and simple/complex passcodes.
LTHMonthYearPickerView
https://github.com/rolandleth/LTHMonthYearPickerViewA user-friendly month and year picker view for pesky credit card expiration dates.
Bouncy B
This is an inverted endless runner game. Instead of running and jumping from platform to platform, users are constantly falling and need to bounce on the platforms to avoid falling to defeat.
My Blog
My personal blog.
ChallengeBeat
The app where you can challenge your friends, or even just yourself, to create—and maintain—the habits you always tried to cultivate.
Card Virtual
The main goal of the app is for users to save their fidelity cards digitally (or request new ones), combined with the conveniences of displaying merchants and their offers, and having a shopping list at hand. There's also a friends feature, with which users can share their shopping lists—shopping together, faster, and smarter has never been easier!
Skills
Languages
JavaScript, Swift, TypeScript, HTML, HTML5, CSS3, Ruby, CSS, Objective-C, Python
Frameworks
SwiftUI, Express.js, Next.js, Cocoa Touch, Redux, Jest, Vapor, Sinatra, React Native
Libraries/APIs
Node.js, React, REST APIs, React Redux, Flexbox, Dropbox API, Core Animation, SpriteKit
Paradigms
REST, Mobile Development, Agile Software Development, Scrum, Responsive Web Design (RWD)
Platforms
iOS, Mobile, Visual Studio Code (VS Code), Web, DigitalOcean, MacOS, Firebase, Heroku, Docker
Storage
JSON, PostgreSQL, PSQL, MySQL
Other
RESTful Web Services, APIs, API Design, API Documentation, JSON REST APIs, Development, Mobile App Development, Full-stack, API Integration, Mobile Applications, Pixel Perfect, Team Leadership, Technical Leadership, Software Architecture, Solution Architecture, User Interface (UI), Architecture, Front-end, User Experience (UX), Google SEO, Accessibility, SaaS, CI/CD Pipelines, CTO, Server-side Rendering (SSR), Relational Data Mapping, Economics, Computer Science, Software Analysis, Google Tag Manager, Design, SEO Tools, Location Services
Tools
Xcode, Git, Google Analytics, Figma, RabbitMQ
Education
2008 - 2010
Master's of Computer Science Degree in Computer Science
Bucharest Academy of Economic Studies - Bucharest
2004 - 2008
Bachelor of Computer Science Degree in Computer Science
Bucharest Academy of Economic Studies - Bucharest
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