Roland Leth

Roland Leth

Mentor
5.0
(17 reviews)
US$25.00
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ABOUT ME
iOS developer with full-stack knowledge, focused on user experience
iOS developer with full-stack knowledge, focused on user experience

I’m an iOS developer with 13 years of experience, and have 8 years of full-stack / frontend experience. My skills include Swift, SwiftUI, Node.js, Express.js, remix.run, React.js, TypeScript, React Native, Postgres, SQL, HTML, CSS, REST, unit / integration / e2e testing, CI/CD. One of my biggest desires is and has always been to create or be part of a team that creates a great product.

Since 2011, my main expertise has been iOS development, but I've also been involved in many Frontend and Backend development projects, personal and professionally. During the years, I've worked as a freelancer, by myself, on remote teams, but also with big companies such as DeinDeal—part of Ringier—or Therme Media—part of Therme Group—and started my own software company, Runtime Sharks, or startups like Eventa and Qality Tech.

I’ve been the one taking decisions, but I also had the chance to help shape others' decisions for the better. I'm always on the lookout to improve the user's experience, both visually and from a technical perspective; my ultimate goal is to know the user is happy and has the best experience while using the software I work on.

German, Romanian, English
Bucharest (+02:00)
Joined January 2016
EXPERTISE
12 years experience | 5 endorsements
I shipped two games and two apps on my own, then I continued as iOS Lead for almost 4 years for DeinDeal, one of the biggest flash-sales ...
I shipped two games and two apps on my own, then I continued as iOS Lead for almost 4 years for DeinDeal, one of the biggest flash-sales companies in Switzerland.Since late 2017, I've been running my own software company at https://runtimesharks.com; all our projects can be found at https://runtimesharks.com/projects. I've also been Head of Development at Therme Media for 2 years, Therme Group's media agency.
10 years experience | 5 endorsements
Ever since Swift was launched, I've been coding almost exclusively with it.
Ever since Swift was launched, I've been coding almost exclusively with it.
3 years experience | 4 endorsements
1 year experience
Created a couple of apps that make use of Firebase's push notifications, storage and/or crash reports.
Created a couple of apps that make use of Firebase's push notifications, storage and/or crash reports.
4 years experience

REVIEWS FROM CLIENTS

5.0
(17 reviews)
Jack Randy
Jack Randy
September 2018
Very patient and understanding. Took the time to really help me understand how to fix the problem and find other ways to navigate around it.
Dave Ekhaus
Dave Ekhaus
September 2018
Great job
Tomofumi Kimura
Tomofumi Kimura
September 2018
greatest mentor ever
Tomofumi Kimura
Tomofumi Kimura
September 2018
I felt like he can solve all problems while i had a session with him really. ask him if u have problems.
Tomofumi Kimura
Tomofumi Kimura
August 2018
how he explains me is really easy to understand even i can understand so everyone can understand 2 times faster than me. so everyone should ask him for help.
Tomofumi Kimura
Tomofumi Kimura
August 2018
He is a kind and explain my problem very well so i love it.
JJ
JJ
July 2018
Roland told a lot of details about AutoLayout and is an experienced mentor to explain differences in IOS development
EMPLOYMENTS
Founder &CPO
Qality Tech
2019-07-01-Present

Along with 3 friends, we set out to create a tool that will automatically generate and run all the tests required for a product. I wor...

Along with 3 friends, we set out to create a tool that will automatically generate and run all the tests required for a product. I worked with various technologies like Node.js, Express.js, HTML, CSS, TailwindCSS, React, remix.run, Docker containers, devops & sysops, bash scripting, microservice architecture, inter-app communication and security, REST APIs, but I also took part in the tech and product’s development and business direction.

During this time, I built multiple microservices/micro-web-apps, backend and frontend, most of which communicate with each other, some of them with large amounts of data. This communication happens either via REST APIs or through RabbitMQ.

HTML/CSS
Node.js
TypeScript
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HTML/CSS
Node.js
TypeScript
React
JavaScript
Swift
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iOS developer
Thoughtworks
2022-10-01-2024-10-01

I worked almost exclusively on an SDK in the IoT field, for an international company, delivering features, fixing bugs, improving the ...

I worked almost exclusively on an SDK in the IoT field, for an international company, delivering features, fixing bugs, improving the performance and reliability of the framework and keeping the code base properly test covered. The SDK is the common backbone for multiple front-facing apps, unifying the communication between apps and devices. I offered technical feedback, but also operational improvement ideas. I offered support to other team members, but also to colleagues from other teams.

Swift
RxSwift
SwiftUI
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Swift
RxSwift
SwiftUI
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Founder & Tech Lead
Runtime Sharks
2017-10-01-2022-10-01

At the end for 2017 I started my own software development company, mainly focused on iOS, but releasing web and Mac apps as well. We r...

At the end for 2017 I started my own software development company, mainly focused on iOS, but releasing web and Mac apps as well. We reached a diverse portfolio of almost 20 projects, most of which can be found at https://runtimesharks.com/projects.

Two of the most important ones are a full-stack (backend, frontend, iOS) social media platform, where users could share their travel stories and leave comments and likes to others photos; the other was also a social app, for iOS, where users could challenge others to build better habits via daily posts, comments, likes and uploading pictures.

Most projects include unit tests, integration tests and are accessible in various degrees.

Please check our portfolio here: https://runtimesharks.com.

Node.js
React
JavaScript
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Node.js
React
JavaScript
Swift
SwiftUI
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PROJECTS
ChallengeBeatView Project
2018
An app where you can challenge your friends, or even just yourself, to create — and maintain — the habits you always tried to cultivate. ...
An app where you can challenge your friends, or even just yourself, to create — and maintain — the habits you always tried to cultivate. From eating healthier to being more productive, from daring challenges to fun ones, like video games, ChallengeBeat can be your go-to app
Swift
iOS
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Swift
iOS
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Card VirtualView Project
2018
The main goal of the app is for users to save their fidelity cards digitally (or request new ones), combined with the conveniences of dis...
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 & 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!
Swift
iOS
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Swift
iOS
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