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Christian Ray Leovido
VIPER tutor
US$25.00 /15 min
Software Contractor and Senior iOS Engineer (Swift, RxSwift, SwiftUI, Combine, UIKit) Mentoring and focusing on the essentials, foundations and best practices of Software engineering and development. Swift, SwiftUI, clean code, Test Driven Development, Design Patterns, Software principles. Expert with MVVM, VIPER and The Composable Architecture (TCA) and more architectures. Building and deploying Startup and Enterprise apps to the App Store. Born in Spain🇪🇸, living in the UK🇬🇧, originally from the Philippines🇵🇭. - 8+ years of commercial experience building iOS applications in Swift. - Full Stack Developer. MERN stack. Cypress, Jest - 3 years of experience with React Native and bridging applications from Swift to React Native. _________________ Are you a freelancer looking to build a new app? Do you need a prototype for an app? Do you have a design and need a developer to build your app? Are you a company looking to outsource or build an app? Let's talk if you answered yes to any of the above questions. I provide solutions for startups offering the best options to save you time and keep your business growing. _________________ **Paradigms**: Object-oriented and Functional/Reactive programming. Creating meaningful and enjoyable UI transitions to keep the user engaged and access their data in real-time. Worked on production apps extensively with: - Swift - SwiftUI - Combine - Async/await - RxSwift - Firebase - Node.js - Cocoapods - Swift Package Manager Fundamental knowledge and teaching software architectures: - **MVC** (Model, View, Controller) - **MVVM** (Model, View, View Model) - **TCA** (The Composable Architecture) Software design principles: SOLID to improve orthogonality, flexibility and reusability of components. Communication of **data** from view controllers to any other view such as UIAlertController, container views, UITableViewCells, UICollectionViewCells, etc. Options to communicate data can be achieved through the use of weak delegates + Segues with Storyboards. Other options include using Databases. **Storage** - Firebase Real-time database, Firestore. - MongoDB, - UserDefaults - CoreData - Custom API (Facebook, Google, Github, your website, etc.) Alternatively offering a different solution programmatically without using Segues from Storyboards to increase performance and code maintainability. Several presentation styles, modals, over current context, custom, etc. with animations. Native components are the way to go with performance and maintenance. Working with UIKit, Foundation, SwiftUI - UITableView + Headers + Footers and custom UITableViewCell - UICollectionView + Headers + Custom UICollectionViewCell - UICollectionViewFlowLayout - Managing the Delegate and Data Source into their own components for efficient unit testing. - SwiftUI Lists and Stacks - iOS 13 and 14 Compositional Layouts in UICollectionView SwiftUI focuses on a declarative way of writing code. Teaching about the essentials of Functional Programming. **Networking** Native iOS - URLSession - Combine Third-party, external - Alamofire - Moya - PromiseKit **Testing frameworks** - XCTest (iOS native) - Quick - Nimble ____ I have experience creating Full stack applications connecting different services and stacks together. From iOS to Firebase, a custom backend and connecting 3rd party APIs to your application. 5+ years of experience building commercial and business iOS apps using different Software Architectures such as MVC and MVVM and following the SOLID principles. Adhering to Test-driven development along with pipeline automation and working closely with the Directors, team and customers to build a stable app on every release. Delivering high-quality products for easy maintenance, robustness, and readability along with applying the Agile principles. iOS networking and REST API implementations to gather data from the backend or other third-party providers.
Amit Kumar Swami
VIPER tutor
US$20.00 /15 minExperienced iOS Developer with a demonstrated history of working in the information technology and services industry. Skilled in Swift, Objective-C, C and Ruby on Rails. Also worked on Android, Javascript, Python, PHP, C++, Hibernate, and Spring Framework. Strong engineering professional with a Bachelor of Technology (B.Tech.) focused in Computer Science from Indian Institute Of Technology. Developer story https://stackoverflow.com/users/story/1468663
- VIPER
- HTML/CSS
- Python
- Android
- Java
- C++
- C
- Ruby on Rails
- Haskell
- Git
- Database
- Core Data
- Continuous Integration
- Big Data
- JavaScript
- Software Development
- Graphics
- Hybrid app
- iOS
- RESTful API
- Ruby
- MySQL
- Angular
- Linux
- Xcode
- Spring
- Bash
- jQuery UI
- PostgreSQL
- Shell
- Java EE
- MVVM
- PhoneGap
- Version control
- GitHub
- D3.js
- OAuth
- Devise
- Jenkins
- GitLab
- Fabric
- MVC
- Mixpanel
- Reactive Programming
- Objectivec
- Back-End
- Objective-C
- Subversion
- Circleci
- Frp
- Swift
- Fastlane
- Apache cordova
- RxSwift
- Swift 2
- Swift 3
- Rxcocoa
- Swift 4
- Bitrise
- Appsflyer
- Hibernate ORM
Samuel Sierra
VIPER tutor
US$8.00 /15 minI love technology and mobile devices! I’m a software engineer specialized in iOS and iPadOS development, with 7+ years of experience. Samuel is a software and computer science engineer with a strong passion for mobile platforms and over eight years of experience in iOS development. He specializes in using Apple technologies, including iOS SDKs and APIs, the Xcode IDE, and web systems such as App Store Connect and the Apple Developer Member Center—effectively working across most of Apple’s mobile ecosystem, encompassing software, hardware, and services. While Samuel primarily writes code in Swift, many of his past projects have been developed in Objective-C. He has successfully led mobile projects built from the ground up, which are now used by millions of users. His work includes integrating payment systems into iOS applications and developing reusable Objective-C frameworks that simplify access to complex network systems for other developers.
Rodrigo Lopes
VIPER tutor
US$9.00 /15 minA passionate mobile developer with more than 7 years of professional experience working as a team leader and a software engineer, with specialization in Android native and Flutter. Rodrigo enjoys one opportunity where he can contribute effectively with his experience. Curious developer who is constantly learning and a cryptocurrency enthusiast in my free time. Likes to share his experience and talking about the challenges he faces via blog and code meet-ups.
Teguh Hidayatullah
VIPER tutor
US$15.00 /15 min* IOS Developer with 10 years experience. I have 10++ years experience as iOS Dev on different industries under my belt. Well versed in Swift and Objective C and have great knowledge on how to build intuitive UI/UX. * Publish my own iOS app on AppStore. I currently have 2 apps (and more coming up) on App Store that I designed, code, and publish myself. I use Firebase Realtime Database for the server. * High sense of product ownership. When working as a team I not only do what I told, but also make sure my team understand why we do it and what impact it will give to our customers * Have regular high paying clients from all over the world * Can communicate effectively in written and oral English
Robert Gacsi
VIPER tutor
US$15.00 /15 minI have been working as a native iOS developer since 2012 and I use Swift from its beginning (2014). Over these years I have gained many work experiences and because of this I can work fast and precise. My code is clean, well-structured and easy to read. I can build whole iOS applications from scratch with wide range of features as well as designs. In the past couple of years I had the chance to try myself out in several different areas of iOS mobile application development, like developing: - CRM system - Chat client - Logic games - Vehicle trader application - E-wallet application for a bank - Educational application - TV streaming application - Multifunctional Social application Because of this, it doesn't really matter what kind of project I'm working on - anything can catch my interest but I like well built and good looking app designs the most.
Find your personal VIPER tutor on Codementor today 
Users love our VIPER tutors
See the power of our VIPER tutors through glowing user reviews that showcase their successful VIPER learning journeys. Don't miss out on top-notch VIPER training.
“Olajide was very patient and answered all my questions. He also asked questions here and there to make sure I understood or if I needed any clarification. Thank you, Olajide for your help and patience!“
Suji Hancock / Apr 2025
Olajide Olanrewaju
VIPER tutor
“John held a helpful session in which we realized my ask was larger than we both anticipated. We talked through a plan of connecting Supabase databases to a closed-community website project I needed. He patiently talked through expectations of the project and asked questions that were essential for it's functionality. I'd recommend John as mentor and project partner.“
Tasmia Noor / Apr 2025
John Oladele
VIPER tutor
“I had a great experience working with Alan. He was knowledgeable in CSS and was able to get to the root of the issue I was facing. He was able to to iterate through solutions efficiently until we found the right fix, and was friendly, communicative, and easy to collaborate with throughout the process. Highly recommend!“
Jessica Alberto / May 2025
Alan Santos
VIPER tutor
“I asked Lucas to take a look at my job interview requirements, code and final result. I had failed the interview and wanted to understand why. He analyzed my code and prepared documentation showing me the issues using levels from low to critical. He also explained everything, including the possible interviewer expectations, and gave pointers on how to improve. Very satisfied with the service.“
Dio Beis / May 2025
Lucas Meine
VIPER tutor
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We'll help connect you with a VIPER tutor that suits your needs.
Find the most suitable VIPER tutor by chatting with VIPER experts.
Arrange regular session times with VIPER tutors for one-on-one instruction.
Frequently asked questions
How to learn VIPER?
Learning VIPER effectively takes a structured approach, whether you're starting as a beginner or aiming to improve your existing skills. Here are key steps to guide you through the learning process:
- Understand the basics: Start with the fundamentals of VIPER. You can find free courses and tutorials online that cater specifically to beginners. These resources make it easy for you to grasp the core concepts and basic syntax of VIPER, laying a solid foundation for further growth.
- Practice regularly: Hands-on practice is crucial. Work on small projects or coding exercises that challenge you to apply what you've learned. This practical experience strengthens your knowledge and builds your coding skills.
- Seek expert guidance: Connect with experienced VIPER tutors on Codementor for one-on-one mentorship. Our mentors offer personalized support, helping you troubleshoot problems, review your code, and navigate more complex topics as your skills develop.
- Join online communities: Engage with other learners and professionals in VIPER through forums and online communities. This engagement offers support, new learning resources, and insights into industry practices.
- Build real-world projects: Apply your VIPER skills to real-world projects. This could be anything from developing a simple app to contributing to open source projects. Using VIPER in practical applications not only boosts your learning but also builds your portfolio, which is crucial for career advancement.
- Stay updated: Since VIPER is continually evolving, staying informed about the latest developments and advanced features is essential. Follow relevant blogs, subscribe to newsletters, and participate in workshops to keep your skills up-to-date and relevant.
How long does it take to learn VIPER?
The time it takes to learn VIPER depends greatly on several factors, including your prior experience, the complexity of the language or tech stack, and how much time you dedicate to learning. Here’s a general framework to help you set realistic expectations:
- Beginner level: If you are starting from scratch, getting comfortable with the basics of VIPER typically takes about 3 to 6 months. During this period, you'll learn the fundamental concepts and begin applying them in simple projects.
- Intermediate level: Advancing to an intermediate level can take an additional 6 to 12 months. At this stage, you should be working on more complex projects and deepening your understanding of VIPER’s more advanced features and best practices.
- Advanced level: Achieving proficiency or an advanced level of skill in VIPER generally requires at least 2 years of consistent practice and learning. This includes mastering sophisticated aspects of VIPER, contributing to major projects, and possibly specializing in specific areas within VIPER.
- Continuous learning: Technology evolves rapidly, and ongoing learning is essential to maintain and improve your skills in VIPER. Engaging with new developments, tools, and methodologies in VIPER is a continuous process throughout your career.
Setting personal learning goals and maintaining a regular learning schedule are crucial. Consider leveraging resources like Codementor to access personalized mentorship and expert guidance, which can accelerate your learning process and help you tackle specific challenges more efficiently.
How much does it cost to find a VIPER tutor on Codementor?
The cost of finding a VIPER tutor on Codementor depends on several factors, including the tutor's experience level, the complexity of the topic, and the length of the mentoring session. Here is a breakdown to help you understand the pricing structure:
- Tutor experience: Tutors with extensive experience or high demand skills in VIPER typically charge higher rates. Conversely, emerging professionals might offer more affordable pricing.
- Pro plans: Codementor also offers subscription plans that provide full access to all mentors and include features like automated mentor matching, which can be a cost-effective option for regular, ongoing support.
- Project-based pricing: If you have a specific project, mentors may offer a flat rate for the complete task instead of an hourly charge. This range can vary widely depending on the project's scope and complexity.
To find the best rate, browse through our VIPER tutors’ profiles on Codementor, where you can view their rates and read reviews from other learners. This will help you choose a tutor who fits your budget and learning needs.
What are the benefits of learning VIPER with a dedicated tutor?
Learning VIPER with a dedicated tutor from Codementor offers several significant benefits that can accelerate your understanding and proficiency:
- Personalized learning: A dedicated tutor adapts the learning experience to your specific needs, skills, and goals. This personalization ensures that you are not just learning VIPER, but exceling in a way that directly aligns with your objectives.
- Immediate feedback and assistance: Unlike self-paced online courses, a dedicated tutor provides instant feedback on your code, concepts, and practices. This immediate response helps eliminate misunderstandings and sharpens your skills in real-time, making the learning process more efficient.
- Motivation and accountability: Regular sessions with a tutor keep you motivated and accountable. Learning VIPER can be challenging, and having a dedicated mentor ensures you stay on track and continue making progress towards your learning goals.
- Access to expert insights: Dedicated tutors often bring years of experience and industry knowledge. They can provide insights into best practices, current trends, and professional advice that are invaluable for both learning and career development.
- Career guidance: Tutors can also offer guidance on how to apply VIPER in professional settings, assist in building a relevant portfolio, and advise on career opportunities, which is particularly beneficial if you plan to transition into a new role or industry.
By leveraging these benefits, you can significantly improve your competency in VIPER in a structured, supportive, and effective environment.
How does personalized VIPER mentoring differ from traditional classroom learning?
Personalized VIPER mentoring through Codementor offers a unique and effective learning approach compared to traditional classroom learning, particularly in these key aspects:
- Customized content: Personalized mentoring adapts the learning material and pace specifically to your needs and skill level. This means the sessions can focus on areas where you need the most help or interest, unlike classroom settings which follow a fixed curriculum for all students.
- One-on-one attention: With personalized mentoring, you receive the undivided attention of the tutor. This allows for immediate feedback and detailed explanations, ensuring that no questions are left unanswered, and concepts are fully understood.
- Flexible scheduling: Personalized mentoring is arranged around your schedule, providing the flexibility to learn at times that are most convenient for you. This is often not possible in traditional classroom settings, which operate on a fixed schedule.
- Pace of learning: In personalized mentoring, the pace can be adjusted according to how quickly or slowly you grasp new concepts. This custom pacing can significantly enhance the learning experience, as opposed to a classroom environment where the pace is set and may not align with every student’s learning speed.
- Practical, hands-on learning: Mentors can provide more practical, hands-on learning experiences tailored to real-world applications. This direct application of skills is often more limited in classroom settings due to the general nature of the curriculum and the number of students involved.
Personalized mentoring thus provides a more tailored, flexible, and intensive learning experience, making it ideal for those who seek a focused and practical approach to mastering VIPER.
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