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Petr Sima
Combine tutor
US$40.00 /15 minAvailable in all timezones. Excelent English. I removed my old bio because it becomes outdated quickly. By now I've done enough to be able to say: I've really done a lot 🙂. I provide a full range of services to meet all your Swift needs.
- Combine
- Mobile App Development
- Teaching Programming
- Ruby
- Android
- Bash
- Cocoa Touch
- OOP
- Generics
- MVVM
- Jenkins
- Compiler errors
- UIKit
- Continuous Integration
- Apple
- Document
- Firebase
- MVC
- Programming
- Patterns
- TestFlight
- Tutoring
- Teaching
- Reactive
- Research
- Compiler Construction
- Tutorial
- Objective-C
- Mentoring
- Refactor
- Apple Watch
- Realm
- Circleci
- Swift
- Code Signing
- Fastlane
- Protocol oriented programming
- watchOS
- Backendless
- Serverless
- iOS
- RxSwift
- Build server
- Ios10
- ReactiveSwift
- Value types
- Reactivecocoa
- Software architecture
- Functional Programming
Christian Ray Leovido
Combine 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.
Depa
Combine tutor
US$20.00 /15 minI'm a Lead Mobile Developer with a track record of delivering creative and engaging solutions for various industries, including fintech (Brubank), retail (Apple), online collaboration (Mural), machine learning (Austrian Institute of Technology), education (Mimo) and consulting firms (Theorem & Wolox). I have a strong educational background, with a degree in software engineering from ITBA (Argentina, 2017) and a master's degree in software engineering from UAS Technikum Wien (Austria, 2018). I'm currently pursuing a degree in philosophy at USAL since 2021. I'm interested in technical lead positions and have a proven track record in: \- Mentoring and coaching other developers (https://www.codementor.io/franciscodepascuali) \- Conducting code reviews \- Assessing candidates through technical interviews. \- Leading and proposing architectural decisions for client-facing problems. \- Working with complex problems, such as sockets in online collaboration, augmented reality apps, and - Apple's proprietary technology (https://developer.apple.com/documentation/multipeerconnectivity). \- Delivering workshops and talks on Combine, Rx, App Architecture, Coordinators, and Unit Testing. \- Configuring and building automation workflows for different apps using Bitrise, Jenkins and Fastlane. - I've documented some of my work on my blog https://deep-thought.netlify.com/posts/using-docker-fastlane. I'm proud of my professional accomplishments, which include: \- An honorable mention at UAS Technikum Wien for my Master Thesis in Machine Learning \- First place in a hackathon organized by Wolox featuring an app that allows you to control and fight against other drones \- Talks at the SwiftBA meetup. \- Contributed to Brubank (4.7 stars in App Store), Mural (4.8 stars), Apple (in retail technologies non-disclosable work) and Mimo (4.8 stars). I'm proficient in various technologies, including: \- Over 4 years of experience with React Native. \- Over 8 years of experience with Swift, SwiftUI, and Objective-C, including mastery of Rx technologies (RxSwift and Combine) and application of multiple design patterns (Coordinators, MVC, MVVM, Unit testing, crash reporting, CI, automation, storyboards and programmatic views). \- Over 2 years of experience in Python and Machine Learning (AI), where I worked and helped advance the state of the art in synthetic dataset generation for object detection. \- Other tools like Firebase, Firestore, Splunk, and Bitrise (CI). Please feel free to reach out if you have any questions or would like to learn more about me. Cheers! Depa
Igor Tarasenko
Combine tutor
US$40.00 /15 minI transform business challenges into breakthrough mobile experiences by fusing cutting-edge AI with sophisticated iOS engineering. **DEEP EXPERTISE THAT DELIVERS RESULTS:** • 13+ years developing enterprise-grade iOS solutions using Swift, SwiftUI, and UIKit • Specialized in integrating LLMs, ML models, and AI systems into production applications • Former Senior Engineer at Uber (wallet team) and lead developer for nu.nl (Netherlands' largest news platform) • Creator of open-source Whisperboard (voice transcription app with on-device AI processing) **WHAT SETS MY WORK APART:** I don't just code – I architect transformative solutions with meticulous attention to scalability, performance, and business impact. My projects consistently deliver enhanced user experiences while optimizing development workflows. My recent innovations focus on revolutionizing productivity through AI automation pipelines, custom LLM implementations, and Stable Diffusion integration – creating tools that provide unmatched competitive advantages. **WHY EXECUTIVES & PRODUCT TEAMS CHOOSE MY EXPERTISE:** • Technical excellence combined with business acumen and strategic vision • End-to-end delivery capability – from initial concept to deployed, scalable solutions • Predictable execution through rigorous planning and architectural foresight • Clear communication and commitment to measurable outcomes I've transitioned beyond standard development to focus on building exceptional digital products that create freedom, efficiency, and measurable ROI. My approach blends technical mastery with an unwavering commitment to your business objectives. **READY TO ELEVATE YOUR MOBILE & AI STRATEGY?** Let's discuss how my expertise can deliver exceptional value to your organization. **SIGNATURE PROJECTS:** • [Whisperboard](https://apps.apple.com/us/app/whisperboard/id1661442906) - Revolutionary open-source voice transcription app powered by AI • [GetLost](https://apps.apple.com/us/app/getlost-explore-consciously/id1584133759) - Feature-rich social platform for travelers with location intelligence • nu.nl - Developed core features for the Netherlands' highest-traffic news application • Uber - Engineered critical wallet functionality used by millions globally tarasenko.dev
- Combine
- Mobile UI
- Payment systems
- CI/CD
- Mobile App Development
- Security software
- AI
- API
- UIKit
- Multi platform
- DI
- Concurrent Programming
- Objective-C
- Swift
- App Store Optimization
- Cloud Services
- iOS
- RxSwift
- Recommender Systems
- UX/UI Design
- Chatbot
- Distributed Systems Architecture
- Performance Optimization
- API Integration
- Cross-Platform Development
- OpenAI
- Software architecture
- Langchain
- LLM
- UX design
- Whisper
- ComfyUI
Arbi DerHartunian
Combine tutor
US$15.00 /15 minSeasoned iOS Engineer with 10+ years of experience in mobile architecture and a strong track record of contributing to high-impact features. Skilled in driving end-to-end development and performance optimization . Actively seeking a Senior Engineer or Individual Contributor role to leverage expertise in building scalable, high-quality iOS applications. I love the idea of Rapid Application Development and have followed it through out my career as a software developer. I am an expert iOS application development with over 13 years of experience. I am highly talented and skilled in problem solving and understanding complex and large code base. I love working with: ⭐ C++ ⭐ iOS application development (iPhone, iPad, iWatch, tvOS) ⭐ JavaScript ⭐ Swift /ObjC/React Native/Flutter ⭐ SwiftUI and PYTHON Let me help you get unstuck in your coding project dealing with iOS , Swift, SwiftUI using Autolayout, or complex logic that you cannot understand. I am expert in all design pattern including using Combine, RXSwift, MVVM, MVC, and using CoreData. I also am expert in C++, Javascript, React. and building iOS mobile application.
Rinkal C
Combine tutor
US$10.00 /15 minI am a senior iOS developer mostly working on Swift. Learning SwiftUI & Flutter in free time. I Love to explore new things. I don't know everything but I can give my best to anything!
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Users love our Combine tutors
See the power of our Combine tutors through glowing user reviews that showcase their successful Combine learning journeys. Don't miss out on top-notch Combine training.
“I had a great experience, even when English is not my main language, he was really good at explaining all the issues and very patient with my level at programming.“
Gabriela Hernández / Nov 2024
Tolga Varol
Combine tutor
“Ben is an absolute treasure. I threw some very complex Combine code at him and he was able to see through the complexity, ask the right questions, and offer instant improvements. One of the best mentors I've had on the site to date!“
Maximilian Maksutovic / Apr 2022
Ben Gottlieb
Combine tutor
“Intro call for a personal project of mine went very well. It is evident he is a professional, answered my questions clearly and gave good advice and was easy to talk to. I talk in lots of circles and tangents but he was able to link back to previous points and follow and expand the picture. I would recommend.“
Jonathan / Jul 2025
Olamide Soyoye
Combine tutor
“I had a fantastic session with Erum focused on understanding the internals of the Spark UI. She explained complex concepts like stages, tasks, and shuffles in a very clear and visual manner. What really stood out was how she connected the theory with real Spark execution graphs and showed me how to interpret performance metrics effectively. Erum also guided me through practical optimization techniques—like how to reduce shuffle overhead, how Spark breaks jobs into stages, and how to use partitioning intelligently. Highly recommended for anyone needing deep, hands-on Spark guidance“
SAM GON / Jul 2025
Erum Mehmood
Combine tutor
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We'll help connect you with a Combine tutor that suits your needs.
Find the most suitable Combine tutor by chatting with Combine experts.
Arrange regular session times with Combine tutors for one-on-one instruction.
Frequently asked questions
How to learn Combine?
Learning Combine 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 Combine. 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 Combine, 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 Combine 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 Combine through forums and online communities. This engagement offers support, new learning resources, and insights into industry practices.
- Build real-world projects: Apply your Combine skills to real-world projects. This could be anything from developing a simple app to contributing to open source projects. Using Combine in practical applications not only boosts your learning but also builds your portfolio, which is crucial for career advancement.
- Stay updated: Since Combine 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 Combine?
The time it takes to learn Combine 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 Combine 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 Combine’s more advanced features and best practices.
- Advanced level: Achieving proficiency or an advanced level of skill in Combine generally requires at least 2 years of consistent practice and learning. This includes mastering sophisticated aspects of Combine, contributing to major projects, and possibly specializing in specific areas within Combine.
- Continuous learning: Technology evolves rapidly, and ongoing learning is essential to maintain and improve your skills in Combine. Engaging with new developments, tools, and methodologies in Combine 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 Combine tutor on Codementor?
The cost of finding a Combine 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 Combine 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 Combine 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 Combine with a dedicated tutor?
Learning Combine 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 Combine, 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 Combine 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 Combine 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 Combine in a structured, supportive, and effective environment.
How does personalized Combine mentoring differ from traditional classroom learning?
Personalized Combine 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 Combine.
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