Max is available for hire
Hire MaxMax Kraev
Verified Expert in Engineering
iOS Developer
Barcelona, Spain
Toptal member since September 30, 2022
Bio
Max is a proficient and business-oriented engineer with over 9 years of experience in the fintech and well-being industries. Comfortable in Agile environments, he enjoys working on open-source projects and building automated workflows and CI/CD pipelines.
Portfolio
Platacard
Swift, Kotlin, Ansible, Automation
Palta Inc. | WeatherWell
Swift, GitHub Actions, Fastlane, iOS, MacOS, Xcode, GitHub, Ruby, UIKit...
Vivid Money
Swift, GitLab CI/CD, Ruby, Ansible, VIPER Architecture, Python 3, MacOS, Xcode...
Experience
- Swift - 5 years
- iOS - 5 years
- Ruby - 4 years
- MacOS - 3 years
- RxSwift - 3 years
- Firebase - 3 years
- SwiftUI - 2 years
- Python 3 - 1 year
Work Experience
Mobile DevOps
2022 - PRESENT
Platacard
- Architected the main screen foundation to parallelize feature development and launch the first version in six months.
- Automated and sped up developer workflows with internal CLI tools and a macOS app.
- Set up and maintained our own park of 10 build agents with Ansible.
- Drove the Swift‑first path for all internal tools, including deploy and app signing. Replaced fastlane with our own toolset.
Technologies: Swift, Kotlin, Ansible, Automation
Lead iOS Engineer
2021 - 2022
Palta Inc. | WeatherWell
- Architected core mechanics and modules (coordinators and CleanSwift, reusable data sources, analytics wrapper for multiple providers).
- Built CI/CD infrastructure with GitHub Actions and Fastlane.
- Set up per‐module test targets with test plans and covered the core functionality with unit tests.
- Held planning and grooming sessions for an iOS team of three engineers.
Technologies: Swift, GitHub Actions, Fastlane, iOS, MacOS, Xcode, GitHub, Ruby, UIKit, Mobile Apps, API Integration, Programming, Clean Architecture, SwiftUI, Auto Layout, CocoaPods, Combine, Firebase, iOS Native Libraries, iOS SDK, Apple, App Store, APIs, SDKs, Figma, Animation, User Interface (UI), A/B Testing, Unit Testing, XCTest, CI/CD Pipelines, NoSQL, TestFlight, iOS Frameworks, Lottie, Lottie-iOS, Google Maps SDK, User Experience (UX), Core Animation, Mobile, React Native
Senior iOS Engineer
2020 - 2021
Vivid Money
- Tracked and optimized app‐wide performance metrics with Xcode Instruments and Grafana metrics.
- Implemented a block‐based scalable FAQ framework with partial HTML/CSS markup over the Intercom API.
- Contributed to CI/CD pipelines and development infrastructure.
Technologies: Swift, GitLab CI/CD, Ruby, Ansible, VIPER Architecture, Python 3, MacOS, Xcode, iOS, Fastlane, UIKit, Mobile Apps, API Integration, Carthage, Programming, Clean Architecture, Auto Layout, CocoaPods, Firebase, iOS Native Libraries, iOS SDK, Apple, App Store, APIs, SDKs, Figma, Animation, User Interface (UI), A/B Testing, Unit Testing, XCTest, Automated Testing, CI/CD Pipelines, GitLab, TestFlight, gRPC, iOS Frameworks, Lottie, Lottie-iOS, Google Maps SDK, User Experience (UX), Core Animation, Mobile, Video Streaming
iOS Engineer
2019 - 2021
SuperJob
- Created a performant chat module with server-sent events (SSE) real‐time updates.
- Implemented a CV/resume import from external resources.
- Automated a release pipeline for the employer app with TeamCity.
Technologies: Objective-C, Swift, RxSwift, TeamCity, Xcode, GitHub, Ruby, iOS, CocoaPods, Fastlane, UIKit, Mobile Apps, API Integration, Programming, Model View ViewModel (MVVM), Core Data, Auto Layout, iOS Native Libraries, iOS SDK, Apple, App Store, APIs, SDKs, Figma, User Interface (UI), Unit Testing, XCTest, Automated Testing, CI/CD Pipelines, TestFlight, iOS Frameworks, Google Maps SDK, User Experience (UX), Core Animation, Mobile
iOS Engineer
2018 - 2019
Apparat - Full-cycle Digital Agency
- Implemented a secure crypto wallet app from scratch with Apollo GraphQL.
- Navigated the Instagram private API to create an internal development tool.
- Created a MacBook touch bar app powered by Core Bluetooth.
Technologies: Swift, GraphQL, CocoaPods, Carthage, VIPER Architecture, MacOS, Xcode, Ruby, iOS, Fastlane, UIKit, Mobile Apps, API Integration, Programming, Model View ViewModel (MVVM), AVFoundation, Realm, Core Data, Auto Layout, Firebase, iOS Native Libraries, iOS SDK, Apple, App Store, APIs, SDKs, Animation, User Interface (UI), A/B Testing, TestFlight, iOS Frameworks, Google Maps SDK, User Experience (UX), Mobile
Front-end Engineer
2016 - 2018
Setmysails Inc.
- Integrated custom amoCRM solutions for different clients.
- Developed and supported websites based on Magento, OpenCart, and WordPress.
- Built landing pages for clients using HTML/CSS and JavaScript.
Technologies: Magento, OpenCart, CRM APIs, GitHub, Programming, API Integration, SDKs, User Experience (UX)
Project History
WeatherWell
An AI-driven weather tracker to mitigate negative health impact. Implemented from the ground up on a tight schedule, it had a solid and scalable foundation due to coordinated team effort and, specifically, my iOS contributions to core and platform mechanics.
MacBook Touch Bar Bluetooth Connector App
A Swift-based macOS application for connecting BLE devices to a MacBook with the Touch Bar. I implemented the app from scratch, including desktop UI, Touch Bar UI, and the connection mechanics with the Core Bluetooth framework.
Vivid Money
https://vivid.moneyMobile-first investments and banking super app for iOS and Android. During my time on a project as an iOS engineer, three feature teams reached their goals in user acquisition, reward mechanics, and customer support SLA.
Anchored Bottom Sheet – iOS Maps-like Sheet Presentation Module
https://github.com/havebeenfitz/anchoredbottomsheetCreated an open-source library to mimic iOS maps card presentation with anchor points. It was developed to support all available package managers: CocoaPods, Carthage, and Swift Package Manager. I was a sole developer. The repo is currently maintained.
Random Coffee Telegram Bot
Python-based Telegram application to match registered users in pairs based on their specified meeting format, either online or at the location. Deployed with AWS Lambda, with user data stored in DynamoDB. I was the sole engineer on this project and implemented all functionality.
Education
2009 - 2012
Specialization in Engineering Physics
Peter the Great St.Petersburg Polytechnic University - Saint Petersburg, Russia
Certifications
JUNE 2022 - PRESENT
Python Programming
Stepik.org
Skills
Libraries/APIs
iOS Native Libraries, Lottie-iOS, Core Animation, RxSwift, Google Maps SDK, CocoaPods
Tools
Xcode, GitHub, Fastlane, Auto Layout, GitLab, TestFlight, GitLab CI/CD, Ansible, TeamCity, Mathematica, Figma
Languages
Swift, Kotlin, Ruby, GraphQL, Python 3, Objective-C
Frameworks
UIKit, iOS SDK, iOS Frameworks, SwiftUI, Core Data, XCTest, gRPC, React Native, Core Bluetooth, Combine
Paradigms
Model View ViewModel (MVVM), Clean Architecture, Unit Testing, VIPER Architecture, Serverless Architecture, Automated Testing, Automation
Platforms
iOS, Firebase, Apple, MacOS, Mobile, Magento, OpenCart, AWS Lambda
Storage
Realm, NoSQL, Amazon DynamoDB
Other
Mobile Apps, API Integration, App Store, APIs, SDKs, User Interface (UI), CI/CD Pipelines, Lottie, User Experience (UX), AVFoundation, Animation, A/B Testing, Video Streaming, GitHub Actions, Carthage, CRM APIs, Applied Physics, Programming
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