Michael Mankus, Software Developer in Szczecin, Poland
Michael Mankus

Software Developer in Szczecin, Poland

Member since February 23, 2022
Michał started programming at the age of 14. He has over a decade of practice in a vast number of environments, both technical and cultural. He is experienced with iOS, Flutter, Node.js, back ends, gaming, DevOps, web security, and more. Michal has worked with teams across the globe, in the USA, Eastern and Western Europe, and the Middle East. He has self-started multiple projects and is a hardworking, team player, empathetic, and detail-oriented professional.
Michael is now available for hire




Szczecin, Poland



Preferred Environment

Swift, TypeScript, Node.js, Docker, NestJS, UIKit, Express.js, MySQL

The most amazing...

...thing I've developed is the most popular RP GTA game mode in Poland in high school. I made money from it and learned a lot of soft and technical skills.


  • Mobile and Back-end Engineer

    2016 - PRESENT
    • Made a Flutter NFC personal card for Formula 2 racing driver Louis Delétraz. Created a complete mobile and back-end solution and received very uplifting recommendations for excellent, smooth, and bug-free delivery.
    • Developed a Yacht monitoring system for Stocznia Darłowo using Raspberry PI for back-end reading sensors and an iOS front-end app working offline over a local network.
    • Developed a fashion-oriented app in Flutter with push notifications for clothes drop alerts. It reached a high 4.6 rating in the app store after 100 reviews.
    Technologies: Flutter, Node.js, iOS, Swift, Cloud, Amazon Web Services (AWS), UIKit, NestJS, Express.js, Python 3, Raspberry Pi, Push Notifications, Apple Push Notifications, OneSignal, Model View Viewmodel (MVVM), JavaScript, TypeScript, CocoaPods, Carthage, Realm, Xcode, Swift 4, Swift 5, Swift 3, Swift 2, Swift 1, Native Mobile Apps, Mobile Apps, Mobile App Development, WebSockets, RxSwift, Objective-C
  • iOS Engineer

    2022 - 2022
    Reddit, Inc.
    • Implemented two experiments that led to a 3% higher ad revenue and a 2% increase in good visits in subreddits without any bugs, crashes, and delays.
    • Rewrote the VideoPlayer module to use a flex layout for improved performance.
    • Proposed a feature that received a lot of applause and was planned into the roadmap.
    Technologies: Swift, iOS, Xcode, Swift 4, Feature Planning, Objective-C, Model View Viewmodel (MVVM), Jira, Figma, Scrum, Firebase, GraphQL, Swift 5, Swift 3, Swift 2, Swift 1, Native Mobile Apps, A/B Testing, Mobile Apps, Mobile App Development
  • Core Team Senior iOS Software Engineer

    2020 - 2022
    Middle Eastern Fintech (Digital Bank)
    • Developed a new digital bank from scratch, working since sprint zero in the core team alongside the iOS chapter lead as his right hand with 14 other iOS software engineers in the whole chapter.
    • Designed for all squads multiple core solutions like a form validation system, reusable UI components and styling, widgets, and more.
    • Implemented a highly secure onboarding and login flow for banking purposes.
    • Prototyped basic OneSignal push notifications iOS and Node.js integration for demo purposes as per urgent request of the head of Development. The whole integration took a few hours and is publicly available on GitLab.
    • Contributed and reviewed Spring Boot Java code. Fixed urgent crash in the onboarding while all back-end engineers were unavailable.
    Technologies: Swift, UIKit, Model View Viewmodel (MVVM), Web Security, CocoaPods, Xcode, Swift 4, Swift 5, Swift 3, Swift 2, Swift 1, Native Mobile Apps, A/B Testing, Mobile Apps, Mobile App Development
  • Senior iOS Software Engineer and Solution Architect

    2020 - 2020
    • Created a business proof coordinator pattern for navigation around the app, a robust and reusable form module, generic listing, fancy animated quick actions module, and more.
    • Managed communication between the business team and the engineering team by writing user stories, tracking work in Jira, and doing weekly work progress reports.
    • Fixed multiple memory leak issues and optimized the navigation flow in the existing application, reducing memory usage from over 500 MB to less than 60 MB.
    Technologies: Swift, UIKit, Model View Viewmodel (MVVM), CocoaPods, Carthage, Xcode, Swift 4, Swift 5, Swift 3, Swift 2, Swift 1, Native Mobile Apps, VIPER Architecture, Mobile Apps, Mobile App Development, RxSwift
  • iOS Software Engineer

    2018 - 2020
    • Improved a few algorithms from O(n^2) and O(n^3) to O(n).
    • Improved an image processing algorithm from 3s to 0.06s computing time.
    • Managed to constantly be ahead of time with features delivery and without significant bugs.
    Technologies: Swift, UIKit, Web Security, CocoaPods, Carthage, Xcode, Swift 4, AVFoundation, Streaming, AirPlay, Swift 5, Swift 3, Swift 2, Swift 1, Native Mobile Apps, Mobile Apps, WebSockets, Video Streaming, RxSwift, Objective-C


  • DevGaming | Gaming Platform

    DevGaming is a commercial role-play game based on Multi Theft Auto (MTA) SDK multiplayer for GTA San Andreas.

    It is visited by nearly 2,000 people daily, and over 300 users play simultaneously every evening. Its highest record has been 650.

    • Architected and developed game-play in Lua C++ with high efficiency and security in mind. It's had a year-to-year growth of popularity and revenue.
    • Profiled the code and improved performance in critical areas.
    • Built and supervised a remote team of five developers and 30 game masters and moderators.
    • Introduced Scrum and Jira for developers, and currently serving in the role of PO, scrum master, and code reviewer.
    • Brought multiple young programmers into professional software engineering careers.
    • Monetized the freemium game by developing two currencies, encouraging 80% of players to use paid services and items.
    • Maintained a balanced economy encompassing a real estate and vehicles market, organized crime, police, court trials, diverse businesses, furnishing of buildings, and tuning cars.

  • Amployed.io Niche Job Boards Platform

    • Developed configurable and scalable software to bootstrap an advanced job board website in a matter of a day.
    • Created an innovative matching algorithm for passive job recruitment.

    As a result of this platform, a Formula 1 engineer with 20 years of experience managed to find a job in the International Federation of Motorsport (FIA) through our motorsport job board.

  • Weighter

    Weighter is a Swift written application used to record users' fitness progress at the gym. The main goal was to make this app as easy as using a notebook.

    In January 2018, Weighter was the top app in fitness and the second-highest app in all paid apps in Poland. It presented steady sales without marketing, long-term users, and a 4.6 rating in the Polish App Store.

    • Implemented the graph drawing feature from scratch and managed full offline support using a local database.

  • Czynna Niedziela

    Czynna Niedziela is a mobile app made by two friends and me for searching nearby grocery stores that are open on Sunday in Poland. Project discontinued.

    It had 15,000 Android and iOS downloads in the first month since the release and a 4,9 rate with over 100 voters on iOS after three months of development.

    I was interviewed about the app on two radio stations, RMF MAXX and Radio Szczecin, and on a national TV station called TVN Business.

    • Designed, developed, and released it in just four weeks. It has a smooth interface even with 1,000 places to display.

  • Short URL for iOS Safari

    A plugin to generate short URLs for iOS 15 Safari developed in JavaScript.
    It has a 5.0 rating and many day-to-day downloads in the App Store.

    • Used Bit.ly REST API for generating short URLs of the currently viewed website. It supports iPhone, iPad, and macOS.

  • Wirepool Token

    BEC20 token for decentralized stakeholding of assets, rent, apps, and more, based on the Binance smart chain.

    You can read more in the pitch here: https://www.wirepool.finance/wirepool-pitch.pdf.

    The project was canceled.


  • Languages

    Swift, Lua, Swift 4, Swift 1, Swift 2, Swift 3, Swift 5, TypeScript, JavaScript, SQL, Objective-C, PHP, Python 3, GraphQL
  • Frameworks

    UIKit, NestJS, SwiftUI, Express.js, Flutter, Core Location
  • Tools

    Xcode, NGINX, Apple Push Notifications, OneSignal, Jira, Figma, Apple HealthKit
  • Paradigms

    Model View Viewmodel (MVVM), Scrum, VIPER Architecture
  • Platforms

    iOS, Docker, Amazon Web Services (AWS), Raspberry Pi, Firebase, Ethereum, Blockchain
  • Other

    Native Mobile Apps, Mobile Apps, Mobile App Development, IT Project Management, Algorithms, Memory Management, Computer Science, Software Project Management, A/B Testing, Monetization, WebSockets, Video Streaming, Web Security, Safari Extensions, Cloud, Push Notifications, Location Services, English, Carthage, Combine, AVFoundation, Feature Planning, Streaming, AirPlay, ERC-20, Crypto, Cryptocurrency
  • Libraries/APIs

    Node.js, CocoaPods, DirectX, Sockets, iOS Extensions, HealthKit, RxSwift
  • Storage

    MySQL, PostgreSQL, SQLite, MongoDB, Realm, PostGIS


  • Engineer's Degree in Computer Science
    2014 - 2018
    West Pomeranian University of Technology - Szczecin, Poland


  • TOEIC Gold 215329 (C1/C2)
    APRIL 2016 - PRESENT
    ETS GLobal

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