Ivan Stelmakh

Experience

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  For.Rest paintball club

  Oct 2016 - Sept 2021

  Co-Founder

  Responsibilities:- organized and launched this paintball club from scratch.- working with foreign suppliers and searching for new suppliers of paintball equipment.- technical supporting of club equipment.- tactical planning, building, and controlling the company's budget.- managing sales and marketing activities.- communicating with clients and the provision of paintball services

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  Hillel Evo

  Sept 2019 - May 2020

  Java Developer

  Project: Auto Aid Advisor - it`s a web service that allows people to find the nearest car maintenance service using GPS.Technology stack: Java 11, Spring, Hibernate, PostgreSQL, H2, AWS, Jenkins, Jira, Gradle, Git, Postman, Swagger.Responsibilities:- designing and writing project modules: o Image module - allows users to save their images. Images saving to AWS S3. o Scheduler module - allows users to find the nearest free date and make an appointment with a car service.- working with AWS (EC2, S3, RDS) and AWS API.- writing unit-tests.- finding and fixing bugs.- doing code review. Show less

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  Kit Store

  Aug 2020 - Apr 2021

  Java/Android Developer

  Project: hyper-casual games, affiliate marketing software Technology stack: Java 8, Kotlin, Android SDK, LibGDX, LibKTX, Firebase (Firestore, Realtime Database, Analytics, Cloud Functions, Cloud Messaging, AdMob), AppsFlyer, OneSignal, AppMetrica, Facebook SDK, Room, Figma, Gradle, Git, Jira, Trello.Responsibilities: - creating hyper-casual games of different types (runner, picker, puzzle, etc.) from scratch using pure Java/Kotlin and own simple game engine, or special game engine like LibGDX, and using different architecture patterns like MVVM.- prototyping game logic and scenario.- prototyping and creating a style of game and game menus using Figma, and searching all game assets and music.- taking part in the development, improvement, and bug fixing of ours affiliate marketing service- integrating and setup into games all services described in the technology stack, and affiliate marketing service developed by our company. - reverse engineering of competitors. - doing code reviews of team members and help them to solve issues. Show less

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  Фриланс

  May 2021 - Jun 2021

  Java/Android Developer

  Project: Deutsche Garage - an application that helps users to find and collect information about car spare parts from website and help to register them when there is incoming at the warehouse.Technology stack: Java 8, Google ML Kit, Jsoup, OkHttp, AndroidX (Room, Camera, Browser, Paging, Data Binding), Gradle, Git. Responsibilities: - creating an application according to customer technical task.- creating a minimalistic design from scratch.- manual testing and bug fixing- adding new functionals, and code improvement from one to the next version of the application according to customer requirements and feedback. Show less

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  Infocus Company

  Jan 2022 - now

  Android Developer

  Project: concierge service mobile app for Infocus and Visa Technology stack: Kotlin, Dagger, Room, Retrofit, OkHttp, Glide, Firebase (FCM), Navigation, Paging, Material, Gradle, Postman, Figma, Git.Responsibilities: -leading all process of android development. -developing the application and architecture from scratch. -analyzing the requirements received from the customer with further research for optimal solutions, setting tasks for backend developers and implementing these requirements in the application. -developing custom views, animations, and other elements to improve UI/UX. -consulting back-end developers about mobile platform libraries, how they work, and how to integrate them onto server side. -manual testing of the application. -fixing bugs found by testers. Show less