Bogdan Pashchenko, Developer in Dnipro, Dnipropetrovsk Oblast, Ukraine

Bogdan Pashchenko

Software Developer

Dnipro, Dnipropetrovsk Oblast, Ukraine
Toptal Member Since
May 7, 2020

Bogdan is an expert iOS engineer with seven years of experience and thirteen years of overall experience in IT. He's focused solely on iOS contracting but knowledgeable in adjacent areas. Bogdan has worked on a number of projects, both small and large types, and has successfully seen many projects to completion. He is excited when his skills make a difference and takes pride when he can find a reliable and elegant solution for a complex problem.

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Jira, Trello, MacOS, Metal, Core Data, APIs, Address Book, Core Motion...
Medeloop Inc.
iOS, Swift, Apple HealthKit, ResearchKit, CareKit, SwiftUI, Mobile Apps...
MaxSold Inc
Swift, Slack, Jira, Amazon Web Services (AWS), GitHub...


iOS - 10 yearsUIKit - 7 yearsSwift - 7 yearsCore Data - 6 yearsStoreKit - 6 yearsObjective-C - 4 yearsCore Image - 3 yearsMetal - 2 years


Dnipro, Dnipropetrovsk Oblast, Ukraine



Preferred Environment

Trello, Git, Xcode, MacOS

The most amazing...

...iOS app infrastructure I've built was for a technologically-complex product that withstood high load with 99.99% crash-free sessions.

Work Experience

2012 - PRESENT

iOS Contractor
  • Contributed to the completion of over 30 various iOS projects.
  • Achieved a 99.99%+ crash-free session rate on a high-load product.
  • Engineered a high-performance image and video processing infrastructure for an iOS app.
Technologies: Jira, Trello, MacOS, Metal, Core Data, APIs, Address Book, Core Motion, Core Animation, Core Graphics, AVFoundation, UIKit, Git, Xcode, Fastlane, OpenGL ES, Message UI, Agile, Objective-C, MapKit, StoreKit, Cocoa Touch, iOS, CircleCI, TestFlight, User Interface (UI), User Experience (UX), GraphQL, Figma, UI Animation, Widgets, Mobile Apps, Apple Design, iOS Native Libraries, Image Manipulation, Video Editing, gRPC
2022 - 2022

iOS/Swift Developer

Medeloop Inc.
  • Implemented a number of UI-focused screens according to designs using SwiftUI.
  • Reworked product architecture to fit client's needs, extracted internal frameworks, applied clean architecture, and set up a way to manage third parties.
  • Investigated the feasibility of using ResearchKit for a specific feature on this project and implemented MVP.
Technologies: iOS, Swift, Apple HealthKit, ResearchKit, CareKit, SwiftUI, Mobile Apps, User Experience (UX), Apple Design
2021 - 2021

Lead iOS Engineer

MaxSold Inc
  • Took over an iOS project from the 3rd party vendor.
  • Re-engineered the codebase for product stability and produced several major releases.
  • Participated in IT team architecture and engineering process review sessions and provided inputs for further considerations by the company technical leadership people.
Technologies: Swift, Slack, Jira, Amazon Web Services (AWS), GitHub, Model View Viewmodel (MVVM), Apple Push Notifications, XML, REST APIs, iOS
2008 - 2011

Project Coordinator, Project Manager

  • Developed a custom process based on Agile and the defined methodology of the interoperation of two corporate project teams, the customer, and other vendors.
  • Facilitated technical analysis for the sales team during the engagement process.
  • Facilitated the Agile process for a 7 to 12-person team and managed interests resolution of the project team, the higher company management, and the customer product team.
Technologies: Trello, Scrum, Agile, Microsoft Excel, Jira, Microsoft Project, Mobile Apps, User Experience (UX)
2007 - 2008

Junior C++ Developer

  • Developed a testing framework based on requirements from senior staff, specifically tailored for the product, development, and QA teams.
  • Made changes and fixed bugs in the Win driver (kernel) part of the product.
  • Reverse-engineered (disassembled) a binary using IDA Pro.
Technologies: Jira, WinAPI, C#, C++


Image and Video Processing App
This product is a sophisticated image and video processing app, and it allows you to create professional-looking photos and apply interesting effects with a few taps. This product was built from scratch, and I've had the privilege to lay down technological foundations and implement around 90% of the product over the course of two years.

Social Network App
A role model-based social network designed for students and aspiring young professionals to discover top careers that match their interests and get inspiration and guidance from successful professionals. As an iOS engineer on this project, I got an existing codebase, implemented new features, and provided maintenance for existing ones.

Analogue Camera App

An app that emulates a real disposable camera and mimics its analog feel. This project was started from scratch. I've been an iOS engineer on this product and had the privilege to build over 90% of its features.

Overhaul, Stability Improvements, and Roadmap Development for an iOS App

I took over a Swift product, overhauled it, and touched every class and file to make the product stable. After implementing a number of features, I performed a planned transition of the project to the maintenance personnel.



Swift, Swift 4, Swift 5, Objective-C, C++, C#, XML, GraphQL


UIKit, Cocoa Touch, StoreKit, iOS SDK, Core Data, Core Motion, MapKit, Address Book, SwiftUI, Metal, Message UI, ResearchKit, CareKit, gRPC


iOS Native Libraries, Core Image, Core Graphics, Core Animation, WinAPI, OpenGL ES, REST APIs


Mobile Development, Agile, Scrum, Model View Viewmodel (MVVM)


iOS, Firebase, MacOS, Amazon Web Services (AWS)


User Interface (UI), UI Animation, Mobile Apps, Direct to Consumer (D2C), Image Manipulation, APIs, AVFoundation, Video Editing, User Experience (UX), Widgets, Apple Design


Git, TestFlight, Figma, Fastlane, Xcode, Trello, Microsoft Project, Jira, Microsoft Excel, Slack, GitHub, Apple Push Notifications, CircleCI, Apple HealthKit


2005 - 2009

Bachelor's Degree in Computer Science

DNUZT - Dnipropetrovsk, Ukraine