I am a product-oriented Senior iOS Engineer with 6+ years of experience building high-load applications for FinTech, E-commerce, and marketplace platforms. I have delivered scalable solutions for millions of users (up to 27M MAU) and I enjoy transitioning legacy codebases to Swift, setting up CI/CD pipelines, and implementing Server-Driven UI. Based in Munich, I hold an unrestricted work permit (Blue Card) and can start immediately. I relocated to Germany and am actively improving my German (A1 level) while continuing to deliver high-quality iOS products and collaborating with international teams.…

Viktoriia Katalkina

PRO

I am a product-oriented Senior iOS Engineer with 6+ years of experience building high-load applications for FinTech, E-commerce, and marketplace platforms. I have delivered scalable solutions for millions of users (up to 27M MAU) and I enjoy transitioning legacy codebases to Swift, setting up CI/CD pipelines, and implementing Server-Driven UI. Based in Munich, I hold an unrestricted work permit (Blue Card) and can start immediately. I relocated to Germany and am actively improving my German (A1 level) while continuing to deliver high-quality iOS products and collaborating with international teams.…

Available to hire

I am a product-oriented Senior iOS Engineer with 6+ years of experience building high-load applications for FinTech, E-commerce, and marketplace platforms. I have delivered scalable solutions for millions of users (up to 27M MAU) and I enjoy transitioning legacy codebases to Swift, setting up CI/CD pipelines, and implementing Server-Driven UI.

Based in Munich, I hold an unrestricted work permit (Blue Card) and can start immediately. I relocated to Germany and am actively improving my German (A1 level) while continuing to deliver high-quality iOS products and collaborating with international teams.

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Skills

Experience Level

Swift
Expert
Objective-C
Expert
Bash
Intermediate
GitHub CoPilot
Intermediate
Python
Intermediate
Ruby
Intermediate
Sourcery
Intermediate

Language

English
Fluent
German
Beginner
Russian
Fluent

Work Experience

Relocation & Professional Development at Munich, Germany (Sabbatical)
August 1, 2023 - Present
Relocated to Germany and managed cultural and legal integration processes. Upskilled in modern iOS technologies (SwiftUI and structured concurrency) through practical pet projects. Achieved German language proficiency A1; continuing education.
Lead iOS Developer at YouDo LLC
November 1, 2021 - July 1, 2023
Architected and rolled out a Server-Driven UI framework and a unified Design System. Reduced Time-to-Market for new features by enabling backend-driven layout changes without app updates. Streamlined release process with a fully automated pipeline using SPM, Fastlane, and Xcode Cloud. Introduced code generation tools (Sourcery) to automate boilerplate code. Improved app stability and code quality by mandating Unit/Snapshot testing and strict code reviews. Mentored a team of iOS engineers and facilitated onboarding for new hires.
Senior iOS Engineer at Sportmaster LLC
October 1, 2020 - November 1, 2021
Led the development of a new customer-facing application from scratch (Greenfield project) with a scalable modular architecture. Established CI/CD workflows and engineering standards. Implemented offline-first features using Realm and optimized networking. Integrated external peripherals (barcode scanners, thermal printers via Bluetooth/WiFi) to streamline in-store operations. Collaborated with UI/UX to create a library of reusable UI components.
iOS Engineer at Sberbank PJSC
March 1, 2018 - October 1, 2020
Contributed to the main banking app and ecosystem products within a large-scale Agile environment. Migrated legacy Objective-C modules to Swift, improving maintainability and crash-free rates. Implemented high-performance geospatial features (client-side map clustering, custom maps). Built complex custom UI components (interactive seating charts, maps). Participated in architectural reviews and contributed to a shared internal mobile framework.
Relocation & Professional Development at Self-Employed / Sabbatical
August 1, 2023 - Present
Relocated to Germany and pursued cultural and legal integration, upskilled in modern iOS technologies (SwiftUI, async/await) through practical pet projects, and achieved German language proficiency A1.
iOS Consultant & Independent Developer at Independent / Self-Employed
August 1, 2023 - Present
Provided expert consultancy for various iOS projects, focusing on product development, code maintenance, and architectural reviews. Managed relocation to Germany and cultural integration while maintaining professional engagements. Deepened expertise in modern iOS stack (SwiftUI and structured concurrency via async/await) through practical implementations in commercial and personal projects. Achieved German language proficiency level A1 and continued language learning.

Education

M.Sc., Computer Science & Engineering at National Research Nuclear University 'MEPhI'
January 1, 2016 - December 31, 2018
B.Sc., Information Systems & Technologies at National Research Nuclear University 'MEPhI'
January 1, 2012 - December 31, 2016
M.Sc., Computer Science & Engineering at National Research Nuclear University 'MEPhI'
January 1, 2016 - January 1, 2018
B.Sc., Information Systems & Technologies at National Research Nuclear University 'MEPhI'
January 1, 2012 - January 1, 2016
M.Sc., Computer Science & Engineering at National Research Nuclear University MEPhI
January 1, 2016 - December 31, 2018
B.Sc., Information Systems & Technologies at National Research Nuclear University MEPhI
January 1, 2012 - December 31, 2016

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Financial Services, Retail, Media & Entertainment, Professional Services

Skills

Experience Level

Swift
Expert
Objective-C
Expert
Bash
Intermediate
GitHub CoPilot
Intermediate
Python
Intermediate
Ruby
Intermediate
Sourcery
Intermediate

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