Open to opportunities

Alexander Semeniuk

@alexandersemeniuk

Message

I build high-performance iOS banking, fintech, retail, and delivery apps from architecture through App Store release.

Ukraine

Message

At Raiffeisen Bank, I build and scale core banking features for the MyRaif application, using SwiftUI and Combine within a 15-engineer product team serving hundreds of thousands of users.

Previously at Temabit, I architected and launched a grocery delivery app from scratch as the sole iOS developer, owning architecture, implementation, testing, and its App Store release. At Grid Dynamics, I developed features for Macy’s high-traffic retail app alongside a distributed team of 50+ developers.

I also built and maintained secure payment-focused fintech applications at LuxonPay, with attention to financial data integrity, legacy-code refactoring, and maintainability. I’m comfortable taking an iOS product from MVP to production or collaborating across large cross-functional teams.

Experience

Work history, roles, and key accomplishments

Current

iOS Engineer

Current

Raiffeisen Bank

Oct 2022 - Present (3 years 11 months)

Engineered and scaled core banking features using SwiftUI and Combine within a 15-engineer product team. Optimized application stability and performance for a high-load production app.

SwiftUI Combine Swift UIKit Core Data REST WebSockets Firebase Push Notifications In App Purchases XCTest Fastlane GitHub Actions Jenkins SPM Cocoapods

iOS Engineer

Temabit

Jun 2021 - Oct 2022 (1 year 4 months)

Architected and launched a grocery delivery application from scratch as the sole iOS developer. Managed the entire development cycle including architecture, implementation, testing, and successful App Store release.

iOS Engineer

Grid Dynamics

Mar 2020 - Jun 2021 (1 year 3 months)

Developed features for a high-traffic retail application (Macy's) as part of a distributed team of 50+ developers. Streamlined development through efficient task estimation, planning, and close collaboration with QA and backend engineers.

iOS Engineer

LuxonPay

Feb 2019 - Mar 2020 (1 year 1 month)

Built and maintained a secure fintech application, focusing on payment processing and financial data integrity. Contributed to technical planning and refactoring of legacy code to improve maintainability.