Senior Fullstack Engineer (IOS/Backend)

Senior Fullstack iOS/Backend Engineer Remote - Full-time B2B Contract Tabby creates financial freedom in the way people shop, earn and save by reshaping their relationship with money. Over 15 million users choose Tabby to stay in control of their spending and make the most out of their money. The company’s flagship offering allows shoppers to split their payments online and in-store with no interest or fees. Over 40,000 global brands and small businesses, including Amazon, Noon, IKEA, and SHEIN use Tabby to accelerate growth and gain loyal customers by offering easy and flexible payments online and in stores. Tabby generates over $10 billion in annual transaction volume for its partner brands and is the highest-rated, most-reviewed, largest, and fastest-growing FinTech in the GCC region. Tabby launched in 2019 and has since raised +$1 billion in equity and debt funding from global and regional investors, and is now valued at $4.3 billion. Key Responsibilities What you'll do… We are looking for a Senior Fullstack Engineer (IOS/backend) You'll work in a squad with PM, 2 backend engineers, 2 iOS engineers, 1 Android engineer, and 2 QA engineers – helping product teams ship faster with better stability and developer experience. Develop clean, scalable iOS code using Swift with SwiftUI/UIKit hybrid UI, following best practices and strict quality standards. Lead architecture and design decisions using Tuist for modular setup, custom MVI with Combine/CombineFeedback, and backend-driven UI components. Actively participate in code reviews; write and maintain comprehensive XCTest unit/integration tests. Implement Fastlane CI/CD pipelines, SwiftLint enforcement, and contribute to 40+ modules across Foundation, Platform, and Domain layers. Collaborate with backend (Go exposure), QA, and Android teams to deliver reliable features and resolve production issues. Improve developer experience through reusable components, automation, monitoring, and fintech engineering culture. Skills, Knowledge & Expertise Our stack... Swift, with SwiftUI/UIKit hybrid UI Tuist for modular project setup, Fastlane for CI/CD Custom MVI architecture with Combine and CombineFeedback XCTest, SwiftLint, strict code quality standards Backend-driven UI systems across 40 modules (Foundation, Platform, Domain) Go backend technology (or willingness to collaborate/learn) Nice to have... Experience with GitLab API and writing/maintaining GitLab pipelines Ability to write Python scripts for automation BDUI systems maintenance or fintech/payments products Proactive ownership mindset in fast-paced, remote teams Job Benefits What we offer Full-time B2B contract Fully remote setup, work from anywhere in Europe Up to 20% tax allowance 22 paid leave days annually Stock options (ESOP) in a fast-scaling, pre-IPO company Flexi benefits you can use for wellness, travel, or learning Work alongside a high-performing, international engineering team in a global fintech unicorn Relocation support is available to our hubs in Armenia, Georgia, Serbia, Portugal, and Spain, including flights, temporary accommodation and legal setup.