Tangem

Swift blockchain developer

In short

Tangem, a blockchain hardware wallet company headquartered in Zug, Switzerland, is looking for a middle-level Swift developer to build its Blockchain SDK for interacting with different blockchain networks. The role requires solid Swift, async/await, OOP/SOLID knowledge, REST API understanding, and the ability to port code into Kotlin. Fully remote work aligned with GMT+3 timezone, with salary paid in EURO/USDT.

About the Company
Tangem is a high-tech company in the blockchain sector, founded in 2017, headquartered in Zug, Switzerland, with branches in North America, Eastern Europe, and APAC. Tangem started with the idea of bringing digital assets to the masses using a unique combination of a smartcard-based hardware wallet and mobile applications. The company owns and promotes the technology of hardware cold-wallet for digital assets with secure and simple UX in 220 countries today.
Responsibilities
•Development of Tangem's Blockchain SDK used in mobile application for interacting with different blockchain networks
•Active participation in technical discussions and development of new features
•Writing unit tests
Requirements
•Ability to ask questions and a desire to improve
•Decent knowledge of Swift
•Experience with async/await
•Knowledge of basic frameworks (Foundation)
•Object-oriented programming (OOP) skills, understanding of SOLID principles
•Familiarity with modern architectural patterns, principles of functional programming, protocol-oriented design
•Understanding of Rest API and HTTP principles
•Ability to understand code in different languages and replicate it in Kotlin
•Strong debugging skills
Nice to have
•Published projects on the App Store
•Experience with CryptoKit
•Experience designing application architecture and covering the application with tests
•Experience with blockchain technologies
•Experience in FinTech
Conditions
•Stability, development, participation in the future unicorn's growth
•We use the latest technologies, no legacy, leveraging SwiftUI and Combine
•Remote work from anywhere in the world, with a schedule aligned with GMT+3
•Competitive salary in EURO/USDT
•20 working days of paid vacation
•Birthday presents
•Compensation for the purchase of necessary technical devices for the work
•Paid sick leaves

Stop applying.
Get referred.

$10 in free credits

In just 60 seconds, fully on autopilot — Eraldt's AI agents read your CV, map the roles you fit, find live vacancies and the people who can refer you, write personal emails, and get you referred.

This isn't an application: your CV doesn't go to the company, and we don't promise a referral for this exact role.

Discover who else lands interviews on autopilot