Senior Kotlin​/Java Developer

Tangem is a high-tech company in the blockchain sector was 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. Company owns and promotes the technology of hardware cold-wallet for digital assets with secure and simple UX in 220 countries today. Our customers enjoy setup time within 1 minute with the ultimate security level for digital assets on their wallet.

Tangem solutions offer multi-support of a growing number of thousands of tokens by a single wallet. SBI Crypto Investment Ltd., the digital asset venture investment company wholly owned by SBI Holdings Inc., has invested $15 million into Tangem in 2019 for mass adoption of blockchain technology.

We are looking for a Senior Kotlin/Java Backend Engineer who will play a key role in designing system architecture, building APIs, and delivering impactful product features. You will work closely with experienced engineers to shape the technical direction of our platform and ensure we maintain high standards of quality, reliability, and performance.

that enables users to spend cryptocurrency directly via a virtual Visa card anywhere cards are accepted. The product is already live in production, designed to scale across regions, currencies, and regulatory environments, and serves as a bridge between self-custodial crypto assets and real-world financial payments.

• Design and implement resilient, scalable, and high-performance backend services;
• Develop clean, maintainable, and extensible Kotlin/Java code;
• Build and maintain financial and payment-related services;
• Collaborate with product, Dev Ops, and engineering teams to deliver end-to-end solutions;
• Participate in code reviews, architecture discussions, and technical decision-making;
• Continuously improve system reliability, observability, and performance.

• Excellent knowledge of Kotlin/Java;
• Strong experience working as a Backend Engineer in production environments;
• Solid understanding of software architecture
  , design principles, and common patterns;
• Hands-on experience with CI/CD pipelines and modern development workflows;
• Familiarity with cloud-native application development;
• Strong communication and collaboration skills;
• Experience in fintech or payment systems is a strong plus.
• Languages: Kotlin, Java;
• Frameworks: Spring Boot;
• Monitoring & Observability: Grafana, Prometheus, Jaeger;
• Messaging: Kafka;
• Build Systems: Gradle, Maven.

• Work alongside a team of highly skilled professionals;
• Build products using a modern, thoughtfully selected tech stack;
• Minimal bureaucracy and fast decision-making;
• Real ownership: directly influence the product, architecture, and business outcomes;
• Opportunity to grow technically and shape the future of our platform.

• Stability, development, participation in the future unicorn's growth;
• Remote work from anywhere in the world;
• Competitive salary in EURO/USDT
  ;
• Vacation 20 working days per year;
• Birthday presents;
• Compensation for the purchase of necessary technical devices for the work;