Senior Back End Developer (Anti-Fraud) (вакансія неактивна)

🦈 SharksCode is a Ukrainian IT company specializing in the development of high-tech software solutions and platforms in B2B, particularly in the field of iGaming.

As a Senior Back End Developer, you will design and implement anti-fraud features, build integrations with third-party financial services, and develop high-performance APIs and microservices. You will also contribute to platform-level technical decisions and help strengthen engineering culture within the team.

🔧 Key Responsibilities

• Design and develop product features for anti-fraud systems.
• Build integrations with third-party financial and technical providers.
• Develop public-facing payment services and internal microservices.
• Participate in platform-level decision-making on technologies and practices.
• Promote and follow best engineering culture and share knowledge with the team.

📌 Requirements

• 5+ years of commercial development experience with Node.js and Express.js.
• Strong expertise in MongoDB and MySQL (PostgreSQL optional).
• Experience with Redis (optional).
• Experience with message queues (RabbitMQ).
• Hands-on experience integrating third-party services and building APIs.
• Understanding of distributed systems architecture.

💡 Nice-to-Have

• Experience with TypeScript and NestJS.
• Background in writing automated tests (Unit, Integration, E2E).
• Experience with high-load systems.
• Strong understanding and application of OOP, SOLID, DRY, KISS principles.

🎁What we offer

✨ Opportunity to make an impact and see your influence within the company
💰 Compensation that grows with your achievements
🏖️ Paid vacation & 🤒 sick leave
🩺 Health insurance
📚 Budget for conferences, seminars, and trainings to support your professional growth
🇬🇧 Free English courses
🕐 Flexible working hours
🏢 Cozy, modern office with all necessary amenities in the historic center of Kyiv