Senior Backend Developer (NestJS) - Crypto/Fintech Offline

Job Overview: 

We are looking for an experienced Senior Backend Developer with a minimum of 6 years of experience and a deep understanding of building high-load systems and payment solutions.

Key Responsibilities:

• Design and develop the architecture for a high-load payment aggregator
• Implement and optimize large-scale PostgreSQL databases for efficient data processing
• Develop and scale microservice architecture to handle significant volumes of payment transactions
• Integrate with various payment systems and APIs
• Configure and optimize AWS infrastructure to ensure reliability and performance
• Implement and maintain automated CI/CD processes
• Ensure the security of payment operations and user data

Required Skills:

• Minimum 6 years of experience in server solution development using Node.js and NestJS
• Proven experience in developing and optimizing high-load systems
• Experience in financial or payment processing projects
• Deep knowledge of designing and optimizing PostgreSQL databases for large data volumes
• Expert-level experience with AWS (S3, Lambda, RDS, EC2, CloudFormation, CloudWatch)
• Experience with microservice architecture and asynchronous processing (gRPC, Kafka)
• Deep understanding of TypeScript and development best practices
• Experience with monitoring tools and load-balancing solutions

Preferred Skills:

• Team lead experience (will be a plus)
• Experience with payment systems or financial solutions
• Knowledge of security principles and cryptography for payment data protection
• Experience with horizontal scaling of systems to handle peak loads
• Understanding of database sharding and replication principles

Hiring Process:
We conduct one general interview to discuss your experience, the project, and technical topics, focusing on your experience in building high-load systems.

Additional Information:
This position includes a probationary period equal to 3 months. With successful performance, there will be full-time employment in the future.