Job Summary: Design, develop, and maintain scalable and secure backend solutions for electronic payment platforms, ensuring the integrity, confidentiality, and availability of financial systems. Key Highlights: 1. Design and implement REST APIs 2. Ensure security in financial applications 3. +7 years of backend development experience Design, develop, and maintain **scalable and secure backend solutions for electronic payment platforms**, ensuring the **integrity, confidentiality, and availability of the client's financial systems**. Responsibilities: * **Design and implement REST APIs** * Design scalable microservices * **Integrate external payment systems** * Maintain and optimize databases * **Ensure security in financial applications** Requirements: * **+7 years of backend development experience** * Direct experience in financial sector, fintech, or electronic payment system projects. * Proficiency in **RESTful APIs** and **microservices**. * Solid knowledge of **databases** (relational and NoSQL). * Intermediate technical English (reading documentation and technical collaboration). Primary Tech Stack: * **Node.js: Express, Mongoose, Jest, Axios, JWT, RESTful APIs** * Database: MongoDB (aggregations, indexes, query optimization) Complementary Technologies: * Kafka: node\-rdkafka, event\-driven architecture, message streaming * Golang: Gin, GORM, kafka\-go, gRPC, microservices * AWS: Lambda, S3, DynamoDB, API Gateway, SQS/SNS, CloudWatch * Python: FastAPI, Motor, pytest, aiokafka, scripting * DevOps: Docker, Terraform, CI/CD (GitHub Actions), Prometheus, Grafana **90% remote work** **Send CV to: yunuen@didactrend.com** Employment Type: Full-time Salary: $40,000\.00 \- $45,000\.00 per month Work Location: Remote