Senior Fullstack Engineer

Job overview and responsibility- Design, develop, and maintain a real-time chat platform integrated into our fintech ecosystem.- Experienced in building backend services that can scaled using Node.js (WebSockets, REST APIs, GraphQL).- Develop modern, responsive frontend interfaces with React.js.- Ensure security, compliance, and data protection standards are met (especially for financial data).- Experience chat/messaging system is a plus (Group chats, message history, file sharing, push notifications, and user presence.- Develop with DevOps Culture in mind, understanding and maintaining solutions on AWS (Lambda, ECS, S3, DynamoDB/RDS, API Gateway, CloudFront, etc.).- Optimize for high availability, low latency, and scalability to support thousands of concurrent users.- Collaborate with product managers, designers, and other engineers to deliver a seamless experience.Required skills and experiences- 5+ years of experience in full-stack development (Node.js + React.js).- Strong experience with real-time communication (WebSockets, Socket.io, WebRTC, or similar).- Use message queues (Kafka, RabbitMQ, AWS SQS/SNS, or similar) to handle real-time messaging, scaling, and event-driven architecture.- Solid knowledge of AWS cloud architecture (serverless, microservices, CI/CD pipelines).- Have experience with in-app notification system (firebase, aws pinpoint, custom, ...)- Familiarity with databases both SQL and NoSQL.- Strong understanding of authentication, authorization, and encryption in realtime apps.- Experience in building secure, high-performance systems for fintech, banking, or similar regulated environments is a plus.- Good understanding of Agile development, Git workflows, and DevOps practices.Why Candidate should apply this position- 13th month salary- 14 Days Paid Annual Leave- Competitive salary and performance-based bonuses.- Performance review: twice a year- 100% monthly basic salary and mandatory social insurances after 2-month probation- Premium Health Insurance (after probation period) & annual health check-up- Allowances such as: Premium AI tool, Coffee, Snacks, Motorbike parking.- Happy hour, Team bonding, Company trip- Gifts on holidays, parking, wedding & newborn baby allowance- Collaborative and innovative culture.- Hybrid working environmentInterview process1. Technical & Personality Test, 2. Interview with Head of Engineering & Principal SE, 3. Interview with C-levels (in English)