Delta6Labs - Senior Backend Engineer - Node.js

About Delta6labs :

Delta6labs is a high-growth fintech innovator, building scalable, cutting-edge solutions in crypto, trading, and blockchain. Our products white-label crypto exchanges, NFT marketplaces, crypto wallets, and MT5/MT4 integrations empower financial institutions, brokers, and enterprises to expand their digital offerings rapidly.

Role Overview :

We are looking for an experienced Senior Backend Engineer (Node.js) to join our dynamic team. You will be responsible for designing, building, and maintaining scalable, secure, and high-performance backend systems. The role involves working closely with product and front-end teams to deliver reliable APIs and services, with exposure to cloud infrastructure, distributed systems, and modern development practices.

Key Responsibilities :

- Design, develop, and maintain robust server-side applications using Node.js.

- Build and maintain scalable, low-latency RESTful APIs.

- Design systems for high availability, performance, and reliability.

- Work with databases such as PostgreSQL, MongoDB, and Redis.

- Implement authentication, authorization, and data security best practices.

- Optimize backend services for performance, scalability, and cost efficiency.

- Integrate with third-party services and APIs (e.g., messaging, email, payments).

- Collaborate with product, front-end, and QA teams to understand and deliver requirements.

- Participate in code reviews, technical discussions, and documentation.

- Write and maintain unit, integration, and end-to-end tests.

- Work with CI/CD pipelines and containerized environments using Docker.

- Collaborate with platform/DevOps teams on cloud deployments and Kubernetes-based systems.

- Implement and work with message queues and streaming systems such as RabbitMQ, Kafka, AWS SQS/SNS, or Azure Service Bus.

- Support real-time features using Web-Sockets or event-driven architectures.

(ref:hirist.tech)