Senior Backend Engineer (Fintech / HFT)

BlockDelta; Dubai; On-site; AED 120,000 - 200,000; Full time

Job summary

A leading digital finance firm in the UAE seeks an experienced Senior Backend Engineer to develop high-performance trading infrastructure. This role involves building scalable backend systems using Node.js, optimizing performance, and ensuring robust communication features. Ideal candidates will have extensive experience in Node.js, asynchronous workflows, and performance testing tools. Competitive salary based on experience is offered.

Qualifications

• 6+ years of backend engineering experience with extensive Node.js.
• Solid understanding of asynchronous workflows.
• Experience in performance testing and memory optimization.

Responsibilities

• Develop scalable backend systems using Node.js.
• Engine low-latency communication features with WebSockets.
• Lead performance analysis and stress testing of backend services.

Skills

Node.js

Asynchronous workflows

WebSockets

Memory analysis

Redis

PostgreSQL

CI/CD workflows

Microservices design

Kubernetes

Tools

Artillery

k6

JMeter

Job description

Overview

Our client is a pioneer in digital finance, delivering next-generation crypto and FX platforms. With a strong foundation in regulated financial markets, theyve earned a reputation for excellence across global trading infrastructure. As part of their strategic growth, they are now seeking a Senior Backend Engineer to join their world-class engineering team in the UAE.

Role Requirement

We are looking for a sharp and dependable Senior Backend Engineer to help our client build the next generation of high-performance trading infrastructure. This role is perfect for someone who thrives in fast-paced environments and enjoys solving complex engineering challenges from optimizing memory usage and managing real-time socket connections to load testing mission-critical systems under pressure.

Key Responsibilities

• Develop robust and scalable backend systems using Node.js to support mission-critical applications
• Engineer low-latency, real-time communication features leveraging WebSockets or equivalent protocols
• Optimize memory usage and enhance system efficiency under demanding workloads
• Lead efforts in stress testing, performance analysis, and tuning of backend services
• Work closely with frontend engineers and DevOps to ensure secure, reliable, and well-integrated deployments
• Produce high-quality, maintainable, and well-tested code following best practices
• Enhance data flow and maximize performance in high-concurrency, low-latency systems
• Design and deploy resilient infrastructure with robust monitoring and alerting mechanisms

Qualifications

• Minimum 6 years of backend engineering experience, including 5+ years working extensively with Node.js
• Solid grasp of asynchronous workflows and event-driven system design
• Proven experience building real-time applications using WebSockets, data streaming, and push technologies
• Demonstrated expertise in memory analysis, garbage collection optimization, and identifying memory leaks
• Familiarity with performance testing tools such as Artillery, k6, or JMeter
• Practical experience working with Redis, PostgreSQL, and optionally MongoDB
• Skilled in diagnosing performance bottlenecks and conducting in-depth debugging across complex systems
• Strong knowledge of containerization, CI / CD workflows, and designing microservices-based systems
• Familiarity with message brokers such as Kafka or RabbitMQ is an advantage
• Background in building and maintaining distributed, high-availability infrastructure

Favoured

• Industry experience in fintech, gaming, or high-speed trading environments
• Hands-on background with binary protocols, custom-built socket servers, or low-level networking
• Proficient in designing scalable infrastructure using Kubernetes
• Comfortable working with real-time observability tools such as Prometheus and Grafana

This is an exceptional opportunity to work with a world-class team.

Salary: Highly competitive, in line with experience and market standards.

To apply, please submit your CV via the link.

For additional information about open vacancies and events we are attending, please feel free to follow our LinkedIn Page. We are presently working on numerous client roles at BlockDelta.