Lead Platform Engineer – Real-Time Trading & Architecture

Dex; Greater London; On-site; GBP 150,000 - 190,000; Full time

Job summary

Dex is a world-class market maker in digital assets, seeking a technical authority to own architecture across client portals, live trading products, and internal tooling. You will guide technical roadmap decisions, mentor engineers, and design resilient streaming systems where performance impacts execution.

The role requires leading real-time systems design with a focus on low latency, scalability, and security in a fast-growth fintech environment.

Qualifications

• 8+ years in software engineering with 3+ years in a technical leadership seat.
• Experience designing data-intensive, real-time systems.
• Fluency in TypeScript, React, Node.js; backend in Go or Python.
• Strong production infra, CI/CD, observability, and security (OWASP).

Responsibilities

• Act as the ultimate technical authority for client and internal trading platforms, owning architectural direction from system design to production deployment.
• Design and scale real-time, low-latency streaming architectures handling massive data volumes, live pricing feeds, and order execution interfaces.
• Co-own the technical roadmap alongside product and trading leadership, balancing rapid feature iteration with institutional-grade reliability.
• Establish engineering standards across code review, CI/CD, incident response, CDN distribution, and authn/authz security protocols.
• Mentor, hire, and set the performance bar for a team of full-stack, frontend, and backend engineers.

Skills

Technical leadership

System architecture

Real-time systems

TypeScript

React

Node.js

Go

Python

WebSockets

Message queues

CI/CD

Observability

Security

Job description

Dex is a world-class market maker in digital assets, seeking a technical authority to own architecture across client portals, live trading products, and internal tooling. You will guide technical roadmap decisions, mentor engineers, and design resilient streaming systems where performance impacts execution.

The role requires leading real-time systems design with a focus on low latency, scalability, and security in a fast-growth fintech environment.