Principal Software Engineer

Principal Software Engineer - Crypto Trading | Remote (Northern Ireland)

Up to £110k base + bonus | AWS | Greenfield Engineering | Optional Belfast Office

We're hiring a Principal Software Engineer to join a small, elite team building out core infrastructure for a next-gen crypto and digital asset platform. This is a hands-on leadership role focused on scalable backend systems, low-latency data flows, and secure, cloud-native architecture.

You'll work remotely from anywhere in Northern Ireland, with the option to collaborate in a modern Grade A city centre office. The engineering culture is clean, pragmatic and delivery-focused - ideal for someone who enjoys solving complex problems with smart, reliable code and has a passion for shaping high-performance platforms.

What you'll be working on :

Core backend services for trade execution, account management, market data, and transaction flows

Designing and building microservices and event-driven pipelines with strong SLAs

Helping scale infrastructure across cloud-native environments using Kubernetes and AWS

Playing a key role in architecture, mentoring, and platform evolution

Collaborating closely with engineering, infosec and DevOps to ensure robust, secure, scalable systems

Contributing to the selection of tools, patterns, and design standards across the backend estate

Tech stack includes :

Go, Java, Python

Kafka, PostgreSQL, Redis

Kubernetes (EKS), Docker, AWS Cloud

CI / CD (GitLab, ArgoCD), Prometheus, Datadog

Protobuf, REST, mutual TLS

What we're looking for :

Deep hands-on backend experience in modern languages (Go, Java, Python etc.)

Strong understanding of trading systems, crypto, low-latency messaging or financial platforms

Solid architectural grounding in distributed systems, APIs, and service mesh concepts

Comfortable designing and deploying systems on cloud platforms (preferably AWS)

Experience mentoring other engineers and guiding team-level technical decisions

Familiar with secure, reliable communication and monitoring across production environments

Location : Remote (Northern Ireland) with optional Belfast office

Salary : Up to £110k base + bonus + benefits

Apply here or reach out to Aaron Somers at Ocho for more information via LinkedIn.