Senior Software Engineer (C++, Go, Java)

Senior Software Engineer (C++, Java or Go)

Overview

Ocho is delighted to be exclusively partnering with our client to recruit a Senior Software Engineer into one of the most successful and fastest-growing technology divisions within a global software organisation.

This is a rare opportunity to join a team building mission-critical software deployed directlynetworks across the globe. The systems you help develop support millions of end users every day, where performance, reliability and engineering excellence are non-negotiable.

The team is actively modernising its platform to support the next generation of 5G and 6G networks while expanding into exciting areas such as fraud detection, network intelligence and machine learning-powered services.

While historically this team focused heavily on C++, they are now actively seeking exceptional software engineers from C++, Java or Go backgrounds who can bring strong problem-solving skills and engineering fundamentals to complex technical challenges.

Key Responsibilities

• Design, develop and enhance highly scalable software operating within carrier-grade telecommunications environments
• Contribute to both product development and automated testing frameworks
• Build software that operates under high-throughput, low-latency and highly available conditions
• Work within modern microservices and containerised architectures
• Collaborate across engineering teams to improve automation, deployment and operational resilience
• Participate in architecture discussions and technical decision‑making
• Utilise AI‑assisted engineering tools to improve productivity, quality and delivery
• Support the continued evolution of platforms underpinning future 5G and 6G technologies

The Person We Are Looking For

• Strong commercial software engineering experience using C++, Java or Go
• Experience developing software within Linux environments
• Solid understanding of networking fundamentals including TCP/IP, UDP, HTTP, HTTPS and sockets
• Experience building distributed systems, backend services or performance-sensitive applications
• Comfortable working within CI/CD and modern software delivery environments
• Excellent analytical and problem-solving skills
• Ability to thrive when working through ambiguity and complex technical challenges
• Experience with containerisation and microservices architectures would be advantageous
• Exposure to telecommunications, networking, low-latency systems or high-performance computing would be beneficial

Salary & Benefits

£55,000 - £70,000

Exceptional candidates above this range will be considered

Flexible hybrid working with approximately 2 days per week in the Belfast office