Senior Software Engineer (Distributed System - C++)

GCS Recruitment; Ireland; On-site; EUR 80,000 - 110,000; Full time

Job summary

GCS Recruitment is seeking a Senior C++ Software Engineer to join our client’s distributed systems team in Munster. You will help build new large-scale, high-performance systems in Linux, with a focus on greenfield development and integration with existing platforms.

Candidates should have deep C++ expertise, experience with distributed architectures, and comfort working across time zones. The role offers hybrid work and a competitive salary with bonus/benefits.

Qualifications

• Experience building distributed applications in Linux.
• Strong C++ with modern standards and patterns.
• Familiarity with TCP/IP networking and sockets.
• Ability to design features from scratch for greenfield and legacy systems.
• Long-term engineering mindset and cross-time-zone collaboration.

Responsibilities

• Designing and developing new distributed system components.
• Building high-performance backend services in C++.
• Architecting features for multi-node distributed environments.
• Integrating new systems with legacy platforms.
• Collaborating with senior engineers across time zones.
• Contributing to large codebases.

Skills

C++ (latest version)

Distributed systems

Linux development

Networking (TCP/IP)

Concurrency & fault tolerance

C (legacy)

Go background

Rust background

Job description

SENIOR C++ SOFTWARE ENGINEER (DISTRIBUTED SYSTEMS - NEW DEVELOPMENT)

Location: Munster (2 days a week Hybrid)

Salary: €80,000 to €110,000(depends on experience) + Bonus/Benefits

Overview

We are hiring multiple C++ engineers to build new large-scale distributed software systems. This is a rare greenfield opportunity within a global engineering organisation, working on complex, high-performance systems in Linux with a mix of new development and integration with long-standing platforms.

What You'll Work On

• Designing and developing new distributed system components
• Building high-performance, scalable backend services in C++ (or C / Go / Rust backgrounds considered)
• Architecting and implementing new features within multi-node distributed environments
• Integrating new systems with legacy platforms and infrastructure
• Contributing to large, multi-million-line codebases running globally
• Working with senior engineers across multiple time zones on next-generation system architecture

Tech Stack & Skills

Must Have

• Strong experience with C++ (latest version)
• Prefer strong C as well with real distributed systems experience
• Deep understanding of:
  • Distributed systems principles
  • TCP/IP, networking, sockets
  • Concurrency, state management, fault tolerance
• Linux development experience
• Experience building large-scale, long-lived software systems

What Matters Most (over language purity)

• Real-world experience building distributed applications
• Ability to design new features from scratch
• Comfort working with both greenfield and legacy systems
• Long-term engineering mindset