Software Engineer

RECRUITERS; Ireland; Remote; EUR 69,000 - 85,000; Part time

Job summary

RECRUITERS is seeking a Software Engineer for Distributed Systems & Network Infrastructure (C++ | Go | Rust). This is a 9-month contract for Ireland-based remote candidates, with a pro rata annual salary of €77,000 or a daily rate of €390.

You will contribute to mission-critical infrastructure used by hundreds of millions of users and work with Envoy, HAProxy, eBPF and related tech. You will design and build large-scale distributed systems, optimise traffic flows, migrate legacy components, and

Qualifications

• Bachelor's degree in Computer Science or related technical field.

Responsibilities

• Design, develop and optimise large-scale distributed systems and traffic security platforms.
• Work with networking technologies including Envoy, HAProxy, IPVS, eBPF and WAF.
• Develop high-performance software using C++, Go, Rust or similar languages.
• Investigate and resolve complex networking, traffic and production incidents.
• Modernise legacy systems while maintaining reliability.
• Improve system performance, scalability, security and operational efficiency.
• Contribute to engineering best practices, code quality, automated testing and documentation.
• Maintain and improve runbooks and collaborate with infra engineering teams.

Job description

Software Engineer – Distributed Systems & Network Infrastructure (C++ | Go | Rust | Distributed Systems | TCP/IP | HTTP | DNS | eBPF)

€77,000 per annum pro rata or €390 per day (if you prefer a daily rate) | Remote Ireland-based candidates only | 9-Month Contract

This is an exciting opportunity to work on mission-critical infrastructure supporting hundreds of millions of users worldwide, using technologies such as Envoy, HAProxy, eBPF, C++, Go and Rust.

You’ll play a key role in improving platform reliability, optimising global traffic flows and modernising critical legacy systems.

What You’ll Be Doing

• Design, develop and optimise large-scale distributed systems and traffic security platforms.
• Work with networking technologies including Envoy, HAProxy, IPVS, eBPF and WAF.
• Develop high-performance software using C++, Go, Rust or similar languages.
• Investigate and resolve complex networking, traffic and production incidents.
• Modernise and migrate business-critical legacy systems while maintaining reliability.
• Improve system performance, scalability, security and operational efficiency.
• Contribute to engineering best practices, code quality, automated testing and technical documentation.
• Maintain and improve operational runbooks while collaborating with infrastructure engineering teams.

Must-Haves

• 5+ years of professional experience in software design, development and algorithm-related solutions.
• 5+ years of programming experience using C/C++, Go, Rust or similar systems programming languages.
• Strong hands‑on experience designing and developing large‑scale distributed systems and databases.
• Solid understanding of networking protocols and systems, including TCP/IP, HTTP, DNS and eBPF.
• Proven experience migrating large‑scale, business‑critical legacy systems, working with existing codebases while maintaining production stability.
• Strong troubleshooting and root cause analysis skills, particularly across complex networking and production environments.
• Ability to work independently, manage technical priorities and communicate effectively with distributed teams.
• Strong commitment to code quality, edge‑case testing, documentation and operational best practices.
• Bachelor's degree in Computer Science or a related technical discipline, or equivalent practical experience.

Nice to Have

• Experience with Envoy, HAProxy or Apache Traffic Server (ATS).
• Knowledge of L4–L7 networking, CDNs, load balancers, routing and proxy infrastructure.
• Experience with Web Application Firewalls (WAF), including ModSecurity or Coraza.
• Knowledge of DDoS mitigation, rate limiting and TLS/mTLS termination.
• Experience optimising high‑volume production traffic infrastructure.