Software Engineer – Edge Traffic & Security Platforms

CPL · Recruitment agency
Contract•Platform / Infrastructure•€77k/year (EUR)•Dublin, Ireland
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At a glance

Employment type
Contract
Workplace
On-site
Salary
€77k/year (EUR)

Technologies & skills

Primary technologies

RustGoC++

What you'll be doing

Senior Software Engineer (9-month contract, on-site Dublin) to design, deploy, and optimize edge traffic security platforms for a global tech platform. Focus on legacy migration, operational excellence, and supporting production systems. Work with a world-class team on high-impact infrastructure.

  • Design, deploy, and optimize edge traffic security platforms using Envoy, HAProxy, IPVS, eBPF, and WAF architectures
  • Safely migrate large-scale, critical legacy systems and codebases to modern infrastructure
  • Eliminate operational and incident-action-item backlogs by addressing root causes
  • Triage technical issues in team Slack channels
  • Refine production runbooks and engineering documentation

Key requirements

Must-have

  • BA/BS degree or higher in Computer Science or related technical discipline, or equivalent practical experience
  • 5+ years of software design and development experience with a focus on algorithm-related solutions
  • 5+ years programming in Go, Rust, C, or C++
  • Hands-on experience with large-scale distributed systems
  • Experience with core L4 to L7 networking protocols (TCP/IP, HTTP, DNS, eBPF)
  • Proven experience managing large-scale migrations of live-production legacy infrastructure
  • Experience with open-source traffic infrastructure software (Envoy, HAProxy, Apache Traffic Server)
  • Working knowledge of WAF implementations, DDoS mitigation engines, rate-limiting frameworks, and TLS/mTLS termination at scale

Experience: Senior (5+ years)

Role signals

Technical focus
platform engineering, distributed systems, networking, legacy migration, operational excellence
Architecture / system design
Indicated in the listing
Hands-on vs management
Hands-on

Full job description

🚀Software Engineer – Edge Traffic & Security Platforms🚀

📈💰 Salary: €77,000 per annum📍 Dublin ⏳ 9-Month Contract

Looking to work on high-impact infrastructure handling mission-critical traffic for hundreds of millions of global users securely?

🌐 A leading global technology platform based in Dublin is looking for a senior-level Software Engineer for an immediate 9-month contract.In this role, you aren’t just maintaining a system—you will actively optimize security platforms, burn down architectural debt, and migrate critical legacy infrastructure alongside a world-class team.

🛠️ Tech Stack: Envoy, eBPF, HAProxy, Rust, Go, C++

💻 Key Responsibilities:

🛠️ Platform Engineering: Design, deploy, and optimize edge traffic security platforms built over Envoy, HAProxy, IPVS, eBPF, and WAF architectures to maximize global traffic flow.

🔄 Legacy Migration: Safely migrate large-scale, critical legacy systems and codebases to modern infrastructure without impacting live production traffic.

📉 Operational Excellence: Eliminate operational and incident-action-item (Incident-AI) backlogs by addressing root causes rather than applying quick patches.

📚 Support & Hygiene: Triage technical issues in the teams Slack channels while continuously refining production runbooks and engineering documentation.

🎯 Required Skills & Qualifications

🎓 Education: BA/BS degree or higher in Computer Science, a related technical discipline, or equivalent practical experience.

⚙️ Core Experience:

5+ years of software design and development experience, with a strong focus on algorithm-related solutions.

⌨️ Programming Languages: 5+ years of experience programming in Go, Rust, C, or C++.

🌐 Distributed Systems & Networking: Hands-on experience with large-scale distributed systems and core L4 to L7 networking protocols (TCP/IP, HTTP, DNS, eBPF).

🔀 Migration Strategy: Proven experience managing large-scale migrations of live-production legacy infrastructure.

🔄 Experience with open-source traffic infrastructure software (Envoy, HAProxy, Apache Traffic Server).

🛡️ Working knowledge of WAF implementations (e.g., Coraza, ModSecurity), DDoS mitigation engines, rate-limiting frameworks, and TLS/mTLS termination at scale.

📡 Exposure to traffic delivery systems across CDNs, load balancers, and routing matrices.

📩 How to Apply

Please email your CV & Cover Letter directly to arlene.french@cpl.ie with the subject line

🚀Software Engineer – Edge Traffic & Security Platforms — Dublin 🚀

#AF-LI1

#JobFairy #SoftwareEngineering #SystemsEngineer #BackendDeveloper #GoLang #RustLang #CppJobs #TechnicalSEO #InfrastructureJobs #DublinTechJobs #ContractingIreland #HiringNow

Interview prep pack

Grounded in this listing. Use it to prepare examples before you apply.

Your interview focus

Based on this listing, the role centers on designing, optimizing, and migrating edge traffic security platforms for a global technology company, with a strong emphasis on distributed systems, networking, and operational excellence.

  • Platform engineering with distributed systems and networking·High
  • Legacy migration and operational excellence·High
  • Hands-on experience with Go, Rust, C, or C++·High

Only have 30 minutes?

Follow a focused preparation plan based on this job.

Start 30-minute prep

Your 30-minute plan

  1. Review Edge Platform Technologies

    0–8 min

    Refresh your knowledge and prepare examples involving Envoy, HAProxy, eBPF, and WAF architectures.

  2. Prepare Migration Case Studies

    8–15 min

    Select and outline 1-2 detailed stories of legacy infrastructure migrations you have led or contributed to.

  3. Brush Up on Distributed Systems and Networking

    15–21 min

    Review key concepts and protocols (TCP/IP, HTTP, DNS, eBPF) relevant to large-scale distributed systems.

  4. Summarize Operational Excellence Contributions

    21–26 min

    List specific actions you have taken to address root causes, improve runbooks, or reduce incident backlogs.

  5. Draft Role-Specific Questions

    26–30 min

    Prepare thoughtful questions about the team's challenges, processes, and culture to ask during the interview.

Likely questions

, 7 items

Priority reflects how strongly this topic is emphasised in the job listing, not whether it will be asked.

Talking points

, 5 items

  • Design and Optimization of Edge Traffic Security Platforms

    You should be ready to discuss your experience building and optimizing platforms using technologies like Envoy, HAProxy, eBPF, and WAF architectures, as this is a core responsibility.

  • Large-Scale Legacy Migration

    Prepare examples of safely migrating critical legacy systems to modern infrastructure, highlighting strategies to avoid production impact.

  • Distributed Systems and Networking Protocols

    Demonstrate your hands-on experience with distributed systems and deep understanding of L4-L7 protocols (TCP/IP, HTTP, DNS, eBPF), as these are essential for the role.

  • Incident Management and Operational Hygiene

    Showcase how you have addressed root causes of operational issues, eliminated backlogs, and improved documentation or runbooks in previous roles.

  • Programming in Go, Rust, C, or C++

    Be prepared to discuss your software design and development experience, especially algorithmic problem-solving in these languages.

What to research

, 4 items

  • Edge Traffic Security Technologies

    Review your experience with Envoy, HAProxy, IPVS, eBPF, and WAF architectures, focusing on design and optimization.

  • Legacy Infrastructure Migration

    Prepare detailed examples of large-scale migration projects, including strategies for minimizing production impact.

  • Distributed Systems and Networking Protocols

    Refresh your knowledge of L4-L7 protocols (TCP/IP, HTTP, DNS, eBPF) and their application in distributed systems.

  • Operational Excellence Practices

    Gather examples of how you have addressed root causes of incidents, improved runbooks, and contributed to operational hygiene.

Questions to ask

, 6 items
  1. What are the biggest technical challenges currently facing the edge traffic and security platforms team?

    Why ask this? To understand the team's priorities and where your skills can have the most impact.

  2. How does the team approach large-scale legacy migrations to minimize risk and downtime?

    Why ask this? To learn about established migration strategies and your potential role in them.

  3. What is the typical incident response workflow, and how are root causes tracked and addressed?

    Why ask this? To assess the team's commitment to operational excellence and continuous improvement.

  4. How is knowledge shared within the team, especially regarding runbooks and engineering documentation?

    Why ask this? To gauge the team's culture around documentation and support.

  5. What opportunities exist to influence architectural decisions or introduce new technologies?

    Why ask this? To clarify your potential for technical leadership and innovation.

  6. How does the team stay current with evolving security threats and best practices for edge platforms?

    Why ask this? To understand the team's approach to ongoing learning and security posture.

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Apply NowApply before: 26 Nov 2026