{"id":3437144,"url":"https://alion.io/job/cpl-software-engineer-edge-traffic-security-platforms","title":"Software Engineer – Edge Traffic & Security Platforms","company":{"id":2268173,"name":"Cpl","domain":"cpl.com","url":"https://alion.io/company/cpl-com","size_band":null,"is_staffing_agency":true,"employer_type":"agency","is_intermediary":false,"listed_via":null,"ats_vendor":"Schema","truth_index":{"grade":"B","score":77,"open_postings":49,"ghost_share":0,"stale_share":0.918,"repost_share":0.02,"time_to_fill_p50_days":28,"computed_at":"2026-10-31T05:58:55Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"contractor","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Dublin, Ireland"],"countries":["IE"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":77000,"max":null,"currency":"EUR","period":"year","gross":null,"usd_annual":85831},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Apache HTTP Server","optional":false},{"name":"C++","optional":false},{"name":"DNS","optional":false},{"name":"eBPF","optional":false},{"name":"Go","optional":false},{"name":"HAProxy","optional":false},{"name":"ModSecurity","optional":false},{"name":"Platform Engineering","optional":false},{"name":"Rust","optional":false},{"name":"Slack","optional":false},{"name":"TCP/IP","optional":false}],"status":"live","first_seen_at":"2026-10-27T12:57:38Z","employer_posted_date":"2026-10-27","last_verified_at":"2026-10-29T08:36:12Z","board_verified":false,"closed_at":null,"days_open":4,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":4},"description":"Software Engineer - Edge Traffic & Security Platforms\nSalary: €77,000 per annum Dublin 9-Month Contract\nLooking to work on high-impact infrastructure handling mission-critical traffic for hundreds of millions of global users securely?\nA 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.\nTech Stack: Envoy, eBPF, HAProxy, Rust, Go, C++\nKey Responsibilities:\nPlatform Engineering: Design, deploy, and optimize edge traffic security platforms built over Envoy, HAProxy, IPVS, eBPF, and WAF architectures to maximize global traffic flow.\nLegacy Migration: Safely migrate large-scale, critical legacy systems and codebases to modern infrastructure without impacting live production traffic.\nOperational Excellence: Eliminate operational and incident-action-item (Incident-AI) backlogs by addressing root causes rather than applying quick patches.\nSupport & Hygiene: Triage technical issues in the teams Slack channels while continuously refining production runbooks and engineering documentation.\nRequired Skills & Qualifications\nEducation: BA/BS degree or higher in Computer Science, a related technical discipline, or equivalent practical experience.\nCore Experience:\n5+ years of software design and development experience, with a strong focus on algorithm-related solutions.\nProgramming Languages: 5+ years of experience programming in Go, Rust, C, or C++.\nDistributed Systems & Networking: Hands-on experience with large-scale distributed systems and core L4 to L7 networking protocols (TCP/IP, HTTP, DNS, eBPF).\nMigration Strategy: Proven experience managing large-scale migrations of live-production legacy infrastructure.\nExperience with open-source traffic infrastructure software (Envoy, HAProxy, Apache Traffic Server).\nWorking knowledge of WAF implementations (e.g., Coraza, ModSecurity), DDoS mitigation engines, rate-limiting frameworks, and TLS/mTLS termination at scale.\nExposure to traffic delivery systems across CDNs, load balancers, and routing matrices.\nHow to Apply\nPlease email your CV & Cover Letter directly to  with the subject line\nSoftware Engineer - 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