{"id":3073457,"url":"https://alion.io/job/cpl-senior-software-engineer-net-sql","title":"Senior Software Engineer (.NET / SQL)","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":75,"open_postings":39,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":26,"computed_at":"2026-10-24T06:02:35Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"contractor","work_mode":"hybrid","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":null,"salary_estimate":{"min_usd":70000,"max_usd":145000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":38},"experience_years_min":6,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":".NET","optional":false},{"name":"Azure","optional":false},{"name":"C#","optional":false},{"name":"MS SQL","optional":false},{"name":"SQL","optional":false}],"status":"live","first_seen_at":"2026-10-22T08:32:45Z","employer_posted_date":"2026-10-22","last_verified_at":"2026-10-23T00:18:28Z","board_verified":true,"closed_at":null,"days_open":2,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":2},"description":"We're partnering with a leading organisation embarking on a major investment programme to strengthen and modernise its enterprise payroll and billing platforms. This is an opportunity for an experienced Software Engineer to join a high-impact team focused on improving the resilience, performance, and scalability of business-critical financial systems.\nThis contract role would suit someone who enjoys working in complex enterprise environments, solving production challenges, optimising SQL-heavy systems, and driving technical improvements within established platforms.\nThe Opportunity\nAs a Senior Software Engineer, you'll take ownership of key payroll and billing workflows within a high-volume transactional environment. You'll work closely with engineering and business stakeholders to identify issues, optimise performance, reduce technical risk, and support future transformation initiatives.\nThis is a hands-on role combining production support, troubleshooting, system optimisation, technical documentation, and continuous improvement work.\nContract Details\n6-month initial contract\nDublin-based hybrid model (2 days onsite per week)\nImmediate start preferred\nDaily rate contract\nHigh-profile transformation programme with strong executive sponsorship \nKey Responsibilities\nOwn and support critical payroll and billing applications\nTroubleshoot complex production issues and perform root cause analysis\nOptimise SQL Server databases, stored procedures, and performance bottlenecks\nRefactor and improve existing application architecture\nEnhance documentation and knowledge sharing across systems\nWork across multiple integrations, middleware services, and legacy platforms\nContribute to future modernisation and transformation initiatives \nTechnology Environment\nC#\n.NET Framework / .NET\nMicrosoft SQL Server\nStored Procedures\nAzure (beneficial)\nEnterprise integrations\nFinancial and payroll systems\nLegacy and modern application components \nRequired Experience\n6+ years' experience in software engineering\nStrong hands-on C# and .NET development experience\nAdvanced SQL Server expertise, including:Stored procedures\nQuery optimisation\nIndexing\nExecution plans\nPerformance tuning\n\nExperience supporting high-volume transactional systems\nBackground working within complex enterprise environments\nExperience navigating and improving legacy applications\nStrong problem-solving and documentation skills\nAbility to work independently and take ownership of critical systems \nNice to Have\nAzure cloud experience\nPayroll, finance or billing systems exposure\nExperience supporting modernisation or transformation programmes\nExperience working in regulated or compliance-driven environments \nWhat's on Offer?\nOpportunity to make a significant impact on critical enterprise systems\nVaried, hands-on technical work\nStrong mix of production engineering and modernisation projects\nCollaborative engineering environment\nHybrid working model in Dublin\nImmediate contract opportunity with potential for extension \nApply Now\nIf you're an experienced .NET Engineer with strong SQL Server expertise and a track record of improving business-critical applications, we'd love to hear from you.\nFor a confidential discussion, apply today or contact our technology recruitment team.","description_format":"text","description_chars":3267,"description_truncated":false,"requirements":{"experience_years_min":6,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Hybrid 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