Principal & Staff Software Engineers - Work From Home

Principal & Staff Software EngineersAt a glancePrincipal or Staff Software Engineer role on a mission-critical payments platformLead engineers and influence architecture, design, and deliveryRemote-first with a Belfast city centre officeStrong salary, excellent benefits, and genuine technical ownershipAbout the CompanyOur client is a global payment technology business operating at significant scale, powering commerce for organisations of all sizes across international markets. Their platforms process high volumes of transactions daily and are designed to operate with exceptional levels of resilience, security, and performance.With a well-established engineering presence in NI, the company continues to invest in building and evolving large-scale, high-availability systems that support critical payment flows across multiple regions.The RoleThe Belfast engineering team builds and maintains a high-throughput payments platform responsible for handling millions of transactions every day, where uptime, reliability, and security are non-negotiable.You'll provide senior technical leadership within the team, working hands-on across complex systems while mentoring engineers at varying levels. You'll play a key role in shaping technical direction, influencing architecture, and delivering features from a long-term product roadmap.Key ResponsibilitiesLead analysis, design, and development of complex, high-throughput software systemsDrive best practices in unit testing, documentation, and code qualityAdvise on testing strategies, validation requirements, and remediation of complex issuesApply strong knowledge of engineering standards, methodologies, and PCI complianceEstimate and plan complex initiatives, projects, and technical improvementsSupport deployment activities across test and production environmentsIdentify issues, assess impact, and communicate solutions clearly to technical and non-technical stakeholdersImprove team effectiveness through ideas, mentoring, and technical leadershipSupport and coach engineers through hands-on guidance and on-the-job trainingWhat You'll needDegree in Computer Science or a related discipline6+ years' commercial software development experienceStrong experience building server-side systems in a .NET environment (C#, .NET)Experience designing and implementing scalable web servicesSolid experience with relational databases such as SQL ServerStrong understanding of design patterns, refactoring, and object-oriented designExcellent analytical, problem-solving, and communication skillsExperience working in Agile delivery environmentsMust be based in Northern Ireland or within commuting distance to BelfastWhy Apply?Competitive salary up to £70k plus bonusRemote-first flexibility with a modern Belfast city centre office26 days annual leave plus bank holidaysPrivate medical and dental coverHigh trust environment with real ownership and influenceStrong focus on engineering excellence and professional growthFor more information on this opportunity, connect with Neill Ferguson on LinkedIn or submit your CV via the link below. #J-18808-Ljbffr