Sr. Fullstack .Net Developer

About the job***This role is NOT open to C2C. The position is FTE only and is unable to consider sponsorship now or in the future***Job Title: Sr. Fullstack .Net DeveloperLocation: New York on-siteJob SummaryWe are seeking a senior, full-stack engineer who thrives on owning complex systems from end to end. This role is well-suited for someone who can balance system modernization with operational stability while delivering meaningful impact across the organization.As a key member of the engineering team, this individual will collaborate closely with cross-functional agile teams to design and deliver software solutions that support daily business operations. The role involves bringing product vision to life across a mix of on-premises and cloud-based architectures.A huge plus would be someone using more recent tools like Azure, Docker, Kubernetes, etc...Primary ResponsibilitiesDesign, develop, and support scalable .NET applications spanning web, API, and background processing componentsEnhance and modernize existing platforms while ensuring the reliability of critical production systemsCollaborate with Solution Architects to implement established architectural patterns and technical standardsAct as a contributor to the technical backlog, partnering with the team to identify, prioritize, and address technical debtProactively identify opportunities for improvement and translate them into actionable user storiesDevelop and maintain CI/CD pipelines, automated testing frameworks, and deployment workflowsWork closely with product owners and engineering teams to deliver solutions for high-priority business needsMonitor system performance and reliability through logs, metrics, and dashboardsProduce and maintain clear documentation covering system design, architecture decisions, and development practicesParticipate in user acceptance testing, production deployments, and on-call support rotationsStay up to date with emerging technologies and best practices, sharing knowledge across the teamEducation RequirementsHigh School Diploma or equivalent requiredBachelor’s degree in Computer Science or a related field preferred (or equivalent hands-on experience)Required Experience, Skills & Knowledge5–8 years of progressive software engineering experience, including development of .NET applications using C# (.NET 6+, Windows Services, WinForms)3–5 years of experience building modern web applications using TypeScript (Vue.js preferred)3–5 years of experience designing, developing, and maintaining SQL Server databasesPrior experience within Financial Services environments is a plusStrong expertise in building RESTful APIs using C# (including Swagger and OData)Solid understanding of object-oriented programming principles and design patternsExperience working with containerized environments (Docker, Kubernetes, Helm)Familiarity with Agile development methodologies and team collaboration practicesExperience developing solutions within a major public cloud platform (Azure preferred)Exposure to reporting and analytics tools such as Power BI, Tableau, or InformerExperience supporting or integrating with legacy systems (e.g., SOAP, Classic ASP, legacy ASP.NET)Working knowledge of architectural frameworks and principles such as SOLID, GoF, and Clean Architecture