> Markdown version of [/jobs/ext/2635473-senior-software-engineer-net-full-stack](https://www.wearedevelopers.com/jobs/ext/2635473-senior-software-engineer-net-full-stack). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Software Engineer - .NET (Full Stack) - **Company:** WorldPay - **Location:** Cincinnati, OH, United States - **Experience:** Expert - **Salary:** $113,600.0 - $171,575.0 - **Contract:** Permanent contract - **Skills:** ASP.NET, JavaScript (Programming Language), .NET Framework, Application Programming Interfaces (APIs), Agile Methodology, ASP.NET MVC Framework, HTML5, User Authentication, Automation of Tests, C Sharp (Programming Language), Cascading Style Sheets (CSS), Software Quality, Code Review, Information Systems, Continuous Integration, Relational Databases, DevOps, Language Integrated Query, Entity Framework, Microsoft SQL Server, .NET Framework 4, Scrum Methodology, Web Application Security, Software Engineering, Systems Integration, TypeScript, Web Application Frameworks, BI Launch Pad (Software), Enterprise Software Applications, .NET Core, ReactJS, Sonatype, Asp.net Web Api, Backend, Git, Vue.js, AngularJS, Information Technology, Synopsys Black Duck, Front End Software Development, Checkmarx, Restful APIs - **Published:** August 4, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=b5960ab6e5a0e067 ## About the Role This position is not eligible for visa sponsorship, now or in the future. Candidates must be a US Citizen or valid Green Card Holder., * Bachelor's degree in computer science, Engineering, Information Systems, or equivalent practical experience, with 8+ years of software development experience in enterprise application environments. * 6+ years of hands-on C# development experience with deep expertise in .NET Framework, ASP.NET MVC, ASP.NET Web API, ASP.NET Core, and modern .NET platforms (.NET Core/.NET 8+). * Proven experience leading application modernization initiatives, including large-scale migrations from .NET Framework 4.x to .NET Core/.NET, enabling cloud-ready, scalable, and maintainable solutions. * Strong frontend development experience using JavaScript, TypeScript, HTML5, CSS3, and modern frameworks such as Vue.js, React, or Angular, including building and consuming RESTful APIs. * Extensive knowledge of Entity Framework, LINQ, SQL Server, relational database design, authentication, authorization, and web security best practices. * Proficiency with Git, CI/CD pipelines, DevOps practices, automated testing (unit and integration), and code quality/security tools including Snyk, Checkmarx, and BlackDuck. * Strong technical leadership, analytical problem-solving, and communication skills, with experience mentoring engineers and delivering solutions in Agile development environments. It's a bonus if you have * Acts like an owner by taking initiative, driving outcomes independently, and proactively engaging stakeholders to ensure successful delivery. * Demonstrates curiosity and continuous learning, quickly acquiring new technical and business knowledge to make informed decisions and add value. * Collaborates effectively across teams, seeking clarity when needed, sharing knowledge openly, and helping the broader team succeed. ## Description Make your mark at one of the biggest names in payments. We're looking for a Senior Software Engineer - .NET (Full Stack) to join our ever-evolving Launchpad team and help shape the future of global commerce. Launchpad is a Worldpay application designed to streamline merchant onboarding. It collects all necessary merchant details, enabling businesses to quickly start accepting credit card payments and settle transactions on the Worldpay platform. Launchpad includes both a user-friendly UI and robust API components to support seamless integration. What you'll own * Design, develop, and maintain full-stack web applications using C#, ASP.NET Core, .NET, SQL Server, and modern JavaScript frameworks, while leading application modernization initiatives, including the migration of large-scale legacy .NET Framework 4.x applications to .NET Core/.NET, driving cloud-ready architectures, improved performance, scalability, and long-term maintainability. * Design and implement responsive, user-friendly frontend applications using JavaScript, TypeScript, HTML5, CSS3, and modern frameworks such as Vue.js, React, or Angular, while collaborating closely with UX/UI designers, product owners, architects, and cross-functional development teams to deliver high-quality end-to-end solutions * Develop and maintain RESTful APIs, backend services, and integrations with internal and external systems. * Create reusable UI components, libraries, and shared services to improve development efficiency and consistency. * Develop and execute unit, integration, and automated tests to ensure application quality and reliability. * Participate in code reviews, technical design sessions, architecture discussions, and sprint planning activities. * Troubleshoot and resolve application defects, production issues, and performance bottlenecks. ## Related Videos - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [The Resilience of the World Wide Web](https://www.wearedevelopers.com/videos/1281-the-resilience-of-the-world-wide-web) - [Lessons learned from building a thriving Vue.js SaaS application](https://www.wearedevelopers.com/videos/1666-lessons-learned-from-building-a-thriving-vue-js-saas-application) - [Migrating half a million users to a new payment service provider](https://www.wearedevelopers.com/videos/730-migrating-half-a-million-users-to-a-new-payment-service-provider) - [Navigating the Corporate Jungle: Life as a Developer in a large Company](https://www.wearedevelopers.com/videos/621-navigating-the-corporate-jungle-life-as-a-developer-in-a-large-company) - [Git for Code Reviews](https://www.wearedevelopers.com/videos/429-git-for-code-reviews) ## Related Articles - [Best Paying Jobs in Technology](https://www.wearedevelopers.com/magazine/256-best-paying-jobs-in-technology) - [Highest Paying Tech Companies in Europe](https://www.wearedevelopers.com/magazine/162-highest-paying-tech-companies-in-europe) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Fullstack developer salary in Germany [2023]](https://www.wearedevelopers.com/magazine/197-fullstack-developer-salary-in-germany-2023) - [Fullstack Developer Salary UK](https://www.wearedevelopers.com/magazine/251-fullstack-developer-salary-uk) - [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers)