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Senior Full Stack Developer / Engineering Lead – .NET & JavaScript

Elavon, a U.S. Bank subsidiary, provides payment solutions and transaction processing services to 1.5 million customers globally.
Frontend
Staff Software Engineer
Hybrid
5,000+ Employees
10+ years of experience
Finance

Description For Senior Full Stack Developer / Engineering Lead – .NET & JavaScript

Elavon, a wholly-owned subsidiary of U.S. Bank, is seeking a Senior Full Stack Developer/Engineering Lead to join their team in London. This role combines technical leadership with hands-on development, focusing on building internal tools and platforms that drive business efficiency. The position requires expertise in .NET, JavaScript, and full-stack development, with responsibilities spanning from architecture design to implementation of user-facing applications.

The role offers an exciting opportunity to work on mission-critical systems that support operations, risk management, and regulatory reporting. The ideal candidate will bring 10+ years of software engineering experience and a proven track record of delivering scalable solutions. They will lead technical projects while working closely with cross-functional teams to create tools that hundreds of users rely on daily.

Key technical requirements include deep expertise in C#, .NET Core, JavaScript, and various frontend technologies, along with experience in data visualization and Microsoft ecosystem integration. The position offers a hybrid working model with 3+ days in office, providing flexibility while maintaining team collaboration.

The company provides a comprehensive benefits package and emphasizes career growth opportunities. As part of U.S. Bank, one of the world's most ethical companies, the role offers the chance to work in a diverse, multinational environment while contributing to solutions that serve over 1.5 million customers globally.

This is an excellent opportunity for a senior developer who enjoys autonomy, innovation, and making direct business impact. The role combines technical excellence with leadership responsibilities, making it ideal for someone ready to take the next step in their career while maintaining hands-on involvement in development.

Last updated 12 hours ago

Responsibilities For Senior Full Stack Developer / Engineering Lead – .NET & JavaScript

  • Design and build robust full-stack applications using the Microsoft stack (.NET Core, C#, JavaScript, EF)
  • Architect and develop dynamic, configurable web-based platforms for internal business users
  • Implement data visualization and reporting tools (D3.js, ECharts)
  • Create APIs and background services for real-time processing and automation
  • Build UI components with Bootstrap, HTML/CSS, and drag-and-drop functionality
  • Integrate tools with Outlook and Exchange for advanced email workflow automation
  • Ensure all solutions are well-tested, version-controlled, and auditable
  • Collaborate with cross-functional teams including Operations, Risk, and IT
  • Support product rollouts, user training, and continuous improvement cycles

Requirements For Senior Full Stack Developer / Engineering Lead – .NET & JavaScript

JavaScript
TypeScript
MongoDB
  • 10+ years in software engineering with experience across the full stack
  • Deep hands-on expertise with C#, .NET Core, ASP.NET, JavaScript, EF (EF6 and EF Core)
  • Experience building internal platforms or tools used by non-technical business users
  • Strong frontend skills: JavaScript, HTML, CSS, Bootstrap, D3.js or similar libraries
  • Experience with MongoDB, SQL Server, and data-driven applications
  • Familiarity with Microsoft Exchange / Outlook integration (EWS or add-ins)
  • Ability to lead technical projects from concept to delivery
  • Knowledge of risk/control frameworks and regulatory data processes is a plus
  • Excellent communication and problem-solving skills
  • Self-starter with a passion for delivering high-value solutions that scale

Benefits For Senior Full Stack Developer / Engineering Lead – .NET & JavaScript

Medical Insurance
  • Health protection benefits
  • Financial security benefits
  • Career development resources
  • Flexible/hybrid work schedule

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