Senior Principal Engineer

2 weeks ago


London, UK, United Kingdom Cititec Talent Full time

Senior Principal Engineer

.NET and Java stack

Hybrid (London, UK)


Cititec Talent are working with a worldwide FinTech company focused on creating secure, simple, and innovative solutions for the payments economy. They connect individuals, businesses, and financial institutions through seamless payment transactions. They are looking for a Senior Principal Engineer to join their wider team in a key lead position.


Role Description:

As a Senior Principal Engineer, you will lead the design, development, and implementation of our client's payment solutions. You will work closely with cross-functional teams to ensure their products meet the highest standards of quality and reliability. Your role will involve hands-on coding, architectural decision-making, and team mentorship. You will be responsible for the end-to-end delivery of software products, ensuring they are scalable, resilient, and aligned with business goals.


Key Responsibilities:

  • Leadership and Ownership: Lead the engineering team in developing robust .NET and Java solutions. Oversee the full software development lifecycle from design to deployment.
  • Architecture and Development: Design scalable and resilient software architectures.
  • Team Enablement: Mentor and guide engineers, fostering continuous improvement. Collaborate with product managers to align on business goals.


Technical Expertise:

  • Extensive experience in .NET development, with a solid understanding of C# and the .NET framework.
  • Proficiency in Java as a secondary language/skill.
  • Industry experience in another strong FinTech, ideally Payments focussed.
  • Proven track record in designing and developing scalable, resilient enterprise solutions.
  • Deep understanding of microservices architecture and domain-driven design principles.
  • Experience with cloud-native solutions and cloud infrastructure, particularly with Azure or AWS.


If you are passionate about technology and excited to drive engineering excellence in a leading payments company, apply below



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