Principal Software Engineer C#.Net AWS – FinTech

Overview

You will architect and deliver high-performance, scalable systems using the Microsoft tech stack, working closely with cross-functional Agile teams. You’ll lead development efforts, promote best practices, and ensure on-time delivery while driving the adoption of AI initiatives such as chatbots. Reporting to the CTO, you gain visibility and influence in a fast-growing FinTech scale-up. This role blends technical leadership with strategic impact, including collaboration across the business to shape technical direction.

Pay / Benefits

• Salary to 120k
• Bonus ~20%
• Pension 5% employer contribution
• 25 days holiday (27 after 2 years, 30 after)
• Life Assurance 4x base salary
• Employee Assistance Programme

Responsibilities

• Architect and build scalable, high-performance solutions using C#/.NET
• Promote software engineering best practices and SOLID design principles
• Collaborate with cross-functional Agile teams in two-week sprints
• Drive AI initiatives and explore chatbot and automation opportunities
• Ensure delivery to schedule and maintain high-quality code
• Partner with the CTO and provide technical leadership with visibility into outcomes

Key requirements

• Strong C# backend development skills
• Experience with Python
• Good knowledge of AWS
• Experience on highly scalable systems
• Solid grounding in CS fundamentals (OOP, data structures, design patterns)
• Interest in Artificial Intelligence and related tools
• Strong analytical, problem-solving, planning and organizational skills
• Excellent communication and stakeholder management

• strong communication
• stakeholder management
• problem solving
• C# / .NET
• Python
• AWS

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