Senior C# Developer

Role Overview

We are an established IT services company working closely with clients in the banking and financial services sector. We are looking for a Senior C# Developer to lead the design and delivery of enterprise-grade software solutions for a major banking client.

This role combines hands-on development with technical leadership, operating within a regulated banking environment while remaining part of a professional, delivery-focused IT organisation.

Key Responsibilities

• Design, develop, and maintain secure, scalable applications using C# and .NET (.NET Core / .NET 6+)
• Act as technical lead for development activities on banking client engagements
• Take ownership of solution architecture, code quality, and technical standards
• Lead and mentor developers through code reviews, coaching, and best practices
• Ensure solutions comply with client security, risk, and regulatory requirements
• Work closely with client stakeholders, product owners, and internal delivery teams
• Contribute to technical estimations, planning, and delivery commitments
• Identify, communicate, and mitigate technical risks in a client-facing environment

Required Skills and Experience

• Strong commercial experience with C# and the .NET ecosystem
• Proven experience in a senior engineering role
• Solid understanding of enterprise application architecture and design patterns
• Experience building and consuming RESTful APIs
• Strong knowledge of relational databases (e.g. SQL Server, Oracle, PostgreSQL)
• Experience with cloud and hybrid environments (Azure preferred)
• Familiarity with security and compliance requirements in banking or regulated industries
• Comfortable working in client-facing roles with high expectations on quality and delivery

Nice to Have

• Prior experience working for an IT consultancy or systems integrator
• Exposure to banking platforms, core banking systems, or financial data flows
• Experience with microservices, messaging systems, or event-driven architectures
• Knowledge of CI/CD pipelines, DevSecOps, and automated testing
• Experience working in agile delivery models with enterprise clients

What We Offer

• Competitive salary and benefits package
• Hybrid working model with London as primary client location
• Exposure to complex, high-impact banking projects
• A professional consulting environment with strong technical standards
• Clear career progression within technical leadership or solution architecture