Senior Dotnet Developer

Job Type: Permanent

Location: Belfast, UK / Dublin, Ireland

Mode of Working: Hybrid

Working Hours: 40 hours per week (Full-time)

Are you looking to develop and deliver enterprise-grade applications using modern .NET technologies?

We have an exciting opportunity for you
- Senior .NET Developer
!

TCS is a purpose-led transformation company, built on belief. We go beyond helping businesses transform through technology—we enable them to make a meaningful difference to the people and communities they serve. Our clients include leading organisations across the UK and globally.

At TCS, it means more—more opportunity to make an impact that matters through challenging projects that demand innovation, collaboration, and thought leadership.

• Build strong relationships with a diverse range of stakeholders.
• Gain access to continuous learning and professional development opportunities.
• Work closely with cross-functional teams to deliver innovative business solutions.

As a Senior .NET Developer
, you will be responsible for designing, developing, testing, and maintaining enterprise applications, backend services, and microservices within a regulated financial services environment. You will contribute across the full software development lifecycle, ensuring high-quality, scalable, and secure solutions while supporting operational excellence and continuous improvement initiatives.

• Design, develop, test, and maintain .NET-based applications, services, and microservices to support business requirements.
• Contribute to feasibility studies, effort estimation, technical planning, and solution design activities.
• Participate in all phases of the software development lifecycle, including analysis, design, development, testing, deployment, and support.
• Analyse complex business and technical problems and develop effective, scalable solutions.
• Develop and implement secure, reliable, and high-performing application architectures.
• Collaborate with business users, stakeholders, and technology teams to define requirements and deliver solutions.
• Support production systems and perform root-cause analysis for incidents and defects.
• Ensure development standards, operating procedures, and best practices are followed.
• Mentor and support junior developers and team members.
• Contribute to continuous improvement initiatives across development practices, tooling, and delivery processes.
• Work independently while managing competing priorities and deliverables.

• Experience in application development, software engineering, or systems analysis roles.
• Strong proficiency in .NET Core and C# development.
• Strong experience with T-SQL and Microsoft SQL Server (2019/2022).
• Experience developing REST APIs and event-driven solutions.
• Hands-on experience with React.js for front-end development.
• Experience with Kafka (KaaS – Kafka as a Service).
• Experience with containerisation technologies such as Docker and Open Shift.
• Strong understanding of microservices architecture and distributed systems.
• Experience using source control and development tools including Git Hub, Bitbucket, and Git Hub Copilot.
• Extensive experience analysing, designing, developing, and supporting enterprise applications.
• Demonstrated leadership, project delivery, and stakeholder management capabilities.
• Strong written and verbal communication skills.
• Experience working within Banking, Financial Services, or other regulated environments.
• Additional experience designing and implementing microservices architectures.
• Exposure to cloud-native deployment practices and Dev Ops methodologies.
• Familiarity with CI/CD pipelines and automated software delivery processes.
• Experience working in Agile development environments.

TCS is consistently voted a…