Senior Dotnet Developer

If you require any support in completing your application or need this document in an alternative format, please contact the recruitment team at UKI.recruitment@tcs.com or call the TCS London Office on 020 3155 2100. Please include the subject line: “Application Support Request”.

Role: Senior .NET 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!

Careers at TCS: It Means More

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.

The Role

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.

Key Responsibilities

• 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.

Your Profile

Essential Skills & Experience

• 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 OpenShift.
• Strong understanding of microservices architecture and distributed systems.
• Experience using source control and development tools including GitHub, Bitbucket, and GitHub Copilot.

Desirable Skills & Experience

• Experience working within Banking, Financial Services, or other regulated environments.
• Additional experience designing and implementing microservices architectures.
• Exposure to cloud-native deployment practices and DevOps methodologies.
• Familiarity with CI/CD pipelines and automated software delivery processes.
• Experience working in Agile development environments.

Rewards & Benefits

TCS is consistently voted a Top Employer in the UK and globally. Our competitive salary packages feature pension, health care, life assurance, laptop, phone, access to extensive training resources and discounts within the larger Tata network.

Diversity, Inclusion and Wellbeing

Tata Consultancy Services UK&I is committed to meeting the accessibility needs of all individuals in accordance with the UK Equality Act 2010 and the UK Human Rights Act 1998.

We believe in building and sustaining a culture of equity and belonging where everyone can thrive. Our diversity and inclusion motto is ‘Inclusion without Exception’. Our continued commitment to Culture and Diversity is reflected across our workforce implemented through equitable workplace policies and processes.

You’ll find a welcoming culture and many internal volunteering and social networks to join (these are optional). Our diversity, inclusion and social activities include 12 employee networks such as gender diversity, LGBTQIA+ & Allies, mental health, disability & neurodiversity inclusion and many more, as well as health & wellness initiatives and sports events and we sponsor the London Marathon.

We welcome and embrace diversity in race, nationality, ethnicity, disability, neurodiversity, gender identity, age, physical ability, gender reassignment, sexual orientation. We are a disability inclusive employer and encourage disabled people to apply for this role.

If you are an applicant who needs any adjustments to the application process or interview, please contact us at UKI.recruitment@tcs.com with the subject line: “Adjustment Request” or call TCS London Office 02031552100 to request an adjustment. We welcome requests prior to you completing the application and at any stage of the recruitment process.

Next Steps

Due to a high volume of applications, we will be unable to contact each applicant individually on the status of their application. If you have not received a direct response within 30 days, then it should be deemed unsuccessful on this occasion.

Join us and do more of what matters. Apply online now.