.NET C# Developer

NTT America, Inc.; Greater London; On-site; GBP 45,000 - 65,000; Full time

Job summary

A global technology consulting firm is seeking a talented .NET C# Developer to build innovative, AI-powered software solutions. This role involves developing and maintaining applications using C# and .NET technologies, designing RESTful APIs, and collaborating with cross-functional teams. Candidates should have 3-5 years of experience with .NET Framework, strong problem-solving skills, and the ability to thrive in an Agile environment. The firm promotes inclusivity and offers flexible work options.

Benefits

Flexible work options

Continuous growth and development opportunities

Range of tailored benefits for wellbeing

Qualifications

• 3 to 5 years’ experience working with C# and .NET Framework / .NET Core and Python.
• Experience with ASP.NET MVC / Web API.
• Knowledge of SQL Server and relational database design.
• Familiarity with Entity Framework or other ORM tools.
• Understanding OOP principles.
• Experience with version control systems (e.g., Git).
• Ability to work in Agile/Scrum environments.
• Excellent problem-solving and communication skills.

Responsibilities

• Develop and maintain applications using C#, .NET Core, and ASP.NET.
• Design and implement RESTful APIs and integrate with third-party services.
• Collaborate with product managers, designers, and QA teams.
• Write clean, maintainable, and efficient code.
• Perform unit testing, debugging, and troubleshooting.
• Optimize application performance and ensure security compliance.
• Participate in code reviews and contribute to continuous improvement.
• Maintain documentation for code and processes.

Skills

C# development

ASP.NET Core

RESTful API design

Agile/Scrum methodologies

Problem-solving

Communication skills

Education

Bachelor's degree in Computer Science or related field

Tools

SQL Server

Git

Entity Framework

Job description

The team you'll be working with:

We are looking for a talented and forward-thinking .NET C# Developer to join our team in building innovative, AI-powered software solutions. This role is ideal for someone who thrives at the intersection of traditional software engineering and cutting‑edge AI technologies, particularly Generative and Agentic AI.

You will play a key role in designing, developing, and maintaining scalable, secure, and high-performance applications that leverage the power of .NET and modern AI frameworks.

What you'll be doing:

• Develop and maintain applications using C#, .NET Core, and ASP.NET.

• Design and implement RESTful APIs and integrate with third‑party services.

• <>Collaborate with product managers, designers, and QA teams to deliver robust solutions.

• Write clean, maintainable, and efficient code following best practices.

• Perform unit testing, debugging, and troubleshooting.

• Optimize application performance and ensure security compliance.

• Participate in code reviews and contribute to continuous improvement.

• Maintain documentation for code and processes.

What experience you'll bring:

• Develop and maintain applications using C#, .NET Core, and ASP.NET.

• Design and implement RESTful APIs and integrate with third‑party services.

• Collaborate with product managers, designers, and QA teams to deliver robust solutions.

• Write clean, maintainable, and efficient code following best practices.

• Perform unit testing, debugging, and troubleshooting.

• Optimize application performance and ensure security compliance.

• Participate in code reviews and contribute to continuous improvement.

• Maintain documentation for code and processes.

Qualifications (must have)

• 3 to 5 years’ experience of working with C# and .NET Framework / .NET Core and Python.

• Experience with ASP.NET MVC / Web API.

• Knowledge of SQL Server and relational database design.

• Familiarity with Entity Framework or other ORM tools.

• Understanding of object‑oriented programming (OOP) principles.

• Experience with version control systems (e.g., Git).

• Ability to work in Agile/Scrum environments.

• Excellent problem‑solving and communication skills.

• Experience working in consulting / customer facing roles.

• Please note: You must be eligible for SC (Security Check) clearance to apply for this position.

Desirable / Nice‑to‑Have

• Experience developing or integrating AI-based solutions, especially:

• Generative AI (e.g., LLMs, transformers)

• Agentic AI systems

• Retrieval‑Augmented Generation (RAG)

• Familiarity with Python for AI/ML tasks

• Understanding of AI ethics, data privacy, and responsible AI practices

• Knowledge of front‑end technologies (JavaScript, Angular, React).

• Familiarity with CI/CD pipelines and DevOps practice

Education

Bachelor’s degree in computer science, Software Engineering, or related field (or equivalent experience).

Who we are:

We’re a business with a global reach that empowers local teams, and we undertake hugely exciting work that is genuinely changing the world. Our advanced portfolio of consulting, applications, business process, cloud, and infrastructure services will allow you to achieve great things by working with brilliant colleagues, and clients, on exciting projects.

Our inclusive work environment prioritises mutual respect, accountability, and continuous learning for all our people. This approach fosters collaboration, well‑being, growth, and agility, leading to a more diverse, innovative, and competitive organisation. We are also proud to share that we have a range of Inclusion Networks such as: the Women’s Business Network, Cultural and Ethnicity Network, LGBTQ+ & Allies Network, Neurodiversity Network and the Parent Network.

For more information on Diversity, Equity and Inclusion please click here: Creating Inclusion Together at NTT DATA UK | NTT DATA (https://uk.nttdata.com/creating-inclusion-together)

what we’ll offer you:

We offer a range of tailored benefits that support your physical, emotional, and financial wellbeing. Our Learning and Development team ensure that there are continuous growth and development opportunities for our people. We also offer the opportunity to have flexible work options.

You can find more information about NTT DATA UK & Ireland here: https://uk.nttdata.com/

We are an equal opportunities employer. We believe in the fair treatment of all our employees and commit to promoting equity and diversity in our employment practices. We are also a proud Disability Confident Committed Employer - we are committed to creating a diverse and inclusive workforce. We actively collaborate with individuals who have disabilities and long-term health conditions which have an effect on their ability to do normal daily activities, ensuring that barriers are eliminated when it comes to employment opportunities. In line with our commitment, we guarantee an interview to applicants who declare to us, during the application process, that they have a disability and meet the minimum requirements for the role. If you require any reasonable adjustments during the recruitment process, please let us know. Join us in building a truly diverse and empowered team.