Senior Full-Stack .NET Developer

NTT DATA, Inc.; Johannesburg; On-site; ZAR 900,000 - 1,500,000; Full time

Job summary

NTT DATA, Inc. in Johannesburg is seeking a senior hands-on software engineer to design, develop and support enterprise applications across the frontend, services and database layers.

You will guide other developers as a technical lead and own production outcomes in a complex enterprise setting. You will design and build enterprise web apps with C#, .NET and Angular, create REST APIs, optimise SQL Server databases, and mentor junior developers while collaborating with product owners and

Qualifications

• Nine years of professional software-development experience.
• Strong experience with C# and the .NET ecosystem.
• Extensive experience with Angular and TypeScript.
• Strong knowledge of HTML, CSS and responsive design.
• Strong practical experience with SQL Server and T‑SQL.
• Experience designing and consuming REST APIs.
• Experience integrating multiple systems.
• Understanding of authentication, authorization and secure development practices.
• Experience with Git-based development workflows.
• Experience diagnosing and supporting production applications.
• Working knowledge of automated testing and code-quality practices.
• Experience working in Agile delivery environments.

Responsibilities

• Design and develop enterprise web applications using C#, .NET and Angular.
• Build and maintain REST APIs and system integrations.
• Design and optimise SQL Server databases, queries and stored procedures.
• Convert business requirements into practical technical designs.
• Develop maintainable front-end components using Angular and TypeScript.
• Investigate and resolve application defects across front-end, API and database layers.
• Participate in architecture and design discussions.
• Perform code reviews and promote engineering standards.
• Mentor junior and intermediate developers.
• Support testing, deployment, monitoring and production operations.
• Identify technical debt, operational risks and improvement opportunities.
• Collaborate with product owners, analysts, testers, infrastructure teams and business stakeholders.
• Produce concise technical documentation for important designs and operational processes.

Skills

C# and .NET

Angular

TypeScript

HTML/CSS

SQL Server/T‑SQL

REST APIs

Git

Agile

Mentoring

Production support

Education

Matric and a Tertiary Degree

Tools

Azure DevOps

Docker

CI/CD

Job description

Summary of Role

We need a senior, hands‑on software engineer who can design, develop and support enterprise applications across the front end, application‑services and database layers. The person will operate as a senior individual contributor with technical‑lead responsibilities. They must be able to translate complex business requirements into maintainable solutions, guide other developers, integrate with enterprise systems and take ownership of production outcomes.

Responsibilities

• Design and develop enterprise web applications using C#, .NET and Angular.
• Build and maintain REST APIs and system integrations.
• Design and optimise SQL Server databases, queries and stored procedures.
• Convert business requirements into practical technical designs.
• Develop maintainable front‑end components using Angular and TypeScript.
• Investigate and resolve application defects across front‑end, API and database layers.
• Participate in architecture and design discussions.
• Perform code reviews and promote engineering standards.
• Mentor junior and intermediate developers.
• Support testing, deployment, monitoring and production operations.
• Identify technical debt, operational risks and improvement opportunities.
• Collaborate with product owners, analysts, testers, infrastructure teams and business stakeholders.
• Produce concise technical documentation for important designs and operational processes.

Qualifications and Experience

• Matric and a Tertiary Degree
• 9 years of professional software‑development experience
• 7 years working with C# and the .NET ecosystem
• Strong experience with Angular and TypeScript
• Strong knowledge of HTML, CSS and responsive application design
• Strong practical experience with SQL Server and T‑SQL
• Experience designing and consuming REST APIs
• Experience integrating multiple internal or external systems
• Understanding of authentication, authorisation and secure‑development practices
• Experience with Git‑based development workflows
• Experience diagnosing and supporting production applications
• Working knowledge of automated testing and code‑quality practices
• Experience working in Agile delivery environments

Highly desirable experience

• Azure services and Azure DevOps
• Docker and containerised workloads
• CI/CD pipelines
• Legacy application modernisation
• CQRS or similar application architecture patterns
• Mobile development using Flutter, Ionic or comparable technologies
• Node.js or React
• Application observability, logging and performance monitoring
• Experience in consulting or complex enterprise environments
• UI/UX or usability experience

Leadership expectations

• Independently lead a technical workstream
• Break a solution into deliverable increments
• Identify technical and delivery risks early
• Explain technical decisions clearly
• Provide constructive code‑review feedback
• Mentor less‑experienced developers
• Challenge weak designs professionally
• Take responsibility for a solution after deployment

Behavioural qualities

• Ownership rather than task completion
• Structured problem‑solving
• Intellectual curiosity
• Attention to detail
• Practical judgement
• Clear written and verbal communication
• Patience when supporting colleagues
• Comfort working with incomplete requirements
• Willingness to work in existing codebases
• Ability to balance delivery speed with maintainability