Senior Software Engineer / Senior .NET Developer - 12 month contract (renewable)- Cape Town (Hybrid)

Position Summary

We are seeking a skilled Senior Software Engineer / Senior .NET Developer on a contract basis to support the continued development and enhancement of the IS3P (Information Security Self-Service Platform) and related Information Security initiatives.

The successful candidate will be responsible for designing, developing, integrating, testing, and supporting enterprise-grade web applications and services, working closely with business analysts, security specialists, project managers, and other developers.

Location

• Cape Town (Hybrid)
• Preference for Cape Town-based candidates

Experience Required

• Minimum 8-10 years software development experience
• Minimum 5 years hands-on experience with Microsoft .NET technologies
• Proven experience delivering enterprise applications in complex corporate environments
• Experience working within Financial Services, Insurance, Banking, or large enterprise environments advantageous
• Experience working as a senior developer or technical lead

Technical Skills

Essential

• C#
• .NET Framework and .NET Core / .NET 8+
• ASP.NET MVC
• ASP.NET Web API
• Entity Framework
• REST API development and integration
• Microsoft SQL Server
• T-SQL
• JavaScript
• HTML5
• CSS3
• Git source control

• React or Angular

Preferred

• Azure Cloud Services
• Azure App Services
• Azure DevOps
• CI/CD pipelines
• Blazor
• PowerShell scripting
• API security best practices
• Identity and Access Management integrations
• Active Directory integration
• OAuth2 / OIDC / SAML authentication

Responsibilities

Solution Development

• Design and develop secure, scalable enterprise applications.
• Build and maintain APIs and system integrations.
• Develop enhancements and new functionality for the IS3P platform.

Application Support

• Resolve production defects and incidents.
• Perform root cause analysis.
• Optimise application performance and reliability.

Technical Design

• Produce technical specifications and solution designs.
• Participate in architecture and design reviews.
• Recommend technology improvements and modernisation opportunities.

Security and Compliance

• Apply secure coding practices.
• Ensure solutions align with the company security standards.
• Support remediation of security findings and vulnerabilities.

Collaboration

• Work closely with Business Analysts, Security Specialists and Project Managers.
• Participate in Agile ceremonies and sprint planning.
• Mentor junior developers where required.

Personal Attributes

• Strong analytical and problem-solving skills
• Excellent communication skills
• Self-driven and able to work independently
• Strong stakeholder engagement capability
• Attention to detail
• Ability to operate effectively within a regulated enterprise environment

Nice-to-Have Experience

Candidates with experience in one or more of the following will be viewed favourably:

• Information Security platforms
• Identity and Access Management (IAM)
• Governance, Risk and Compliance solutions
• Service Account Management
• Vulnerability Management solutions
• Reporting and dashboard development
• Integration with enterprise security tooling

Deliverables

The successful contractor will be expected to:

• Deliver new IS3P functionality.
• Support ongoing production operations.
• Develop integrations with internal security platforms.
• Improve automation and reporting capabilities.
• Participate in project delivery and technical design activities.
• Contribute to platform stability, scalability and maintainability.