Senior Web Developer

Responsibilities / Key Tasks

Maintain and enhance existing functionality while designing and developing new components to support evolving business needs.

Develop a deep understanding of the current product architecture and business domain collaborating with business analysts to refine requirements

and implement high quality solutions.

Refactor optimise and modernise codebases to ensure long term maintainability scalability and adaptability to future requirements.

Assess and improve application performance reliability and high availability capabilities across all environments.

Create comprehensive unit tests and integrated system tests to validate that new and existing functionality operates as intended. Support testing

processes by developing and executing functional test scenarios during development.

Produce clear and detailed technical documentation outlining system architecture components and operational guidelines.

Conduct in depth root cause analysis (RCA) to identify and resolve defects within complex integrated systems.

Build package and deploy applications onto application servers or cloud platforms ensuring smooth and reliable release cycles.

Collaborate effectively within a multidisciplinary team contributing to continuous improvement of development standards practices and processes.

Closing date: 10 April 2026

Vacancy type: Permanent

Hybrid working conditions the successful candidate must be based in Gauteng.

Vacancy open to people with disabilities.

Minimum Requirements

Relevant tertiary qualification in Information Technology Computer Science Engineering or a related field or Matric with more than 8-10 years of

hands-on development experience within a custom software development environment with multiple production releases per year.

Strong proficiency C# with proven expertise in developing enterprise grade web applications. (VB an advantage)

A minimum of 5 years experience as a Senior Web Developer in a application environment and at least 10 years of experience as

a Front-End Developer.

Practical experience with modern web technologies including JavaScript/TypeScript Angular HTML5 and React.

Solid understanding of RESTful frameworks with experience working with JSON and XML-based data exchange.

Working knowledge of web application security principles including common vulnerabilities and best-practice prevention techniques.

Strong collaborative skills with the ability to work within cross functional teams and translate use cases or user stories into intuitive user interfaces.

Comprehensive understanding of SDLC methodologies including Agile and Waterfall along with associated tools processes and best practices.

Experience with the Following Technologies

Angular (Version 6 and above) with strong proficiency in building scalable component based front end applications.

Advanced knowledge of and C# .NET including deep understanding of JavaScript CSS XML TypeScript and HTML.

Practical experience working with Microsoft Internet Information Services (IIS) preferably IIS 7 and later.

Demonstrated integration experience using SOAP and RESTful web services.

Strong understanding of XML and JSON message structures including namespace management schema utilisation and structured data handling.

Solid experience with SQL and relational database development specifically Microsoft SQL Server (2008 and later) and Azure SQL.

Proficient in API testing and validation using SoapUI and Postman.

Candidates must have prior experience using source control/version control software such as Microsoft Visual SourceSafe Git Azure DevOps

Repos or other industry standard tools.

Hands-on experience with Microsoft development toolsets including:

oVisual Studio

oIIS 7

oSQL Server Management Studio (SSMS 2012)

oSOAP/REST service development and debugging tools

Azure Cloud Experience (Advantageous)

Experience or exposure to the following Microsoft Azure services will be highly beneficial:

Azure Cloud Platform

Azure SQL Database

Azure Storage Accounts

Azure Functions

Azure Queue Storage

Azure App Services

Azure DevOps (Pipelines Repos Boards)

Azure Cognitive Services

Technical Expertise

Advanced Programming

Demonstrates strong proficiency Core and C# development with deep understanding of object-oriented programming principles

multithreading memory management and techniques for achieving optimal application performance.

.NET Framework Expertise

Extensive experience working with Core framework including designing deploying and operating applications within Azure-native

environments.

RESTful Web Services

Proven track record in designing developing and consuming RESTful APIs adhering to REST principles and ensuring endpoint scalability security

and high performance.

Azure Cloud Proficiency

Demonstrated working knowledge of multiple Azure cloud implementations completed within the last three years.

Security Standards & Vulnerabilities

Strong experience identifying and resolving web-based security vulnerabilities with solid knowledge of the OWASP Top Ten and hands-on

collaboration with cybersecurity teams.

Project Experience

Proven experience delivering enterprise-scale web applications with substantial active user bases including solutions involving user registration

secure access control role management transactional processing and integrated payment mechanisms.

Industry Experience

Experience in financial services and tax-related systems with exposure to environments such as eFiling considered an advantage.

DevOps

Working knowledge of Azure DevOps processes including pipeline configuration release management and cloud-based development workflows.

Production Diagnostics

Skilled in diagnosing and resolving production issues related to application performance and transactional failures. Able to operate effectively

under pressure by rapidly reviewing activity logs and application logs to drive issues to meaningful resolution.

Functional Correctness

Provides guidance to development teams on best-practice implementation approaches that align with established architectural patterns and

functional standards.

Personal Profile

Self-starter and highly self-motivated with a strong sense of ownership and the ability to drive tasks and initiatives to completion.

Resilient and emotionally mature able to receive feedback constructively and not easily offended maintaining professionalism in all interactions.

Calm and composed under pressure with the ability to work effectively in high stress environments while delivering consistent results.

Strong team player with experience collaborating across cross functional teams; prior experience in leading or mentoring development teams is

advantageous.

Excellent written and verbal communication skills with strong interpersonal abilities suited to both technical and non-technical stakeholders.

High attention to detail with a strong commitment to producing clean maintainable and high-quality code.

Proven ability to conduct root cause analysis in complex integrated environments especially under severe operational pressures.

Strong analytical and problem-solving skills with the ability to multitask and manage multiple priorities simultaneously.

Lifelong learner committed to ongoing professional development and staying current with evolving technologies and best practices.