Senior Web Developer

ATS Client; Pretoria; On-site; ZAR 900,000 - 1,200,000; Full time

Benefits offered by this job

null

Job summary

ATS Client in Pretoria is seeking a Senior Web Developer with strong .NET and front-end capabilities to modernise high-stakes web apps relied on by millions. You will design, build, and optimise multi-tier systems, ensuring scalability, reliability, and maintainability across environments.

The role requires deep expertise in JavaScript/TypeScript, Angular, ASP.NET, HTML5, React, RESTful services, and SQL Server/Azure SQL. API testing with SoapUI and Postman is essential.

Qualifications

• Tertiary qualification or Matric with extensive development experience in a custom software environment.
• Strong .NET C# proficiency with enterprise web apps experience.
• Minimum 5 years as a Senior Web Developer in a multi-tier .NET environment.
• At least 10 years as a Front-End Developer.
• Hands-on with JavaScript/TypeScript, Angular, ASP.NET, HTML5, React.
• Experience with RESTful services using JSON and XML.
• Proficient with SQL Server (2008+), Azure SQL.
• API testing experience with SoapUI and Postman.

Responsibilities

• Maintain and enhance existing functionality while designing new components.
• Understand product architecture and refine requirements with business analysts.
• Refactor and modernise code for long-term maintainability and scalability.
• Improve application performance, reliability, and high availability.
• Create unit and integration tests; support functional testing.
• Produce technical documentation outlining architecture and guidelines.
• Conduct root cause analyses to resolve defects in complex systems.
• Build, package, and deploy applications to servers or cloud platforms.
• Collaborate with multidisciplinary teams to improve development standards.

Skills

.NET C#

Front-End Development

TypeScript

Angular

ASP.NET

HTML5

React

RESTful APIs

JSON/XML

SQL Server

Azure

Education

Relevant tertiary qualification in Information Technology

Matric with 8-10 years hands-on development experience

Tools

SoapUI

Postman

Job description

Job Description

Hey Code Wizard, Tax‑Slaying Superhero Wanted! Tired of building boring enterprise apps that put everyone to sleep? Ready to level up and bring some serious swagger to South Africa's tax system? We're hunting for a Senior Web Developer with serious front‑end firepower and .NET muscle to join our high‑energy team in Pretoria. This isn't your average maintenance gig – you'll be modernising, optimising, and straight‑up future‑proofing complex, high‑stakes web applications that millions of South Africans rely on every year.

Responsibilities

• 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.

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 in .NET 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 multi‑tiered .NET application environment.
• At least 10 years of experience as a Front‑End Developer.
• Practical experience with modern web technologies, including JavaScript/TypeScript, Angular, ASP.NET, HTML5, and React.
• Solid understanding of RESTful frameworks, with experience working with JSON and XML based data exchange.
• 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.

Ready to apply? Drop your CV and let's make tax tech sexy again!