Senior Software Engineer – Remote (South Africa)

About the role

OLX is looking for a Senior Software Engineer to join the Property24 team. You will work remotely from anywhere in South Africa, contributing to the development of high‑performance web, backend and mobile applications that power leading property marketplaces.

Key responsibilities

• Design, develop and maintain web applications using C# and the Microsoft web stack (MVC, Razor, ASP.NET, IIS).
• Build and enhance mobile applications for iOS and Android using technologies such as Mono and Java.
• Implement performance‑optimisation techniques including caching, load balancing, profiling and indexing.
• Collaborate with cross‑functional teams to deliver scalable, user‑centric solutions.
• Maintain relational databases (Microsoft SQL) and ensure data integrity.

Required profile

• Minimum 5 years of professional experience with C#.
• University degree or diploma in Computer Science or a related field.
• South African citizenship.
• Strong attention to detail and willingness to give and receive constructive critique.
• Passion for continuous learning and sharing knowledge with teammates.

Required skills

• C#
• HTML, CSS, Bootstrap, LESS
• MVC, Razor, IIS, ASP.NET
• iOS, Mono, Android, Java
• Caching, Load Balancing, Profiling, Indexing
• Microsoft SQL

What we offer

• Access to the latest development tools and a fast‑paced environment.
• No constant overtime; focus on sustainable delivery.
• Mentorship from experienced engineers and a collaborative culture.