Senior .Net Developer
Platform45Johannesburg, Gauteng, South Africa • Western Cape, South Africa
Posted October 27, 2025
Full Time
About the Company
Platform45 is a full‑stack product development studio that partners with startups and enterprises to build scalable software platforms. Leveraging design thinking and agile iteration, the team delivers end‑to‑end solutions—from product strategy and UX/UI design to web and mobile development using Ruby on Rails, React, .NET, Vue, Node, iOS, Kotlin, and Flutter. Since 2008, Platform45 has helped fintechs, mining firms, telecom operators, and entrepreneurs launch market‑leading products such as Howler and Resource Guru. The company’s culture of relentless experimentation and a commitment to creating "one source of truth" drives continuous innovation, positioning it as a trusted partner for businesses that want to accelerate growth through technology.
Job Description
Senior Back-End (.NET) Developer position available at Platform45. Lead the development of complex software solutions, collaborate with cross-functional teams, and drive technical excellence within the organization.
Requirements
- Lead the design, development of scalable back-end systems and APIs
- Provide technical expertise and guidance to development teams
- Collaborate with stakeholders to define system architecture
- Architect and implement microservices and distributed systems
- Conduct code reviews, perform thorough testing, and implement quality assurance processes
- Work closely with clients to understand their needs and propose technical solutions
- Stay updated on emerging technologies, industry trends, and best practices in software development
- Mentor junior / less experienced engineers
- Strong documentation practices
Benefits
- Opportunity to work on challenging projects
- Contribute to the success of our clients and shape the future of our business
- Opportunity to work with cross-functional teams and communicate technical concepts to non-technical stakeholders
