South Africa: Senior Full-Stack Developer (C# ASP.NET, JavaScript) – Remote posted by DataFin Recruitment

About the Role

Our client is a rapidly expanding international consultancy specializing in bespoke software development and digital transformation solutions for a diverse corporate clientele. They are currently seeking a Senior Full-Stack C# ASP.NET Developer, which is a key technical position within a small, agile, and globally distributed team. The role demands a high level of technical expertise and leadership, encompassing the entire software development lifecycle.

Key Responsibilities

• Write high-quality, maintainable, and well-tested code, with careful consideration for team standards, readability and long-term sustainability.
• Participate in and lead peer code reviews to ensure quality, consistency, and knowledge sharing across the team.
• Provide clear guidance, constructive feedback, and ongoing mentorship to less Senior Developers, supporting their technical growth and confidence.
• Take a lead role in the design and implementation of software solutions, overseeing the technical direction and execution of large or complex projects.
• Translate technical and business requirements into well-scoped, iterative deliverables that support incremental progress and predictable outcomes.

Requirements

• Qualifications:
• A Bachelors Degree in Computer Science, IT, Engineering, or proven equivalent professional experience.

Technical Stack & Requirements

• 9+ Years of professional Full-Stack Development experience with a proven track record of leading technical deliverables and mentoring team members.
• Solid, hands-on experience with C# and NET, applying best practices to build reliable and scalable applications.
• Excellent knowledge of modern web client-side technologies, including JavaScript frameworks (such as Angular, React or Vue), TypeScript, and CSS, with an understanding of how these fit into a cohesive Frontend architecture.
• Ability to work effectively within existing frameworks, patterns and architectural decisions, adding value while maintaining consistency and technical integrity.
• Proven experience in a formal Software Development environment, contributing to production systems and collaborating within a professional team.
• Solid understanding of Object-Oriented design principles and their practical application in day-to-day development.
• Good working knowledge of SQL Server and relevant ORMs, such as Entity Framework, including data modelling and query performance considerations.
• Experience using Source Control tools (e.g. Git and related workflows) to manage code changes collaboratively and responsibly.
• Ability to translate business requirement and stakeholder feedback into well-designed, functional software solutions.

Desirable

• Background in the financial industry, with an understanding of regulatory, security and compliance considerations.
• Experience working with Microsoft Azure services, including cloud-based application hosting, deployment, and supporting infrastructure.

Attributes

• Strong technical capability paired with genuine passion for coding and continuous improvement.
• Ability to articulate technical concepts effectively within a team and to clients, translating complexity into practical understanding.
• Collaborate effectively with other Developers through Pair Programming and shared problem-solving, thriving in a remote working environment that relies on video calls and clear communication.
• Remain calm and focused under pressure, approaching challenges with a steady and solution-oriented mindset.
• Apply strong analytical thinking and close attention to detail to diagnose issues, evaluate options and deliver reliable outcomes.
• Demonstrate curiosity and a willingness to learn new technologies, tools, and approaches as the technical landscape evolves.
• Operate as a disciplined self-starter, able to work autonomously with minimal supervision while staying accountable in a flexible work environment.