C# .NET Developer (UK Offshore - Private Client Tech - Account Service Platform) at Investec

Description

• Investec Sandton is looking for an experienced .NET / C# Engineer with a passion for designing and building scalable, resilient, high‑performance solutions using modern technologies. The ideal candidate will have strong cloud experience and be comfortable leading or mentoring engineers within the team.
• You will be part of a cross‑functional delivery team consisting of a Product Owner, Software Engineers, Delivery Manager, and QA Engineers, responsible for building and evolving our Transactional Banking Platform. This role offers the opportunity to work across a broad range of initiatives—from enhancing existing capabilities to developing new applications that push the boundaries of modern banking technology.
• You will be involved in the design, development, implementation, maintenance, and support of solutions operating across on‑prem and cloud environments. This is a hands‑on role where you can apply strong problem‑solving skills, contribute to architectural decisions, and make a meaningful impact on a next‑generation banking platform.
• If you are a passionate problem solver with a strong “you build it, you run it” mindset, driven by innovation and able to thrive in a fast‑paced, dynamic environment, this is an exciting opportunity to help build a brand‑new Transactional Banking Platform for private and corporate clients.

Key Responsibilities

As an experienced .NET Engineer, you will:

• Design, build, and maintain scalable microservices, integrating with internal and external systems
• Act as a technical mentor and informal leader within the engineering team (no direct reports)
• Contribute to architectural discussions and guide technical direction within the team
• Work in an agile engineering environment using source control and CI/CD pipelines
• Write clean, testable, and performance‑oriented code
• Test, troubleshoot, debug, enhance, and upgrade software solutions
• Promote a “you build it, you run it” mindset across development and support

Qualifications, Experience and Skills

• 5–8 years of professional experience developing in C# and .NET

Must have strong proficiency in:

• .NET / C# Core
• Relational and NoSQL databases
• DevOps practices (Azure DevOps preferred)
• Automated testing (unit, integration, or API testing)
• RESTful API design principles
• Cloud platforms (Azure preferred)

Nice‑to‑Have Skills:
Ideally, you will also have experience with:

• Frontend technologies (React, TypeScript)
• Event‑driven architecture
• Containerisation (e.g. Docker, Kubernetes)
• API Management and API gateways