54 Back end developer Jobs and Work

Senior .NET Software Engineer
iOCO —Cape Town, Western Cape
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Senior Quality Engineer (PayJustNow)
Weaver Fintech Ltd —Cape Town, Western Cape
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Lead, Technology, Calypso (Back Office) (Global Markets Technology)
Standard Bank —Johannesburg, Gauteng
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Senior .NET Software Engineer

iOCO -
Cape Town, Western Cape

Apply Now

Job Details

7 days ago

Full Job Description

We are seeking a highly experienced Senior Software Engineer with 10+ years of professional software development experience to lead the design, development, and evolution of a back-end system.

You will architect and maintain scalable .NET Core and .NET Framework services, design high-performance SQL Server solutions, and contribute to ETL pipelines and reporting processes. You will play a key role in defining back-end standards, ensuring system reliability, and guiding the technical direction of the platform.

While this role is primarily backend-focused, you will collaborate closely with front-end engineers building Vue.js applications and will be encouraged to expand your influence across the application stack over time. The role offers a clear pathway to broader full-stack ownership, contributing to end-to-end solution design and frontend–backend alignment as part of your continued growth.

This position requires strong architectural judgment, production-grade system design expertise, and the ability to mentor engineers while upholding technical standards and long-term maintainability.

The ideal candidate is a strategic technical leader who remains hands-on while shaping system reliability, scalability, and engineering best practices.

What you'll do:

Architect, design, and implement scalable backend services using .NET (C#)
Lead system design decisions, ensuring scalability, reliability, and maintainability
Optimise and maintain SQL Server databases and data access layers
Guide integration design between back-end services and front-end Vue.js applications
Drive improvements in code quality, testing standards, and DevOps practices
Lead and participate in code reviews and architectural discussions
Mentor intermediate and junior engineers
Proactively identify technical risks and propose mitigation strategies
Collaborate across distributed teams and influence technical direction
Communicate progress, risks, and dependencies proactively

Your Expertise:

Minimum 10+ years of professional software development experience
Deep expertise in .NET Core / C# and building scalable, production-grade RESTful Web APIs
Strong experience designing and maintaining distributed and enterprise-grade systems
Advanced knowledge of Microsoft SQL Server, including schema design, indexing strategy, performance tuning, and query optimisation
Experience implementing and optimising CI/CD pipelines (Azure DevOps or similar)
Strong understanding of clean architecture, SOLID principles, and design patterns
Demonstrated experience mentoring engineers and conducting technical reviews
Excellent communication skills, with the ability to articulate architectural decisions, trade-offs, and technical strategy to both technical and non-technical stakeholders
Demonstrated experience leading backend initiatives and delivering complex systems end-to-end across the full stack

Education & Qualifications:

Bachelor's degree in computer science, Software Engineering or related field, or equivalent practical experience

Nice to Have:

Strong exposure to Vue.js or other modern front-end frameworks
Experience designing ETL workflows and data integration pipelines
Exposure to cloud-native architecture or modernisation initiatives
Experience with performance profiling and application monitoring
Experience working in financial or investment domain

Other information applicable to the opportunity:

Contract Duration: 12 months
Location: Cape Town (Hybrid)

Why work for us?

Want to work for an organization that solves complex real-world problems with innovative software solutions? At iOCO, we believe anything is possible with modern technology, software, and development expertise. We are continuously pushing the boundaries of innovative solutions across multiple industries using an array of technologies.?

You will be part of a consultancy, working with some of the most knowledgeable minds in the industry on interesting solutions across different business domains.?

Our culture of continuous learning will ensure that you will have all the opportunities, tools, and support to hone and grow your craft.?

By joining IOCO you will have an open invitation to developer inspiring forums. A place where you will be able to connect and learn from and with your peers by sharing ideas, experiences, practices, and solutions.?

iOCO is an equal opportunity employer with an obligation to achieve its own unique EE objectives in the context of Employment Equity targets. Therefore, our employment strategy gives primary preference to previously disadvantaged individuals or groups.

Apply Now

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