Senior Application Engineer

Sedna Inc.; Cape Town; On-site; ZAR 600 000 - 800 000; Full time

Job summary

A technology company is seeking a skilled developer in Cape Town to lead the design and development of applications using C# and .NET. The ideal candidate will have expertise in C++, experience with Web APIs, and a strong grounding in cybersecurity. This full-time role offers competitive salary and opportunities for advancement in an inclusive environment.

Benefits

Competitive salary

Comprehensive benefits

Flexible work arrangements

Opportunities for career advancement

Qualifications

• 5+ years of professional experience in software development, at least 2 in a senior or lead role.
• Expertise in Agile/Scrum methodologies and DevSecOps practices.
• Strong communication skills for collaboration with technical and non-technical stakeholders.

Responsibilities

• Architect and develop applications using C# and .NET for scalability.
• Lead the implementation of performance-critical components using C++.
• Design and optimize Web APIs for integration across services.

Skills

C#

.NET

C++

Web APIs

AMQP

PostgreSQL

OAuth

3D systems

Cybersecurity

MATLAB

Kubernetes

Leadership

Problem-solving

Education

Bachelor's or Master's degree in Computer Science, Engineering or related field

Tools

Kubernetes

Docker

Job description

Key Responsibilities

• Architect and develop advanced applications using C# and .NET for scalability and performance.
• Lead the implementation of performance‑critical components using C++.
• Design and optimize Web APIs to ensure seamless integration and interoperability across services.
• Implement and manage AMQP‑based messaging systems (e.g., RabbitMQ) for reliable, distributed data exchange.
• Design and optimize complex PostgreSQL database schemas, queries, and performance tuning.
• Implement secure authentication and authorization frameworks using OAuth and related protocols.
• Lead development efforts for 3D systems, including visualization, rendering, or processing pipelines.
• Champion cybersecurity best practices, including secure coding, threat modeling, and vulnerability mitigation.
• Leverage MATLAB for advanced tasks such as pose estimation or signal‑processing applications.
• Mentor junior engineers, conduct code reviews, and ensure adherence to high‑quality coding standards.
• Collaborate with stakeholders to define technical requirements, troubleshoot issues, and drive project delivery.
• Stay updated on emerging technologies and propose innovative solutions to enhance Sedna.net's platform.

Required Skills

• Expert‑level proficiency in C# and .
• NET for building and scaling enterprise‑grade applications.
• Advanced experience with C++ for developing high‑performance, low‑latency components.
• Proven expertise in designing, implementing, and optimizing Web APIs using RESTful or GraphQL principles.
• Extensive experience with AMQP protocols for messaging systems in distributed architectures.
• Deep knowledge of PostgreSQL, including advanced query optimization, indexing, and schema design.
• Strong expertise in OAuth and related authentication/ for secure system design.
• Significant experience with 3D systems, such as 3D rendering, visualization, or simulation frameworks.
• In‑depth knowledge of cybersecurity, including secure SDLC, encryption, and threat mitigation strategies.
• Proficiency in MATLAB for pose estimation or other advanced signal‑processing applications.
• Experience with Kubernetes and implementation of monitoring and integrated health control.
• Strong leadership and mentorship skills with a track record of guiding technical teams.
• Excellent problem‑solving abilities and experience in delivering complex projects in fast‑paced environments.

Preferred Qualifications

• Bachelor's or Master's degree in Computer Science, Engineering or a related field (or equivalent experience).
• 5+ years of professional experience in software development, with at least 2 years in a senior or lead role.
• Expertise in Waterfall, Agile / Scrum methodologies and DevSecOps practices.
• Experience with cloud platforms (e.g., AWS, Azure, GCP) and containerization (e.g., Docker, Kubernetes).
• Familiarity with 3D frameworks or tools (e.g., OpenGL, Unity, Unreal Engine).
• Strong communication skills and the ability to collaborate with technical and non‑technical stakeholders.

Why Join Sedna.net?

• Lead impactful projects at the forefront of technology innovation.
• Work in a collaborative, inclusive, and dynamic environment that values technical excellence.
• Opportunities for career advancement, leadership, and continuous learning.
• Competitive salary, comprehensive benefits, and flexible work arrangements.

Location : Cape Town, South Africa

Employment Type : Full‑Time

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