Mid -Level Backend & Full -Stack Engineer

RecruitMyMom; Johannesburg; On-site; ZAR 600 000 - 800 000; Full time

Job summary

A leading energy technology company in Johannesburg is looking for a full-time, Mid-Level Backend & Full-Stack Engineer – IoT & Energy Systems. Candidates should have a degree in Business Mathematics and Informatics, strong Python skills, and at least 3 years of experience in backend or full-stack engineering. This role focuses on managing large-scale IoT systems and improving energy solutions across South Africa, providing opportunities for professional growth and innovation.

Benefits

Impact & Innovation

Professional Growth

High Autonomy

Collaborative Team

Permanent Role

Qualifications

• Degree in Business Mathematics and Informatics essential.
• At least 3 years of experience in backend or full-stack engineering.
• Strong skills in Python, including async frameworks.
• Experience with Linux administration.
• Knowledge of MQTT and IoT device communication.
• Expertise in Docker and containerisation.

Responsibilities

• Maintain and extend Python-based microservices for energy orchestration.
• Develop and deploy backend services on Linux using Docker.
• Optimise IoT device communication pipelines using MQTT.
• Manage OTA updates and fleet orchestration for IoT devices.
• Troubleshoot backend and infrastructure issues.

Skills

Python

Backend Engineering

IoT Knowledge

Debugging Skills

Analytical Problem-Solving

Containerisation (Docker)

Linux Administration

Git/GitHub

Education

Degree in Business Mathematics and Informatics

Tools

Docker

MQTT

Job description

Full -time, Mid -Level Backend & Full -Stack Engineer – IoT & Energy Systems

We are seeking a full -time, Mid -Level Backend & Full -Stack Engineer – IoT & Energy Systems to join a leading energy technology company in Rosebank, Johannesburg. This is a high-impact, operational role ideal for candidates with a degree in Business Mathematics and Informatics, strong backend engineering skills, Python expertise, and a passion for IoT, energy systems, and automation.

You’ll be working on real-world projects that power thousands of homes and businesses across South Africa. This role is not desk-bound: you’ll manage large-scale IoT fleets, troubleshoot complex device and server issues, and collaborate with cross-functional teams to scale energy solutions nationally.

Key Responsibilities

• Maintain and extend Python-based microservices for energy orchestration, load management, and scheduling.
• Develop and deploy containerised backend services on Linux VPS servers using Docker and CI/CD workflows.
• Optimise IoT device communication pipelines using MQTT, ensuring reliability and scalability.
• Build and maintain APIs for internal dashboards, CRMs, and automation tools.
• Manage OTA updates and fleet orchestration for thousands of IoT devices.
• Support internal full-stack tools (Flask/FastAPI/React) and lightweight front-end work.
• Troubleshoot backend, device, and infrastructure issues in a live production environment.
• Collaborate with operations, field teams, and leadership to deliver product and process improvements.
• Contribute to workflow optimisation, automation, and continuous improvement initiatives across backend systems.

Requirements

Essential:

• Degree in Business Mathematics and Informatics essential (non-negotiable).
• 3 years’ minimum experience in backend or full-stack engineering.
• Strong Python skills, including async frameworks and microservices.
• Linux administration experience.
• Docker and containerisation expertise.
• MQTT and IoT device communication knowledge.
• Git/GitHub & CI/CD workflows.
• Strong debugging and analytical problem-solving skills.
• Independent, high-autonomy work style.
• Clear communicator across technical and non-technical teams.
• Analytical and solution-focused mindset.
• Passion for IoT, energy systems, and automation.

Desirable:

• Experience with ESP32/ESP8266 or embedded systems.
• Networking fundamentals (LAN/WAN, NAT, static IPs).
• Large-scale IoT or distributed systems experience.
• Interest or experience in renewable energy / solar systems.
• Lightweight full-stack experience (internal tools, dashboards).

Benefits

• Impact & Innovation: Work on IoT systems and energy solutions that power thousands of households nationwide.
• Professional Growth: Gain experience in large-scale backend systems, IoT orchestration, and renewable energy technology.
• High Autonomy: Take ownership of backend services, device orchestration, and process improvement.
• Collaborative Team: Join a skilled, supportive, and innovative technical team.
• Permanent Role: Stability and career development within a rapidly growing, forward-thinking energy company.