Latest Jobs at Koolboks

About the Role

• We are looking for an IoT Engineer to design, develop, and maintain Internet of Things (IoT) solutions that connect devices, sensors, and systems. You’ll work across hardware, firmware, cloud platforms, and data pipelines to build secure, scalable, and reliable IoT products.

Key Responsibilities

• Design and develop end-to-end IoT solutions (device → gateway → cloud → application)
• Develop and maintain firmware for IoT devices (MCUs, sensors, actuators)
• Integrate devices with cloud platforms (AWS IoT, Azure IoT Hub, Google Cloud IoT, etc.)
• Implement communication protocols such as MQTT, HTTP/HTTPS, CoAP, BLE, Zigbee, or LoRaWAN
• Ensure device security, authentication, encryption, and OTA updates
• Collect, process, and analyze device data for monitoring and insights
• Troubleshoot hardware, firmware, and network issues
• Collaborate with hardware, software, and data teams to deliver solutions
• Create technical documentation and system diagrams

Required Skills & Qualifications

• Bachelor’s degree in Computer Science, Electronics, Electrical Engineering, or related field
• Experience with embedded systems and microcontrollers (ESP32, STM32, Arduino, Raspberry Pi, etc.)
• Strong programming skills in C/C++, Python, or Java
• Hands-on experience with IoT communication protocols (MQTT, HTTP, BLE, etc.)
• Experience with cloud services and REST APIs
• Understanding of networking concepts (TCP/IP, Wi-Fi, cellular, LPWAN)
• Familiarity with Linux-based systems
• Knowledge of security best practices for IoT systems

Preferred / Nice-to-Have Skills

• Experience with real-time operating systems (FreeRTOS, Zephyr)
• Knowledge of data analytics, dashboards, or visualization tools
• Experience with DevOps, CI/CD, or containerization (Docker)
• Exposure to edge computing and AI/ML at the edge
• Industry experience (smart home, industrial IoT, healthcare, automotive, etc.)

go to method of application »

Role Description

• We are seeking a motivated Telesales Executive for a full-time, on-site role based in Lagos. The Telesales Executive will engage with potential clients via phone calls to promote products and services, develop and maintain relationships, and convert leads into customers. Responsibilities include lead generation, providing excellent customer support, following up on inquiries, and achieving sales targets.

Qualifications

• Strong Communication and Customer Service skills to effectively interact with clients and address their needs
• Experience in Lead Generation and Sales, with the ability to drive new business opportunities
• Proficiency in Customer Support, ensuring a positive customer experience throughout the sales process
• Results-driven mindset with a focus on achieving and exceeding sales targets
• Proven ability to work effectively in a team-oriented and fast-paced environment
• Prior experience in the refrigeration, energy, or related industry is an added advantage
• Bachelor’s degree in any field, or equivalent work experience in sales or related areas