Senior Software Developer (AWS, TypeScript, JavaScript, Node.js) – Johannesburg / Cape Town (Hybrid) at Datafin Recruitment

ENVIRONMENT:

• A global leader in safety and industrial technology is driving the next generation of cloud-based IoT solutions, connecting industrial systems, sensors, and devices into scalable, real-time platforms.
• Their South African engineering team collaborates with international teams across Europe and the USA to deliver high-impact, production-grade systems.
• This is a senior-level role within a modern, Agile, product-driven environment, suited to a Software Developer who enjoys owning architecture, mentoring others, and solving complex technical challenges at scale.

DUTIES:

• Design, build and maintain scalable cloud-native applications and microservices
• Lead development of AWS-based services, APIs, and data pipelines
• Drive architectural decisions across backend systems and integrations
• Build and optimise systems that support IoT device connectivity and data flows
• Collaborate with Product, QA, and Hardware teams on solution design and delivery
• Conduct code reviews and mentor junior developers
• Ensure system reliability, performance, observability, and security
• Contribute to CI/CD pipelines, automation, and engineering best practices
• Continuously improve system design, tooling, and development processes

REQUIREMENTS:

Qualifications & Experience:

• Bachelor’s degree in Computer Science, Engineering or related field
• 5+ years’ software development experience
• Strong JavaScript / TypeScript and Node.js expertise
• Proven experience building and scaling cloud solutions (AWS preferred)
• Strong understanding of distributed systems, APIs, and system design
• Solid SQL experience (PostgreSQL preferred)
• Experience working in Linux-based environments

Advantageous:

• Experience with Docker, Terraform, Ansible and CI/CD pipelines
• Exposure to IoT systems, device integration or industrial protocols (MQTT, Modbus, BACnet)
• Frontend experience (Angular or similar frameworks)
• Experience with C / C++ or low-level integrations
• Knowledge of observability, monitoring and performance tuning

ATTRIBUTES:

• Strong architectural thinking and problem-solving ability
• Ability to take ownership of systems and drive technical direction
• Mentorship mindset with strong collaboration skills
• Adaptable and comfortable in a fast-paced, global environment
• High attention to detail and commitment to quality