Senior Full Stack Systems Developer

Senior Full Stack Systems DeveloperLocation: Hertfordshire (Remote/Hybrid)Salary: £80,000 - £85,000 + Bonus + Benefits

Reference: 128941

Our client is a leading innovator in environmental technology, with a decade-long track record building an end-to-end monitoring ecosystem across the UK and Ireland - now expanding into Europe. Their cutting-edge tools help governments and utilities monitor environmental data in real-time. Due to continued growth, they're seeking a Senior or Lead Full Stack Developer to help shape the next generation of their digital systems and services.

Key Responsibilities of the Senior Full Stack Systems Developer

• Lead full-stack development across cloud-based software products
• Manage the full software lifecycle - from architecture to deployment
• Ensure performance, reliability, and security of enterprise systems
• Mentor junior developers and support technical strategy
• Collaborate with internal teams to deliver scalable solutions

Skills & Experience required for the Senior Full Stack Systems Developer

• Strong background in full software lifecycle and enterprise systems
• Expertise in system design, development, testing, and deployment
• Deep understanding of security, databases, networking, and HCI
• Java enterprise middleware experience is essential
• Docker, REST APIs, MQTT
• Deep learning frameworks
• Leadership or mentoring experience
• Familiarity with Linux enterprise platforms

An interest in environmental sustainability is a bonus.

This Senior Full Stack Systems Developer role is offering:

• A competitive salary (£80,000 - £85,000 salary + profit/performance bonus)
• Generous annual leave and pension scheme

• Private medical cover
• Electric vehicle salary sacrifice scheme
• Collaborative, mission-led culture focused on innovation and impact

If you are interested in this or other roles in Software Development, please do not hesitate to contact Beth Young on or call . We have many more vacancies available on our website. Please refer to . This is a permanent role. Penguin Recruitment is operating as a Recruitment Agency in respect to this position.