Lead Full Stack Systems Developer

Penguin Recruitment; Hemel Hempstead; On-site; GBP 75,000 - 85,000; Full time

Job summary

A leading environmental technology firm in Hemel Hempstead is seeking a Senior Full Stack Systems Developer to lead end-to-end development of cloud-based products. This role involves mentoring a talented team and ensuring systems are scalable and secure. Candidates should have expertise in Java enterprise middleware and experience with Docker and REST APIs. The role offers a salary of £75,000–£85,000 plus benefits, including private healthcare and a pension scheme.

Benefits

Private healthcare

Strong pension scheme

Generous holiday allowance

Electric vehicle salary sacrifice programme

Performance-related bonus

Qualifications

• Managing full software lifecycles across complex enterprise systems.
• Designing, developing, testing and deploying software solutions.
• Strong understanding of security, databases, networking and HCI.
• Proven ability to mentor or lead technical teams.

Responsibilities

• Take ownership of end-to-end development for advanced cloud-based products.
• Guide the full software lifecycle—from architecture and design to deployment.
• Mentor developers and influence technical direction.
• Partner with cross-functional teams to deliver cutting-edge enterprise solutions.

Skills

Java enterprise middleware

Docker

REST APIs

MQTT

Deep learning frameworks

Job description

Senior Full Stack Systems Developer

Hemel Hempstead

£75,000 - £85,000 per annum

Job Overview

Join a pioneering organisation at the forefront of environmental technology. For over ten years, this company has been transforming how the UK monitors and understands environmental change, building integrated, data‑driven ecosystems that deliver real‑time insights. As they continue to expand, they're looking for a Lead Full Stack Systems Developer to lead a talented technical team and play a key role in shaping the next generation of intelligent digital platforms.

Salary & Benefits

Salary: £75,000-£85,000 plus performance‑related bonus, with clear scope for growth.

Benefits: Private healthcare, strong pension scheme, generous holiday allowance, and an electric vehicle salary sacrifice programme.

Culture

A forward‑thinking, collaborative environment that values innovation, impact, and professional development.

Role Description

As a Senior Full Stack Systems Developer, you will take ownership of end‑to‑end development for advanced cloud‑based products. You will guide the full software lifecycle—from architecture and design to deployment—ensuring systems are scalable, secure and high‑performing. The position involves mentoring developers, influencing technical direction, and partnering with cross‑functional teams to deliver cutting‑edge enterprise solutions.

Responsibilities

• Take ownership of end‑to‑end development for advanced cloud‑based products.
• Guide the full software lifecycle—from architecture and design to deployment—to ensure systems are scalable, secure and high‑performing.
• Mentor developers and influence technical direction.
• Partner with cross‑functional teams to deliver cutting‑edge enterprise solutions.

Qualifications

• Managing full software lifecycles across complex enterprise systems.
• Java enterprise middleware (essential).
• Designing, developing, testing and deploying software solutions.
• Strong understanding of security, databases, networking and HCI.
• Experience with Docker, REST APIs, MQTT and deep learning frameworks.
• Prior exposure to environmental monitoring systems – advantageous.
• Proven ability to mentor or lead technical teams.

Application

This is a permanent role. If you are interested in this position, please contact Beth Young. We have many more vacancies available on our website.

Penguin Recruitment is operating as a Recruitment Agency in respect to this position.