Senior Full Stack Systems Developer

Penguin Recruitment Ltd; Watford; Hybrid; GBP 75,000 - 85,000; Full time

Job summary

A leading recruitment agency seeks a Senior Full Stack Systems Engineer in Watford. This role involves overseeing full-stack development across innovative cloud-based services and shaping system architecture while mentoring other engineers. Candidates should have significant experience in large-scale software systems and a solid background in Java middleware, along with skills in Docker and other technologies. The position offers a competitive salary and a hybrid working environment.

Benefits

Competitive pension

Excellent annual leave

Access to EV salary-sacrifice scheme

Qualifications

• Experience with environmental data or monitoring technologies is a plus.
• Strong engineering expertise and leadership ability.
• Full right to work in the UK is essential.

Responsibilities

• Oversee full-stack development across cloud-based services.
• Shape system architecture and manage deployment processes.
• Coach engineers and drive technical strategy.

Skills

End-to-end experience with large-scale software systems

Java enterprise middleware

Design, development, testing, and deployment proficiency

Knowledge of security, databases, networking, and user interaction

Familiarity with Docker

Experience with RESTful services

Familiarity with MQTT

Experience with deep learning libraries

Guiding or managing technical teams

Tools

Docker

Job description

Senior Full Stack Systems Engineer

Reference: 128941
Watford (Hybrid)
£75,000 – £85,000

Step into a forward-looking organisation pushing the boundaries of environmental innovation. For more than a decade, this team has been redefining how the UK tracks and interprets environmental shifts, creating integrated, data-rich platforms that deliver instant, actionable intelligence. As the company continues to scale, they’re searching for a Senior Full Stack Systems Engineer to guide a skilled development group and help craft the next wave of intelligent digital solutions.

What this Senior Full Stack Systems Engineer role:

Package: £75,000-£85,000 plus a performance bonus, with room to progress
Perks: Competitive pension, excellent annual leave, and access to an EV salary-sacrifice scheme
Environment: Innovative, collaborative, and committed to meaningful impact and continuous learning

The Senior Full Stack Systems Engineer opportunity:

In this senior role, you’ll oversee full-stack development across sophisticated cloud-based services. You’ll shape system architecture, steer design decisions, and manage deployment processes, ensuring robust, secure, and scalable products. You’ll also coach other engineers, help drive technical strategy, and work closely with multidisciplinary teams to deliver enterprise-grade solutions.

What we’re looking for:

A blend of strong engineering expertise and leadership ability, including:

• End-to-end experience with large-scale software systems

• Solid background in Java enterprise middleware (a must)

• Proficiency across design, development, testing, and deployment

• Broad knowledge of security, databases, networking, and user interaction

• Familiarity with tools and technologies such as Docker, RESTful services, MQTT, and deep learning libraries

• Experience with environmental data or monitoring technologies (a plus)

• A track record of guiding or managing technical teams

• Commutable to Watford
• Full right to work in the UK

If you are interested in the role of Senior Full Stack Systems Developer, please do not hesitate to contact Penguin Recruitment. Please also see our website for a range of other roles currently available. This is a permanent role. Penguin Recruitment is operating as a recruitment agency in respect to this vacancy.