Junior Developer jobs in United Kingdom

Location: Southampton

On Target Earnings: £58,000 – This figure represents the average potential earnings, including overtime, call‑outs, travel pay and bonus payments

Trinity Fire & Security Systems are seeking an experienced Service Engineer to deliver high-quality maintenance and support across our client portfolio, ensuring system integrity and compliance.

You’ll carry out scheduled servicing, maintenance, and minor remedial work, ensuring all systems perform effectively and meet regulatory and company standards. Working as part of a skilled regional team, you’ll be supported by dedicated service administrators and technical specialists.

• Regional work – enjoy a better work‑life balance.
• Uncapped commission & enhanced overtime – your effort truly pays off.
• Ongoing training with leading brands like Gent, Notifier, Protec, and Baldwin Boxall.
• Career progression – we invest in our engineers for the long term.

• Deliver planned maintenance and reactive service calls to Fire and Security systems.
• Communicate effectively with customers, providing updates and technical insights.
• Identify and carry out remedial works and small installations in line with service guidance.
• Maintain accurate records of service and performance.

• Fire: Gent, Notifier, Advanced, Protec, and other open protocol systems
• CCTV: HikVision, Avigilon, Dahua
• Intruder: Galaxy, Texecom
• Access Control: Paxton, Honeywell, Gallagher

• Experience servicing and maintaining fire, security, and CCTV systems to relevant British Standards.
• Strong diagnostic and problem‑solving abilities.
• Excellent communication and customer service skills.
• Basic electrical safety training (ECA) and sound technical understanding of building services.

• Competitive base salary with uncapped commission and paid overtime.
• 23 days’ holiday, increasing with service, plus bank holidays.
• Company vehicle and fuel card.
• Employee Discount Programme – savings across 800+ retailers.
• Pension via Royal London, Life Assurance, and Employee Assistance Programme.
• Referral bonus of up to £2,000.
• Ongoing training and career development opportunities.

We are committed to equality of opportunity for all staff and applications from individuals are encouraged regardless of age, disability, sex, gender reassignment, sexual orientation, pregnancy and maternity, race, religion or belief and marriage and civil partnerships.

It is an industry requirement that successful candidates undergo security vetting. Offers of employment are subject to satisfactory vetting and may be withdrawn if the required standards are not met.