INFINITY FIRE & SECURITY LTD
Fire Alarm Engineers -Commissioning/Servicing/Fault finding

How your CV stacks up
Upload your CV to see how well it fits this job role
?%
🔥 Fire Alarm Engineer – Commissioning, Service & Fault Finding
📍 London & surrounding areas
💷 £35,000–£48,000 per year, depending on experience
🚆 Travelcard provided for engineers who do not drive
🎂 28 days' holiday including bank holidays + an additional day off for your birthday
💰 Performance bonus + additional incentives for exceptional achievement
🛂 Right to Work sponsorship may be available for the right candidate
Infinity is looking for an experienced Fire Alarm Engineers to join our growing team.
We are looking for an engineer with strong technical knowledge who is confident working independently on fire alarm systems across London.
This is not purely a routine servicing position. A key part of the role will be commissioning, fault-finding and resolving technical issues, so we're looking for someone who understands fire alarm systems properly and can approach faults logically and methodically.
Installation experience would be a significant advantage.
What you'll be doing
- Commissioning fire detection and alarm systems in accordance with BS 5839-1 and project requirements
- Carrying out servicing, preventative maintenance and system inspections
- Diagnosing and rectifying faults on a range of conventional and addressable fire alarm systems
- Completing modifications, small works and system upgrades
- Carrying out installation work where required
- Testing systems and identifying non-compliances or defects
- Completing accurate service, commissioning and fault reports
- Liaising professionally with customers, site teams and other contractors
- Working independently and managing your workload effectively
- Participating in our engineer call-out rota, normally at least once per month
- Maintaining a high standard of workmanship and representing Infinity professionally on every site
Reasons to use Rodeo
I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?
Honest answer — it depends on where you want to end up. A lot of top grad schemes (Big 4, civil service, banking) don’t need a masters. Let’s look at the ones you’d be competitive for now, and we can decide if a masters actually adds anything.
Also worth knowing: most autumn 2026 applications are open now. Timing matters more than you think.
Start with a chat, not a search bar
Grad scheme, placement, apprenticeship? Not sure what you want yet — that's fine. Your agent talks it through with you and turns "I have no idea" into a shortlist.
Graduate Consultant — 2026 Scheme
Why you're a good match
StrongYour economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.
See breakdownIt searches the market for you
Every day your agent scans the market matching roles against what actually matters to you, not just keywords on a CV.
Why you're a good match
You’ve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon — deadlines close within the month.
Experience fit
Your summer at the bank plus your econometrics coursework map directly to the day-one responsibilities on this scheme — client modelling, market briefings, and deal support.
Only hits
No noise. No "maybe this fits." Just roles with a clear explanation of why they're right — and where to focus when applying.
What we're looking for
Essential:
- Strong working knowledge of BS 5839-1
- Approximately 3–5 years' experience working with fire detection and alarm systems
- Proven experience in fire alarm commissioning
- Strong fault-finding and diagnostic ability
- Experience servicing and maintaining fire alarm systems
- Ability to work independently and make sound technical decisions on site
- Good organisational and communication skills
- Ability to produce clear and accurate documentation
- Must live in or around London and be able to travel to sites across the London area
- Willingness to participate in the call-out rota
Desirable:
- Fire alarm installation experience
- FIA training/qualifications
- ECS/CSCS or relevant industry competency card
- IPAF
- Experience across multiple manufacturers and fire alarm platforms
- Full UK driving licence


Get help with your application
Your very own career expert that helps elevate your application to the next level.
What does success look like at Infinity?
You'll be the engineer customers and colleagues can rely on when a system needs more than a basic service visit.
You'll be able to arrive on site, understand the system, identify faults, commission work correctly, explain technical issues clearly and leave the system and documentation to a professional standard.
We're particularly interested in engineers who take pride in understanding why something isn't working rather than simply replacing components until the fault disappears.
What we offer
- £35,000–£48,000 salary, depending on experience and technical capability
- 28 days' holiday, including bank holidays
- An additional day's holiday on your birthday 🎂
- Travelcard for non-driving engineers
- Performance-related bonus
- Additional incentives for special achievements and exceptional performance
- Ongoing opportunities to develop your technical skills and experience
- Supportive and professional working environment
- Right to Work sponsorship can be considered for the right candidate
If you're an experienced Fire Alarm Engineer who is confident with commissioning, servicing and fault-finding and has a strong understanding of BS 5839-1, we'd like to hear from you.
“It took my CV and asked me questions relevant to understanding what kind of jobs to suggest for me. Suggestions were almost perfect. Jobs were exactly what I’ve been looking for.”
Jessica, London
Location