4Square Recruitment Ltd
Application Support Engineer
London Hybrid
We are working with a fast-growing technology business looking for a Technical Application Support Engineer to support complex software deployments within live customer environments.
This is an excellent opportunity for someone who enjoys investigating technical problems, working with live systems, and supporting software that has a real-world operational impact.
This is not a traditional helpdesk or ticket-routing role. You will be responsible for the technical health of active customer deployments, proactively monitoring live systems, investigating anomalies, resolving technical issues, and helping ensure deployments continue to deliver measurable value.
The role would suit someone who enjoys working across software, data, integrations, telemetry and customer-facing technical support.
The Role
You will work closely with Customer Success, Engineering and Data teams to monitor active deployments, identify issues before they impact customers, and provide clear technical insight into system performance.
Responsibilities will include:
- Monitoring live customer deployments, including uptime, system behaviour, performance and SLA compliance
- Investigating anomalies using logs, metrics, telemetry and operational data
- Diagnosing issues across data ingestion, integrations, connectivity, software deployments and system outputs
- Acting as a technical point of contact for deployment-related issues
- Resolving issues where possible or escalating to technical teams with clear diagnostic evidence
- Producing concise technical summaries for internal teams and customers
- Supporting customer reporting, monthly reviews and service reviews
- Carrying out root cause analysis on incidents and recurring issues
- Creating and maintaining runbooks, diagnostic guides and knowledge base documentation
- Identifying opportunities to improve reliability, monitoring and support processes
Experience Required
The successful candidate will ideally have:
- 2–5 years’ experience in application support, technical support, software support, operations or engineering support
- Experience supporting software deployed into customer or operational environments
- Strong troubleshooting skills across interconnected systems
- Experience analysing logs, metrics, telemetry or time-series data
- Familiarity with SQL, JSON, Python, Excel or similar tools
- Strong written communication skills and confidence dealing with customers
- Ability to work autonomously and know when to escalate issues
- Familiarity with tools such as Jira, Confluence and Microsoft Teams
Useful Background
Any exposure to the following would be beneficial:
- Application support or software support within complex customer environments
- Implementation support, deployment support or technical operations
- Monitoring, observability, telemetry or infrastructure tooling
- Linux, Docker, cloud infrastructure or scripting
- IoT, operational systems, data platforms or analytics-led software
To apply for this job please visit www.reed.co.uk.
Make this application stronger
Use these quick checks before applying so your CV, interview preparation and job search are better matched to this vacancy.
Before you apply
Check the key details and make sure the role matches what you are looking for.
- Review the job title, company, location, salary and working pattern if provided.
- Check the skills, experience or qualifications requested by the employer.
- Make sure the commute, hours and contract type are realistic for you.
Tailor your CV
For IT Jobs, highlight the most relevant skills, experience and achievements linked to this type of work. Keep it honest, clear and focused on what the employer is asking for.
Use the CV Builder or browse Career Advice.
Prepare for interview
If your application is successful, prepare simple examples that show your motivation, strengths and suitability.
Keep searching smarter
Do not rely on one application. Keep searching similar roles and set up alerts so new vacancies reach you faster.