Senior Application Support Engineer

Ocean Infinity; Southampton; On-site; GBP 50,000 - 61,000; Full time

Job summary

Ocean Infinity, based in the United Kingdom, is seeking a Senior Application Engineer to support internal software in live production. You will work in a fast-growing marine tech environment, bridging development and operations, and contribute to reliability and incident resolution.

You will mentor junior team members, handle 2nd/3rd line escalations, and participate in 24x7 on-call support, while leveraging Linux, Docker, and modern web tech to keep systems running smoothly.

Qualifications

• 2nd/3rd line engineering experience with coaching and mentoring juniors.
• Experience supporting internal software in production environments and supporting development teams as developer, senior QA engineer, or DevOps.
• Proficiency with Linux-based environments, Docker, containerised applications, and shell scripting (PowerShell/Bash).
• Experience with JavaScript, TypeScript, React; Python and/or C#.
• Familiarity with observability tools (Prometheus, Grafana, Kibana) to diagnose issues.
• Experience with ticketing systems (ServiceNow, Zendesk, ServiceDesk Plus).
• A can-do attitude and willingness to tackle out-of-scope tasks.
• Excellent time management and prioritisation in fast-paced environments.
• Strong verbal and written communication, translating requirements and presenting findings.
• Interest in others and team-oriented.

Responsibilities

• Provide up to 3rd line support resolving incidents with internal software.
• Offer structured feedback to development teams and drive improvements.
• Mentor generalist IT team members and contribute to reliability initiatives.
• Coordinate between development and support during frequent software releases.
• Manage tickets to meet response and resolution SLAs.
• Handle high-priority tickets from inception to resolution and incident management.
• Participate in 24x7 on-call support.

Skills

2nd/3rd Line Engineering

Mentoring juniors

Problem solving

Time management

Verbal/written communication

Team collaboration

Tools

Docker

Linux

PowerShell

Bash

JavaScript

TypeScript

React

Python

C#

ServiceNow

Zendesk

ServiceDesk Plus

Prometheus

Grafana

Kibana

Job description

At Ocean Infinity, we're on a bold mission to subsea data using innovative technology.

Using cutting-edge robotics, autonomous technology and world-class software, we're transforming how complex operations are carried out at sea. Our uncrewed systems are making ocean exploration and operations safer, smarter and more sustainable, helping unlock the vast potential of our oceans while reducing environmental impact.

This isn't a vision for the future. It's happening right now.

As we continue to push the boundaries of innovation and redefine what's possible in the maritime industry, we're looking for exceptional talent to join our fast-growing team.

Ocean Infinity is seeking aSenior Application Engineersupporting internally developed Software in a live production environment. This role reports directly to the Head of Technology Support as part of a larger team supporting an innovative and highspec Tech environment.

What you will do!

• Up to 3rdline support, resolvingincidentsand requestswithinternally developedsoftwareproductsandfollowing up with detailedroot cause analysis;


• Providing structured feedback tothe internaldevelopment teams,identifyingissuesand driving improvements through real-world insights;


• Mentoring generalist IT team membersand working as a key contributor, and participant,toinitiatives reducing the number of incidents, average resolutiontimeand other reliability metrics;


• Working closelyas a liaison betweendevelopment and support teams tomonitorand support frequent software releases as they move from development into production;


• Managing tickets to ensure response and resolutionSLA's are met;


• Managinghigh prioritytickets frominceptionto resolution,communicating with usersIncident management


• Participate in 24x7on-call support process.

What we look for!

• Strong background in 2nd/3rd Line Engineering, with a focus on coaching, mentoring, and supporting junior team members.


• Experienceworking withinternally developed Softwarein production environmentsandsupportingdevelopment teams eitheras a developer,senior QAEngineeror DevOps role;


• Proficiency working in Linux-based environments with Docker, containerised applications, and shell scripting using PowerShell and Bash.


• Experience working with programming languages and frameworks such asJavaScript, Typescript and React; Python and/or C#;


• Working knowledge of observability tools such as Prometheus, Grafana or Kibana to diagnose issuesand interrogate software products;


• Good understanding and experience of ticketing systems, such as ServiceNow, Zendesk and ServiceDesk Plus;


• A can-do attitude with a willingness to solve problems even if occasionally they may be considered "out of scope" for the role;


• Excellent time management skills and ability to prioritise work in a fast-paced environment;


• Effective verbal and written communication skills,to interpret requirements and present findings;


• Interested in others and strives to act in the best interests of the team.

Nice to have!

• At leasttwoyears of experience supportinginternally developed applicationsas a 2nd/3rdline engineer;


• At least five years ofexperienceworkingwithprogramminglanguages;


• Experience working withinan ITSM tool, adhering toITILframeworkincluding Incident Management,Problem Management and Change Management.

*Salary: £55,000 Per Annum*