3rd Line Engineer
Tired of firefighting? Use your senior expertise on complex change, high-impact design and real service improvement — not endless ticket escalations.
About Aabyss
Aabyss exists to enable and support organisations with technology, empowering them to grow and fulfil their goals. Our niche is in IT Security & Support, and we’re driven by a culture that values going the extra mile, being willing to help, and staying eager to learn and develop. We challenge comfortably, pushing boundaries to find better ways forward, and we do so with a proactive, passionate spirit that puts people first. If you’re ready to join a team that thrives on excellence, growth, and genuine collaboration, we’d love to hear from you.
Our Core Values
WILLING to HELP
We’re ready to assist our colleagues, our clients, or anyone in need. We have a proactive attitude towards supporting others, ensuring everyone achieves their goals.
Go the EXTRA MILE
We have a positive and energetic approach to tasks, going beyond what is expected. We enthusiastically put in the effort and dedication to achieve outstanding results, and demonstrate genuine passion for our work.
Comfortable CHALLENGING
We have the confidence to question and improve processes, ideas or decisions. We respectfully push boundaries and seek better ways to achieve excellence without fearing conflict.
Eager to LEARN & DEVELOP
We have a continuous desire for personal and professional growth. We actively seek new knowledge, skills and experiences to stay ahead and contribute more effectively to the team and the business.
About the Opportunity
As a 3rd Line Engineer, you provide senior technical capability across complex incidents, planned change, and project delivery.
This role focuses on design quality, technical risk management, and delivery of high-impact work — ensuring solutions are robust, supportable, and aligned to agreed standards.
You do not act as a permanent escalation queue or default owner of reactive tickets. Instead, you apply specialist expertise where risk, complexity, or impact requires senior technical judgement.
You report to the Technical Delivery Manager and work closely with engineering, service leadership, and solution design functions to ensure technical delivery is safe, predictable, and scalable.
Our Service Operating Model (SOM) is established and approved by leadership and is actively being embedded across the organisation. This role contributes to strengthening that model in practice — reinforcing standards, improving design quality, and reducing repeat failure.
Key Responsibilities
Technical Expertise & Escalation Support
Provide senior technical expertise across infrastructure, cloud, networking, identity, and security platforms.
Lead diagnosis and resolution of complex or high-impact technical issues.
Support Major Incidents when specialist expertise is required.
Participate in technical swarming while maintaining clear ownership boundaries.
Escalate risk early where stability or service quality is at stake.
Planned Change & Project Delivery
Deliver complex technical change and project tasks to agreed scope and quality.
Ensure changes are risk-assessed and executed in line with agreed standards.
Validate that delivered solutions are supportable before transition into live service.
Maintain high technical standards across implementation and validation.
Ensure documentation, access, monitoring, and support considerations are complete prior to handover.
Design Quality & Standards Alignment
Contribute to technical design patterns, standards, and best practice.
Challenge non-standard or high-risk approaches constructively.
Ensure solutions introduced into service are operable and sustainable.
Support structured handover from design into delivery.
Incident & Risk Management
Apply senior judgement during high-impact or ambiguous incidents.
Support structured Post-Incident Reviews where systemic learning is required.
Identify root causes and improvement opportunities beyond immediate symptom resolution.
Contribute to preventative improvements that reduce repeat incidents.
Collaboration & Technical Leadership
Support 1st and 2nd Line engineers through guidance and mentorship.
Share knowledge to raise overall engineering capability.
Work closely with the Technical Delivery Manager to protect technical quality.
Maintain professional communication with internal stakeholders and clients where required.
Collaboration & Alignment
You will work closely with:
Technical Delivery Manager – delivery quality, risk management, and prioritisation of high-impact work.
Service Desk Manager – ensuring escalation boundaries are clear and reactive flow remains structured.
Project Engineers – supporting safe implementation and technical oversight where required.
Solutions Engineer – ensuring designs are supportable and delivered as intended.
Head of Service – reinforcing standards, learning, and service improvement.
Experience & Skills Desired
Significant experience in a senior technical role within an MSP or IT services environment.
Deep expertise in one or more specialist areas (e.g. cloud, infrastructure, networking, security, identity).
Strong troubleshooting skills across multi-platform environments.
Experience delivering complex change and project-based work.
Comfortable operating during Major Incidents or high-pressure scenarios.
Ability to apply structured risk assessment to technical decisions.
Strong documentation discipline and attention to supportability.
Clear written and verbal communication skills.
A mindset aligned to predictable service delivery, structured change, and continuous improvement.
Experience working within a defined service or operating model is advantageous, but a pragmatic, improvement-oriented attitude is essential.
Benefits – Flexible, People-Focused Workplace
25 days holiday plus bank holidays (33 days).
Company profit share scheme (in addition to salary).
Private medical insurance.
Company contributory pension scheme.
Work from home flexibility.
Flexible working hours.
Cycle to Work scheme.
Join Us – Make a Difference as a 3rd Line Engineer
If you enjoy solving complex technical challenges while improving the systems around you, this role offers the opportunity to apply your expertise where it matters most.
As a 3rd Line Engineer, you will play a key role in strengthening technical standards, reducing systemic risk, and delivering complex work safely and predictably — without reliance on chaos or heroics.
You’ll join a supportive, ambitious organisation that values clarity, accountability, and continuous improvement, and where senior technical capability is applied deliberately to improve service stability and long-term quality.
- Department
- Technical Delivery
- Locations
- Liverpool
- Remote status
- Hybrid
About Aabyss
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