Application Support Engineer - 12 months' Fixed Term Contract

Application Support Engineer

Role: Application Support Engineer – Hybrid (Fixed Term 12 months)
Location: Harlow, Essex (Hybrid)
Clearance: SC Eligible

Responsibilities

• Deployment & Technical Support: Support the initial deployment, configuration, and technical validation of the new financial platform; provide hands‑on troubleshooting and issue resolution across application, interface and configuration layers; work closely with infrastructure, network, and security teams to ensure end‑to‑end environment readiness.
• Collaboration & Cross‑Functional Engagement: Collaborate with key programme stakeholders including Architecture, Engineering, Programme Delivery, QA, and Finance Operations; participate in Agile ceremonies and contribute to iterative delivery cycles, backlog refinement, and continuous improvement; assist in interpreting architectural and design requirements into actionable support tasks.
• Operational Readiness & Transition: Prepare the wider support organisation for steady‑state operations by developing documentation, standard operating procedures, and knowledge articles; deliver training and knowledge‑transfer sessions to ensure operational teams can confidently support the live Finance platform; contribute to hyper‑care and early life support activities post‑go‑live.
• Monitoring, Incident Management & Continuous Improvement: Implement and maintain monitoring solutions to ensure system availability and performance; manage incident triage, root cause analysis, and problem resolution for platform‑related issues; identify opportunities to enhance stability, resilience, and operational efficiency of the platform.

Qualifications

• Essential: Proven experience in application support, ideally with finance platforms, particularly OneStream; strong understanding of Service Management frameworks such as ITIL; solid background in operating system management (Windows/Linux), application troubleshooting and performance optimisation, log analysis, system monitoring, and incident management; ability to collaborate effectively with technical and non‑technical stakeholders; experience working in structured delivery environments; familiarity with Agile ways of working is advantageous.
• Desirable: Experience supporting a wide range of Data and MI/BI platforms; experience supporting applications in regulated industries (e.g., government, aerospace and defence); knowledge of integration concepts (ETL, Event, APIs, message‑based interfaces); exposure to deployment automation or DevOps practices.

Personal Attributes

• Strong analytical and problem‑solving mindset.
• Clear communicator able to work across diverse technical teams.
• Proactive, collaborative, and committed to delivering high‑quality support.
• Adaptable, eager to learn, and able to transition seamlessly between project and BAU contexts.

Equal Employment Opportunity

RTX adheres to the principles of equal employment. All qualified applications will be given careful consideration without regard to ethnicity, color, religion, gender, sexual orientation or identity, national origin, age, disability, protected veteran status or any other characteristic protected by law.

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