The Opportunity We have an exciting opportunity for a Senior Concept / Mechanical Engineer to join our Infrastructure Delivery team on a full‐time, permanent basis. Reporting to the Manager Development Engineering, you will play a key role in shaping the early‐stage (FEL1/FEL2) development of APA's gas infrastructure projects in a front‐end, concept‐focused capacity. This is not a traditional detailed engineering role. Success in this position comes from your ability to work in ambiguity, generate and test ideas, and define practical, fit‐for‐purpose engineering solutions before they progress into delivery.You will develop and assess high‐level gas transmission infrastructure and pipeline concepts, screen technical options, and establish the foundations for major infrastructure decisions, ensuring solutions are safe, viable and aligned to business objectives.Location: Brisbane or Melbourne, with flexible and hybrid working options.Key ResponsibilitiesLead development of concept and feasibility solutions (FEL1/FEL2) for gas infrastructure projects (pipelines, compression, storage)Translate customer requirements and business constraints into practical, high‐level engineering conceptsRapidly generate multiple solution concepts, systematically evaluate them, and converge on the most viable pathway through stage‐gate approvalsConduct concept‐level assessments and trade studies to inform key project and investment decisionsDeliver clear, concise front‐end reports outlining options, risks and recommendationsCollaborate across disciplines to solve complex, early‐stage engineering challenges and support project shapingQualificationsBackground in oil & gas / energy, with exposure to concept, feasibility or FEED workProven ability to operate effectively in high ambiguity environments where information is incomplete, using engineering judgement to progress decisionsStrong skills in optioneering, problem solving and technical decision‐makingHands‐on mindset – a doer who actively contributes, not just reviewsAbility to think laterally, challenge assumptions, and explore innovative solutionsExcellent written and verbal communication, with the ability to clearly articulate ideas and recommendationsDesirable: Experience in gas pipeline transmission systemsBenefits We offer competitive remuneration, employee benefits, flexible working arrangements, and wellbeing initiatives.Employment Policy APA is an equal opportunity employer. We embrace diversity in our workforce and are committed to a safe, inclusive workplace.Applicants must be eligible to work in Australia to be considered.This vacancy works with critical APA data, systems or infrastructure and candidates are subject to background vetting (including Police checks) before & during employment.Role closes on Wednesday, 3 June 2026. Role Reference Number: JR4064.APA Group will not accept unsolicited resumes from recruitment agencies. We will contact successful candidates after the closing date.#J-18808-Ljbffr