Customer Portfolio Manager

Lumea; Sydney; On-site; AUD 140,000 - 190,000; Full time

Job summary

LUMEA is seeking a Customer Portfolio Manager to lead senior customer relationships across a portfolio of major energy infrastructure projects in Australia. You will interface with customers, delivery teams and internal commercial stakeholders to oversee commitments, risks and commercial outcomes.

This role offers the chance to influence governance and project outcomes across the lifecycle, leveraging strong negotiation and multidisciplinary collaboration to protect customer confidence and drive

Qualifications

• Experience in infrastructure, capital projects, or similar environments.
• Ability to lead senior customer relationships across complex projects.
• Strong commercial judgement including exposure to contracts and negotiations.

Responsibilities

• Own and maintain senior customer relationships, aligning expectations and managing escalations.
• Provide customer and commercial leadership across a portfolio of infrastructure projects.
• Maintain visibility of customer commitments, commercial exposure, delivery confidence and portfolio risks.
• Review and challenge customer, commercial and delivery positions to support timely decisions.
• Collaborate with project delivery and commercial management to align delivery facts and strategy.
• Lead or support material customer discussions and negotiations within agreed guardrails.
• Influence multidisciplinary teams and senior stakeholders without direct authority.
• Bring customer and commercial insights into bid handover, governance, and close-out.

Skills

Senior stakeholder management

Commercial leadership

Influence without authority

Education

Engineering/Project management/Business degree

Job description

Join LUMEA™ as Customer Portfolio Manager

LUMEA is creating a smarter energy future for Australia. As the commercial arm of Transgrid, LUMEA has built a reputation as experts in developing energy connections, management and storage assets, as well as managing technically and commercially innovative projects. We also provide cutting-edge telecommunications services, manage one of Australia’s most extensive fibre networks and a high number of wireless colocation sites. Join our team of talented and diverse individuals, and work on exciting projects that are transforming the Australian energy landscape.

LUMEA is creating a smarter energy future for Australia. As the commercial arm of Transgrid, LUMEA has built a reputation as experts in developing energy connections, management and storage assets, as well as managing technically and commercially innovative projects. We also provide cutting-edge telecommunications services, manage one of Australia’s most extensive fibre networks and a high number of wireless colocation sites. Join our team of talented and diverse individuals, and work on exciting projects that are transforming the Australian energy landscape.

LUMEA is a Transgrid brand. Transgrid's network is the backbone of the National Energy Market, enabling energy trading between Australia’s three largest states along the east coast and supporting the competitive wholesale electricity market to deliver safe, reliable and low-cost power for more than three million homes and businesses.

Are you a driven and dynamic professional looking to make a real impact in Australia’s evolving energy landscape? Here’s your opportunity to lead exciting infrastructure projects with LUMEA™, a Transgrid Group brand at the forefront of competitive renewable energy innovation.

About The Role

The Customer Portfolio Manager leads senior customer relationships and customer-commercial outcomes across a portfolio of major energy infrastructure projects.

Acting as a key interface between customers, project delivery teams and internal commercial stakeholders, the role maintains a portfolio-level view of customer commitments, commercial exposure, delivery confidence and emerging risk.

This is not a traditional project delivery role. You will work through multidisciplinary teams to align customer expectations, delivery realities and commercial priorities, intervening and escalating where required to protect customer confidence and sustainable commercial outcomes.

The role offers the opportunity to influence complex projects across their lifecycle, support material customer and commercial decisions, and contribute to improved governance and portfolio performance.

What You’ll Do

• Own and maintain senior customer relationships, aligning expectations, managing escalations and maintaining confidence through complex project environments.
• Provide customer and commercial leadership across a portfolio of infrastructure projects.
• Maintain visibility of customer commitments, commercial exposure, delivery confidence and emerging portfolio risks.
• Review and challenge customer, commercial and delivery-confidence positions, supporting timely decisions, intervention and escalation.
• Work with project delivery and commercial management teams to align delivery facts, customer positions and commercial strategy.
• Lead or support material customer discussions and negotiations within agreed commercial guardrails.
• Influence multidisciplinary teams and senior stakeholders without relying on direct reporting authority.
• Bring customer and commercial insights into bid handover, project governance, close-out and continuous improvement.

What You’ll Bring

• Relevant tertiary qualifications in engineering, project management, business or a related discipline, or equivalent practical experience.
• Experience in infrastructure, capital projects, commercial delivery, customer portfolio management or a related environment.
• Demonstrated success leading senior customer and stakeholder relationships across complex projects.
• Strong commercial judgement, including exposure to contract risk, claims, variations, financial performance and customer negotiations.
• Ability to understand complex technical, commercial and contractual matters and communicate them clearly to customers and executives.
• Demonstrated ability to influence multidisciplinary teams and resolve complex issues without relying solely on direct authority.
• Strong negotiation, conflict-management, problem-solving and escalation skills.
• A practical understanding of infrastructure project governance, safety, environmental and assurance obligations.

Why this role?

This is an opportunity to operate at the intersection of customer leadership, commercial performance and project delivery. You will work across renewable energy connections, data centres and other critical infrastructure initiatives that are helping shape Australia’s energy future.

You will have visibility across a portfolio rather than a single project, the opportunity to influence significant customer and commercial decisions, and a mandate to improve customer confidence, delivery alignment and portfolio outcomes.

You will join a collaborative team that values sound judgement, constructive challenge and the ability to achieve outcomes through strong relationships.

Our Values

Transgrid’s core values encompass safety, achievement, integrity, and service. Prioritising safety above all, the company emphasises making a meaningful impact through achievement, upholding honesty through integrity, and delivering exceptional outcomes for customers and communities through dedicated service. These values are ingrained in the actions and behaviours of Transgrids people, who embody them every day.

Recognition & Reward

We believe in providing our people personal, professional and social benefits so that they can deliver their best work every day. Employees have access to a range of corporate discounts across retail, utilities, travel, health & wellbeing etc, as well as novated leasing options, flexible workplace policies, 20 weeks paid parental leave and more!

Applications close on 18 September 2026

Please note, our vacancy close dates may be subject to change, and we will assess applications as they are received.

We do not accept agency introductions as Transgrid operates a direct sourcing model.

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