ON.energyis setting the standard for large load interconnection. ON’s patented AI UPS™ is a medium-voltage UPS that serves as a firewall, protecting the data center from the grid, and the grid from the data center. With multiple gigawatts currently under construction, we are enabling grid-safe data centers.

About the role

ON.energy is building and operating hyperscale power systems at gigawatt scale. The Finance organization is scaling the systems, processes and controls that support that growth: a NetSuite implementation, Ramp, an inventory management system, process and controls work, and the Road to IPO.

This is a new position, created to own the execution of that portfolio end to end: Idea → Design → Plan → Implementation → Testing → Go-Live → Stabilization → Handover.

The role reports directly to the CFO, with dotted lines to the VP of Accounting/FP&A and the Head of Corporate Finance. That placement gives it a cross-functional mandate across all of Finance rather than a single sub-function. It works daily with Accounting, Treasury, Tax, FP&A, IT, Operations, Procurement, Legal, external advisors and vendors.

Role mission

Own and drive the successful execution of strategic Finance transformation projects, ensuring clear scope, accountability, timelines, cross-functional coordination, risk management, implementation and sustainable adoption. The role acts as Finance PMO Lead under the CFO as Executive Sponsor: it maintains the master plan, controls dependencies, tracks milestones, coordinates advisors, maintains the readiness tracker, identifies delays and escalates decisions.

Key responsibilities

Project management

Develop project charters, scope, objectives, deliverables and success criteria.
Build detailed implementation plans and milestones.
Establish project governance and meeting cadence.
Coordinate cross-functional teams and track deliverables and dependencies.
Maintain project documentation and drive projects through completion.

Project governance

Establish and maintain a consistent governance methodology: Executive Sponsor, Project Owner, Project Manager, Workstream Owners, Timeline, RACI, Budget, Risks, Decision Log and Status for every project.
Report project status to the CFO on a fixed cadence, with the VP of Accounting/FP&A and the Head of Corporate Finance included.

Risk & issue management

Maintain the risk register, issue log, dependency tracker, decision log and escalation process.
Surface problems early and bring decisions to the CFO. Do not wait until a project is late to communicate that it is late.

Finance systems implementation

Lead requirements gathering, process mapping and system design workshops.
Coordinate data migration, UAT and cutover planning.
Run go-live, hypercare and the post-implementation review.
Manage implementation partners and vendors: statements of work, deliverables, quality and escalation.

Change management

Coordinate stakeholder communication, training plans and SOPs.
Own go-live readiness, post-go-live support and process documentation.
Track user adoption against defined adoption KPIs.

Finance transformation portfolio

Build and maintain the Finance Transformation Roadmap: initiative, owner, PM, priority, status and target date.
Run a monthly portfolio review with the CFO, the VP of Accounting/FP&A and the Head of Corporate Finance.

Qualifications

Required

7–10 years of experience combining Finance / Accounting, Project Management, Finance Transformation and ERP implementation.
Track record leading finance systems implementations end to end from the client side.
Working command of core finance processes — close, AP/AR, expense, inventory and costing — and how they are reflected in an ERP.
Experience managing implementation partners and vendors on scope, timeline and quality.
Strong written and executive communication; able to drive accountability without direct authority.
Professional English and Spanish, given that vendors and advisors work in both

Preferred

NetSuite, Oracle or SAP; finance transformation; SOX; process redesign; UAT and data migration; internal controls; high-growth companies.
Energy, infrastructure or construction industry exposure, including project accounting and project finance.
PMP, CPA, CMA, Agile / Scrum or Lean Six Sigma. PMP is nice-to-have, not a requirement — successful ERP implementations count for more.

For US-based roles - What you’ll get:

Competitive salary + annual performance-based bonus eligibility
Medical, dental, and vision insurance
401(k) with company match
Paid time off and company holidays

For Mexico-based roles - What you’ll get:

Competitive salary + annual performance bonus eligibility
Christmas Bonus (Aguinaldo): 30 days
Major medical expenses and life insurance
Paid time off and holidays (per local policy)

For all roles:

Professional development and growth opportunities
Opportunity to grow with a mission-driven team shaping the future of clean energy
Equal Opportunity: ON.energy is committed to equal employment opportunity and to maintaining a work environment free of harassment, discrimination, or retaliation.
Benefits vary by role and location and are subject to change.

Agency Notice:ON.energy does not accept unsolicited resumes from staffing agencies, search firms, or third-party recruiters. Resumes submitted without a fully executed Master Services Agreement (MSA) and a written request from an authorized member of our Talent Acquisition team will be considered the property of ON.energy. No placement fees or compensation will be paid for unsolicited candidate submissions.

ON Energy Storage

Finance Transformation & Project Manager

About the Job

Requirements

Responsibilities

Desired Qualifications