OPS:Project Engineer (Senior / Principal)

Flatiron Energy

Sourced from Flatiron Energy's careers site · verified 2 days ago

Boston, New York or Denver (hybrid), or remote with up to 25% travel hybrid Full time 5+ years exp Posted November 3, 2026
Job description

About Flatiron Energy

Flatiron Energy, a Hull Street Energy portfolio company, is developing and building grid scale standalone energy storage assets that integrate renewable energy onto the grid, replace fossil fuel plants, and increase grid reliability. Founded by a team of experienced energy storage experts, Flatiron has a demonstrated track record of developing critical infrastructure needed to achieve our reliability and energy climate goals. The leadership team has deep experience in developing constructing and owning and operating energy storage assets in wholesale markets.

Flatiron Energy is a high growth company with a dynamic, fast-paced, challenging, creative, fun, start-up culture. The right candidate will be excited to help build the company from the ground up, recognizing the challenges and opportunities for growth inherent in such a role. The Flatiron team is passionate about fighting climate change while ensuring their projects have an equitable impact on surrounding communities. Flatiron is only looking for candidates who resonate with our mission.

The Project Engineer will play an integral role in achieving NTP of our projects. The right candidate will be willing to roll their sleeves up to tackle multiple problems, collaborate with others, while leading projects through critical engineering and supporting technical procurement, phases to ensure that safety, quality, schedule, and cost objectives are achieved.

Responsible for leading the design and engineering activities necessary to develop, construct, and operate standalone grid-scale energy storage projects in target markets. Collaborate with the Flatiron development and EPC teams as well as a multitude of vendors, subcontractors, and consultants.

Key Responsibilities:

  • Lead engineering and related technical scopes for the life cycle of the project, from site prospecting, conceptual design, through IFC and construction mobilization.
  • Create the basis of design documents and engineering scope of work packages, conduct design reviews, develop technical specifications.
  • Develop EPC and Owner’s Engineer (OE) RFP packages, including scopes of work and technical specifications, and lead the technical evaluation and selection process for bidders. Manage external engineering consultants and support development, procurement, and construction activities, as applicable.
  • Conduct quality control for project engineering deliverables in tandem with development team to ensure accuracy and consistency with interconnecting utility and local AHJ requirements.
  • Serve as a subject matter expert on BESS equipment, high voltage substations, and grid
  • Perform in depth energy storage product technology diligence, identifying key risks and value engineering opportunities while potentially overseeing vendor’s product development.
  • Support the development and review of technical specifications and RFP packages for batteries, inverters, main power transformers, circuit breakers, High Voltage GIS, and medium voltage switchgear.
  • Support the project development team with securing discretionary permits and stakeholder engagement with local AHJs.
  • Play a key role in the planning and execution of development projects ensuring technical, commercial, and financial requirements and milestones are met.

Key Qualifications:

  • Bachelor’s degree in electrical engineering from an accredited university or
  • Minimum of five (5) years of experience related to the engineering and design of energy infrastructure, ideally focused on battery energy storage, high voltage substations, and/or
  • Experience coordinating and integrating multiple external engineering consultants and design firms on large infrastructure projects including experience integrating low/medium/high voltage systems, protection & SCADA, civil, structural, mechanical, and fire protection.
  • Experience developing, executing, and managing engineering deliverables including drawings, studies, schedules, budgets, QA/QC procedures, and other reporting
  • Knowledge of relevant industry codes and standards (e.g., IEEE, NFPA, ANSI, UL, )
  • Familiarity with industry OEMs for energy storage, High Voltage, and Balance of Plant
  • Proficiency with AutoCAD, Bluebeam Revu, and Navisworks
  • Technical contract negotiation experience is a plus
  • Superior verbal and written communication with a high-level of attention to detail, along with strong problem-solving skills, resourcefulness, and creativity.
  • Ability to adapt to changing priorities, work scopes, and deadlines in a fast pace and dynamic environment
  • Ability to diligence project sites, substations and other High Voltage electrical infrastructure

Skills

  • electrical engineering degree
  • energy infrastructure engineering and design
  • battery energy storage
  • high voltage substations
  • external engineering consultant coordination
  • low/medium/high voltage systems
  • protection
  • SCADA
  • civil engineering
  • structural engineering
  • mechanical engineering
  • fire protection
  • engineering deliverables
  • drawings
  • studies
  • schedules
  • budgets
  • QA/QC procedures
  • IEEE
  • NFPA
  • ANSI
  • UL
  • energy storage OEMs
  • high voltage OEMs
  • Balance of Plant OEMs
  • AutoCAD
  • Bluebeam Revu
  • Navisworks
  • verbal communication
  • written communication
  • attention to detail
  • problem-solving
  • resourcefulness
  • creativity
  • adaptability
  • site diligence
  • substation diligence
  • high voltage electrical infrastructure diligence
  • technical contract negotiation
  • energy storage
  • battery energy storage systems
  • grid infrastructure
About this role

Summary

Lead engineering design, technical procurement, and project development for grid-scale energy storage projects.

Job title

OPS:Project Engineer (Senior / Principal)

Experience

5+ years

Industry

energy

Location

Boston, MA · Hybrid

+ 3 more locations
  • New York, NY · Hybrid
  • Denver, CO · Hybrid
  • United States · Remote

As listed by the employer.

Salary

Pay not disclosed by employer

Management role

No

Posting history
  1. Nov 3, 2026 First posted
  2. Nov 3, 2026 Live now

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