The Nuclear Company is the fastest-growing AI-enabled startup in nuclear energy, bringing together experienced nuclear professionals, technologists, engineers, and builders to deliver the next generation of nuclear power. Through our design-once, build-many approach, we are creating a repeatable model for deploying nuclear fleets—combining the industry’s highest standards for safety, quality, and regulatory rigor with the speed and innovation required to meet the world’s growing energy needs.

We are building the future of nuclear work. Every employee is expected to use AI, technology, and our Nuclear Operating System (NOS) to strengthen engineering and operational decision-making, improve quality, eliminate inefficiencies, and accelerate execution without compromising safety. Our nuclear expertise shapes the continued evolution of NOS, enabling us to capture institutional knowledge, standardize best practices, and deliver complex projects with greater consistency and certainty.

We hire people who believe nuclear energy is essential to human progress. Our team is made up of mission-driven experts who respect the rigor of the industry while challenging outdated ways of working. They bring deep technical judgment, intellectual curiosity, high agency, and the humility to learn from others. Our values—Transparency, Responsibility, Unity, Scrappy, and Tenacity—guide how we hire, collaborate, and make decisions. Together, they form TRUST, the foundation of our safety culture and our commitment to intellectual honesty, personal accountability, open communication, and operational excellence.

About the role

The Estimator is a key participant in project development and the successful capture of business for TNC. The successful candidate will be familiar with the Association for the Advancement of Cost Engineering (AACE) and their recommended practices related to the development of cost estimates. The estimator will interface with several stakeholders, both inside and outside of TNC, to develop reliable cost estimates with the appropriate pedigree aligned with international standards.

Responsibilities

Estimate Development: Given a scope of work, the estimator will work with key stakeholders to develop an estimate aligned with the requisite AACE classifications appropriate for the phase of the project
Create a Basis of Estimate: In support of the estimate, the BOE shall provide enough information a reasonable individual can reach the same outcome
Cross-Functional Collaboration & Stakeholder Alignment: Collaborate with engineering, procurement, construction, commissioning & testing, regulatory, and project controls teams to collect inputs to support estimate development
Risk and Assumption Identification: Based on inputs, the estimator will identify key risks and assumptions associated with each element of the estimate. The estimator will work with risk personnel to ensure quantitative analysis is performed based on this information and included in the basis of estimate
Estimating Software & Database Management: Utilize industry-standard estimating platforms (e.g., HCSS HeavyBid, InEight Estimate, Sage Estimating, or CostOS) to develop, organize, and maintain detailed cost estimates with traceable line items, historical benchmarking, and parametric modeling capabilities
AI-Enhanced Cost Modeling: Leverage AI and machine learning tools to analyze historical project data, identify cost drivers, improve estimate accuracy, and perform automated benchmarking against comparable projects across the fleet
Proficiency with estimating software and cost databases (e.g., InEight, CostOS, RSMeans, or equivalent) for developing and maintaining structured, auditable cost estimates
Familiarity with AI/machine learning applications for parametric estimating, historical data analysis, or probabilistic cost modeling (e.g., Monte Carlo simulation tools, @Risk, Crystal Ball)

Experience

Bachelor's degree or equivalent work experience
15+ years of experience in project controls
5+ years of experience as an estimator on large project