Senior Data Platform Engineer, Enterprise Data

About Radiant

Radiant is an El Segundo, CA-based startup building the world's first mass-produced, portable nuclear microreactors. The company's first reactor, Kaleidos, is a 1-megawatt, fail-safe microreactor that can be transported anywhere power is needed and run for up to 5 years without refueling. Portable nuclear power with rapid-deploy capability can replace similar-sized diesel generators and provide critical asset support for hospitals, data centers, remote sites, and military bases. Radiant's unique, practical approach to nuclear development leverages modern software engineering to rapidly deliver safe, factory-built microreactors that use existing, well-qualified materials. Founded in 2020, Radiant is on track to test its first reactor at the Idaho National Laboratory this summer, with initial customer deliveries beginning in 2028.

About the Role

We're building a new team to own Radiant's internal data infrastructure, executive analytics, and AI capabilities. As a Senior Data Platform Engineer, you'll be hands-on building the integrations and pipelines that connect Radiant's operational systems, Finance, HR, Supply Chain, Manufacturing, and Recruiting, into a unified data platform.

Your first priority will be the ION-Ramp integration: building the pipeline that enables three-way matching (PO + Receipt + Invoice) between our manufacturing execution system and payments platform. This directly reduces manual work for the Finance team. From there, you'll expand to connect 9 enterprise systems, build dbt transformation models, and ensure data quality across the platform.

Responsibilities & Duties:

• Build integrations: Configure Fivetran connectors, build custom pipelines, and connect 9 enterprise systems (ION, Ramp, QuickBooks, Rippling, Ashby, Salesforce, SharePoint, Smartsheet, DocuSign)
• Develop the ION-Ramp pipeline: Build the Snowflake → Databricks → Ramp pipeline that enables three-way matching for Finance
• Write dbt models: Transform raw data into clean, documented, tested models for dashboards and analytics
• Ensure data quality: Implement testing, monitoring, and alerting for data pipelines; catch issues before they reach dashboards
• Support dashboards: Work with stakeholders to ensure the data models support Finance, Operations, and HR/Recruiting dashboards.
• Document everything: Maintain clear documentation for pipelines, models, and data definitions

Required Qualifications & Skills:

• Bachelor's degree in computer science, physics, or a similar field.
• 4+ years of data engineering or software engineering experience.
• Strong experience in Python, C++/C, Java or a similar language.
• Experience with data warehouses, Databricks, Snowflake, BigQuery, or Redshift
• ETL/ELT pipeline development, Fivetran, Airbyte, Stitch, or custom pipeline experience
• API integration experience, REST, GraphQL; you're comfortable reading API docs and building integrations with enterprise SaaS tools
• Data modeling skills, dimensional modeling, schema design, understanding of how data will be used downstream

Desired Qualifications & Skills:

• 6+ years of data engineering or software engineering experience
• Background in hardware or hardtech companies-you understand manufacturing, supply chain, and physical product development
• Experience with dbt (data build tool)
• Experience with data quality frameworks and testing (Great Expectations, dbt tests, etc.)
• Comfortable building lightweight internal tools-Python/Flask, basic frontend-or using AI coding assistants (Cursor, Copilot) to extend your capabilities
• Familiarity with MES, ERP, or supply chain systems (ION, SAP, NetSuite, etc.)

Additional Requirements:

• Must be willing to work extended hours and weekends as necessary to accomplish our mission
• Must work 100% onsite at El Segundo HQ.

Benefits and Perks

• Stock: Substantial incentive stock plan for all full-time employees.
• Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans.
• One Medical: Sponsored memberships for employees and their dependents.
• Vision: 100% top tier plan coverage + 50% for dependents.
• Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents.
• Voluntary life, accident, hospital, critical illness, commuter and FSA/HSA are offered as employee contributed benefits.
• 8-weeks of paid parental leave for all parents. Additional paid pregnancy leave for CA employees.
• Daily catered lunch. Free snacks and drinks.
• Flexible PTO policy. Remote workday allocation.
• Company and team-bonding events, happy hours and in-person camaraderie.
• Beautiful El Segundo headquarters close to the Pacific Ocean.

Total Compensation and Benefits
Radiant compensates people for impact and invests in those who continue to raise the bar. Radiant's new hire compensation package includes base salary, substantial equity grants, and comprehensive health benefits. Total compensation and level are determined through a rigorous evaluation of interview performance, experience, education, and qualifications, and are designed to support continued growth as scope, responsibility, and impact expand at Radiant.

The best of today's advanced reactor builders don't wait for job postings. They join the winning team. If that's you, contact us directly for immediate opportunities: View email address on click.appcast.io.

We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law.

Unfortunately, we are unable to provide visa sponsorship at this time.

This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant's capacity to serve in compliance with U.S. export controls.