Engineer IV, AI & Digital Engineering

United States·Rockvillemid

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Overview

X-energy LLC conducts a thorough recruiting process and will never issue offers without interview to discuss qualifications and responsibilities.

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X-energy LLC conducts a thorough recruiting process and will never issue offers without interview to discuss qualifications and responsibilities. All applications will be submitted via our company career page, www.x-energy.com/careers/. We will never ask you to provide payment information as part of the recruiting process. If anyone claiming to represent X-energy directs you in a manner otherwise, please contact us at www.x-energy.com/contact-us.

The AI & Digital Engineering Software Engineer IV contributes to X-energy's Artificial Intelligence (AI) Solutions Tiger Team, which accelerates Xe-100 nuclear reactor development workflows by designing and building production-ready, AI-native applications, agentic workflows, and the platform infrastructure that supports them. Working in a fast-paced, collaborative team environment and under the general guidance of senior engineers and technical leadership, this engineer applies modern large language models, agentic AI, and cloud-native engineering practices to help move X-energy from siloed documents toward a living, queryable engineering model spanning requirements, design, manufacturing, regulatory, and deployment processes. This role contributes directly to X-energy's mission of becoming an AI-first organization and to the broader effort to set the industry standard for nuclear deployment speed and operational excellence, operating with considerable latitude for independent judgment on assigned tasks.

Responsibilities

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Bachelor's degree in Computer Science, Artificial Intelligence, Systems Engineering, Engineering, or a related field from an accredited university or college.
Typically, ten years of relevant software engineering experience, including experience in one or more of the specialization tracks described above.
Experience with Git, GitLab, CI/CD, and modern development workflows.
Proficiency with Jira, Confluence, and AI-enhanced development environments (Claude Code or similar AI-assisted development tools).
Experience working in collaborative, fast-paced development teams.
Strong written and verbal communication skills, including the ability to explain complex technical concepts to both technical and non-technical audiences.
Ability to work a hybrid schedule in the Rockville, MD office Tuesday, Wednesday, and Thursday.

Requirements

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Experience in the nuclear energy industry, aerospace, defense, or other highly regulated technical fields, including familiarity with NRC regulatory workflows.
Prior experience contributing to AI products or internal platforms for engineering, manufacturing, or scientific use cases.
Working literacy in digital engineering: requirements (INCOSE Guide, ReqIF), MBSE (SysML v1/v2), ISO 19650 information management, digital thread, traceability, and V&V; familiarity with Cameo Systems Modeler, Capella, or equivalent MBSE tools.
Experience integrating PLM and requirements systems (Teamcenter, Jama) with platforms; familiarity with graph databases (Amazon Neptune, Neo4j) for traceability or cross-system entity resolution.
Familiarity with NQA-1, 10 CFR 50 Appendix B, or equivalent software-quality frameworks; exposure to AI evaluation harnesses or data pipelines that produce evidence suitable for regulatory audit.
Familiarity with AWS GovCloud and FedRAMP-authorized services; familiarity with ITAR, EAR, or 10 CFR 810 export control in technical work.
Exposure to MCP (Model Context Protocol) tool development.
Familiarity with Idaho National Laboratory's Deep Lynx / Nexus or similar nuclear digital-engineering frameworks.
INCOSE ASEP or CSEP certification; prior open-source contributions to AI, MBSE, or digital-engineering tooling.

Working knowledge of React, TypeScript, and modern JavaScript development; experience with Vite, Bun, and Tailwind CSS.
Proficiency implementing WebSockets and REST APIs.
Background developing user interfaces for technical or engineering applications.
Experience with AWS services for web-application deployment.

Working knowledge of modern large language models, agentic architectures, and multi-turn agent workflows.
Hands-on experience with at least one of AWS Bedrock, AWS Strands, LangChain, LangGraph, or LlamaIndex.
Working knowledge of RAG and Graph-RAG, including vector search, hybrid retrieval, re-ranking, and chunking.
Proficiency in TypeScript and Python; familiarity with Node.js/Express and a Python web framework (FastAPI or similar).
Familiarity with AI evaluation methodology (golden datasets, LLM-as-judge, red-teaming, hallucination detection) and exposure to eval pipelines using DeepEval, Ragas, Arize Phoenix, or equivalent self-hostable frameworks.
Working understanding of AWS AI services, particularly AWS Bedrock.

Experience designing and implementing data lakes/lakehouses and ETL processes; working knowledge of AWS data services including S3, Glue, Lake Formation, Athena, Aurora, and DynamoDB.
Working experience with at least one open table format (Apache Iceberg, Delta Lake, or Apache Hudi), including exposure to schema and partition evolution.
Experience designing canonical data models in a regulated or engineering-heavy domain, with exposure to schema governance, data contracts, and multi-producer/multi-consumer patterns.
Experience building production ETL pipelines and connectors with schema evolution, error recovery, and observability.
Hands-on experience integrating at least one enterprise engineering system (PLM, requirements management, ERP, MES — e.g., Teamcenter, Windchill, Polarion, DOORS, Jama, P6) with a data platform.
Familiarity with identity federation and B2B authentication (SAML, OIDC, SCIM, cross-account IAM); familiarity with engineering data-interchange formats (STEP, ReqIF, SysML XMI, or similar).
Working understanding of data security, classification, lineage, and governance best practices.

Hands-on experience with Docker containerization, including building, testing, and deploying production applications.
Experience administering GitLab CI/CD systems (runner setup, pipeline configuration, troubleshooting).
Working proficiency with AWS, particularly ECS, ECR, VPC, and Terraform infrastructure-as-code; experience managing AWS data services (DocumentDB, OpenSearch, Redis, Aurora Postgres, or DynamoDB).
Experience with release engineering and deployment automation.
Knowledge of monitoring and observability tools (Datadog preferred) and cloud-based alerting solutions.
Proficiency with Linux and/or macOS command-line environments and with container orchestration services.

What We Offer

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As required by Maryland and other applicable state law, X Energy, LLC (X-energy) lists the expected compensation range for a publicly advertised job opportunity based upon the job requirements (e.g. education/training, experience, skill sets, etc.). Individual candidates who meet the job requirements for the posted position will be offered a salary within this range based on their respective levels of education/training, experience, and other qualifications unique to them. Salary ranges may vary based on the specific office location and region referenced in the posting to take into consideration differences in cost of living and may not be reflective of all regions. Please note that compensation ranges listed for US job postings reflect base salary only and do not include benefits or other incentives.

Offers within the posted salary range are commensurate with the individual’s qualifications for the position, along with a view on internal equity, market data, and room for growth. The salary range for this position is:

$180,000- $205,000

X Energy, LLC offers a robust benefits package that includes a 401K plan with an employer match, Medical/Dental /Vision Insurance, Life and Disability Insurance, Paid Time Off, and a Tuition Reimbursement/Professional Development policy that supports the continuing education of our employees.

An Equal Opportunity Employer.  All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.

X Energy, LLC participates in E-Verify. Please visit the links below for more information about E-Verify and the protection of your Right to Work.

Right To Work Link: If you have the right to work, don't let anyone take it away (e-verify.gov)

E-Verify Participation Link: E-Verify Participation Poster English and Spanish

Full time - Exempt