Software Engineer IV, Full Stack

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 . Job Description

X-energy LLC is hiring an experienced Full Stack Engineer to support its Plant Diagnostics team. This role is responsible for designing, developing, and maintaining cloud-native software, data pipelines, and AI architectures. The role will work closely with program managers and other engineers to deliver high-quality, secure and highly available solutions that meet user and business needs. Specializations exist in this track for Special Tooling (Robotics) and Monitoring & Diagnostics.

Job Tasks/Responsibilities

+ Special Tooling (Robotics):

- Design and develop architectures for robotic systems.

- Design and develop software for device drivers, automation, controls, and perception.

- Design and develop user interfaces for robotic systems.

- Implement APIs, telemetry, logging, monitoring, and alerting systems for robotic software components.

- Write robust and testable code.

+ Monitoring & Diagnostics:

- Design, build, and deploy cloud-native agentic AI solutions—alongside broader ML-driven applications—that transform live industrial sensor streams into real-time monitoring, anomaly detection, and predictive diagnostics services.

- Architect and optimize cloud-native pipelines that ingest, enrich, and store diverse structured (PostgreSQL tables, CSV exports) and unstructured data (JSON logs, images, IoT sensor streams), with a special emphasis on high-velocity time-series datasets and their efficient retrieval for analytics.

- Design, implement, and maintain scalable ETL pipelines that ingest, transform, and load data from diverse sources into target analytics platforms with high reliability and performance.

- Automate end-to-end business workflows for nuclear plant facilities by orchestrating data streams, rule engines, and system integrations to streamline operations and minimize manual intervention.

- Develop and implement end-to-end security and governance for cloud data pipelines—covering IAM least-privilege, encryption in transit/at rest, compliance tagging, audit logging, and automated policy enforcement.

- Develop to specific metrics for performance, reliability, and high availability of all production services through proactive capacity planning, rigorous load testing, comprehensive observability, and automated failover/resiliency engineering.

Minimum Qualifications

+ Special Tooling (Robotics):

- Experience with robotics and/or automation.

- Experience developing device drivers, autonomy software and perception software.

- Experience working with motors and sensors.

- Experience with C++, Python and Linux. - Experience with Inter Process Communication (IPC) such as ROS, ROS2 or DDS.

+ Monitoring & Diagnostics:

- Experience with CI/CD pipelines, containerization, automated testing, etc.

- Experience with time-series data platforms.

- Experience with ETL pipelines.

- Experience with cloud-based architectures.

- Experience with security and governance.

- Experience with performance, reliability, and high-availability engineering.

Preferred Skills

Location:

530 Gaither Road, Rockville, MD

Work Site Expectations:

4 days in office

Travel Expectations:

Up to 10% as needed

Hours: 8:00am - 5:00pm, Mon-Fri

Compensation

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.

A reasonable estimate for this position at the level of experience required is:

$136,530- $189,625

Position Job Classification

Full time - Exempt

Benefits

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