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Completion Fluids Engineer Jobs (NOW HIRING)

Relativity Space

Lead, Components Engineering

Long Beach, CA · On-site

$107K - $141K/yr

This role involves a range of skillsets: design, analysis (thermodynamics, structures, fluids ... to completion with minimal oversight. Along with these high expectations, this position will ...

Vast

Propulsion Test Engineer

Mojave, CA · On-site

$86K - $120K/yr

Plan and lead hazardous operations including work with high pressures and cryogenic fluids ... to completion. * Author and maintain test procedures, sequences, and configuration files for ...

Valaris PLC

WI · On-site

Responsible for bunkering, transferring fuel, water and other fluids safely and efficiently ... Completion of degree from a recognized Maritime Academy or University is required. * Completion of ...

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Completion Fluids Engineer information

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$37K

$87.2K

$136.5K

How much do completion fluids engineer jobs pay per year?

As of Sep 10, 2026, the average yearly pay for completion fluids engineer in the United States is $87,220.00, according to ZipRecruiter salary data. Most workers in this role earn between $76,500.00 and $97,500.00 per year, depending on experience, location, and employer.

What is the difference between Completion Fluids Engineer vs Drilling Fluids Engineer?

AspectCompletion Fluids EngineerDrilling Fluids Engineer
CredentialsBachelor's in Petroleum Engineering or related field; certifications like IWCF or Well ControlBachelor's in Petroleum Engineering or related field; certifications like IWCF or Well Control
Work EnvironmentOn-site at well sites, focusing on well completion operationsOn-site at drilling rigs, focusing on drilling operations
Industry UsageUsed during well completion to ensure proper placement and well integrityUsed during drilling to manage wellbore stability and fluid properties

Both roles require similar credentials and certifications, often working in the same industry environment. The main difference lies in their focus: Completion Fluids Engineers specialize in fluids used during well completion, while Drilling Fluids Engineers focus on fluids during drilling operations. Understanding these distinctions helps clarify career paths and job expectations in the petroleum industry.

More about Completion Fluids Engineer jobs

What are popular job titles related to Completion Fluids Engineer jobs?

For Completion Fluids Engineer jobs, the most frequently searched job titles are:

Completion Fluids Engineer jobs near you
Infographic showing various Completion Fluids Engineer job openings in the United States as of September 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution, with an average salary of $87,220 per year, or $41.9 per hour.

Fluids Subassemblies Manufacturing Engineer II

Long Beach, CA • On-site

Relativity Space
Aerospace Product and Parts Manufacturing • 501 - 1,000 employees
Learn more about Relativity Spaceexternal

$76K - $98K/yr

Full-time

PTO

Re-posted 2 days ago

Relativity Space rating

9.7

Company rating: 9.7 out of 10

Based on 8 frontline employees who took The Breakroom Quiz

Job description

At Relativity Space, we're building rockets to serve today's needs and tomorrow's breakthroughs. Our Terran R vehicle will deliver customer payloads to orbit, meeting the growing demand for launch capacity. But that's just the start. Achieving commercial success with Terran R will unlock new opportunities to advance science, exploration, and innovation, pioneering progress that reaches beyond the known.
Joining Relativity means becoming part of something where autonomy, ownership, and impact exist at every level. Here, you're not just executing tasks; you're solving problems that haven't been solved before, helping develop a rocket, a factory, and a business from the ground up. Whether you're in propulsion, manufacturing, software, avionics, or a corporate function, you'll collaborate across teams, shape decisions, and see your work come to life in record time. Relativity is a place where creativity and technical rigor go hand in hand, and your voice will help define the stories we're writing together. Now is a unique moment in time where it's early enough to leave your mark on the product, the process, and the culture, but far enough along that Terran R is tangible and picking up momentum. The most meaningful work of your career is waiting. Join us.
About the Team:
The Stage Manufacturing team turns design into reality, owning the build of Terran R's primary structures. This isn't about turning the same bolt every day; it's about building the systems to build the rocket. Engineers and technicians work side by side, with deep collaboration and real-time feedback, to shape how we build better and faster. With a manifest and a launch date, it's up to the team to deliver on Terran R: solving challenges in real time, optimizing for scale, and constantly improving processes. As the vehicle evolves, so will the factory, with opportunities to apply automation, machine learning, and advanced technologies. What we build here sets the blueprint for the future of scaled launch.
About the Role:
The Tube Manufacturing team is responsible for working alongside the vehicle design and test teams to develop hardware that enables Terran R reusability, working in a variety of processes to manufacture fluids systems hardware for the vehicle. The team is looking for a Manufacturing Engineer to own the following scope: advocate for scalable manufacturing in product design trades and reviews, build flow planning, large-volume part logistics, tooling design, conceptualizing & sourcing, fast-paced issue dispositions, and complex mechanical assembly work planning and execution.
  • Conceptualize, develop, and stand up a cutting-edge bending and welding work cell capable of meeting the demanding requirements of the AeonR and TerranR programs.
  • Drive assembly first build and test efforts through design for manufacturability guidance, assembly sequencing, mBOM development, build and test work order creation, and specification authoring.
  • Implement innovative tooling solutions for both new and existing products, streamlining production to support increased output while reducing operational complexity.
  • Establish and enforce standard practices, troubleshooting guides, and standardized repair procedures, with a key responsibility of reviewing and approving planning documents.
  • Streamline and optimize existing production systems, proactively identifying areas for cost reduction while enhancing overall quality and efficiency.
  • Demonstrate ingenuity and autonomy by introducing novel ideas and implementing them with utmost attention to safety, quality, and reliability, ensuring timely completion of projects.

About You:
  • Bachelor of Science degree in aerospace, mechanical, or manufacturing engineering.
  • Minimum of 2+ years of experience building and testing hardware in a manufacturing environment (may include internship experience)
  • Experience interfacing with design engineering, manufacturing, and production personnel.
  • Extensive experience managing large scope of ownership.
  • Extensive experience authoring work instructions and/or test procedures for mechanical and/or fluid assemblies.
  • Self-starter that has demonstrated the ability to define and own a process from scratch and roll out that process through clear communication to a diverse team.

Nice to haves but not required:
  • Understanding of orbital tube welding (OTW), tube bending, TIG welding, metallic fabrication, assembly procedures, and tooling design.
  • Strong understanding GD&T and drafting principles.
  • Working knowledge of typical manufacturing execution systems and quality management systems.
  • Working knowledge of rocket subsystems including structures, mechanisms, high pressure gas systems, and/or avionics.

At Relativity Space, we are committed to transparency and fairness in our compensation practices. Actual compensation will be determined based on experience, qualifications, and other job-related factors.
Compensation is only one part of our total rewards package. Relativity Space offers competitive salary and equity, a generous PTO and sick leave policy, parental leave, an annual learning and development stipend, and more! To see some of the benefits & perks we offer, please visit here.
Hiring Range:
$102,000-$156,000 USD
We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.
If you need a reasonable accommodation, please contact us at accommodations@relativityspace.com.
Please note: Relativity Space does not accept unsolicited resumes, candidate profiles, or referrals from recruitment agencies or search firms. Any unsolicited submission - via email, our website, social media, or directly to an employee - will be deemed the property of Relativity Space, and no fee will be owed absent a current, fully executed agreement with Talent Acquisition that specifically authorizes submissions for the applicable role.

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