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Data Tester Jobs in California (NOW HIRING)

Visually check for leaks during test and continually review test data to ensure results are within ... Assemble and connect products for testing, operate controls, and assist in conducting routine ...

Visually check for leaks during test and continually review test data to ensure results are within ... Assemble and connect products for testing, operate controls, and assist in conducting routine ...

Data Center Project Manager

Sunnyvale, CA · On-site

$125K - $130K/yr

Works to make sure proper operating procedures maintain the integrity and availability at the data center through drafting and updating documents, testing and compliance audits. This position reports ...

Maintain and update test documentation, test cases, and test data. * Perform smoke, regression, and exploratory testing . * Verify bug fixes and provide clear, reproducible bug reports. * Assist in ...

Assembler/Tester B Full-time Irvine, CA, US Exclusive confidential search -- details shared with ... Record test results on data forms and operate basic electrical equipment and flow meters.

Records test data, applying statistical quality control procedures. Compiles and examines statistical data to determine and maintain quality and reliability. * Operate with testing instruments (e.g ...

Data Scientist

Oakland, CA · On-site

$175.35 - $214.32/hr

The role typically involves technologies such as SQL, Python, REST, machine learning, ab testing, data science.## Key Responsibilities* The Data Scientist at Earnest LLC in Oakland, CA will guide ...

Assembler/Tester B Full-time Irvine, CA, US Exclusive confidential search -- details shared with ... Record test results and maintain required documentation and data forms. * Read and interpret ...

Showing results 41-60

Data Tester information

See California salary details

$10

$37

$61

How much do data tester jobs pay per hour?

As of Aug 10, 2026, the average hourly pay for data tester in California is $37.86, according to ZipRecruiter salary data. Most workers in this role earn between $21.11 and $50.05 per hour, depending on experience, location, and employer.

What is a data tester?

A Data Tester is responsible for validating and ensuring the accuracy, quality, and integrity of data in databases, reports, or data-driven applications. They design and execute test cases, identify data anomalies, and work closely with data engineers and analysts to resolve issues. Their role ensures that data used for decision-making is accurate, consistent, and reliable.

What are the main challenges data testers typically face in their daily work?

Data Testers often encounter challenges related to dealing with large, complex datasets where inconsistencies or errors can be difficult to identify. They are also tasked with verifying data across multiple sources or migration systems, which requires a keen understanding of both business logic and data architecture. Close collaboration with data engineers, developers, and business analysts is common to resolve issues or clarify data requirements. Staying updated with evolving tools and methodologies is essential, so adaptability and continuous learning are important for long-term success in this role.

What are the key skills and qualifications needed to thrive in the data tester position, and why are they important?

To thrive as a Data Tester, you need a solid understanding of data validation, quality assurance processes, and proficiency in querying databases using languages like SQL, often backed by a degree in computer science or related fields. Familiarity with data testing tools such as Apache JMeter, Postman, or specific ETL testing frameworks, and certifications in software testing or data analytics are frequently required. Attention to detail, analytical thinking, and strong problem-solving skills are crucial soft skills for this role. These capabilities ensure the accuracy and reliability of data systems, directly supporting organizational decision-making and operational effectiveness.

How to be a data tester?

To become a data tester, you should develop strong analytical skills, proficiency in data analysis tools like Excel or SQL, and attention to detail. Gaining experience with data validation, testing methodologies, and understanding data quality standards can improve your effectiveness in the role. Certifications in data analysis or testing can also enhance your qualifications.
What are popular job titles related to Data Tester jobs in California? For Data Tester jobs in California, the most frequently searched job titles are:
What job categories do people searching Data Tester jobs in California look for? The top searched job categories for Data Tester jobs in California are:
What cities in California are hiring for Data Tester jobs? Cities in California with the most Data Tester job openings:
Infographic showing various Data Tester job openings in California as of August 2026, with employment types broken down into 41% Full Time, and 59% Contract. Highlights an 100% In-person job distribution, with an average salary of $78,746 per year, or $37.9 per hour.

Full-time

Re-posted 19 days ago


Northrop Grumman rating

8.2

Company rating: 8.2 out of 10

Based on 361 frontline employees who took The Breakroom Quiz

88th of 538 rated manufacturers


Job description

RELOCATION ASSISTANCE: No relocation assistance availableCLEARANCE REQUIRED FOR START: NoCLEARANCE TYPE: SecretTRAVEL: NoDescriptionAt Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact people's lives around the world today, and for generations to come. Our pioneering and inventive spirit has enabled us to be at the forefront of many technological advancements in our nation's history - from the first flight across the Atlantic Ocean, to stealth bombers, to landing on the moon. We look for people who have bold new ideas, courage and a pioneering spirit to join forces to invent the future, and have fun along the way. Our culture thrives on intellectual curiosity, cognitive diversity and bringing your whole self to work - and we have an insatiable drive to do what others think is impossible. Our employees are not only part of history, they're making history.

PRIMARY FUNCTION:

Prepare and connect apparatus for tests and operate test facilities and controls to perform static tests on a variety of turbine and auxiliary products where methods, sequences and tooling are normally established. Work with and/or assist journey level testers as required. Qualify, secure, and maintain a security clearance for all tester functions.

TOOLS AND EQUIPMENT:

Steam generating facility and supporting auxiliary subsystems including Johnson Matthey SCR, demin system, air ejector, Hagan controls, water brake, test stands, tooling, fixtures, pumps, valves, component test equipment. Precision gauges such as pressure, temperature and speed indicators. Electric, flow, hydraulic and vibration recorders. Manual hydraulic and electric hand tools.

MATERIAL:

Turbines, gearboxes, oil sumps, forced draft flowers, heat exchangers, turbine generators, valves and control equipment, hardware, water, oil, sulfuric acid, salt, caustic soda, treatment chemicals, rust inhibitor, preservatives, test kits, paper, rags, tape.

DIRECTION OF OTHERS: Assist and/or direct support personnel assigned to help in the performance of the test department.

WORKING PROCEDURE:

THE FOLLOWING ARE THE USUAL MAJOR JOB DUTIES BUT THIS DESCRIPTION DOES NOT PRECLUDE THE PERFORMANCE OF OTHER DUTIES BY THE INCUMBENT, NOR THE QUESTION BEING RAISED ON THE PROPER RATE FOR THE ASSIGNMENT.

Perform the duties of Assembly Helper and in addition perform the following:

  • Receive work assignment from supervision and instruction from Test Engineer.

  • Read and follow safety regulations and procedures and MI package including drawings, change notices, operation sheets, specifications and work authorizations.

  • Position and mount apparatus on pedestals and stands, assemble and bolt together components, tests plates, adapters, fixtures, hoses, fittings and piping. Cut and install gaskets as necessary and connect specified steam, water, air and oil lines and gauges for static testing turbines and auxiliary components. Disassemble after testing is completed.

  • Start, operate and monitor test facilities such as pumps, valves, low pressure steam generating equipment and associated auxiliaries (feed water system, cooling water and condensate system, etc.) heat exchangers and water treatment units to maintain the power, steam, water and oil required to static test products.

  • Operate test stand controls to maintain specified pressures, temperatures, and flows to static test a variety of products. Visually check for leaks during test and continually review test data to ensure results are within the parameters of the specification and operating policies.

  • Start and operate pickling equipment to clean various castings, fabrications and parts.

  • Assemble and connect products for testing, operate controls, and assist in conducting routine dynamic tests of products under the direction of a higher-level tester.

  • Maintain inventory of instruments and gauges and have them calibrated at specified times.

  • Observe safe operating practices and maintain familiarity with emergency shutdown procedures.

  • Make proper time charge entries and record data as required.

  • Maintain tools, equipment and work area in a clean and orderly condition.

  • Perform other work of equal or lower classification as required.

This is a Union Represented position.

BASIC QUALIFICATIONS:

  • High School Diploma or equivalent GED.

  • Experience with the operation of commercial and/or industrial fluid systems, such as fluid, hydraulic, steam, air, and Electrical Systems.

  • Minimum 3 years experience operating and monitor test facilities such as pumps, valves, low pressure steam generating equipment and associated auxiliaries (feed water system, cooling water, and condensate system, etc.) heat exchangers and water treatment units to maintain the power, steam, water, and oil required to static test product.

  • Minimum 2 years of experience adhering to OSHA safety requirements, regulations, procedures and LOTO (Lockout/Tagout).

  • Minimum 1 year of experience utilizing MS Outlook email, creating word documents, entering data excel spreadsheets.

  • Ability to obtain and maintain required U.S.Government Secret Clearance is required.

  • US Citizenship is required.

PREFERRED QUALIFICATIONS:

  • Current/active Stationary Operating Engineer license.

  • Minimum of 4 years of experience with steam plant operations either onboard a U.S. Navy vessel or within a commercial facility.

  • Active U.S.Government Secret Clearance .

  • Minimum of 4 years of experience troubleshooting and resolving large steam plant equipment.

#MPR

The application period for the job is estimated to be 20 days from the job posting date. However, this timeline may be shortened or extended depending on business needs and the availability of qualified candidates.Northrop Grumman is an Equal Opportunity Employer, making decisions without regard to race, color, religion, creed, sex, sexual orientation, gender identity, marital status, national origin, age, veteran status, disability, or any other protected class. For our complete EEO and pay transparency statement, please visit http://www.northropgrumman.com/EEO. U.S. Citizenship is required for all positions with a government clearance and certain other restricted positions.

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About Northrop Grumman

Sourced by ZipRecruiter

At Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact people's lives around the world today, and for generations to come. Our pioneering and inventive spirit has enabled us to be at the forefront of many technological advancements in our nation's history - from the first flight across the Atlantic Ocean, to stealth bombers, to landing on the moon. We look for people who have bold new ideas, courage and a pioneering spirit to join forces to invent the future, and have fun along the way. Our culture thrives on intellectual curiosity, cognitive diversity and bringing your whole self to work - and we have an insatiable drive to do what others think is impossible.

Industry

Space research administration

Company size

10,000+ Employees

Headquarters location

Falls Church, VA, US

Year founded

1939