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Senior Investigator Jobs in Renton, WA (NOW HIRING)

Uw

Research Scientist/Engineer Senior

Seattle, WA · On-site

$168K/yr

... as a senior scientific leader within the Department of Emergency Medicine, providing advanced ... Working closely with faculty investigators, trainees, and departmental leadership, this position ...

Umoja Biopharma

Senior Medical Director

Seattle, WA

$270K - $333K/yr

Lead preparation of clinical protocols, investigator brochures, clinical sections of regulatory ... Senior Director Level: MD, MD/PhD, or equivalent medical degree. Board certification in Oncology ...

SpaceX

Sr. Platform Integrity Analyst (Starlink)

Redmond, WA · On-site

$120K - $175K/yr

We are looking for an experienced Sr. Platform Integrity Analyst, known internally as Sr. Customer ... React to investigate potential issues such as scams, fraud, and illicit goods/activities * Partner ...

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All JobsInvestigator JobsSenior Investigator JobsSenior Investigator Jobs in Renton, WA

Senior Investigator information

See Renton, WA salary details

$32.1K

$86.2K

$154.7K

How much do senior investigator jobs pay per year?

As of Sep 4, 2026, the average yearly pay for senior investigator in Renton, WA is $86,169.00, according to ZipRecruiter salary data. Most workers in this role earn between $56,200.00 and $110,800.00 per year, depending on experience, location, and employer.

What is a senior investigator?

A Senior Investigator is an experienced professional responsible for leading and managing complex investigations, often within law enforcement, corporate, or regulatory settings. Their duties typically include gathering and analyzing evidence, interviewing witnesses, compiling reports, and providing expert testimony. Senior Investigators often supervise junior staff, ensure compliance with legal procedures, and may specialize in areas such as fraud, criminal, or internal investigations. Their extensive experience enables them to handle high-profile or sensitive cases. This role requires strong analytical, communication, and leadership skills.

What does a senior investigator do?

A senior investigator manages investigations for various crimes including fraud, corruption, and organized crime. As a senior investigator, you work for the district attorney, and your primary responsibilities revolve around collaborating with law enforcement to take on these crime issues. You may have additional duties, such as interviewing witnesses and filing evidence and reports as required by the district attorney. Excellent communication skills are imperative as you’ll encounter a variety of different people on the job. While qualifications vary by state, you likely need an associate’s degree, and at least a year of experience as an investigator with the D.A. Your employer will conduct a criminal background check.

What are the key skills and qualifications needed to thrive as a senior investigator, and why are they important?

To thrive as a Senior Investigator, you need expertise in investigative techniques, analytical thinking, and a background in law enforcement or a related field, often supported by a relevant degree or certifications. Familiarity with case management systems, digital forensics tools, and legal research databases is typically required. Exceptional attention to detail, strong communication, and the ability to maintain confidentiality set top performers apart. These skills ensure thorough investigations, accurate reporting, and effective resolution of complex cases.

What are some common challenges senior investigators face when managing complex cases, and how can they effectively address them?

Senior Investigators frequently encounter challenges such as coordinating multidisciplinary teams, handling sensitive information, and navigating regulatory or legal constraints. Successfully addressing these issues requires strong leadership, clear communication, and meticulous documentation. Senior Investigators often rely on advanced investigative techniques and foster collaboration with legal, compliance, and technical experts to ensure thorough, compliant case resolution. Staying current with industry best practices and maintaining professional integrity are essential for overcoming these obstacles.

What is the difference between Senior Investigator vs Investigator?

AspectSenior InvestigatorInvestigator
Required CredentialsTypically requires a bachelor's degree, relevant certifications, and several years of experienceUsually requires a bachelor's degree, entry-level certifications, and less experience
Work EnvironmentLeads investigations, supervises junior staff, and handles complex casesConducts investigations under supervision, handles routine cases
Employer & Industry UsageUsed in law enforcement, insurance, and corporate investigationsCommon in law enforcement, private investigation firms, and regulatory agencies

The main difference between a Senior Investigator and an Investigator lies in experience, responsibilities, and leadership roles. Senior Investigators typically have more experience, handle complex cases, and supervise others, whereas Investigators focus on routine investigations under supervision. Both roles are essential in investigative fields, but the senior position involves greater expertise and leadership.

More about Senior Investigator jobs

What are the most commonly searched types of Investigator jobs in Renton, WA?

The most popular types of Investigator jobs in Renton, WA are:

What are popular job titles related to Senior Investigator jobs in Renton, WA?

For Senior Investigator jobs in Renton, WA, the most frequently searched job titles are:

What cities near Renton, WA are hiring for Senior Investigator jobs?

Cities near Renton, WA with the most Senior Investigator job openings:

Senior Investigator jobs near you
Infographic showing various Senior Investigator job openings in Renton, WA as of August 2026, with employment types broken down into 86% Full Time, 13% Part Time, and 1% Contract. Highlights an 94% Physical, 2% Hybrid, and 4% Remote job distribution, with an average salary of $86,169 per year, or $41.4 per hour.

Senior Geologist/Senior Environmental Scientist/Professional Engineer

Hydro-Environmental Technologies, Inc.

Seattle, WA • On-site

$75K - $110K/yr

Full-time

Medical, Dental, Vision, Retirement, PTO

Re-posted 15 days ago

Job description

Benefits:
  • 401(k)
  • Bonus based on performance
  • Competitive salary
  • Dental insurance
  • Flexible schedule
  • Health insurance
  • Paid time off
  • Parental leave
  • Profit sharing
  • Vision insurance

HETI has a great opportunity for a Senior Geologist/Senior Environmental Scientist/Senior Engineer with 10+ years' experience in the environmental field.
This role will be responsible for providing technical and business skills and contribute to advanced solutions in the environmental, chemical, commercial, manufacturing, government, energy, financial, insurance, and/or legal sectors. This job is 100% remote.
The candidate should have experience managing consulting assignments, must work effectively in multi-disciplinary teams, is expected to be proficient in the analysis and communication of information, and must be able to work cooperatively with agencies, organizations, and individuals to guide decision-making. The successful candidate is also expected to be proficient in all facets of project management. He/she must demonstrate collaboration with colleagues throughout the organization.
Key Responsibilities include but are not limited to:
Client Management & Communication:
  • Serve as the primary point of contact for clients and stakeholders, providing regular updates on project status and outcomes.
  • Collaborate with project teams, including environmental engineers, geologists, and technicians.
  • Communicate complex technical information to clients and stakeholders in a clear and concise manner.

Regulatory Compliance & Reporting:
  • Interact and coordinate with regulatory agencies to obtain necessary approvals, permits, and closure documentation.
  • Prepare and submit comprehensive reports, including site investigation reports, risk assessment reports, remedial action plans, progress reports, and closure reports.
  • Be current and continue to be current on environmental regulations and guidelines.

Remediation Planning/Implementation:
  • Develop and implement effective remediation plans based on the findings of site investigations and risk assessments.
  • Design and oversee the implementation of remediation strategies, which may include excavation, soil vapor extraction, groundwater treatment, in-situ bioremediation, or other appropriate methods.
  • Ensure compliance with all applicable regulations, guidelines, and permits during the remediation process.

Insurance Claim Support
  • Experience providing technical support to insurance claims professionals for environmental or energy related claims.
  • Understanding of insurance terminology and policy language.
  • Experience in assessing the source and timing of pollution events.
  • Diverse environmental consulting experience.
  • Excellent technical writing skills.

Site Assessments:
  • Manage/conduct comprehensive site investigations to identify potential sources of contamination, evaluate risks, and develop appropriate remediation strategies.
  • Collect soil, groundwater, and other environmental samples and analyze them in accordance with standard protocols and regulations.
  • Perform data interpretation, risk assessment, and modeling to determine the extent and nature of contamination and its potential impact on human health and the environment.

Quality Control:
  • Implement quality control and assurance measures to ensure accurate and reliable data collection, analysis, and reporting.
  • Conduct periodic audits and reviews of project activities to verify compliance with project plans and regulations.
  • Identify and address any deviations or discrepancies in project execution promptly.

The Ideal Candidate should have:
  • Current PE or PG license
  • Bachelor's Degree in environmental science, geology, engineering, or a related field.
  • 10+ years' experience conducting site investigations remediation and third party evaluations
  • Solid understanding of environmental regulations, guidelines, and best practices related to contaminated site cleanup.
  • Excellent project management skills, including the ability to prioritize tasks, meet deadlines, and manage multiple projects simultaneously.
  • Strong communication and interpersonal skills, with the ability to collaborate effectively with clients, regulatory agencies, and project teams.
  • Attention to detail, critical thinking, and problem-solving abilities.
  • Knowledge of environmental sampling techniques and laboratory analysis methods.

Founded in 1986, HETI is a full-service, nationwide environmental services company specializing in environmental and indoor air quality site assessment, site remediation, risk characterization, occupational health and safety services, and litigation/expert witness support. Through our network of offices throughout the U.S., we serve a variety of large and small businesses.
We are an Equal Opportunity Employer and offer a competitive benefit package including base salary plus bonus opportunities and a friendly, flexible work environment.
Flexible work from home options available.
Compensation: $75,000.00 - $110,000.00 per year
About Us
HETI is a multi-disciplinary, full-service environmental health & safety and risk management company specializing in the assessment and management of risk and liability. The tools of our trade are environmental site and indoor air quality assessments, risk characterizations, remediation technologies, emergency response services, occupational health and safety services, loss control surveys, risk management consulting, safety services, and litigation/expert witness support.
Careers
Thank you for your interest in joining HETI. We are dedicated to hiring and retaining the most qualified employees in the industry and are always searching for gifted and committed professionals to join our team.

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