1

Senior Investigator Jobs in Decatur, IL (NOW HIRING)

Senior Maintenance Engineer Decatur, ILThe Senior Maintenance Engineer is responsible for improving ... Lead root cause analysis investigations and develop corrective actions to eliminate recurring ...

Eaton's Electrical Sector - ARS division is currently seeking a Senior Manufacturing Engineer. This ... Performs special projects and investigations at directions of immediate supervisor. * Participates ...

Eaton's Electrical Sector - ARS division is currently seeking a Senior Manufacturing Engineer. This ... Performs special projects and investigations at directions of immediate supervisor. * Participates ...

Eaton's Electrical Sector - ARS division is currently seeking a Senior Manufacturing Engineer. This ... Performs special projects and investigations at directions of immediate supervisor Participates in ...

Eaton's Electrical Sector - ARS division is currently seeking a Senior Manufacturing Engineer. This ... Performs special projects and investigations at directions of immediate supervisor. * Participates ...

Eaton's Electrical Sector - ARS division is currently seeking a Senior Manufacturing Engineer. This ... Performs special projects and investigations at directions of immediate supervisor. * Participates ...

Military Security Officer

Mansfield, IL

$16.25 - $20.75/hr

... Investigator; career-long development through leadership courses, warfare qualifications (such as ESWS, EAWS, EXW, FMF, or NWS when assigned to qualifying commands), and senior enlisted leader ...

Military Security Officer

Seymour, IL

$16.25 - $20.75/hr

... Investigator; career-long development through leadership courses, warfare qualifications (such as ESWS, EAWS, EXW, FMF, or NWS when assigned to qualifying commands), and senior enlisted leader ...

Military Security Officer

Bethany, IL

$17 - $21.50/hr

... Investigator; career-long development through leadership courses, warfare qualifications (such as ESWS, EAWS, EXW, FMF, or NWS when assigned to qualifying commands), and senior enlisted leader ...

Military Security Officer

Maroa, IL

$16.50 - $21/hr

... Investigator; career-long development through leadership courses, warfare qualifications (such as ESWS, EAWS, EXW, FMF, or NWS when assigned to qualifying commands), and senior enlisted leader ...

Military Security Officer

Illiopolis, IL

$17 - $21.50/hr

... Investigator; career-long development through leadership courses, warfare qualifications (such as ESWS, EAWS, EXW, FMF, or NWS when assigned to qualifying commands), and senior enlisted leader ...

Military Security Officer

Farmer City, IL

$16.75 - $21.25/hr

... Investigator; career-long development through leadership courses, warfare qualifications (such as ESWS, EAWS, EXW, FMF, or NWS when assigned to qualifying commands), and senior enlisted leader ...

Military Security Officer

Macon, IL

$17 - $21.50/hr

... Investigator; career-long development through leadership courses, warfare qualifications (such as ESWS, EAWS, EXW, FMF, or NWS when assigned to qualifying commands), and senior enlisted leader ...

next page

Showing results 1-20

Senior Investigator information

See Decatur, IL salary details

$27.6K

$74.3K

$133.4K

How much do senior investigator jobs pay per year?

As of Aug 30, 2026, the average yearly pay for senior investigator in Decatur, IL is $74,306.00, according to ZipRecruiter salary data. Most workers in this role earn between $48,500.00 and $95,500.00 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.

What are popular job titles related to Senior Investigator jobs in Decatur, IL?

For Senior Investigator jobs in Decatur, IL, the most frequently searched job titles are:

What cities near Decatur, IL are hiring for Senior Investigator jobs?

Cities near Decatur, IL with the most Senior Investigator job openings:

Infographic showing various Senior Investigator job openings in Decatur, IL as of August 2026, with employment types broken down into 88% Full Time, 10% Part Time, and 2% Contract. Highlights an 94% Physical, 1% Hybrid, and 5% Remote job distribution, with an average salary of $74,306 per year, or $35.7 per hour.

Senior Maintenance Engineer Decatur, IL

ADM

Decatur, IL • On-site

$102K - $180K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 10 days ago


ADM rating

7.9

Company rating: 7.9 out of 10

Based on 186 frontline employees who took The Breakroom Quiz

76th of 366 rated logistics


Job description

Job Description Senior Maintenance Engineer Decatur, ILThe Senior Maintenance Engineer is responsible for improving asset reliability, equipment performance, and maintenance effectiveness across the facility. This role provides technical leadership for maintenance and reliability initiatives, develops preventive and predictive maintenance strategies, supports capital projects, and drives continuous improvement efforts to maximize equipment uptime, safety, and operational efficiency.The Senior Maintenance Engineer works closely with Operations, Maintenance, Engineering, and Reliability teams to identify root causes of equipment failures, implement sustainable solutions, and optimize the lifecycle performance of critical assets.ResponsibilitiesDeploy the equipment reliability strategy and ensure it is integrated and part of Performance ExcellenceDemonstrate and promote a strong commitment to safety by complying with all ADM and site-specific safety policies, procedures, and standards.Foster a culture of safety and continuous improvement throughout the maintenance organization.Provide technical expertise to improve equipment reliability, maintainability, and overall system performance.Support reliability improvement initiatives through data analysis, equipment assessments, and troubleshooting activities.Participate in Failure Modes and Effects Analysis (FMEA) and other reliability-centered assessments.Support and help execute Reliability-Centered Maintenance (RCM) methodologies on existing assets.Collaborate with Reliability Engineers to integrate preventive, predictive, and condition-based maintenance strategies into the maintenance program.Develop and implement precision maintenance practices, standards, and procedures for equipment repairs and rebuilds.Lead root cause analysis investigations and develop corrective actions to eliminate recurring equipment failures.Mentor and coach maintenance technicians, mechanics, engineers, and contractors on maintenance best practices, reliability strategies, and emerging technologies.Serve as a technical resource for troubleshooting complex equipment and system issues.Promote knowledge sharing and skills development across the maintenance organization.Develop, update, and maintain maintenance procedures, standards, and technical documentation.Ensure maintenance best practices are consistently documented and communicated.Identify opportunities for continuous improvement in maintenance processes, equipment reliability, and workforce effectiveness.Maintain effective communication between Maintenance, Reliability, Engineering, Operations, and Capital Project teams.Partner with Engineering teams to develop maintenance strategies for new and existing equipment.Support plant initiatives aimed at improving asset performance and operational excellence.Requirements15 years of experience in industrial manufacturing preferred with 10+ years of experience in R&M activitiesProficient in predictive and preventive maintenanceExcellent verbal and written communication skillsMust be proficient in Microsoft Word, Excel and Computerized Maintenance Systems, (CMMS)Knowledge of Root Cause Analysis, Cause and Effect or FMEA methodologiesStrong team player with the ability to proactively change plant cultureExperience in Vibration, Infrared, Alignment, Ultrasonic, Motor Circuit, and Lubrication analysisBackground working on rotating equipment, seals, piping, pumps, fans, blowers, and material handling equipmentExcited about this role but don't think you meet every requirement listed? We encourage you to apply anyway. You may be just the right candidate for this role or another one of our openings.ADM requires the successful completion of a background check. REF:112326BR Base pay offered may vary depending on multiple individualized factors, including market location, job-related knowledge, skills, and experience. Hourly and salaried non-exempt employees will also be paid overtime pay when working qualifying overtime hours. If hired, employees will be in an "at-will position" and the Company reserves the right to modify base pay (as well as any other discretionary payment or compensation program) at any time, including for reasons related to individual performance, Company or individual department/team performance, and market factors. The pay range for this position is expected to be between: $102,100.00 - $180,000.00 Salaried Incentive PlanThe total compensation package for this position will also include annual bonus and a long-term incentive plan Benefits and Perks Enriching the quality of life for the world begins by taking care of our colleagues. In addition to competitive pay, we support your diverse needs with a comprehensive total rewards package to enhance your well-being, including: Physical wellness - medical/Rx, dental, vision and on-site wellness center access or gym reimbursement (as applicable). Financial wellness - flexible spending accounts, health savings account, 401(k) with matching contributions and cash balance plan, discounted employee stock purchasing program, life insurance, disability, workers' compensation, legal assistance, identity theft protection. Mental and social wellness - Employee Assistance Program (EAP), Employee Resource Groups (ERGs) and Colleague Giving Programs (ADM Cares). Additional benefits include: Paid time off including paid holidays. Adoption assistance and paid maternity and parental leave. Tuition assistance. Company-sponsored training and development resources, such as LinkedIn Learning, language training and mentoring programs. *Benefits may vary for bargained locations, confirm benefit eligibility with your recruiter. #IncludingYouDiversity, equity, inclusion and belonging are cornerstones of ADM's efforts to continue innovating, driving growth, and delivering outstanding performance. We are committed to attracting and retaining a diverse workforce and create welcoming, truly inclusive work environments - environments that enable every ADM colleague to feel comfortable on the job, make meaningful contributions to our success, and grow their career. We respect and value the unique backgrounds and experiences that each person can bring to ADM because we know that diversity of perspectives makes us better, together.We welcome everyone to apply. We are committed to ensuring all qualified applicants receive consideration for employment regardless of race, color, ethnicity, disability, religion, national origin, language, gender, gender identity, gender expression, marital status, sexual orientation, age, protected veteran status, or any other characteristic protected by law About ADM At ADM, we unlock the power of nature to provide access to nutrition worldwide. With industry-advancing innovations, a complete portfolio of ingredients and solutions to meet any taste, and a commitment to sustainability, we give customers an edge in solving the nutritional challenges of today and tomorrow. We're a global leader in human and animal nutrition and the world's premier agricultural origination and processing company. Our breadth, depth, insights, facilities and logistical expertise give us unparalleled capabilities to meet needs for food, beverages, health and wellness, and more. From the seed of the idea to the outcome of the solution, we enrich the quality of life the world over. Learn more at www.adm.com.

What ADM employees say

Pay

Benefits

Hours and flexibility

Workplace

Get the full story on Breakroom