28 engineering internship jobs at 25 companies in Defiance, OH
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Systems Engineering Intern
Fort Wayne, Indiana, United States
OnsiteInternship
Franklin ElectricNASDAQ: FELE: Designs and manufactures water and fuel pumping systems.
Pursuing a Master’s in Systems Engineering or senior-level engineering student; strong systems engineering knowledge (requirements, interfaces, DFMEA, V&V), control principles (PID), system-level debugging; preferred experience with CODESYS, C, ladder logic, MATLAB, or Python.
Lincoln ElectricNASDAQ: LECO: Manufacture welding products and automated joining systems globally.
High school diploma/GED or trade school attendance; pursuing a technical or bachelor's degree; familiarity with quality objectives, design and development, and commitment to company values.
Web Industries: Provides precision material converting and contract manufacturing services.
Pursuing a B.S. in mechanical engineering (min. 3 years college), prior manufacturing co-op/internship required, U.S. citizenship required, strong communication, problem-solving, and data analysis skills.
SME: Professional consulting engineering firm specializing in geosciences and environment.
College coursework in civil engineering preferred; requires a valid driver's license, U.S. driving experience, good driving record, computer literacy, physical ability to lift 50–60 pounds, and outdoor construction-site work.
Anna or Marysville or Raymond or East Liberty or Russells Point or Lincoln or Timmonsville or Swepsonville
OnsiteMultiple Commitments Available
HondaNYSE: HMC: Manufactures and develops motor vehicles, engines, and mobility products.
0+ YOELegally authorized to work in the U.S. without sponsorship; pursuing Mechanical Engineering or related field; minimum 2.5 GPA; sophomore or above; 10+ weeks at 40 hrs/week; valid U.S. driver’s license; own transportation; enrolled in bachelor’s or master’s degree program
Piston Group: Tier 1 manufacturer of automotive components and assemblies.
Pursuing an Associate's or Bachelor's in Engineering or related field; strong communication; ability to create procedures; able to lift up to 20 lbs; intermediate Microsoft Office skills.
City of Fort Wayne: Provides municipal government services and public infrastructure management.
Currently pursuing a Bachelor's in Engineering or Engineering Technology; ability to lift up to 50 lbs; valid driver's license; strong attention to detail and problem-solving; ability to work independently and in teams.
Microsoft Excel, Microsoft Word, Microsoft PowerPoint
Custom Mechanical Systems: Mechanical contractor for industrial and federal construction projects.
Pursuing Construction Management, Architecture, Mechanical or Civil Engineering; U.S. citizenship required. Assist with project documentation, submittal registers, RFIs, change orders, budgeting, and project closeout tasks.
Engineering/Construction Management Internship/Co-op - Defiance, Ohio - Spring 2027
Defiance, Ohio, United States
OnsiteInternship
E.S. Wagner Co.: Constructing highways, bridges, and heavy civil engineering infrastructure.
Undergraduate student pursuing construction-related studies, interest in construction, communication skills, Microsoft Office familiarity, leadership and teamwork; ability to assist in field engineering, estimating, and office tasks.
Construction Management Internship/Co-op - Fall 2026 – Toledo, OH
Toledo, Ohio, United States
OnsiteFull Time, Internship
The Douglas Company: General contractor specializing in senior living and multifamily construction.
Bachelor's degree in progress in Construction Management, Civil Engineering, or Construction Engineering Technology required; able to work in Toledo; real-world construction project support experience through internship/co-op.
Intern/Co-op - Refining Chemical Engineering Fall 2026
Findlay or El Paso or Anacortes or Wilmington or Martinez or Owensboro or Canton or Canonsburg or Mandan or Salt Lake City or Dickinson or Robinson or Detroit or St Paul Park or Catlettsburg or Garyville or Texas City or Kenai or San Antonio
$33-$42/hrOnsitePart Time, Internship
Marathon PetroleumNYSE: MPC: Refines and markets petroleum products and renewable fuels.
Must be majoring in Chemical Engineering, strong academic performance, concurrently enrolled in a degree program, valid driver's license, authorized to work in the US indefinitely, availability for multiple co-op/term assignments preferred.
DOW SkillBridge - Field Engineer I, II & III - Solar & BESS
Austin or Ohio City
OnsiteContract, Internship
MasTecNYSE: MTZ: Provides infrastructure engineering, construction, and maintenance services.
DoD Skillbridge eligible internship; prior construction/engineering education; SWPPP knowledge; MS Office proficiency; strong safety and communication skills.
Microsoft Office, Construction management software
Troy or Michigan or Indiana or Warsaw or Fort Wayne
OnsiteFull Time
EDAGXetra: ED4: Engineering services for vehicle development and smart factory solutions.
Bachelor's in engineering, direct exposure to automotive manufacturing (co-op/internship/early experience), proficiency in AutoCAD 2D, Microsoft Excel and Access, willingness to travel regularly to Indiana; no sponsorship available.
Digital Transformation Intern (1st Shift) - Fall 2026
Walbridge, Ohio, United States
$22-$25/hrOnsiteFull Time
First SolarNASDAQ: FSLR: Designs and manufactures thin-film photovoltaic solar modules.
Engineering or data-analytics background, proficiency in Excel, experience with JMP/statistical software or SQL/Python a plus, strong communication and root-cause analysis skills; internship 3–6+ months.
Microsoft Excel, JMP, SQL, Python, Microsoft PowerPoint
Cenovus EnergyToronto Stock Exchange: CVE: Integrated energy producing oil and natural gas.
Enrolled post-secondary student or registered in a co-op/internship program, legally authorized to work in the U.S. for the term, available January 2027, strong analytical and Microsoft Excel skills; majors in engineering, accounting/finance, or supply chain preferred.
Regal RexnordNYSE: RRX: Manufacturer of electric motors and motion control systems.
Pursuing a bachelor’s in mechanical or electrical engineering; no experience required; GPA 3.0+; basic 3D modeling (SolidWorks preferred); strong communication; self-directed; able to learn tools.
Fort Wayne or Indianapolis or Detroit or South Bend or Columbus or Cincinnati or Phoenix or Casa Grande or Saginaw
OnsiteInternship
Miller Electric Company: Provides electrical and technology infrastructure construction and maintenance services.
Must be enrolled in high school or university, 18+, proficient with Microsoft Office, willing to learn AutoCAD/REVIT, complete safety training, and demonstrate strong communication and reliability.
AutoCAD, REVIT, Microsoft Word, Microsoft PowerPoint, Microsoft Excel
Architecture Co-op/Intern (Part-Time) - Spring 2027
Toledo or Columbus
$20-$23/hrOnsitePart Time, Internship
SSOE Group: Provides architecture, engineering, and construction management for industrial facilities.
Pursuing a NAAB-accredited bachelor’s or master’s in architecture, Revit required, 3D rendering and Adobe suite skills, strong communication, leadership, organization, and multitasking.
MichelinEuronext Paris: ML: Manufactures tires and provides digital mobility services and guides.
1+ YOE1+ years technical experience (internship/Co-op/military acceptable); BS in computer-related field preferred; experience building and maintaining scalable data systems, data quality, and collaboration; OSI/AVEVA PI systems a plus.