80 development intern jobs at 49 companies in Middletown, DE

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Professional Development Intern
Havertown, Pennsylvania, United States
HybridInternship
Child Guidance Resource Centers
Child Guidance Resource Centers: Mental health and developmental services for children and families.
Seeking bachelor- or master-level interns to support development of training materials, marketing, program evaluation, and facilitation of in-person and virtual learning; unpaid internship.
Microsoft PowerPoint
3w
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Operations & Organizational Development Intern
Philadelphia, Pennsylvania, United States
$19-$22/hr HybridPart Time, Internship
Delaware Valley Regional Planning Commission
Delaware Valley Regional Planning Commission: Metropolitan planning organization for the greater Philadelphia region.
Supports organizational development projects, coordinates meetings, researches learning opportunities, maintains intranet content, and assists employee engagement activities. Requires college enrollment or recent college experience and interest in OD/HR/L&D.
Google Suite
1mo
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Research & Development Intern (Chemistry/Metallurgy)
Baltimore, Maryland, United States
$20-$40/hr OnsiteFull Time, Internship
Uplift Geosystems
Uplift Geosystems: Building electrochemical reactors for sustainable battery metal refining.
Currently enrolled in a relevant degree program; comfortable working in an onsite lab; safety-first mindset; perform sample prep, mineral separation, leaching experiments, and data analysis.
Microsoft Excel, Origin, MATLAB, Python, mass spectrometry, inductively coupled plasma mass spectrometry, atomic emission spectrometry, X-Ray diffraction, titration, mills, sieves, furnaces
1w
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Business Development & Capture Intern (Remote Opportunity)
Philadelphia or Charleston or San Antonio or Miami
$40/hr RemotePart Time, Internship
VetsEZ
VetsEZ: Digital transformation and healthcare IT services for government agencies.
Must be a graduate student (MBA or related Master's) graduating in 6-12 months, reside in continental US, strong analytical and communication skills, proficiency with Microsoft Office, and ability to obtain government clearance.
Microsoft Office, Microsoft Excel, Microsoft PowerPoint, Microsoft Word, Microsoft Copilot, ChatGPT, Salesforce
2w
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Youth Development Intern Preschool - Towson
Towson, Maryland, United States
OnsiteInternship
YMCA of Central Maryland
YMCA of Central Maryland: Providing health, fitness, and youth development programs to communities.
Current enrollment in early childhood education program; ability to follow supervision and communicate clearly; complete internship assignments; meet physical and training requirements.
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Associate Director of Development, International
Philadelphia, Pennsylvania, United States
$77k-$105k/yr HybridFull Time
University of Pennsylvania
University of Pennsylvania: Research university offering higher education and healthcare services.
3+ YOEBachelor's degree and 3+ years development experience, proven solicitation of six-figure gifts, knowledge of international cross-border giving, valid passport and U.S. driver's license, extensive international travel, strong communication and planning skills.
1mo
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Associate Director of Development, International
Philadelphia, Pennsylvania, United States
$77k-$105k/yr HybridFull Time
University of Pennsylvania
University of Pennsylvania: Provides higher education and conducts academic research.
3+ YOEBachelor's degree and 3+ years development experience; experience soliciting six-figure gifts and international fundraising; extensive international travel; passport and U.S. driver's license required; strong communication and planning skills.
1d
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AGRIBUSINESS DEVELOPMENT COORDINATOR
Cecil County, Maryland, United States
$29-$41/hr OnsiteFull Time
Cecil County Government
Cecil County Government: Local government administration providing public services and infrastructure management.
Application deadline 2026-08-11. Salary range $29.04–$40.90. Open to internal and external candidates.
4w
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Director of Business Development
Linthicum or Baltimore or Virginia
$195k-$292k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Develops and manufactures advanced aerospace, defense, and space systems.
10+ YOE5+ MgmtUS citizen with active DoW Top Secret clearance, Bachelor\u0002s degree and 10+ years related experience (8+ with Masters), 5+ years leading teams, deep USG acquisition and international business development expertise, executive briefing ability.
6d
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Research Intern
Philadelphia, Pennsylvania, United States
OnsiteInternship, Temporary
Jefferson
Jefferson: Providing healthcare services and academic programs in Pennsylvania.
Temporary internship to support research and clinical academic activities at a university health system; rotating work schedule; benefits available.
2mo
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Senior Director, Clinical Development
Conshohocken, Pennsylvania, United States
$330k-$403k/yr OnsiteFull Time
Madrigal Pharmaceuticals
Madrigal PharmaceuticalsNASDAQ: MDGL: Develops and commercializes therapeutics for metabolic dysfunction-associated steatohepatitis.
10+ YOE5+ MgmtMD or MD/PhD; 10+ years clinical development; board certification in Internal Medicine, Gastroenterology, Endocrinology, Hepatology or related field; strong regulatory leadership; trial design and cross-functional leadership.
Clinical Development Tools, IND/MAA Submissions, Data Monitoring Committees, PK/PD, Biomarker Analysis
1w
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Software Developer Intern- Drexel Co-op US
Philadelphia, Pennsylvania, United States
$53k-$88k/yr HybridInternship, Full Time
AVEVA
AVEVA: Industrial software for engineering and operational performance management.
Currently enrolled in a BS/MS/PhD in CS or related, GPA≥3.0, software development experience in modern languages, U.S. work authorization required, drug screen and background check required.
C++, C#, HTML, JavaScript, Agile
4w
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2027 Engineering Corporate Intern Program - Product Development Track
Mossville or Brooklyn Park or Decatur or Fort Worth or Lafayette or Pontiac or Kennett Square or Pittsburgh or El Reno or Schertz or Rapid City or Griffin or Denison or Houston or East Peoria or Clayton or West Fargo or Alpharetta or Peoria
$25-$43/hr OnsiteFull Time, Internship
Caterpillar
CaterpillarNYSE: CAT: Manufactures construction equipment, mining machinery, and industrial engines.
Full-time 12-week, 40-hr/wk internship for students pursuing an ABET-accredited engineering degree; 3.0+ GPA, 24+ semester hours completed, ability to relocate/commute, engineering fundamentals and analytical skills.
ANSYS, MATLAB, Simulink, C, C#, C++, Python, Visual Basic, CFD, FEA, HIL, SIL
3mo
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Project Management Intern
Concordville or Newtown Square
OnsiteInternship
LaFrance
LaFrance: Designs and manufactures custom on-product branding and nameplates.
R&D internship role in an Innovation Lab; fall 2026 start; responsibilities include supporting materials research, data collection, and collaboration with engineers.
2mo
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Intern - State Farm Agent Team Member
Philadelphia, Pennsylvania, United States
$13-$20/hr OnsitePart Time
Jeff Gottesman State Farm Agency
Jeff Gottesman State Farm Agency: Independent insurance and financial services agency offering personalized coverage and financial planning.
Part-time internship with focus on lead development, appointment scheduling, and assisting clients; bilingual Spanish or Russian preferred; strong interpersonal, communication, and self-motivation skills; detail oriented.
1mo
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Donor Liaison Intern
Philadelphia, Pennsylvania, United States
$20/hr HybridMultiple Commitments Available
American Friends Service Committee
American Friends Service Committee: Provides global humanitarian assistance and advocates for social justice.
1+ YOEHigh school diploma required, some college preferred. 1+ year experience in development/communications/outreach, Microsoft Office proficiency, ability to work evenings/weekends and travel, strong communication and organizational skills.
Microsoft Office
1mo
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Sales Development Representative
Philadelphia or New Jersey or Horsham
$43k-$71k/yr RemoteFull Time
RELX
RELXLondon Stock Exchange: REL: Provides information-based analytics and decision tools for professional customers.
1+ YOEApproximately 12 months B2B internal sales experience (SaaS/software/data preferred); strong written/verbal communication; proficiency with Salesforce, Microsoft Office, HubSpot, LinkedIn, ZoomInfo; target-driven and collaborative.
Salesforce, LinkedIn, ZoomInfo, HubSpot, Microsoft Office
1mo
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Sales Development Representative
Philadelphia or New Jersey or Horsham
$43k-$71k/yr RemoteFull Time
RELX
RELXLondon Stock Exchange: REL: Provides professional data analytics, scientific publishing, and trade exhibitions.
1+ YOEB2B internal sales experience (~12 months) in SaaS/software preferred; strong written/verbal communication, phone outreach, target-driven, proficiency in Salesforce and Microsoft Office, familiarity with HubSpot, LinkedIn, ZoomInfo, and AI in sales.
Salesforce, LinkedIn, ZoomInfo, HubSpot, Microsoft Office, AI
1mo
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Sales Development Representative
Philadelphia or New Jersey or Horsham
$43k-$71k/yr RemoteFull Time
LexisNexis
LexisNexisNYSE: RELX: Provides legal research and business analytics software solutions.
1+ YOEApproximately 12 months B2B internal sales experience (SaaS preferred); strong written and verbal communication; ability to engage prospects by phone; Microsoft Office and Salesforce proficiency; familiarity with HubSpot, ZoomInfo, LinkedIn, and metrics-driven work.
Salesforce, LinkedIn, ZoomInfo, HubSpot, Microsoft Office
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OT Intern- Rosedale/Belcamp
Rosedale or Belcamp
OnsiteInternship
Mosaic Community Services
Mosaic Community Services: Provides outpatient mental health and addiction recovery services.
Unpaid level I fieldwork for students enrolled in an accredited occupational therapy program affiliated with Sheppard Pratt or Mosaic. Must work under OT supervision, perform screenings/assessments, lead OT groups, document care, and develop entry-level clinical skills.