28 development intern jobs at 26 companies in Middletown, CT

1w
Save
Mark Applied
Hide
Development Intern
North Haven, Connecticut, United States
OnsiteInternship
BHcare
BHcare: Provides integrated mental health and domestic violence services.
Unpaid internship, minimum 10 hours/week. Pursuing relevant degree; strong communication, organization, and Microsoft Office skills; ability to support fundraising, donor relations, events, and marketing.
Microsoft Office
3mo
Save
Mark Applied
Hide
Youth Development Intern
Wading River, New York, United States
OnsiteAll Commitments Available
Little Flower Children and Family Services of New York
Little Flower Children and Family Services of New York: Providing foster care, adoption, and developmental disability support services.
Currently enrolled in a college program related to Social Work, Psychology, Human Services, Education, or related field; strong interpersonal skills; confidentiality; reliable and punctual.
2d
Save
Mark Applied
Hide
Product Development Intern: Material Science (Part Time)
Chicopee, Massachusetts, United States
OnsitePart Time, Internship
Filtration Group
Filtration Group: Manufacturer of mission-critical filtration and separation solutions.
Enrolled in or recently graduated from textiles/materials/polymer program with ≥3.0 GPA; basic nonwoven/materials knowledge; material characterization experience; proficiency with Microsoft Excel, PowerPoint, Word, and Teams; strong analytical and communication skills.
Microsoft Excel, Microsoft PowerPoint, Microsoft Word, Microsoft Teams
1mo
Save
Mark Applied
Hide
Intern
New Haven, Connecticut, United States
$39k-$292k/yr OnsiteMultiple Commitments Available
Yale University
Yale University: Provides higher education and conducts global academic research.
Bachelor's degree or equivalent; conduct regulatory research on 1,4-dioxane, compile state-specific databases, perform comparative analysis, prepare summaries and presentations, strong organizational, communication, and computer skills.
1w
Save
Mark Applied
Hide
Venue Programming & Event Development Intern (Summer/Fall)
Hartford, Connecticut, United States
OnsiteInternship
FC Tulsa
FC Tulsa: Professional soccer team competing in the USL Championship.
Currently enrolled student eligible for college credit; available late July–November; able to work nights/weekends; strong organization, communication, and research skills; proficient in Microsoft Word, Excel, PowerPoint.
Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Canva
2mo
Save
Mark Applied
Hide
Global Development Lead, Internal Medicine, Sr. Director (non-MD)
Collegeville or La Jolla or Bothell or Pearl River or New York City or Cambridge or Groton or United Kingdom or Walton Oaks or Collegeville
$215k-$358k/yr HybridFull Time
Pfizer
PfizerNYSE: PFE: Develops and manufactures vaccines and medicines for global healthcare
8+ YOEPhD or PharmD; 8+ years in clinical development (Phase 1-3); expertise in weight management or internal medicine; strong leadership and communication.
3d
Save
Mark Applied
Hide
Sr Manager – International Black Hawk Business Development
Stratford, Connecticut, United States
$151k-$267k/yr RemoteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
Proven experience in international business development, FMS/DCS processes, strategic planning, financial planning, customer engagement, and team leadership; ability to travel; strong communication skills.
FMS, DCS, AI
2mo
Save
Mark Applied
Hide
At-Sea Research Intern - Riverhead, NY
Riverhead, New York, United States
$19/hr OnsitePart Time, Temporary
Cornell Cooperative Extension
Cornell Cooperative Extension: Delivering research-based educational programs to New York State communities.
Part-time paid internship for at-sea data collection; fieldwork on vessels, light data entry; 24 hours/week; July–Sept; no relocation or visa sponsorship.
Data entry, Biological sampling, Marine field equipment
22h
Save
Mark Applied
Hide
Development and Communications Coordinator (P
New Haven, Connecticut, United States
$25-$30/hr HybridPart Time
Common Ground
Common Ground: Operates an environmental charter school and urban farm.
Experience in development and communications, strong writing, content creation, donor stewardship, event support, ability to manage social media and train interns; flexible schedule including nights/weekends.
Instagram, Facebook, TikTok, iOS, Android, ADP
2w
Save
Mark Applied
Hide
Computational Neuroscience Intern | Joy Lab
Bar Harbor or Ellsworth or Farmington or Sacramento or Augusta or Japan or China
$15-$31/hr OnsiteInternship
The Jackson Laboratory
The Jackson Laboratory: Conducts genomic research and produces specialized laboratory mouse models.
Undergraduate degree expected; master’s or relevant experience desirable. Experience with statistical and machine learning methods, data mining, data curation, and computational neuroscience; strong communication skills.
1mo
Save
Mark Applied
Hide
2026 Internship & Co-Op Program
Tucson or Newton or Westford or Albuquerque or Wheatfield or Brewster or Buffalo or Cleveland or Elmore or Lorain or Leesport or Reading or Lincoln or Milwaukee or Delta or Mayfield Heights
$15-$25/hr OnsiteInternship, Temporary
Materion
MaterionNYSE: MTRN: Manufactures advanced engineered materials and precision optical solutions.
Must be junior or higher enrolled in relevant STEM, business, or communications coursework; U.S. citizen or Permanent Resident (ITAR); curious, willing to learn, and able to work in team settings.
1mo
Save
Mark Applied
Hide
Oliver Wyman Actuarial - Internship - Summer 2027
New York City or Boston or San Francisco or Hartford or Los Angeles or Philadelphia or Houston or Dallas or Charlotte or Milwaukee or Washington or Chicago or Atlanta or Seattle
$1k-$2k/wk HybridFull Time, Internship
Marsh McLennan
Marsh McLennanNYSE: MRSH: Global professional services firm providing risk, strategy, and people solutions.
Undergraduate student (Class of 2028 or 2029) pursuing actuarial, math, statistics, STEM or business degree; minimum 3.5 GPA; strong analytical, communication, and problem-solving skills; interest in SOA/CAS/CFA; familiarity with Excel, R, Python, SQL, SAS, or VBA.
Microsoft Excel, R, Python, SQL, SAS, VBA
1w
Save
Mark Applied
Hide
Fall 2026, Intern/Coop: Machine Learning Researcher
East Hartford, Connecticut, United States
$37k-$82k/yr HybridPart Time
RTX
RTXNYSE: RTX: RTX provides advanced aerospace and defense systems and services.
1+ YOEPursuing MS/PhD in CS/Math/Engineering, minimum 6-month co-op,1+ years MS/PhD-level research and 1+ years ML software dev in Python; familiarity with PyTorch or TensorFlow; submit transcripts.
Python, PyTorch, TensorFlow
1w
Save
Mark Applied
Hide
Accelerated Leadership Program - Manufacturing Leadership
Danbury, Connecticut, United States
$82k/yr FieldFull Time
Schaeffler
SchaefflerFrankfurt Stock Exchange: SHA0: Manufacturer of high-precision components for automotive and industrial applications.
Bachelor's in Engineering or Engineering Technology, 3.0 GPA minimum, two co-op/intern rotations, willingness to relocate every 6 months, authorized to work in the US without sponsorship.
Microsoft Office
4w
Save
Mark Applied
Hide
Risk Advisory Services Managing Director
Tewksbury or Shelton or Bethel or West Hartford
$202k-$383k/yr OnsiteFull Time
Baker Tilly
Baker Tilly: Provides audit, tax, and consulting services to business clients.
10+ YOE5+ MgmtBachelor's in accounting or related field required; CPA or CIA required; 10+ years risk advisory/internal audit experience; 5+ years supervisory experience; proven business development and practice leadership; ability to travel as needed.
2mo
Save
Mark Applied
Hide
NBC & Telemundo Connecticut Sales Marketing Internship - Academic Year 2026-2027
Hartford, Connecticut, United States
OnsiteInternship
NBCUniversal
NBCUniversalNASDAQ: CMCSA: Produces and distributes entertainment content and theme park experiences.
Support development of multiplatform ad campaigns; create materials; source leads; coordinate production; assist in social media promotions; 200 hours/semester; Summer 2026.
2mo
Save
Mark Applied
Hide
Director of Graduate & International Student Life
Fairfield, Connecticut, United States
OnsiteFull Time
Fairfield University
Fairfield University: Private university providing undergraduate and graduate higher education programs.
7+ YOE7–10 years in higher education; master’s in student affairs or related field; experience supporting graduate/international students; program development and leadership; strong organizational and communication skills.
1w
Save
Mark Applied
Hide
Prin Regulatory Affairs Spec
North Haven or Mansfield or Mounds View or Boston or Lafayette
$120k-$180k/yr OnsiteFull Time
Medtronic
MedtronicNYSE: MDT: Developing and manufacturing medical technologies and therapies globally.
7+ YOEBachelor's degree and 7+ years regulatory experience (or advanced degree with 5+ years). Experience with 510(k), FDA interactions, international registrations, labeling and promotional material review.
1mo
Save
Mark Applied
Hide
Division Director, Technical Division, Electron-Ion Collider
Upton, New York, United States
OnsiteFull Time
Brookhaven National Laboratory
Brookhaven National Laboratory: Conducts multidisciplinary scientific research and operates national user facilities.
12+ YOE8+ MgmtBachelor's in Engineering/Physics, 12+ years of progressive technical leadership (including ≥8 years senior/executive), managing large multidisciplinary engineering organizations and $200M+ budgets, accelerator systems lifecycle experience, DOE project governance familiarity, ability to obtain UPIV credential, domestic and international travel.
1w
Save
Mark Applied
Hide
Program Representative Non-Traditional Supplier
Groton, Connecticut, United States
OnsiteFull Time
General Dynamics Electric Boat
General Dynamics Electric BoatNYSE: GD: Designs, builds, and maintains submarines for the U.S. Navy.
3+ YOESupport standing up non-traditional suppliers, guide qualifications and QMS development, collaborate with internal stakeholders; requires manufacturing/shipbuilding experience and strong communication skills.
SPARS, Oracle, Electronic Desktop, Power BI