Internship Application Checklist

A complete system for landing a competitive internship - from 12-month-ahead planning through offer evaluation. Many top programs close applications in October-November for the following summer. Start earlier than you think.

work, study, productivity

by Morris

Timeline Planning

The single most common internship mistake is starting too late. Large company programs close months before most students realize applications are open.

• Look up the exact application open and close dates for your top 5 target companies
• Build a master application calendar with open dates, deadlines, and interview windows
• Decide which term you are targeting (summer, fall co-op, spring) and check academic requirements
• Research whether your target programs have priority or early application windows
• Identify which companies recruit on-campus at your school and whether on-campus recruiting deadlines differ

Target Company Research

Apply selectively to well-researched companies rather than broadly to anything open. A targeted application to 20 companies outperforms a generic application to 60.

• Build a tiered target list: 5-8 reach, 8-12 target, 3-5 safety companies
• Find and message 2-3 recent interns from each of your top 5 target companies
• Research each company's return offer rate and where past interns ended up
• Read recent press coverage, blog posts, or research from each target company
• Compare internship compensation across your target list including housing and cost of living

Resume for Internships

An internship resume competes on potential and project work, not years of experience. Structure and specificity matter more than length.

• Keep your resume to exactly one page
• Lead with education and relevant coursework or projects since experience is limited
• Build a Projects section and treat it as equivalent to work experience
• Quantify every bullet point that can be quantified
• Add a GitHub link for technical roles and a portfolio link for design, writing, or UX roles
• Create 2-3 versions of your resume if applying across different role types
• Get the resume reviewed by your school's career center and by 1-2 alumni in your target field

Cover Letter Strategy

Most cover letters are unread or generic. A well-written one is a real differentiator - especially at smaller companies, research labs, and nonprofits.

• Research which of your target companies actually read cover letters
• Find the name of the hiring manager or recruiting contact and address them directly
• Write a first paragraph that contains at least one company-specific detail
• Keep cover letters to 250-350 words maximum
• Have a human proofread the cover letter before submitting - not just a spell checker

Portfolio and Work Samples

For design, engineering, writing, and research roles, a portfolio often matters more than any single application document.

• Build a GitHub profile with 3-5 pinned, documented repositories for technical internships
• Create a portfolio website if applying to design, content, marketing, or UX roles
• Prepare 2-3 writing samples if applying to journalism, content, policy, or research roles
• Get portfolio feedback from someone currently working in your target role

Networking for Internships

A meaningful portion of competitive internship offers come with some internal touchpoint - a referral, a conversation at an info session, or a warm introduction. Networking is not optional.

• Attend your school's career fair with a prioritized company list and a practiced 30-second pitch
• Email alumni working at your target companies through your school's alumni network
• Attend virtual or in-person info sessions hosted by target companies
• Ask for a referral only after having a real conversation with a contact
• Connect with the recruiter or hiring manager on LinkedIn after applying

Application Tracking

Applying to 20+ companies across multiple deadlines requires a system. Track everything or lose control of your pipeline.

• Build a master spreadsheet with every application, status, and next action
• Block 30-60 minutes weekly to update statuses and send follow-ups
• Send one follow-up email per application after 2-3 weeks of silence
• Withdraw from roles you are no longer interested in promptly and professionally

Interview Preparation

Internship interviews test potential more than experience. Preparation is the main differentiator between candidates with similar resumes.

• Research the specific interview format for each company before preparing
• Prepare 5-7 behavioral stories using the STAR format
• Do at least 3 mock interviews with a real person before your first real interview
• Prepare 3-5 smart questions to ask at the end of each interview
• Send a thank-you email to each interviewer within 24 hours
• Prepare for technical screens by practicing on a whiteboard or shared coding environment, not just locally

Evaluating and Accepting an Offer

Not all internship offers are equal. Evaluate what you will actually get out of it - compensation, learning, and return offer potential.

• Calculate true total compensation including stipend, housing, relocation, and cost of living
• Evaluate whether the internship is paid - and if not, whether you can afford it
• Assess the return offer rate and what past interns went on to do
• Understand your offer deadline and request an extension if you need one
• Use competing offers as leverage if you have them - politely and honestly

Pre-Internship Preparation

The window between offer acceptance and start date is an underused opportunity. Arriving prepared makes a visible difference.

• Complete all onboarding paperwork within 48 hours of accepting
• Research the specific team and projects you'll be working on
• Set up your technical environment or review relevant domain knowledge before starting
• Arrange housing and logistics at least 4-6 weeks before your start date
• Email your manager before your start date to express enthusiasm and ask what to read in advance
• Set clear goals for the internship with your manager in your first week