The Complete Guide to Greenhouse Resume Optimization
If you're applying to tech companies, startups, or any fast-growing organization in 2026, your resume is almost certainly going through Greenhouse.
Read article โIf you've ever spent 30 minutes crafting a cover letter for a job application, you've probably wondered whether an ATS system actually reads it -- or whether it disappears into a digital void the moment you click submit. It's a fair question, and the answer matters for how you spend your time during a job search.
The short answer: most applicant tracking systems do store your cover letter, and some can parse text from it, but cover letters are rarely used in the automated screening and ranking that determines whether a recruiter sees your application. Your resume does that heavy lifting. But that doesn't mean cover letters are pointless -- far from it.
Let's break down exactly what happens to your cover letter inside an ATS, which platforms handle it differently, and how to make sure yours actually helps your candidacy.
Every major ATS handles cover letters slightly differently, but the general pattern is consistent. When you upload a cover letter alongside your resume, the ATS does one of the following:
What none of these platforms do -- and this is the critical point -- is use your cover letter as a primary input for automated screening decisions. The algorithms that decide whether you pass initial screening are looking at your resume.
Here's how cover letters are handled by some of the most common ATS platforms you'll encounter in 2026:
Workday allows applicants to upload a cover letter as a separate attachment. Recruiters can view the attachment, but Workday's parsing engine focuses on the resume. Cover letter text is not indexed for keyword matching in most configurations. Some companies disable the cover letter upload field entirely.
Greenhouse stores cover letters as attachments and displays them in the candidate profile. The platform doesn't parse cover letters for automated screening, but recruiters reviewing your profile can read them easily. Greenhouse is used heavily by tech companies, many of which have mixed opinions on cover letters.
Oracle Taleo stores cover letter uploads as attachments. In most configurations, the cover letter is not parsed or searchable. However, some Taleo implementations include a text box for cover letter content, which may be keyword-searchable within the recruiter interface.
iCIMS can parse cover letters and make the text searchable. This is one of the few major platforms where a recruiter's keyword search might surface results from your cover letter content. That said, the automated screening and scoring is still based on your resume data.
Lever treats the cover letter as a note or attachment. It's visible to everyone on the hiring team who views your profile. For companies using Lever, cover letters are often valued because the platform is popular with smaller, more relationship-focused companies.
Technically, some ATS platforms can read and index the text of your cover letter. But "reading" in the ATS context means something different from what you might expect. The system isn't evaluating whether your cover letter is well-written, persuasive, or enthusiastic. It's extracting text and making it available in a database.
The automated screening that determines whether your application advances -- the part that filters out 75% of applicants before a human looks at them -- is almost always based on your resume. The cover letter is for the human reviewer, not the algorithm.
This is a crucial distinction. Understanding how applicant tracking systems work helps you allocate your time correctly: spend 80% of your effort on the resume, 20% on the cover letter.
Just because the ATS doesn't use your cover letter for automated screening doesn't mean you should skip it. Here's why:
Multiple recruiter surveys consistently show that 40-60% of hiring managers read cover letters for candidates who make it past initial screening. The cover letter isn't your ticket past the ATS gate -- your resume is. But once you're through, the cover letter can differentiate you from other qualified candidates.
A resume is a structured document. It lists what you did and when. A cover letter lets you explain the why. Why this company? Why this role? Why now? If you're making a career change, the cover letter is where you connect dots that a resume alone can't.
When a company marks a cover letter as required in the application, skipping it or uploading your resume a second time is a guaranteed way to signal disinterest. Many hiring managers specifically look at whether candidates followed application instructions.
For roles that involve communication -- marketing, sales, customer success, consulting, writing, PR -- your cover letter is a live demonstration of your skills. A sloppy cover letter in a communications role is worse than no cover letter at all.
Career Quiver generates tailored cover letters that match each job posting's requirements. Stop spending 30 minutes on every letter -- get a targeted draft in seconds.
Get Started Free โSince some ATS platforms do index cover letter text, and since a human will eventually read it, here's how to write one that serves both audiences:
Include the key terms from the job description -- job titles, required skills, certifications -- naturally in your cover letter. On platforms like iCIMS that index cover letter text, this reinforces your keyword presence. For the human reader, it shows you've read and understood the job requirements. Our guide on finding ATS keywords applies to cover letters as well.
Plain text or a simple, single-column format. No headers, footers, graphics, or tables. Most ATS platforms that do parse cover letters use the same text extraction methods as resume parsing, which means complex formatting can cause problems.
A cover letter that simply restates your resume bullet points adds no value. Use the cover letter to provide context, explain motivation, or highlight one or two specific achievements in more depth. The recruiter already has your resume -- tell them something they can't get from it.
If the application asks you to upload a cover letter as a separate file, use the same format as your resume (PDF or DOCX, whichever the application prefers). If there's a text box for your cover letter, paste clean text without formatting artifacts.
If you know the hiring manager's name, use it. If you don't, "Dear Hiring Team" or "Dear [Company Name] Recruiting Team" works fine. Never use "To Whom It May Concern" -- it signals that you didn't try. Our guide on addressing a cover letter without a name has more specific advice.
There are situations where skipping a cover letter is the right call:
In all other cases, include one. The downside of including a decent cover letter is near-zero. The downside of skipping one when the recruiter expected it can cost you the interview.
Beyond the basics, here are specific mistakes that can cause problems in ATS-driven applications:
Think of your application as a two-part system. Your resume gets you past the automated screening. Your cover letter -- when a human reads it -- answers the question the resume can't: "Why should I spend my limited interview slots on this person?"
A strong cover letter that gets read provides one or two compelling reasons to move you forward. It might be a specific project that aligns with the role. It might be genuine knowledge of the company's challenges. It might be a clear explanation of why you're making a career move.
Whatever it is, it needs to be specific, concise, and relevant. Generic enthusiasm doesn't move applications forward. Specific evidence of fit does.
Do ATS systems read cover letters? Some can, most don't in any meaningful way. But that's the wrong question to optimize around. The right question is: "Will a human recruiter read my cover letter?" And the answer is yes -- if your resume gets you past the initial screen first.
Spend your primary effort making your resume ATS-friendly. Then write a cover letter that gives the recruiter a reason to move you to the interview pile. That's the strategy that works.
Career Quiver reads job postings, detects the hiring software, and generates a tailored resume that gets through. Start free today.
Get Started Free โIf you're applying to tech companies, startups, or any fast-growing organization in 2026, your resume is almost certainly going through Greenhouse.
Read article โWhen job seekers think about ATS, they usually think of Workday or Greenhouse. But UKG is more common than you think.
Read article โSocial media managers face a unique ATS trap: creative formatting that looks great on screen but breaks automated parsing. Here's what actually works.
Read article โ