How to Fill Out Your Cover Letter Experience Section in 30 Minutes Using the CareerOn Mobile App: A Step-by-Step Guide

If you're unsure where to start filling in your cover letter experience section, you can use the CareerOn job preparation platform's mobile app to create concrete projects directly while simultaneously leaving evidence that hiring managers want. This article is based on the "three-step method of understanding through books, executing through apps, and proving through cover letters" developed by Shim Jae-woo, CEO of SB Consulting, through his book *Project Experience is Employment Competitiveness* and CareerOn platform's workbook and mobile app.

Generally, students write their cover letter experience sections abstractly or leave them blank due to "lack of project experience." However, the four beginner projects on the CareerOn job preparation platform are designed so that anyone can start them immediately on campus or in daily life, and the process of recording step-by-step in the mobile app itself creates concrete experiences to write in your cover letter.

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The most important thing when first opening the CareerOn job preparation platform's mobile app is "starting quickly." The app is designed on the principle of "starting your first practice during the first 15 minutes," minimizing the time from project selection to first input. This prevents job seekers from wasting time overthinking when writing their cover letter experience section.

The first step is "selecting a project that fits you." CareerOn platform offers four beginner projects. The first is solving inconveniences in campus life (individual project), the second is improving customer experience at local shops (team project), the third is an AI-assisted job information organization tool (individual project), and the fourth is an AI guidance workflow for event operations (team project). Each project is structured to experience the complete cycle of "problem recognition → alternative development → verification → results" to write in your cover letter.

After selecting a project in the mobile app, entering the "workspace" is the second step. The workspace is the app's core work area where you read and answer questions at your current stage out of 52 steps. Questions are designed to clarify "what you need to observe at this stage," so the act of answering itself becomes evidence for your cover letter experience section.

* Project selection criteria: Choose something you can execute right now. Don't waste time looking for a "better" topic.
* Amount of first input: About 50-200 characters per question is sufficient. Starting is more important than perfection.
* Using AI Coaching: After completing your first input, press the "AI Coaching" button to receive feedback based on CEO Shim Jae-woo's analysis.

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The reason cover letter experience sections are weak is because there are no "concrete facts." Generally, students try to write "abstract expressions showing abilities," so "what did this student actually do?" doesn't come through. The CareerOn mobile app's 52-step question structure designs this in reverse. By recording "what you actually saw → what you judged → what you executed → what results you got" at each step, completing the input itself becomes the basis for cover letter sentences.

For example, the initial stage of the "solving campus inconveniences" project is "interviewing and organizing inconveniences experienced by 5 or more students on campus." The app's input box has the question "What are the 3 inconveniences you discovered?", and carefully recording your answer here becomes evidence of "problem recognition" in your cover letter. The next step is "thinking of 3 alternatives to solve that inconvenience and explaining why you chose 1." Your answer at this step becomes evidence for the "judgment ability" sentence in your cover letter.

Proceeding this way, by the time you complete the project's 52 steps, all the concrete materials you need to strongly fill 3-4 lines of your cover letter experience section remain in the app. When writing your cover letter, simply transfer from "app records → cover letter experience section," so a cover letter relying on concrete facts rather than abstract expressions from start to finish is completed.

* Meaning of step-by-step recording: Each input records "your judgment," not moving content proposed by AI.
* Importance of field verification: When answering app questions, clearly distinguish and record "what you saw on site" and "what AI proposed."
* Cover letter connection timing: After project completion, reading "Part 5: Connecting Project Experience to Employment Competitiveness" in the app's "reflection" section provides a cover letter writing guide.

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To effectively use the CareerOn platform as a busy job seeker, you need to quickly repeat "reading book → app input → execution → feedback reflection." The book *Project Experience is Employment Competitiveness*, Volume 1 "Starting and Executing — Beginner Project Edition," is designed to break down this routine into 30-minute units.

The specific 30-minute routine is as follows. The first 30 minutes are "reading the relevant book chapter + understanding the relevant step's questions in the app." *Project Experience is Employment Competitiveness* provides pages after each question explaining "why this question is asked" and "how to answer it." After reading this, opening the app makes abstract questions clear as concrete execution tasks. The next 30 minutes are "observation or interview execution on site." For solving campus inconveniences, meet and interview 5 students; for improving local shops, observe 3 customers' purchase processes. The final 30 minutes are "recording in app + receiving AI coaching."

Repeating this routine twice a week, you can complete one beginner project within 4-5 weeks, and the result directly supports one cover letter experience section strongly. What's particularly important is "the app's AI coaching." By receiving feedback based on CEO Shim Jae-woo's experience, you can immediately know whether your records are "sufficient evidence to write in a cover letter" or what points need more concrete development.

* Book reading is for "understanding" only: Don't write directly on the book's worksheet; input directly into the app after understanding.
* Interviews/observations must be done directly: Reference AI-proposed questions or observation points, but you must do this yourself on site.
* Feedback reflection cycle: After receiving AI coaching, modify execution content and proceed to the next step.

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The four beginner projects provided by the CareerOn job preparation platform each demonstrate different competencies in your cover letter. Strategic selection can greatly increase the impact of your cover letter experience section.

Type A-1: Solving Campus Life Inconveniences (Individual Project) most strongly shows "problem discovery ability." Since the entire process of observing actual student inconveniences, selecting 1 of 3 inconveniences, and creating solutions is recorded, you can concretely prove "user-centric thinking" in your cover letter.

Type A-2: Improving Customer Experience at Local Shops (Team Project) simultaneously demonstrates "collaboration ability" and "business understanding." Since the entire process of meeting customers with teammates, coordinating with shop owners, and executing improvements is recorded, you can specifically write "stakeholder coordination" ability in your cover letter.

Type B-1: AI-Assisted Job Information Organization Tool (Individual Project) shows "technology utilization ability in the AI era." Since the experience of using AI tools like ChatGPT or Gemini to systematically organize job information is recorded in your cover letter, from a hiring manager's perspective, "this student knows how to apply AI to business problem-solving."

Type B-2: AI Guidance Workflow for Event Operations (Team Project) demonstrates "process design ability" and "technology understanding." The experience of designing an AI workflow with your team that automatically answers questions asked by event participants becomes evidence for your cover letter experience section.

* First project recommendation: Start with Type A-1 (solving campus inconveniences). It has the highest accessibility and fastest completion time.
* Selection by application field: For IT/data positions, Type B is recommended first; for planning/marketing, Type A is recommended.
* Consecutive projects: After completing your first project, starting a second project (different type) strengthens 2 or more cover letter experience sections.

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Cover letter experience sections are usually weak because "your judgment" and "AI or others' suggestions" are not distinguished. The CareerOn mobile app's AI coaching function directly checks this. After inputting in the app and pressing "AI Coaching," feedback based on CEO Shim Jae-woo's analysis appears, which judges "whether your records are sufficient evidence for a cover letter."

The AI coaching feedback has three patterns. The first is "be more specific," which means your answer is still abstract for a cover letter. For example, if you recorded "discovered student inconveniences," it means you should revise it more specifically as "what inconvenience did whom mention." The second is "clarify your judgment," which means you're just following AI or book guidelines without your own opinion. In this case, you should record why you chose or rejected that option. The third is "good, proceed to the next step," which means your records are sufficiently specific and your judgment is clear.

However, AI coaching alone is insufficient. Field verification is essential. Each time you answer app questions, you must clearly distinguish and record "is this something I directly saw, or something AI or the book suggested?" For example, when recording "3 student inconveniences" in the "solving campus inconveniences" project, mixing "inconveniences mentioned by 5 students I interviewed" and "inconveniences presented as examples in the app" weakens your cover letter's evidence. The appendix "Guide to Checking Problems When Using Book and App Together" in the app has this distinction method organized.

* Purpose of AI Coaching: Verify that your records are concrete evidence for a cover letter.
* Core of feedback reflection: When you receive "be more specific" feedback, retrace your memories and record them more specifically.
* Principle of field verification: You must directly meet at least 3 or more people per step, or directly observe at least 3 or more times for sufficient cover letter evidence.

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When you complete all 52 steps of a project in the CareerOn mobile app, the "Part 5: Connecting Project Experience to Employment Competitiveness" section is activated. This section has 4 chapters. The first is "confirm and reflect on project completion," organizing how your initial expectations differ from actual results. The second is "organize your contribution and competencies based on evidence," selecting 3-4 items from the 52 steps' records where your judgment and execution are most clearly revealed. The third is "complete project records as a portfolio," organizing app records as PDF or images into portfolio materials. The fourth is "explain your experience in cover letters and interviews," providing a specific guide for writing 3-4 lines of your cover letter experience section.

The most important among these is "organize your contribution and competencies based on evidence." The app has you select 5 items out of 50 inputs where "your judgment" is most strongly revealed, and write "what you learned at this step" in 1 sentence for each. These 5 one-sentence statements become the "core sentences" of your cover letter experience section. For example, if in the "solving campus inconveniences" project, you recorded at the "interviewing 5 students" step: "I learned that group interviews reveal deeper inconveniences than individual interviews," this 1-sentence statement becomes evidence for writing "user research methodology" in your cover letter.

Organizing these 5 one-sentence statements automatically completes your cover letter experience section of 3-4 lines. The app's "Explaining Your Experience in Cover Letters and Interviews" chapter specifically shows how to weave these 5 sentences into 4 lines in cover letter format.

* When to start the reflection section: Not when completing the project, but soon after completing execution (within 1-2 weeks).
* Criteria for selecting core sentences: Select inputs where "judgments only I could make" are clearly evident.
* Cover letter sentence writing: Weave the app's 5 one-sentence statements into cover letter format, but unify terminology to "experience" rather than "project."

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Step 1: Mobile App Installation and Project Selection (5 minutes)

•Download CareerOn mobile app and log in

•Select 1 of 4 options in the "Select a beginner project that fits you" section

•Activate workspace with the "Open Project" button

Step 2: Read and Answer Questions at First Step (10 minutes)

•Enter the workspace and check the questions for "Step 1"

•Answer the question in 50-200 characters (starting is more important than perfection)

•Don't press "Next Step" yet; first get "AI Coaching"

Step 3: Reflect AI Coaching Feedback and Prepare for Field Execution (10 minutes)

•Read the AI coaching feedback and modify input if necessary

•Confirm the specific method of "activities to do on site" from the relevant section in the book

•Schedule when to meet whom or what to observe

Step 4: Field Execution and Observation Recording (1-2 times per week, 1 hour)

•Directly perform planned interviews, observations, creation, testing, etc.

•Record what you saw and heard in a notebook or phone memo

•Don't mix "what you saw" and "expectations"

Step 5: Input Field Records in App (1 time per week, 15 minutes)

•Answer the app's next questions while reviewing field records

•Must input based on "what you saw"

•Receive AI coaching again and supplement based on feedback

Step 6: Project Completion and Reflection (After completion, 30 minutes)

•"Part 5" section activates when all 52 steps are complete

•Select 5 core items in the "Organize Your Contribution and Competencies" section

•Record "1 sentence about what I learned at this step" for each item

•Write 4-line experience section according to the app's "Cover Letter Guide"

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Real Example: Cover Letter Experience Section from Campus Inconvenience Solving Project

A college student conducted the "solving campus life inconveniences" project over 4 weeks. After recording 52 steps in the app, they wrote their cover letter experience section as follows.

Project: "Creating a shared Google Sheet to solve library seat reservation inconvenience"

Experience Section (4 lines recorded in cover letter):
"I discovered inconveniences in the library seat reservation process by interviewing 5 students. After identifying that the problem wasn't manual notes but difficulty with real-time updates, I created a solution using a shared Google Sheet. After pilot operation, I collected feedback from 20 students and reflected an improvement proposal to subdivide reservation times into 15-minute intervals. The library ultimately decided to adopt it formally, and through this process, I experienced the actual problem-solving process from user research to hypothesis verification."

Every sentence in this experience section (5 interviews, Google Sheet creation, collecting 20 students' feedback, subdividing reservation times, library's official adoption) came directly from the app's 52 steps of records. Rather than writing abstractly about "problem-solving ability," it was written based on "specifically what was done," so hiring managers can very concretely assess this student's actual competencies.

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Q1. How long does it take to complete one project on the CareerOn mobile app?

A: Beginner projects have 52 steps. Conducting interviews or observations 1-2 times per week, most students complete one project within 4-5 weeks. If you do 2 rounds per week, you can finish in 3-4 weeks.