My First DEV.to Post: Sharing Something I’ve Been Building Solo

Source: Dev.to

Introduction

Hey everyone, this is my first time posting on dev.to, so I’m not entirely sure how this will land. I wanted to share something I’ve been building quietly for the past few months. I’m a solo founder (and honestly a part‑time everything: backend dev, product manager, QA, customer support, marketing intern… you name it). I finally pushed my product live a little while ago. It’s called Resumly, and I’d really appreciate some honest feedback from devs here because this community tends to be more grounded and less hype‑driven.

Problem

Friends and family keep asking for help rewriting their resumes. The pattern is the same: people struggle not with writing, but with “translating” their actual experience into the language job descriptions use—especially when postings are full of buzzwords or when ATS systems filter based on phrasing.

Solution

Resumly uses AI to analyze a job posting together with the user’s base resume and generate a tailored version for that specific job. The goal isn’t perfection, just saving the 1–2 hours people spend rewriting the same thing for each application. In short, it gives users a head start instead of making them start from zero each time.

Tech Stack

• Backend: FastAPI + AWS Lambda
• Database: MongoDB (getting expensive, may need to migrate)
• Frontend: React
• Auth: Amazon Cognito
• AI: Various calls to structure content, extract skills, rewrite sections, etc.

Getting the resume output to work nicely in both Word and HTML was harder than expected. Speed was also a problem initially because the flow is essentially:

scrape → parse → analyze → generate → format

Challenges of Solo Foundership

The hardest part has been constant context switching:

• One hour debugging a FastAPI route
• Next hour phrasing a button label
• Then fixing a CSS bug
• Then figuring out SEO (new respect for it)
• Then answering a customer email

Small bugs can take a long time when I’m operating on four hours of sleep. It’s fun but exhausting.

Request for Feedback

I’m posting this because I’d genuinely like feedback from devs:

• Does the idea sound useful or kind of meh?
• Are there any technical red flags you see immediately?
• Anything you wish someone had told you earlier when building a SaaS solo?

If you try Resumly and something feels confusing or doesn’t make sense, please let me know. I’m trying not to make product decisions in a bubble and know I have blind spots. Even small suggestions go a long way.

Conclusion

Thanks for reading. I didn’t mean to write this long, but once I started typing it just kept going. I’m happy to answer anything about the build, costs, stack, or anything else. If anyone else here is building something solo, I’d love to hear how you’re dealing with the ups and downs too.

Project: Resumly.ai