TL;DR — What to learn first
Start here: Python and JavaScript are the two languages that unlock the most junior roles. Add HTML/CSS and SQL to cover web and data basics.
Level up: Learn Git workflows, a frontend framework (React or Vue), and write basic unit tests to separate yourself from other bootcamp grads.
What matters most: One polished project with clean code beats ten half-finished tutorials. Employers want proof you can ship.
What junior software engineer job postings actually ask for
Before learning anything, look at the data. Here’s how often key skills appear in junior software engineer job postings:
Skill frequency in junior software engineer job postings
Programming languages
The backbone of web development and the single most requested language in junior postings. You need to understand ES6+ syntax, async/await, DOM manipulation, and basic event handling.
Show JavaScript through projects, not just coursework. "Built a real-time chat app using vanilla JavaScript and WebSockets" beats "Proficient in JavaScript."
Valued for its readability and versatility. Junior roles use Python for scripting, backend APIs, and data tasks. It is also the most common language in coding bootcamps, so interviewers expect fluency.
Pair Python with a framework name (e.g., "Python (Flask)") to signal practical experience.
Expected knowledge for any web-facing role. You should be able to build responsive layouts, understand flexbox and grid, and write semantic HTML. Many juniors underestimate how much CSS matters.
More than half of junior postings mention SQL or database skills. You need SELECT, JOIN, WHERE, GROUP BY, and basic INSERT/UPDATE. Understanding how tables relate to each other is key.
Mention the database you used (PostgreSQL, MySQL, SQLite) alongside SQL.
Frameworks & tools
The most requested frontend framework for junior roles. You should understand components, props, state, hooks (useState, useEffect), and basic routing. A single well-built React project goes a long way.
Reference a deployed React project with a live link. Hiring managers click through.
Every team uses Git. You need to clone repos, create branches, make commits with clear messages, and open pull requests. Understanding merge conflicts is a common interview topic for juniors.
Comfort with the terminal separates you from candidates who only know GUI tools. Navigate directories, run scripts, install packages, and use basic Unix commands.
Not required for most junior roles, but increasingly mentioned. Understanding what containers are, pulling images, and running docker-compose gives you an edge.
Concepts & practices
Writing unit tests shows maturity. Learn pytest for Python or Jest for JavaScript. You do not need to know TDD deeply, but you should be able to write tests for your own code.
Understand what GET, POST, PUT, and DELETE mean. Be able to consume an API with fetch or axios, and build a simple API endpoint. This is a core skill for any web developer.
Arrays, hash maps, linked lists, stacks, queues, and basic sorting. You will face these in technical interviews. LeetCode Easy/Medium problems cover what most junior interviews ask.
How to list junior software engineer skills on your resume
Don’t dump a wall of keywords. Categorize your skills to mirror how job postings list their requirements:
Example: Junior Software Engineer Resume
Why this works: This format signals breadth without overclaiming. Listing specific tools (Postman, VS Code) shows real-world usage, not just classroom theory.
Three rules for your skills section:
- Only list what you’ve used in a real project. If you can’t answer a technical question about it, don’t list it.
- Match the job posting’s terminology. If they use a specific tool name, use that exact name on your resume.
- Order by relevance, not alphabetically. Put the most important skills first in each category.
What to learn first (and in what order)
If you’re looking to break into junior software engineer roles, here’s the highest-ROI learning path for 2026:
Learn HTML, CSS, and JavaScript fundamentals
Build three static websites from scratch. Then add interactivity with JavaScript — form validation, a to-do list, and an API-consuming page. Avoid frameworks until you understand the basics.
Add Python and SQL
Learn Python basics and build a simple Flask API. Connect it to a SQLite or PostgreSQL database. Practice SQL queries until JOINs feel natural.
Pick up React and Git
Build a React frontend for your Flask API. Learn Git by using it for every project — commit often, write clear messages, and push to GitHub.
Write tests and learn the command line
Add Jest tests to your React project and pytest tests to your Flask API. Get comfortable navigating your terminal for everything — no more GUI crutches.
Build and deploy a portfolio project
Create one impressive full-stack project that combines everything you have learned. Deploy it on Vercel or Railway. This single project will be your interview centerpiece.