57,000+ LEARNERS · 400+ LESSONS · 11 LANGUAGES

Start thinking like a
software engineer.

AI writes the code. Problem-solving gets you hired.
Build the skills you need to land your dream tech job.

Start learning for free See how it works

Free to start, no card needed Python, Java, C++, JavaScript and 7 more

“Now I can solve coding questions on my own” Ankit K.“Got the offer at Vanguard!” Connor H.“Landed offers from Microsoft and Uber” Cristina R.

A lesson in AlgoCademy: the step to write, the line typed in the editor and checked, Step 3 passed; then a typo, the error pointing at its line, the fix, and Step 4 passed.

AlgoCademy students have landed roles at

Individual student outcomes; your path will be your own.

FROM “I’VE SEEN THIS” TO “I CAN SOLVE THIS.”

Understand it, build it,
then solve it alone.

Think the idea through in an interactive lesson, write the code one checked step at a time, then solve it again without the steps.

Think it through.

Before any code, an interactive lesson walks you through the idea: tap the answer, predict the next value, trace a small example by hand. In Python, Java, JavaScript, C++ and C#, with a video solution when you want it explained.

The Interactive tab of Number of Islands: a 4 by 5 grid of 1s and 0s and the question “Tap the cells of the island that contains cell (0, 0)”, with two cells picked.

Build it step by step.

Write a line or two at a time, on the line the step marks. A picture shows what the new line does to the example. Take a hint or reveal the code when you’re stuck.

Step 3 of Number of Islands: “write a second for loop over every column index j”, and below it a picture titled “Step 3 adds the loop over columns j”, with the grid and the values of i and j.

Get unstuck, then solve it alone.

The AI tutor sees your code and explains what’s wrong without giving the answer away. Then turn Guided off and write the whole solution yourself, against every test.

The AI Tutor tab after a wrong step: “Your inner loop uses the number of rows again, but it needs to use the number of columns. Get that count from the length of the first row, grid[0].”

BUILD YOUR FOUNDATION. THEN RAISE THE BAR.

Learn to code. Pass interviews.
Build programs.

Every course has the same three parts. Start from your first line of code, or go straight to interview practice, then build bigger programs.

PART 1 · ABOUT 200 LESSONS

Learn to code

Variables, conditions, loops, lists, strings, functions and the basics of classes. From your first line of code to solving problems on your own.

VariablesLoopsStrings

PART 2 · ABOUT 160 LESSONS

Coding interviews

Big O first, then twenty chapters of the patterns interviews ask about, from brute force and two pointers to trees, graphs and dynamic programming.

Big OHash tablesDynamic programming

PART 3 · ABOUT 40 LESSONS

Build programs

Your own cat, grep, sort and four more command-line tools, then object-oriented programming with projects to build.

Command-line toolsClassesProjects

About 400 lessons in every coursePython · JavaScript · Java · C++ · C# · TypeScript · Go · Kotlin · Scala · Swift · Rust

Explore the curriculum

IS IT FOR YOU?

Made for two kinds
of learners.

The same lessons and steps in every language. Start where you are, and switch any time.

NEW TO CODING · PART 1

You want to learn to code.

You’ve never written code, or you tried and gave up.
You want to understand code, not copy it, now that AI writes so much of it.
You learn best by doing, with feedback on every line.

You start with Part 1: variables, loops, lists and functions, a line at a time. Your first lesson prints a line of text.

Write your first line

PREPARING FOR INTERVIEWS · PART 2

You want to pass coding interviews.

You don’t know where to start or what to study.
Solutions make sense when you read them, but you can’t build one from scratch.
New problems make you freeze, even when you know the pattern.

You start with Part 2: Big O, then twenty chapters of interview patterns, each problem broken into steps you write and check.

Try an interview problem

IF YOU’VE TRIED OTHER SITES.

How AlgoCademy
is different.

Problem sites hand you problems. Most courses teach the language. AlgoCademy teaches the part in between: getting from a problem to working code.

Tried LeetCode and got stuck?

Every problem is broken into small steps you write and check, with a picture of what each step does. You never face an empty editor alone.

Finished a course but can’t solve problems?

Part 2 starts from Big O and works through the patterns interviews ask about, one problem at a time, in the language you already know.

Watched solution videos that didn’t stick?

You write every line yourself, and the tests check it before the next step appears. The video is there when you want the idea explained.

REAL PEOPLE. NEW CONFIDENCE.

From practice
to job offers.

From getting unstuck to taking the next career step. Here’s how students describe their experience.

Built by engineers from
Facebook and Amazon.

Learn from instructors whose experience spans software engineering, competitive programming, and years of helping others learn.

SOFTWARE ENGINEER & INSTRUCTOR

Andrei Chiriac

Andrei has worked at Amazon and Keystone and earned a bronze medal at the Central European Olympiad in Informatics. Since 2015, he has coached students for programming competitions and coding interviews.

LinkedIn YouTube

FOUNDER & SOFTWARE ENGINEER

Mircea Dima

Mircea has worked at Facebook, Adobe, Ubisoft, and startups. His engineering experience includes autocorrect, swipe typing, and music recommendations, alongside more than a decade of programming and interview coaching.

CURIOSITY WELCOME.

Questions before
you start.

Still wondering about something?
Ask the AlgoCademy team ↗

Is AlgoCademy right for beginners?

Yes. Part 1 of every course starts from your very first line of code and takes you to solving problems on your own. You don’t need a Computer Science degree.

Will this help me prepare for coding interviews?

Part 2 covers the patterns behind the questions top tech companies ask, from two pointers to dynamic programming. You practice reasoning through problems and writing clean solutions. Your results depend on your preparation and individual circumstances.

Which programming languages can I use?

Python, JavaScript, Java, C++, C#, TypeScript, Go, Kotlin, Scala, Swift and Rust. Every course has the same lessons, and your progress is shared between them.

How are interactive lessons different from videos?

You build the solution yourself, a line or two at a time, and the lesson’s tests check every step before the next one appears. The video solutions are there when you want the idea explained.

Is there an AI tutor?

Yes. The AI tutor sits next to every lesson and knows the problem, the step you’re on and your code, so you can ask why a check fails or what to try next. Plus and PRO members get unlimited tutor help.

Can I learn at my own pace?

Yes. Everything is available from day one, with no weekly drip. AlgoCademy remembers where you stopped, and you can go back to any lesson or step.

Can I use it on my phone?

Yes. Lessons work in your phone’s browser, though a keyboard makes writing code easier.

Can I try it before subscribing?

Yes. Part of every course is free, including a set of coding interview questions, and you don’t need a card. PRO yearly also starts with a 7-day free trial. See the plans.

ONE SMALL STEP TOWARD YOUR NEXT BIG THING.

Your next breakthrough
starts with a little practice.

Open a lesson. Try an idea. See what clicks.

Start learning for free 400+ lessons · 11 languages · Free to start

Start thinking like asoftware engineer.

Understand it, build it,then solve it alone.