01 / Intro

From no code to a six-figure offer.

TraceDev takes you from your first line of code to a six-figure offer. Learn to code, master the interview process, and get hired with a platform that shows you exactly what to do.

Launching ~30 days · Free tier + paid tiers

bubble_sort.py

running

swap →cmp 01

Live two-pointer demo · python in browser

02 / How it works

From your first line of code to a signed offer, in three steps.

Learn the language

Start from your first variable. Write real code in the browser and watch every line execute. Values change in front of you, not in your imagination.

1 for i in range(5):

2 total += i

i0total0

Master the patterns

Graduate to the data structures and algorithms that interviews are built on. See trees branch, graphs traverse, and recursion unwind step by step.

Land the offer

The job hunt, not just the coding round. Timed AI mock interviews, plus resume teardowns and recruiter-outreach coaching that get you in the door.

mock interview14:32

"Walk me through your approach before you code."

def solve(grid):▌

03 / The difference

Every other tutorial tells you what your code is doing. Ours shows you.

Most courses hand you a wall of text and a blinking cursor. You read about a hashmap, then hope you understood it. TraceDev renders your actual program state as it runs — every cell, pointer, and branch.

And the AI tutor isn't generic. It reads your specific code at your specific step. The variable that's wrong, the edge case you missed. That is the difference between memorizing a solution and being the person who can actually solve it on the whiteboard.

solution.py

1def two_sum(nums, target):
  seen = {}
  for i, n in enumerate(nums):
      need = target - n
      if need in seen:
          return [seen[need], i]
      seen[n] = i

▸ seen = {}

the visualizertarget = 10

nums

need—

seen { value → index }

{ } empty

scanning…

Available in Python at launch · JavaScript and Java tracks coming based on waitlist demand

04 / Beyond code

Understand how Uber, Stripe, Doordash actually scale.

The hardest interview rounds at the best companies aren't algorithms. They're system design. Drag the load meter to watch a single server buckle, then drop in a cache, a queue, a read replica and watch the same architecture hold at scale.

Best explored on desktop. On a phone, tap a component to add it, hit Solve for me, or drag the load slider to watch it scale.

Client

BROWSER / MOBILE

9k rps

API Server

SINGLE INSTANCE

54%

Postgres

POSTGRES 15

80%

Drag or tap to add →

Load Balancer

NGINX / HAPROXY

Distributes traffic across multiple server instances.

Autoscaling Group

2–10 INSTANCES

Adds API replicas as CPU pressure rises.

Cache

REDIS 7

Sits between API and DB. Serves hot reads in under 1ms.

Read Replica

STREAMING REPLICATION

Read-only copy. Reads scale; writes stay on primary.

Message Queue

APACHE KAFKA

Decouples writes. API enqueues; workers consume async.

Drag the LOAD slider, or drop a component to start fixing the architecture.

0/5

UberHow dispatch routes 25M+ daily rides in real time

StripeHow payment confirmations stay idempotent across retries

TwitterHow the home timeline serves a billion requests

DoordashHow order assignment balances couriers and restaurants

DiscordHow voice channels stay sub-200ms across continents

NotionHow a block-based document syncs across devices

We cover more. These are the opening set.

Written by engineers who've shipped this stuff.
Not instructors who've read about it.

05 / Get hired

The coding round is half of it. We coach the other half.

Knowing the algorithm doesn't get you the interview. Your resume does. The same engine that reads your code reads your resume, your profile, and your outreach, then tells you exactly what's weak and rewrites it with you.

From the first cold message to the final onsite, the whole job hunt is coached, measured, and specific to you, not a generic checklist.

resume_review.md · live

BEFOREResponsible for the backend API and worked on performance.

AFTERCut p95 API latency 312ms to 47ms with a Redis cache and async write path, serving 40k req/s.

Tutor: lead with the number, name the mechanism, end with scale. Recruiters skim for impact in six seconds.

Resume teardown

Line-by-line edits that turn duties into measurable impact. The AI flags the weak bullet and rewrites it with you.

Profile & LinkedIn

Headline, summary, and project framing tuned to what recruiters actually search for.

Recruiter outreach

Cold-message and referral scripts that get replies, plus who to contact and when.

Mock interviews

Timed behavioral and technical reps with feedback on signal, not just correctness.

06 / Why TraceDev

You could piece this together from free tools.

People do. Then they plateau. Here is exactly what each free option leaves on the table, and the gap we close.

ToolWhat you getWhat's missing

LeetCodethe judge

A blank editor and a pass/fail verdict.

✕No visualization. When it fails, you still can't see why.

YouTubethe lecture

Someone else solving it, once, their way.

✕You watch their code run. Never yours, never your bug.

ChatGPTthe chatbot

A generic explanation when you think to ask.

✕It can't see your screen, your state, or where you actually got stuck.

TraceDevthe platform

Learn to code, master DSA and system design on a live visualizer, then get hired with resume, recruiter, and interview coaching the whole way to a signed offer.

→Every gap above, closed. One path from your first variable to a signed offer.

07 / The opportunity

The bar is higher. The jobs are still there.

$300K+

Median total comp for an L4 / E4 engineer at Google and Meta

Source: Levels.fyi, 2026

17.9%

Projected growth in software-developer roles through 2033, over 4× the all-occupation average

Source: U.S. Bureau of Labor Statistics

$180K–$400K

Total-comp range for mid-level engineers at well-funded (Series B+) startups

Source: Levels.fyi, compiled 2026

The narrative that software-engineering jobs have disappeared isn't supported by the data. The standards have risen, the interviews are harder, and the funnel is more competitive. The opportunity hasn't shrunk. The preparation required has changed. That preparation is exactly what we build.

08 / The path

From print('hello world') to senior engineer.

YOU ARE HERE6 TIERS

01ExplorerYour first variable, loop, and function. No prior code required.You start here

02BuilderBuild small real programs. Get fluent in one language end-to-end.Unlocks: 20 lessons

03Job-ReadyCore data structures & algorithms. The interview foundation.Unlocks: DS&A track

04FAANG EntryPattern fluency: two pointers, sliding window, graphs, DP.Unlocks: 150 problems

05FAANG MidHard problems under time pressure. Mock interviews that bite.Unlocks: timed mocks

06FAANG SeniorSystem design and the senior-level signal panels look for.Unlocks: design track