Mid Full-stack at Toast

Full-stackMidOutcome unknown◆ Commonly asked· 2023

A mid fullstack loop. Pragmatic questions — more real-world than pure puzzles.

The loop · 5 rounds

Round 01 · 3 questions

DSA / Coding

Data structures & algorithms on a whiteboard or shared editor.

Maximum product subarray.
MidMedium◆ Commonly asked
#array#dp
PracticeLeetCode GeeksforGeeks
Find median from data stream.
MidHard◆ Commonly asked
#heap#design
PracticeLeetCode GeeksforGeeks
Valid Parentheses — check balanced brackets.
MidEasy◆ Commonly asked
#stack#string
PracticeLeetCode GeeksforGeeks

Round 02 · 2 questions

Machine Coding

Build a working component or service under time pressure.

Implement a JSON config loader with env overrides.
MidEasy◆ Commonly asked
#config
PracticeGeeksforGeeks Search
Build a mini ORM query builder (select/where/join).
MidHard◆ Commonly asked
#parsing#sql
PracticeGeeksforGeeks Search

Round 03 · 1 question

Low-Level Design

Object-oriented / low-level design of a focused module.

Design a chess game (pieces, moves, board).
MidHard◆ Commonly asked
#oop
PracticeGeeksforGeeks Search

Round 04 · 3 questions

Tech Deep-Dive

Deep questions on your core stack and fundamentals.

localStorage vs sessionStorage vs cookies — when to use each?
MidEasy◆ Commonly asked
#browser
PracticeGeeksforGeeks Search
Explain how you handle concurrency / race conditions.
MidHard◆ Commonly asked
#concurrency
PracticeGeeksforGeeks Search
Explain how CSS-in-JS differs from utility CSS.
MidEasy◆ Commonly asked
#css
PracticeGeeksforGeeks Search

Round 05 · 2 questions

Behavioral / HR

Values, collaboration, and past-experience (STAR) questions.

Describe a time you improved a process or tool for your team.
Mid◆ Commonly asked
#ownership#star
Tell me about a time you went above and beyond for a customer.
Mid◆ Commonly asked
#customer#star

◆ This experience is composed from commonly reported questions for this role and level. Real, individually-shared interviews will be layered in over time.