Toptal's Junior Software Engineer interview process is designed to assess foundational technical skills, problem-solving abilities, and cultural fit for early-career professionals. It typically involves multiple stages, starting with an initial screening and progressing through technical assessments and interviews.
Rounds·4
Timeline·~14d
Experience·0 - 3 yrs
Comp band·US$60000 - US$80000
Interview time·195 min
Evaluation
Preparation
Tips
Study plan
Fig · Study plan — 05 phases
01 / 05Phase 01 of 05
Weeks 1-2: Data Structures & Algorithms (Basics), Big O Notation.
Weeks 1-2: Focus on core data structures (arrays, linked lists, stacks, queues, hash maps) and basic algorithms (sorting, searching). Practice implementing these from scratch and solving problems involving them. Review Big O notation for time and space complexity.
Phase 02 of 05
Weeks 3-4: Advanced Data Structures (Trees, Graphs), Graph Algorithms.
Weeks 3-4: Dive into more advanced data structures like trees (binary trees, BSTs) and graphs. Learn common graph traversal algorithms (BFS, DFS) and basic graph problems. Continue practicing coding challenges.
Phase 03 of 05
Week 5: OOP Principles, Design Patterns.
Week 5: Focus on object-oriented programming principles (encapsulation, inheritance, polymorphism, abstraction) and design patterns. If applicable, review functional programming concepts. Practice coding problems that require OOP design.
Phase 04 of 05
Week 6: Git, Basic System Design.
Week 6: Study version control systems, primarily Git. Understand branching, merging, pull requests, and common Git commands. Review basic system design concepts, including databases (SQL vs. NoSQL), APIs, and caching.
Phase 05 of 05
Week 7: Behavioral Questions, Company Research.
Week 7: Prepare for behavioral questions by reflecting on past experiences. Use the STAR method (Situation, Task, Action, Result) to structure your answers. Research Toptal and prepare thoughtful questions for the interviewers.
Questions
Locations
Fig · Regions — 03 locations
01 / 03Location
Interview focus
Common questions
Tips
Location
Interview focus
Common questions
Tips
Location
Interview focus
Common questions
Tips
Rounds
Expand a step for evaluation criteria, sample questions, and prep notes.
Initial Screening · 30 min · Recruiter or Junior Engineer
This initial screening call is typically conducted by a recruiter or a junior engineer to assess your basic qualifications, communication skills, and alignment with the role. They will ask about your background, projects, and motivation for applying to Toptal. It's a chance to understand your experience level and ensure you meet the minimum requirements.
What they look for
Evaluation
Sample questions
Tell me about yourself and your programming experience.
What are your strengths and weaknesses as a software engineer?
Why are you interested in Toptal?
Can you describe a recent project you worked on?
Prep for this round
Common rejection reasons
Technical Interview (Data Structures & Algorithms) · 60 min · Senior Software Engineer
This round focuses on your technical skills, primarily data structures and algorithms. You'll be asked to solve one or two coding problems, often on a shared online editor. The interviewer will assess your approach, efficiency, and the quality of your code. Be prepared to explain your thought process and discuss trade-offs.
What they look for
Evaluation
Sample questions
Given an array of integers, find the two numbers that add up to a specific target.
Implement a function to check if a binary tree is a valid Binary Search Tree (BST).
Write a function to find the kth smallest element in an unsorted array.
Given a string, find the length of the longest substring without repeating characters.
Prep for this round
Common rejection reasons
Technical Interview (System Design) · 60 min · Senior or Staff Software Engineer
This round assesses your ability to think about software architecture and scalability. You might be asked to design a system like a URL shortener, a social media feed, or a chat application. The focus is on understanding requirements, identifying components, designing APIs, choosing databases, and discussing trade-offs.
What they look for
Evaluation
Sample questions
Design a URL shortening service like bit.ly.
Design the backend for a Twitter feed.
How would you design a rate limiter?
Design a system to count unique visitors to a website.
Prep for this round
Common rejection reasons
Behavioral And Cultural Fit Interview · 45 min · Hiring Manager or Senior Team Lead
This interview focuses on your behavioral aspects, cultural fit, and overall potential. You'll be asked questions about your past experiences, how you handle challenges, teamwork, and your career aspirations. The goal is to understand how you operate within a team and if you align with Toptal's culture.
What they look for
Evaluation
Sample questions
Tell me about a time you failed. What did you learn from it?
Describe a situation where you had to work with a difficult team member.
How do you prioritize your work when you have multiple tasks?
What are your long-term career goals?
Prep for this round
Common rejection reasons
DSA
Frequently reported on Toptal loops
Other guides
