About the role

We build AI products that run real hiring at scale: Charlie (our AI technical interviewer), Ria (our voice agent), and Param (our ATS). Tens of thousands of interviews run on our systems, so the code you write gets used hard, every day.

We are not looking for someone who has memorized a specific framework. We are looking for someone who understands how software actually works underneath, and can reason from first principles when things break. If you are strong on fundamentals, you will be productive here fast.

What you'll do

Write, test, and ship features across our backend services and APIs.
Debug real problems in production: slow queries, flaky requests, edge cases nobody planned for.
Design small systems end to end, then explain your tradeoffs clearly to the team.
Read more code than you write, and leave it cleaner than you found it.
Work closely with senior engineers who will review your work and push your thinking.

What we're looking for

This role is fundamentals-first. You should be solid on:

Data structures and algorithms. You know when to reach for a hash map versus an array, you can reason about time and space complexity, and you can solve problems without a template.
Problem solving. Given an unfamiliar problem, you can break it down, pick an approach, and explain why.
One language, well. Strong command of at least one general-purpose language (Python, Java, Go, C++, JavaScript, or similar). Depth matters more than breadth.
Databases. You understand relational versus non-relational models, can write queries, and know what an index is for.
Web and systems basics. HTTP, REST, request/response lifecycle, client versus server, and what happens when a request actually travels.
Version control. Comfortable with Git in a team setting (branches, reviews, merges).
System design fundamentals. You can sketch a simple system, reason about where it would break, and talk through scaling it.

Nice to have

Exposure to building or consuming APIs.
Familiarity with cloud platforms (GCP, AWS, or similar).
Any prior internship or project work you can walk us through.

How we hire

Our first technical round is a live coding plus system design interview with Charlie, our own AI interviewer. It adapts to your answers, so it goes as deep as you do. Bring your reasoning, not just your solution.

Why TidyHire

Your work ships fast and gets used at real scale.
Tight team, direct feedback, no layers between you and the people building the product.
You learn the full path: design, build, ship, debug, repeat.