Coming soon

You only get one shot.
Take it and crush it.

tk1s is your real-time AI interview assistant. Whatever they ask, you'll know exactly what to say. Every answer is built from your own experience and the job you're applying for.

Works with Zoom, Google Meet, Teams and any other call.

Interviewer

Tell me about a time you disagreed with a technical decision. What did you do, and how did it turn out?

On your screen

On the payments migration at Northwind, the plan was a single weekend cutover. I thought the risk was too high.

I pulled the incident history from our last two migrations and proposed a dual-write rollout instead, with a one-page plan for how we would verify each stage.

We shipped with zero downtime, and that rollout became the team's default for every migration after it

Interviewer

Given a string, find the length of the longest substring without repeating characters.

On your screen

Slide a window across the string and remember where you last saw each character. On a repeat, jump the start past the earlier copy.

Python

def longest_unique(s: str) -> int:
    last_seen = {}
    start = best = 0
    for i, ch in enumerate(s):
        if ch in last_seen and last_seen[ch] >= start:
            start = last_seen[ch] + 1
        last_seen[ch] = i
        best = max(best, i - start + 1)
    return best

One pass, so O(n) time, and O(k) space for the characters seen.

Interviewer

How would you design a rate limiter for our public API?

On your screen

Ask first: is the limit per user or per API key, and are short bursts allowed?

Propose: a token bucket per key, enforced at the gateway, with the counters in Redis so every node agrees.

Raise before they do: what happens when Redis is down. Fail open with a small local limit, and alert.

What tk1s does for you

Real-time transcript

Everything you and the interviewer say appears on screen as it is said.

  • A long, multi-part question stays in front of you
  • You and the interviewer are transcribed separately
  • Saved after the call, so you can review every question

Instant answers from your own background

Talking points appear instantly, with the full answer right after.

  • Built from your résumé, the job description and your notes
  • Press one key, or let it answer each question automatically
  • Coding rounds: take a screenshot and get working code

Only you can see it

A small window sits on top of your call and stays off your shared screen.

  • Built to stay hidden when you share your screen
  • No bot joins the meeting
  • Runs without an app icon on screen

Your keys, your data

Nothing goes through our servers, so we never see your interviews.

  • Bring your own AI key and pick the model
  • Transcripts and documents stay on your computer
  • Your keys are kept in your computer's secure key store

How it works

  1. 1

    Start with your résumé

    Add your résumé, the job description and any notes you've prepared.

  2. 2

    Join your interview

    Join the call as usual. tk1s runs on your own computer, so there's nothing to add to the meeting and no bot joins it.

  3. 3

    Press one key when you need help

    You get talking points first and the full answer right after. Read it, then say it in your own words.

Nail it in one shot.

Walk into your next interview with tk1s by your side.

Coming soon