Free technical assessment — find your gaps to senior engineer

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Free technical assessment

Find Your Gaps To Senior Engineer.

  • Find out your real gaps to Senior.
  • Know what to focus on next.
  • See how you stand vs JS Engineers worldwide.

We'll send you the results by email · Unsubscribe any time.

10,000+ software engineers already took the assessment.

// 01 — COMPETITIVE BENCHMARK

See Where You Stand

See how you’re doing vs thousands of other software engineers.

EARLY JUNIORJUNIORMIDLEVELUPPER MIDSENIOR0204060801000TH20TH40TH60TH80TH100THPERCENTILESCOREYOU14Bottom 5%
I wanted to fill my gaps to the Senior level.
Chris Joiner
Senior Frontend Engineer · York, UK 🇬🇧
I wanted to fill my gaps…

// 02 — TARGETED SKILL ANALYSIS

In-Depth Skill Analysis

  • JavaScript Fundamentals
  • AI Engineering & ToolingNew
  • Frontend & Component Frameworks
  • Databases & API Design
  • System Design
JS FundamentalsAI ✦ NEWFrameworksAPIs & DataSystem Design

I was able to weed out all the noise…
I was able to weed out all the noise, and focus on the things that were important.
Kirsten Lee Burton
Senior Frontend Engineer · NYC, USA 🇺🇸

// 03 — INTERVIEW READINESS

Based On Real Interview Questions

We built this after analyzing hundreds of real technical interviews.

Algorithms & Data Structures

The patterns interviewers reach for — and when they actually matter.

Frontend Mastery

Components, rendering and state the way production frontends demand.

Fullstack Thinking

Wiring frontend, API and database into one coherent feature.

System Design

Scaling, data flow and the trade-offs seniors reason about out loud.

Software Architecture

Designing systems that scale past the whiteboard sketch.

New

AI Engineering

Building with LLMs, tools and agents — the skill every senior now needs.


I filled the gaps in my knowledge with clear direction and guidance.
Arti Mathanda
Full-Stack Engineer · London, UK 🇬🇧
I filled the gaps in my knowledge…

Find your AI replacement risk.

Early Junior 😱Junior 🥺Mid-Level 😐Upper Mid 🙂Senior 😎HIGHLOW

AI Replacement Risk


Excellent · 4.9 out of 5

on Trustpilot

Direction and guidance

They stay up to date with the AI frenzy, have weekly meetups and respond promptly to all questions.
Kendall 🇺🇸Verified review

// SOURCE: TRUSTPILOT · PULLED 2026-06-10


// THE COMMUNITY — REAL MEMBERS, WORLDWIDE

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theSeniorDev

$ built by engineers, for engineers

Disclaimer: This website and program are operated by theSeniorDev.com. All content is provided for educational and informational purposes only. While many of our students have successfully advanced to Senior-level roles, individual results will vary based on factors such as prior experience, commitment, market conditions, and personal effort. We do not make any guarantees regarding employment, promotions, or specific income levels.