WhoBuilt

Key facts

Capabilities
helps companies assess developer skills before candidates travel onsite
lets companies create custom coding challenges for candidates
matches developers to jobs using demonstrated skills

From talks

Results and examples shared in single talks

Currently building

Based on recent job postings and announcements

Tech stack & tools

Based on job postings, talks and code

Labels show how a tool is used (core product, infra, data, ML, security); “N jobs” counts the job postings that require it. Click a count to see the evidence. How we verify

Hiring

Job board checked Oct 24, 2026

Job board
30open roles
Nov 2025: 1 role postedNovDec 2025: 2 roles postedJan 2026: 3 roles postedFeb 2026: 0 roles postedFebMar 2026: 2 roles postedApr 2026: 2 roles postedMay 2026: 2 roles postedMayJun 2026: 3 roles postedJul 2026: 1 role postedAug 2026: 4 roles postedAugSep 2026: 4 roles postedOct 2026: 5 roles posted5Oct
Currently open roles by month first posted (last 12 months)
Open roles by month posted
2025-111
2025-122
2026-013
2026-020
2026-032
2026-042
2026-052
2026-063
2026-071
2026-084
2026-094
2026-105
Departments
  • Go To Market
    12
  • Engineering
    9
  • Product
    4
  • Marketing
    2
  • People Operations
    2
  • Internship
    1
Hiring focus
  • AI/ML research and production systems for interviews, integrity, and skill evaluation
  • Assessment platform scalability and reliability
  • AI-native live technical interviewing and candidate observation
  • Data engineering and AI-optimized analytics
  • AI model data operations and automation
  • Global customer-facing Forward Deployed Engineering

Summarised from HackerRank's open job titles and departments.

Timeline 18

Dated events, newest first. Open the sources under any item.

How we verify
Initiative6People1Built7Capability3
20266 events
October
  1. Oct 14, 2026Initiative
    High-concurrency assessment environment
    Verified1 source· Job posting
  2. Oct 14, 2026Initiative
    AI-era technical skill evaluation
    Verified1 source· Job posting
  3. Oct 13, 2026Initiative
    AI-native live interview experience
    Verified1 source· Job posting
June
  1. Jun 8, 2026Initiative
    AI-native data layer
    Verified1 source· Job posting
  2. Jun 3, 2026Initiative
    AI data creation pipeline
    Verified1 source· Job posting
January
  1. Jan 8, 2026Initiative
    Global Forward Deployed Engineering expansion
    Verified1 source· Job posting
20182 events
  1. as of Mar 2018Capability
    Helps companies assess developer skills before candidates travel onsite
    “They're doing it efficiently because they understand candidates' skills, strengths, and weaknesses before they come on site” 40:35
    Unverified1 source· Talk
  2. as of Mar 2018Capability
    Lets companies create custom coding challenges for candidates
    “We've built a platform where it's super custom for companies to create challenges.” 1:15
    Unverified1 source· Talk
See all 14 events on the full timeline

Talks by HackerRank 1

53:35
Breaking Down HackerRank's Survey of 40,000 Developers

Vivek Ravisankar describes how HackerRank helps companies assess developers by demonstrated skills and helps developers practice and find jobs. He recounts early business pivots, from paid mock interviews and graduate-school application advice to a company-focused hiring platform, and shares lessons about focus and finding paying customers. Drawing on HackerRank’s survey of 40,000 developers, he discusses self-directed learning, hiring signals, work-life balance, and how startups can hire beyond traditional credentials. He also argues that hiring should assess problem-solving, relevant technical depth, communication, and a candidate’s understanding of the business.

Mar 30, 2018· 54 min 0:08