An open API service for software projects hosted on Open Collective.

Tech Interview Handbook

Curated interview preparation materials for busy engineers
Collective - Host: opensource - https://opencollective.com/tech-interview-handbook - Website: https://techinterviewhandbook.org/ - Code: https://github.com/yangshun/tech-interview-handbook

20.0 USD - Financial contribution to Tech Interview Handbook (O(nlgn) Backer)

brabbuss - 18 Feb 2026

-0.88 USD - Stripe payment processor fee

stripe-payment-processor-vendor - 18 Feb 2026

-2.0 USD - Host Fee

opensource - 18 Feb 2026

100.0 USD - Financial contribution to Tech Interview Handbook (O(1/n) backer)

system-overflow - 13 Dec 2025

-4.7 USD - Stripe payment processor fee

stripe-payment-processor-vendor - 13 Dec 2025

-10.0 USD - Host Fee

opensource - 13 Dec 2025

20.0 USD - Financial contribution to Tech Interview Handbook (O(nlgn) Backer)

peerfect - 08 Nov 2024

-0.88 USD - Stripe payment processor fee

stripe-payment-processor-vendor - 08 Nov 2024

-2.0 USD - Host Fee

opensource - 08 Nov 2024

2.0 USD - Financial contribution to Tech Interview Handbook

greenpromocode-com - 03 Mar 2024

-0.36 USD - Stripe payment processor fee

stripe-payment-processor-vendor - 03 Mar 2024

-0.2 USD - Host Fee

opensource - 03 Mar 2024

96.8 USD - Financial contribution to Tech Interview Handbook (O(1/n) backer)

guest-e2f68fc5 - 29 Sep 2023

-10.0 USD - Host Fee

opensource - 29 Sep 2023

48.25 USD - Financial contribution to Tech Interview Handbook (O(n) Backer)

arpan-adhikari - 20 Jun 2022

-5.0 USD - Host Fee

opensource - 20 Jun 2022

47.01 USD - Monthly financial contribution to Tech Interview Handbook

targeted-web-traffic1 - 29 Mar 2022

-5.0 USD - Host Fee

opensource - 29 Mar 2022

-50.25 USD - Front End vs. Back End System Design Interviews

zhenghao - 09 Mar 2022

47.01 USD - Monthly financial contribution to Tech Interview Handbook

targeted-web-traffic1 - 28 Feb 2022

-5.0 USD - Host Fee

opensource - 28 Feb 2022

47.01 USD - Monthly financial contribution to Tech Interview Handbook

targeted-web-traffic1 - 29 Jan 2022

-5.0 USD - Host Fee

opensource - 29 Jan 2022

47.01 USD - Monthly financial contribution to Tech Interview Handbook

targeted-web-traffic1 - 29 Dec 2021

-5.0 USD - Host Fee

opensource - 29 Dec 2021

47.01 USD - Monthly financial contribution to Tech Interview Handbook

targeted-web-traffic1 - 29 Nov 2021

-5.0 USD - Host Fee

opensource - 29 Nov 2021

47.01 USD - Monthly financial contribution to Tech Interview Handbook

targeted-web-traffic1 - 29 Oct 2021

-5.0 USD - Host Fee

opensource - 29 Oct 2021

19.12 USD - Financial contribution to Tech Interview Handbook (O(nlgn) Backer)

flowdash - 27 Oct 2021

-2.0 USD - Host Fee

opensource - 27 Oct 2021

-50.51 USD - Blog Post

li-kai - 02 Sep 2021

4.5 USD - Financial contribution to Tech Interview Handbook (O(n^2) Backer)

cloudmodlr - 30 Aug 2021

-0.5 USD - Host Fee

opensource - 30 Aug 2021

4.5 USD - Financial contribution to Tech Interview Handbook (O(n^2) Backer)

arbeitnow1 - 20 Aug 2021

-0.5 USD - Host Fee

opensource - 20 Aug 2021

0.66 USD - Financial contribution to Tech Interview Handbook

arbeitnow1 - 20 Aug 2021

-0.1 USD - Host Fee

opensource - 20 Aug 2021

86.8 USD - Financial contribution to Tech Interview Handbook (O(1/n) backer)

guest-00dd4600 - 27 May 2021

-2,000.25 USD - Maintenance

yangshun - 17 Dec 2020

9.0 USD - Financial contribution to Tech Interview Handbook

ravi-teja-pothana - 15 Dec 2020

0.56 USD - Financial contribution to Tech Interview Handbook

germantechjobs - 04 Oct 2020

4.0 USD - Financial contribution to Tech Interview Handbook (O(n^2) Backer)

swissdev-jobs - 24 Sep 2020

42.75 USD - Financial contribution to Tech Interview Handbook (O(n) Backer)

standard-resume - 17 Jun 2020

17.12 USD - Financial contribution to Tech Interview Handbook (O(nlgn) Backer)

aadit-rahul-kamat - 17 May 2020

4.0 USD - Financial contribution to Tech Interview Handbook

nawok - 12 Apr 2020

21.47 USD - Financial contribution to Tech Interview Handbook

fatih-unlu - 01 Apr 2020

4.05 USD - Monthly financial contribution to Tech Interview Handbook

nirav-vasa1 - 01 Apr 2020

21.47 USD - Financial contribution to Tech Interview Handbook (O(n^2) Backer)

qihua-hao - 30 Mar 2020

17.12 USD - Financial contribution to Tech Interview Handbook (O(nlgn) Backer)

ben-hunt - 24 Mar 2020

21.47 USD - Financial contribution to Tech Interview Handbook

janardhana-swamy-adapa - 14 Mar 2020

21.47 USD - Financial contribution to Tech Interview Handbook

david-dreyer - 14 Mar 2020

21.47 USD - Financial contribution to Tech Interview Handbook

manish-meshram - 13 Mar 2020

21.47 USD - Financial contribution to Tech Interview Handbook

ishan-madan - 11 Mar 2020

21.47 USD - Financial contribution to Tech Interview Handbook

aaron-robinson - 09 Mar 2020

12.76 USD - Financial contribution to Tech Interview Handbook

selman-yilmaz - 05 Mar 2020

17.12 USD - Financial contribution to Tech Interview Handbook (O(nlgn) Backer)

mike-cohen - 05 Mar 2020

17.12 USD - Financial contribution to Tech Interview Handbook (O(nlgn) Backer)

hanzen-lim - 04 Mar 2020

21.47 USD - Financial contribution to Tech Interview Handbook

jackson-beall - 03 Mar 2020

21.47 USD - Financial contribution to Tech Interview Handbook

abhishek-sharma - 01 Mar 2020

4.05 USD - Financial contribution to Tech Interview Handbook

arun-narasani - 01 Mar 2020

8.41 USD - Financial contribution to Tech Interview Handbook

anand-c-ramanathan - 01 Mar 2020

4.05 USD - Monthly financial contribution to Tech Interview Handbook

nirav-vasa1 - 01 Mar 2020

17.12 USD - Financial contribution to Tech Interview Handbook (O(nlgn) Backer)

kevin-liu - 25 Feb 2020

21.47 USD - Financial contribution to Tech Interview Handbook

ben-nelson - 23 Feb 2020

17.12 USD - Financial contribution to Tech Interview Handbook (O(nlgn) Backer)

yoseph-tesfaye-asfaw - 22 Feb 2020

17.12 USD - Financial contribution to Tech Interview Handbook

yoseph-tesfaye-asfaw - 22 Feb 2020

21.47 USD - Financial contribution to Tech Interview Handbook

jonathan-boulton - 21 Feb 2020

21.47 USD - Financial contribution to Tech Interview Handbook

alex-day - 19 Feb 2020

21.47 USD - Financial contribution to Tech Interview Handbook

chris-hsu - 18 Feb 2020

21.47 USD - Financial contribution to Tech Interview Handbook

aaron-fischer - 18 Feb 2020

65.02 USD - Financial contribution to Tech Interview Handbook (O(lgn) backer)

chris-lau - 13 Feb 2020

65.02 USD - Financial contribution to Tech Interview Handbook (O(lgn) backer)

he-jiang - 10 Feb 2020

65.02 USD - Financial contribution to Tech Interview Handbook

ankur-agarwal - 10 Feb 2020

65.02 USD - Financial contribution to Tech Interview Handbook (O(lgn) backer)

andrii-sherman - 10 Feb 2020

65.02 USD - Financial contribution to Tech Interview Handbook

brian-timar - 09 Feb 2020

43.25 USD - Financial contribution to Tech Interview Handbook (O(n) Backer)

dong-wang - 09 Feb 2020

17.12 USD - Financial contribution to Tech Interview Handbook (O(n^2) Backer)

dong-wang - 09 Feb 2020

17.12 USD - Financial contribution to Tech Interview Handbook (O(nlgn) Backer)

see-yishu - 09 Feb 2020

65.02 USD - Financial contribution to Tech Interview Handbook (O(lgn) backer)

shirley-liu - 08 Feb 2020

65.02 USD - Financial contribution to Tech Interview Handbook (O(lgn) backer)

sreenath-kanumarath - 07 Feb 2020

65.02 USD - Financial contribution to Tech Interview Handbook (O(lgn) backer)

calvin-leung - 03 Feb 2020

17.12 USD - Financial contribution to Tech Interview Handbook

suresh-karki - 01 Feb 2020

30.18 USD - Financial contribution to Tech Interview Handbook

kenneth-li - 01 Feb 2020

17.12 USD - Financial contribution to Tech Interview Handbook

diego-brito - 01 Feb 2020

65.02 USD - Financial contribution to Tech Interview Handbook (O(lgn) backer)

andrew-armaneous - 29 Jan 2020

17.12 USD - Financial contribution to Tech Interview Handbook

erik-haliewicz - 28 Jan 2020

17.12 USD - Financial contribution to Tech Interview Handbook (O(nlgn) Backer)

wes-miravete - 27 Jan 2020

4.05 USD - Monthly financial contribution to Tech Interview Handbook

nirav-vasa1 - 27 Jan 2020

4.05 USD - Financial contribution to Tech Interview Handbook (O(n^2) Backer)

nirav-vasa1 - 27 Jan 2020

65.02 USD - Financial contribution to Tech Interview Handbook

vimala-jampala - 25 Jan 2020

65.02 USD - Financial contribution to Tech Interview Handbook (O(lgn) backer)

kunal-parmar - 24 Jan 2020

65.02 USD - Financial contribution to Tech Interview Handbook

yicheng-jin - 24 Jan 2020

65.02 USD - Financial contribution to Tech Interview Handbook

nathaniel-hunt - 20 Jan 2020

65.02 USD - Financial contribution to Tech Interview Handbook

arash-saeidpour - 20 Jan 2020

65.02 USD - Financial contribution to Tech Interview Handbook (O(lgn) backer)

marc-lester-tan - 18 Jan 2020

17.12 USD - Financial contribution to Tech Interview Handbook (O(nlgn) Backer)

incognito-6d99be0e - 17 Jan 2020

65.02 USD - Financial contribution to Tech Interview Handbook (O(lgn) backer)

stan-naspinski - 14 Jan 2020

65.02 USD - Financial contribution to Tech Interview Handbook

samantha-taylor2 - 12 Jan 2020

65.02 USD - Financial contribution to Tech Interview Handbook (O(lgn) backer)

kanstantsyn-zoryn - 06 Jan 2020