Find your path to Lucas
32 people in our graph share verified history with Lucas — schools, employers, funds. One of them is your warm intro.
About
Lucas da Costa is founder and CEO of Briefer. He previously worked as a senior software engineer at Elastic and led engineering teams at an early-stage London startup. He has maintained open-source testing libraries including Chai.js and Sinon.js, authored "Testing JavaScript Applications" published by Manning, and spoken internationally on software engineering topics.
Founder at BrieferYC S23
Intro paths
Lucas went through Y Combinator (Summer 2023) — any YC alum in your network can reach them through the YC community.
Their group partner at YC was Aaron Epstein, General Partner at Y Combinator — the partner who ran Briefer's batch and knows the company first-hand. YC profile ↗
In turn, Lucas can intro founders to Briefer's investors below.
Briefer's investors · 1
Co-founders at Briefer
Experience
- ResendEngineeringcurrent2025 — presentSan Francisco Bay Area
- Briefer (YC S23)Founder & CEO2022 — 2025São Paulo, Brazil
- ElasticSenior Software Engineer2021 — 2022London, England, United Kingdom
- ConvergeSoftware Team Lead2020 — 2021London, England, United Kingdom
- ConvergeSoftware Engineer2017 — 2020London, United Kingdom
- DiffiaSoftware Engineer2017
- Shaw and PartnersSoftware Engineer2016 — 2017
- myTappFullStack Developer - Intern2016Florianópolis e Região, Brasil
- Hydra SystemsDevelopment Intern2015 — 2016
- Hydra SystemsQA Intern2014 — 2015
- SeTIC - UFSCNetwork Intern2013 — 2014
Skills & more
+12 more
MochaRedux.jsReact NativeMetodologias ágeisTechnical WritingTddPublic SpeakingEnglishTypeScriptVimHaskellFunctional ProgrammingLanguages Francês · Inglês · Português
- TOEFL - ITP — ETS
From Lucas's professional profile.
Frequently asked questions
- Who is Lucas da Costa?
- Lucas da Costa is founder and CEO of Briefer. He previously worked as a senior software engineer at Elastic and led engineering teams at an early-stage London startup. He has maintained open-source testing libraries including Chai.js and Sinon.js, authored "Testing JavaScript Applications" published by Manning, and spoken internationally on software engineering topics.
- Where does Lucas da Costa work?
- Lucas da Costa is Founder of Briefer.
- What companies did Lucas da Costa found?
- Lucas da Costa founded Briefer.
- Where did Lucas da Costa go to school?
- Lucas da Costa studied at Y Combinator (S23); Universidade Federal de Santa Catarina (Bachelor of Computer Information Systems, Information Systems).
Founder mafias
Y Combinator mafia10,230
Also came through, then founded or led a company.
+ 10,223 more
Universidade Federal de Santa Catarina mafia7
Also came through, then founded or led a company.
Resend mafia3
Also came through, then founded or led a company.
Same school
Also attended Y Combinator2,000
+ 1,994 more
Also attended Universidade Federal de Santa Catarina27
+ 21 more
Shared employers
Also worked at Briefer (YC S23)1
Also worked at Elastic35
+ 29 more
