Daniel CostainLevel Up CodingAmazon's Sr. Software Engineer at 27 — 8 important lessons I've learned so far in my careerLearnings I had throughout my whole career that I’d like to have learned before7 min read·Jan 7, 2022--56--56
Daniel CostainLevel Up CodingRunning Lambda functions Faster and CheaperA guide on how a simple configuration can make your functions faster and cheaper5 min read·Nov 30, 2021--1--1
Daniel CostainHackerNoon.comMaking a web voting app handling 245 million votes with $0.12The Inspiration5 min read·Dec 3, 2018--3--3
Daniel Costaincodeburst(My beloved) Python can trick youThis article is a real case of how my dear Python tricked my teammate. More than that, a questioning about something I’ve been reading a…5 min read·Jun 18, 2018----
Daniel CostainHackerNoon.comUnit Testing: A Simplistic and Language-Agnostic ApproachNowadays, unit testing is a required skill for a Software Engineer. But, many of them don’t know that, and think that it’s something from…5 min read·May 11, 2018----