Toptal Engineering Blog

The Toptal Engineering Blog is a hub for in-depth development tutorials and new technology announcements created by professional software engineers in the Toptal network.

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From Node.js to Paying Your Freelance Taxes: Interview with a Successful Developer

by Luís Martinho

At Toptal, we’re always looking for the best freelancers around. But what makes a freelancer truly great? Luis Martinho, one of our top developers, is beloved by his clients — so we sat down with him to talk about freelancing, technologies, and paying your taxes.

12 minute readContinue Reading
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How to Work Remotely and Still Be the Best

by Ryan Wilcox

Starting a new remote gig, be it a contract project or a full-time job, can be a little intimidating if you're used to going into an office day after day. But this style of employment is growing in popularity, with some very notable companies lending it their endorsements. I've worked remotely for years now on projects of various scales and durations. With this post, I hope to enumerate some of the best practices that I've picked up for working in a variety of situations. The advice here ranges from specific recommendations for software and hardware, to tips for hitting your team's deadlines.

13 minute readContinue Reading
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The H-1B Visa: An iOS Developer's Journey from Honduras to Silicon Valley

by Carlos Hernández

These days, I’m living in the great city of San Francisco. I’ve got a job that I love, and one that I’ve dreamt of having for a long time. Everything seems easy now, but it wasn’t always like this.

10 minute readContinue Reading
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Growing Growth: Perform Your Own Cohort Analysis with This Open Source Code

by Alejandro Rigatuso

But this isn’t just another article about cohort analysis. If you already know the importance of the topic and want to skip the introduction, you can jump to the simulator, where you can either simulate startup growth based on retention, churn, and a number of other factors, or analyze your own PayPal logs with the code I’ve open sourced. If, however, you don’t realize that these are some of the most important metrics around–continue reading.

7 minute readContinue Reading
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CloudI: Bringing Erlang's Fault-Tolerance to Polyglot Development

by Michael Truog

Clouds must be efficient to provide useful fault-tolerance and scalability, but they also must be easy to use. CloudI (pronounced "cloud-e" /klaʊdi/) is an open source cloud computing platform that is most closely related to the Platform as a Service (PaaS) clouds. CloudI differs in a few key ways, most importantly: software developers are not forced to use specific frameworks, slow hardware virtualization, or a particular operating system. By allowing cloud deployment to occur without virtualization, CloudI leaves development process and runtime performance unimpeded, while quality of service can be controlled with clear accountability.

9 minute readContinue Reading
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How I Made a Fully-Functional Arduino Weather Station

by Francisco Clariá

I live in Córdoba, Argentina, approximately 130 kilometers (~80 miles) away from the lake where I kitesurf. Thats roughly a two-hour drive, which I can deal with. But I cant deal with the fact that weather forecasts are inaccurate. And where I live, good wind conditions last just a couple of hours. The last thing you want to do is clear up your Monday schedule to go kitesurfing and find yourself cursing the gods on a windless lake after two hours of driving. I needed to know the wind conditions of my favorite kitesurfing spot—in real time. So I decided to build my own weather station.

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Engineering Internals of a RAD Framework... as a PHP Developer with Nooku

by Cameron Barr

Everyone has their own set of tools. As a PHP developer, one of my favorites is a Rapid Application Development framework called “Nooku”. In the words of the development group: “Nooku is more of a web development toolkit than a framework” In case you are not familiar with it, have a look. It’s an open source project that makes heavy use of industry accepted design patterns to produce highly componentized applications that are easily extensible and reusable (initially created by one of the lead Joomla developers). Out of the box, Nooku gives you a great deal to help get projects off the ground faster. A small, but strong sample:

6 minute readContinue Reading
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How I Made Porn 20x More Efficient with Python Video Streaming

by Gergely Kalman

Porn is a big industry. There aren’t many sites on the Internet that can rival the traffic of its biggest players. And juggling this immense traffic is tough. To make things even harder, much of the content served from porn sites is made up of low latency live streams rather than simple static video content. But for all of the challenges involved, rarely have I read about the developers who take them on. So I decided to write about my own experience on the job.

7 minute readContinue Reading

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