Women’s Voices — A Product Design Story

This post is part of a series about the women behind ‘Women’s Voices’, an in-app story created by Deezer for International Women’s Day: Part. 1: Women’s Voices — A Product Story Part. 2: Women’s Voices — A Brand Story Part. 3: Women’s Voices — A Data Story Part. 4: Women’s Voices — A…

Focus and Contrast

The Deezer logo as seen by someone with Protonapia (Red-Green Color-blindness). This image was created using the Chrome extension ChromeLens, which allows you to view a website as seen by someone with a variety of visual conditions, from color-blindness to those with partial sight. In the last article, we looked…

Deezer Introduces Search by Lyric

From 2 weeks to 15 minutes — How we optimized playlist generation

Akka as a bridge between REST and Kafka

Source: sciencing.com At Deezer, we love to play different chords, and to play with different technologies. Here we will present a solution to the problem of receiving millions of messages per day from a REST endpoint, processing them and pushing them back to Kafka. Inspired by The Reactive…

Detecting explicit content in songs

We’ve done some research about how to automatically detect explicit content in songs using only the music itself, and no additional metadata. Since it’s a sensitive and subjective issue, we did not want to use a black-box model, but rather build a modular system whose decisions can be traced back…

Computing Royalties at Deezer

Deezer, as a streaming service, needs to pay royalties to music providers (record companies that make their music available on Deezer) as well as publishers and copyright collective management organisations so that the music you listen to gets payed at the right price according to the number of times it…

Deezer Research @RecSys 2017 — 11th ACM Recommender Systems Conference

A key aspect of Deezer product is providing our users with a personalized listening experience. To pick the perfect tracks for the right moment, a wide variety of signal processing and machine learning algorithms are involved in Deezer’s…

Private libraries in Android — how to manage them.

Part 1: Private libraries in Android — why you should consider it Part 2: Private libraries in Android — how to manage them In the first part of the series, we talked about the benefits of private libraries. On top…

HAMR@ISMIR2018 — Deezer HQ

We hosted the 2018 ISMIR edition of the HAMR Hackathon. It was awesome, people from all over the world collaborated on fun and innovative research topics during two days. A lot of very cool projects emerged. Most of them won’t stick but some will, and that -you have to admit…

Introducing an improved Deezer experience on Xbox: access your favorite songs directly while…

A little context The Xbox Guide By pressing the Xbox button on your controller, you access the Xbox Guide. This is…

Lifting our 2,000 favorite tracks limit

Co-authored by Virgile Carron Adding tracks to favorites is one of Deezer’s most important features. It’s been here for ten years now. It’s the best way to save the content that you love and above all to help us suggest awesome music according to your tastes. It’s also the essence…

Towards an Accessible Player

The “Able Player”, a fully accessible music player that we used as an example of best-practices. You can find out more about it here Earlier this year, Deezer hosted one of its regular Hackathons, giving developers from different teams the chance to collaborate on ad-hoc projects or fun ideas they…

My first job as a Web Engineer, from doubt to fulfillment

This is what you’ll typically find in the ‘requirements’ section of a tech job vacancy: “Has strong knowledge in several languages, is “full-stack”, is able to create strong architecture, scalable and flexible, has experience in understanding large and complex code bases, must be proactive and organized, has a great team…

Merging like it’s 2099

Anyone who has worked with a big team on a big project has experienced merge conflicts at least once. Presentation of AutoMergeTool at AndroidMakers 2017 If you have never seen a list of ‘CONFLICT’ lines when rebasing or merging…

Women’s Voices — A Data Story

Part. 1: Women’s Voices — A Product Story Part. 2: Women’s Voices — A Brand Story Part. 3: Women’s Voices — A Data Story Part. 4: Women’s Voices — A…

Engines revving for my first hackathon!

Since the previous…

Improving your ingestion performance using the multidisciplinary approach

When it comes to solving a problem, developers often tend to use the technologies they’re comfortable with — the technologies they work with on a daily basis. Most of the time this is fine — we work within a specific scope in which this technology makes sense and has already…

FOSDEM 2018

What is FOSDEM? FOSDEM (Free and Open-source Software Developer’s European Meeting) is one of the largest European open-source and non-commercial conference, taking place annually at the Université Libre de Bruxelles. This year it offered more than 650 lectures presented by 600 speakers on 50 different themes. It’s a real place to share and…

Are you chilling right now? Contextualizing music recommendations

As you may know, Sonar Festival is one of the biggest electronic music festivals in Europe and takes place every June in Barcelona. Alongside the festival, Sonar organizes a technical challenge as part of the Sonar +D. For this event, Sonar has partnered with…

Women’s Voices — A Brand Story

Part. 1: Women’s Voices — A Product Story Part. 2: Women’s Voices — A Brand Story Part. 3: Women’s Voices — A Data Story Part. 4: Women’s Voices — A…

What’s Right with Errors

You’re enjoying your app when suddenly an error message pops up, reading “Error: Something went wrong” Or you’re developing a new feature and attempting to interact with this outdated API that just returns NO when you call [Obscure.sharedManager doYourMagic] … And you’re frustrated!

Musicathon — Let’s Rock IT Innovation

‘Hey Siri, play my Flow on Deezer’ (part 1.): a product introduction

Voice interactive devices and services have significantly spread over the last four years. Consequently, voice assistants have become smarter and more sophisticated in their ability to handle new and complex demands. Moreover, voice assistance has also become an available feature in more and more devices. In 2018, Apple announced that…

1001 ways to code your projects, 1 way to meet your needs

Have you ever noticed that there are about 1001 ways to do something, especially in software development? As I tell every developer who joins my team, especially interns or junior devs, no one knows everything and every solution should be considered. I was recently confronted with 1001 ways of doing…