heycar

Structuring engineering teams to deliver value to multiple markets

What’s the ideal organizational setup for a company building a digital product? Of course, there’s no single answer. It depends on many factors, including the stage of the organization, business…

On Testing — Part 2

There are quite a few different approaches to how to go about testing your application and the decision solely depends on the team and the product. Below are the most commonly mentioned approaches…

On Testing — Part 1

Testing a software is as important as creating it, if not more. If used efficiently, tests can save teams so much time and effort, in addition to providing a stable software. In this article, I will…

From React Native to Native

At heycar we have been working with React Native since the beginning and like every tool it has its ups and downs. Today I will be explaining one of the downs that we faced and how we overcame this…

The web E2E testing journey at heycar

The tiring - but exciting- journey to research, implement and start using end-to-end (E2E) tests at heycar.

How to host cool online meetings

Online meetings have become essential part of our routine. I've been trying to make the meetings I host more engaging and fun 🤩

SQS Queue usage for decoupling, ordering and retry

Messages queue is a powerful tool for asynchronous communication between services. Messages are sent to the queue by a Producer and stay in the queue until they are not consumed and processed by a…

Website Performance Diagnosis and possible improvements

Performance of a website has become an integral part of the website development these days. It directly affects the end users landing on the website which leads to a positive/negative impact on…

4 stages to working effectively with an error monitoring system

Being effective using Sentry as an error monitoring tool

Building collaboration through pair programming: a journey

It has been months since we have adopted pair programming in Martech at heycar. When we started, it wasn’t clear what were the benefits and we had the assumption that it would consume more time and…

Using Kotlin Coroutines @ heycar

Coroutines are a powerful alternative to several libraries for reactive programming on the JVM. We'll give a background on what they are and how they work.

The ‘Stakeholder’ role in agile product development

The product teams in your organization use Agile methods like Scrum. For them to be successful, they need internal Stakeholders to behave a certain way.

Engine hot swapping: upgrading Kubernetes 1.8 straight to 1.15 with zero downtime

There is no quick and easy way to achieve in-place upgrade from 1.8 to 1.15. This article describes how we successfully jumped over several minor versions of Kubernetes releases using what we call…

A brief history of heycar values

With this article we, the People & Culture team of heycar, would like to reflect on our company value journey. We start with the development; how we tried to implement it in our culture; and end…

How we use the power of design to drive conversion (part 1)

At heycar we believe that great design can deliver a huge impact and can help us as a company help users find their perfect car. That is why value taking chances and testing ideas on one of the most…

Neural Network Embeddings: from inception to simple

Whenever I encounter a machine learning problem that I can easily solve with a neural network I jump at it, I mean nothing beats a morning standup other than a morning standup with a half a dozen…

Small changes can make big impacts on React

Performance is essential for every project, as we know. However, it’s more important when it’s a client project because you need to think about all the browsers, even internet explorer. From this…

Building and democratizing design in a fast growing start-up

As a fast-growing start-up, building design capabilities is a fascinating challenge. On one hand, the open-minded spirit of a new venture provides the breeding ground for experiments, divergent…

Building a Real-World Pipeline for Image Classification — Part I

One of the most important things of a classified website is its images. It’s probably the first interaction of your customer with your product. UX is one of our corner stones at heycar. Therefore, we…

Deep learning: hey, where’s my car 2?

Part 1 of this series regaled us with a small insightful origin story about the startup heycar and its ambitious journey to find the optimal recommender system. For those who weren’t with us for part…

The Fast and the Payloadless

A brief story of how open-source software helped us to reduce 10 times our payload and scale image serving at heycar The basic infrastructure at heycar was built in 6 weeks. Of course, at that time…

Deep learning: hey, where’s my car?

A good merchant knows what their customers want, but in the world of online classifieds and e-commerce do we really know our customers? How can we tell who is serious and who is simply passing by…