By Sylvain Bougerel

In the first part of this blog post, you’ve read about the improvements made to our build and staging deployment process, and how plenty of manual tasks routinely taken by engineers have been automated with Conveyor: an in-house continuous delivery solution.

This new post begins with the introduction of the hermeticity principle for our deployments, and how it improves the confidence with promoting changes to production. Changes sent to production via Conveyor’s deployment pipelines are then described in detail.

By Suman Anand, Elisa Monacchi, Darrell Tay, Yun Zou, Wan Ling Guai

In previous articles (see Grab’s in-house chat platform, workforce routing), we shared how chat has grown to become one of the primary channels for support in the last few years.

With continuous chat growth and a new in-house tool, helping our agents be more efficient and productive was key to ensure a faster support time for our users and scale chat even further.

Starting from the analysis on the usage of another third-party tool as well as some shadowing sessions, we realised that building a templated-based feature wouldn’t help. …

By Sc Ng, Herman Khoo, Audrey Jee, Vaibhav Vij, Mohammed Milhad Miah

Grab, Southeast Asia’s leading superapp, is a hyperlocal three-sided marketplace that operates across hundreds of cities in Southeast Asia. Grab started out as a taxi hailing company back in 2012 and in less than a decade, the business has evolved tremendously and now offers a diverse range of services for consumers’ everyday needs.

To fuel our business growth in newer service offerings such as GrabFood, GrabMart and GrabExpress, user acquisition efforts play a pivotal role in ensuring we create a sustainable Grab ecosystem that balances the marketplace dynamics between our consumers, driver-partners and merchant-partners.

Part of our user growth strategy…

By Stan Halka, Samuel Thomas

Grab’s engineering teams currently own and manage more than 250+ microservices. Depending on the business problems that each team tackles, our development ecosystem ranges from Golang, Java, and everything in between.

Although there are centralised systems that help automate most of the build and deployment tasks, there are still some teams working on different technologies that manage their own build, test and deployment systems at different maturity levels. Managing a varied build and deploy ecosystems brings their own challenges.

Build Challenges

  • Broken external dependencies.
  • Non-reproducible builds due to changes in AMI, configuration keys and other build parameters.
  • Missing security permissions…

By Suman Anand, Elisa Monacchi, Jasmine Lim, Matthew Yeow, Pengcheng Zhao


With Grab’s wide range of services, we get large volumes of queries a day. Our Customer Support teams address concerns and issues from safety issues to general FAQs. The teams delight our consumers through quick resolutions, resulting from world-class support framework and an efficient workforce routing system.

Our routing workforce system ensures that available resources are efficiently assigned to a request based on the right skillset and deciding factors such as department, country, request priority. Scalability to work across support channels (e.g. voice, chat, or digital) is also another factor considered for routing a request to a particular support specialist.

By Indrajit Sarkar

Since the early beginnings, driver-partners have been the centrepiece of the wide-range of services or features provided by the Grab platform. Over time, many backend microservices were developed to support our driver-partners such as earnings, ratings, insurance, etc. All of these different microservices require certain information, such as name, phone number, email, active car types, and so on, to curate the services provided to the driver-partners.

We built the Drivers Data service to provide drivers-partners data to other microservices. The service attracts a high QPS and handles 10K requests per second during peak hours. Over the years, we have tried…

By Clarisse Peralta, Shweta Padmanaban, Ya Gao, Eelin Ngiow

Grab is Southeast Asia’s leading superapp, providing everyday services such as ride-hailing, food delivery, payments, and more. In this blog, we’d like to share our journey in discovering the need for GrabMart and coming together as a team to build it.

Being There in the Time of Need

Back in March 2020, as the COVID-19 pandemic was getting increasingly widespread in Southeast Asia, people began to feel the pressing threat of the virus in carrying out their everyday activities. As social distancing restrictions tightened across Southeast Asia, consumers’ reliance on online shopping and delivery services also grew.

Given the ability of our systems to readily adapt to…

By Jie Zhang, Abdullah Al Mamun

Ever wondered what goes behind the scenes when you receive advisory messages on a confirmed booking? Or perhaps how you are awarded with rewards or points after completing a GrabPay payment transaction? At Grab, thousands of such campaigns targeting millions of users are operated daily by a backbone service called Trident. In this post, we share how Trident supports Grab’s daily business, the engineering challenges behind it, and how we solved them.

By Hao Wu, Minglei Su, Thanh Dat Le, Nuo Xu, Guanfeng Wang, Mihai Stroe

Have you ever wondered what happens when you click on the book button when arranging a ride home? Actually, many things happen behind this simple action and it would take days and nights to talk about all of them. Perhaps, we should rephrase this question to be more precise. So, let’s try again — have you ever thought about how Grab stores and uses driver locations to allocate a driver to you? If so, you will surely find this blog post interesting as we cover how it all works in the backend.

What Problems are We Going to Solve?

One of the fundamental problems of the ride-hailing…

By Ajay Srivastava, Aniket Kulkarni, Avinash Singh, Nathaniel Callens

Security has always been a top-priority at Grab; our product security team works round-the-clock to ensure that our consumers’ data remains safe. Five years ago, we launched our private bug bounty programme on HackerOne, which evolved into a public programme in August 2017. The idea was to complement the security efforts our team has been putting through to keep Grab secure. We were a pioneer in Southeast Asia to implement a public bug bounty programme, and now we stand among the Top 20 programmes on HackerOne worldwide.

We started as a private bug bounty programme which provided us with fantastic…


Southeast Asia’s leading Online to Offline (O2O) mobile platform, providing the everyday services that matter most to consumers.

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