Webhook infrastructure

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Early-stage startup
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Working at Hookdeck

Never miss a webhook. Receive webhooks reliably, even after server outages. Free features like automatic retries and rate limiting keep your system humming – while developer-friendly tooling and an intuitive dashboard keep the whole team happy.

Tech stack


How engineering works at Hookdeck

How are the teams structured?

We have two engineering teams - the product team and the infrastructure team. The product team is multidisciplinary and it works in tandem with designers, front-end engineers, and backend engineers. It does everything that you need to actually be able to build out the whole surface of the product. This team works on the dashboard, the APIs, the CLI.

The infrastructure team is focused on building the core infrastructure for the product team to build upon. They work on things like queuing mechanisms, event life cycle management, deployment, scalability, data engineering, security and more.

What tools do engineers use?

  • Data Storage: Postgres, BigQuery, Elasticsearch
  • Message Brokers: Kafka, Pub/Sub, Redis
  • Infrastructure: Cloudflare Workers, Kubernetes (GKE)
  • Design: Figma
  • Source Control: Git and GitHub
  • Issue tracking: GitHub projects
  • Documentation: Notion
  • Incident management: Better Uptime
  • Communication: Gmail, Slack, Loom
  • Build and Deployment: GitHub Actions, Docker
  • Error Tracking: Sentry and LogRocket
  • Monitoring: Google Cloud Monitoring, Better Uptime

Can developers pick their own tools?

Developers can pick whatever tool they want. We're using a monorepo structure where we have a repo that you can launch via Docker Compose, but beyond that, engineers can use whatever debugger, IDE, Git client, etc.

How does the development process work? What's the process for working through bugs, features and tech debt?

We start the development process by developing the theme and the road map for the quarter, but it's not strictly set. These are the bigger goals that we're trying to achieve. This gets divided into specific projects and those projects are prioritized on a two week basis, but it's not a deadline - it's more like an opportunity to realign and refocus on what we should be working on. Some projects last more than one cycle, we're not working against the clock.

Once the project is in scope, we start working on it. It depends from week to week, but generally we try to aim for about 50% of your work that's dedicated to that project. Then the other 50% is focused on the issues pipeline. Whenever there's bugs or refactoring opportunities, we put them inside our GitHub project board and engineers pick bugs at their own discretion. We don't have a systemic prioritization there, but we do keep one column that we call “to-do”, it's a short list of things that seem more important.

There's a backlog, but anyone is free at any point to take something from it and work on it. We do have a no bug policy where essentially any bug that we find is automatically prioritized regardless of the impact or the size of that bug.

How does code get reviewed, merged, and deployed?

We're SOC 2 compliant and it's part of our policy to be reviewed by one individual from the team affected by that PR. Once your PR is approved, then you can merge it at your own discretion at any time into either staging or preview environment branches.

When you merge something that requires specific QA, then you request a QA and someone from the team will volunteer to QA. We do a rollout if there's no pending QA on the branch, it happens mostly automatically, we just have to get approval for the rollout from someone else from the team and then it goes out to production automatically.

What is the QA process?

When someone requests a QA, they basically request it openly and then someone from the team checks it. That is still on a very ad hoc basis. QA mostly tends to be testing new things on the UX side because everything else is covered by integration tests or end to end tests that are run automatically on each change.

What are some recent examples of interesting development challenges solved by internal teams as part of building the product?

On the infrastructure front, I think one of the interesting challenges that we're dealing with is that we're processing a ton of data which needs to be used for multiple use cases. We’re doing data aggregations to be able to give statistics to users, but also trigger product events like alerts if a back pressure is accumulating on your queues.

We're also trying to give the customer the ability to search through that data in a way that's fairly efficient. Users need to slice and dice the data in multiple different ways and see the events associated with it. So what you end up with is serious data engineering challenges, where you have to move millions of rows at a time in a way that's efficient, that doesn't create too much replication lag, but also allows us to perform all the operations that we need on it. This has led to discussions around which storage technology we should use, what the schema should be, etc.

And then there's a crossover in business and engineering concerns where we need to do work in a way that's going to be cost efficient for the future. We have extremely high up time requirements because people come to us for reliability. They come to us because we're going to do it better than them in terms of the uptime and reliability of receiving the webhooks. It is unreasonable for a company our size to provide 100% uptime, so we have to make a few trade offs. In our case, we have optimized for a very high up time, but at a potential cost of increased latency. We guarantee that we’ll receive and ingest a webhook, but have some leeway where it may not be processed immediately during an outage.

On the product front, the product team was tasked with designing and implementing a better way of dealing with errors. Often when something goes wrong, multiple errors have the same underlying cause, so we're working on systems to be able to identify what those underlying causes are and then provide a specific UX around giving you information related to that underlying cause.

How does on-call work?

We have on-call rotations and only the members of the core team are on call. We have two approaches to how we structure salaries - one where you are on the on-call rotation and one where you aren't. There's a calendar of 12 days, and everybody does a three day rotation on those 12 days. There are two levels of escalation - firstly, the engineer that's on call responds and if they are unable to handle it by themselves then they can escalate it to our CTO.

We also have an incident response guide with a list of specific things to do in case of an issue, a knowledge base of what are the different things that could happen and how to respond to them.

Hiring process at Hookdeck

How does the application process work? What are the stages and what is the timeline?

The interview process goes through following stages:

  1. Intro call to see whether our interests align with the candidate and share a little bit more about what Hookdeck is working on.
  2. Follow up call for in-depth introduction, discussing the vision of the company and your role at Hookdeck.
  3. Technical evaluation (90 mins): Candidate discusses some of their previous projects that they have worked upon and explains their thought process. If the candidates are unable to discuss their previous work due to NDAs, they have an option to take a technical test instead.
  4. Team introduction: The candidate meets a few team members and co-founders.

What is the career progression framework? How are promotions and performance reviews managed?

Career progression is based on expertise. We implement a similar system to other companies in terms of seniority where each grade is specifically defined. A lot of the progression also comes from the growth of the company itself, so as the company is growing, you're also taking on more responsibility. Eventually we're going to be hiring other people that might, depending on what your intentions are, involve more responsibility for you, or not depending if you want to take those on.

We do monthly performance sync ups. Our company management structure is pretty flat right now but we are going to have a manager with whom you talk about your performance. We also do a yearly review where we also look at salary adjustments.

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