Software engineering and Slack: a love story

A look at how Slack was built to support developer success, from our origins to our present-day engineering best practices

Whoa, that happened fast

Back in 2009, we were a small team of software engineers, building a massive multiplayer game called Glitch.

We started using Internet Relay Chat (remember IRC?) to keep everyone on the same page. As work on the game progressed, we kept wishing our IRC channel could do more than just basic communication. So we found ourselves tweaking it, adding to it, and building new ways to get things done faster.

Well, the game flopped, so we decided to focus on this new collaboration thing we’d developed. That was a good call. Because, we ended up with a great product-market fit: a really effective way for teams to work together.

Maybe that’s because we weren’t trying to “design” anything. There was no ego, and no speculation about some fictional user. We were the users. That’s how Slack was born.

Today, it’s become bigger than we’d ever imagined—and its adoption by dev teams of all sizes is a major reason. Yes, Slack is used in pretty much every department and discipline, but software engineering is where it all started, and is still the source of a lot of the user love that keeps us coming to work smiling. It’s hugely gratifying that we’re able to create something that has a direct impact on the daily working lives of developers.

This guide is a quick introduction to some of the ways Slack helps developers. We hope it helps explain why software engineers seem to like Slack so much.

Why Slack fits software engineering so well

Slack is used by all kinds of non-technical teams, every day. It seems to organically adapt to the work it’s supporting.

But Slack seems to fit software engineering like a glove. After all, this is a pretty specialized kind of work.

When you think about it, all work is getting more and more like this. But software engineering is an ideal use case. It demands a kind of collaboration that just can’t happen with email and meetings. This kind of work needs a new kind of collaboration.

Slack: the channel-based messaging platform

People who’ve never used Slack think of it as a messaging app. It’s way more than that. It adapts to the way different teams like to work, to their existing software choices … and to change.

  • Channel-based messaging

This lets teams spin up channels dedicated to specific tasks, projects or issues. Like a #devel-new-site channel where all developers meet to work on the new website. Or a #triage-mobile-app channel where teams work together to squash bugs on the mobile app.

Channels are much better than one-to-one messages or closed email threads because they make it easy to include the right people on the right topics at the right time.

  • A searchable knowledge store

Knowledge is only valuable if it’s discoverable, and email attachments usually sink out of view to everyone but the people copied. Slack, on the other hand, is a single place where anyone can find all relevant documents, conversations and decisions—like those product specs or the discussion around that new feature.

  • An integration layer

With Slack, the software your developers spend the most time in (like GitHub, Jira, Jenkins and Trello) hooks into the place where work is discussed every day. This minimizes the constant context switching that comes from working across many different apps.

Note: Bringing these three functions together in one place makes each one of them far more powerful. The platform is far greater than the sum of its parts.

Benefits to software engineering teams

The right channel-based messaging platform directly influences the things that are most important to every engineering team: better code, delivered faster; improved service reliability; and a better developer experience (so you keep your talent happy). Any software that helps you do all that is probably worth looking into.

“Slack is a living documentation hub, and everything is searchable.”

Malika RajvanshySenior Engineer, Slack

IDC helped us put some numbers to our claims: Engineering teams use Slack to do more.

How Slack streamlines the whole software engineering process

Our dev teams are some of the most sophisticated users of Slack for software development—all our dev teams live in it. But every day we still hear about new use cases and interesting apps and integrations that software teams are deploying.

Let’s walk through some of them, organized by stages in the software development cycle.


Slack helps product managers, designers and engineers agree on what they’re building and why.

Slack channel details
Slack thread discussing feedback form for users in app
  • Kick off the whole process with a single channel for a new product or feature

Maybe it’s called something like #featurenew-app. Now there’s a single place to scope out the project, gather feature requirements, discuss alternatives, and make fundamental calls on functionality and UX.

  • Sharing documents here makes everything discoverable

Slack integrates beautifully with Google Docs, so all docs are a click away for contributors and new joiners alike.

  • Got a question? Pop it into the channel

Launch a discussion and come to a resolution for all to see. Now there’s a permanent record.


Slack helps devs orchestrate the many moving parts of a large code base, speeding up development and improving quality. When it’s time to start coding, Slack makes sure the whole team is working together:

  • A #devel-product-name channel is the home for everything

Including day-to-day work across engineering and QA, pull requests, code merges, design revisions, daily stand-ups, discussions, and so on.

  • A central hub for code review

Slack supports whatever process you use for branching, merging, reviewing and releasing code, whether that’s developing on version branches, feature branches or from a merged master.

Git integrations (with GitHub, Bitbucket or your chosen repository) bring all change alerts into Slack.

  • A new kind of stand-up

Stand-up meetings are an important part of agile development, but they don’t have to be face to face. Dev teams use Slack for stand-ups, whether every morning or every week, and have synchronous meetings or video calls only when they make sense (for many devs, the best meeting is a canceled one).

Integrations with software like Standuply automatically push summary reports into Slack so your teams can share goals and tasks, track business metrics, post meeting notes, and monitor the team’s progress and happiness.

Checkpoint integration in Slack posting pull request in channel

Promote code reuse: Code reuse is a core principle of efficient engineering teams, but it’s a challenge when you have hundreds of developers contributing to many different products. Before writing any new code, your devs can search across all Slack channels to see if anyone else has already built something similar. Next step: Ask in the right channels, “Has anyone made a date picker yet?” Stop recoding the wheel.

Create and share code using snippets: Snippets make it easy to share code, configuration files and log files directly in Slack. Colleagues can download them, view the raw file and leave comments.

Slack in action

Extensibility at its core

Slack doesn’t try to do the work of the software your teams already use, like PagerDuty, GitHub or Jenkins.

Instead, Slack simply unites all these different apps, bringing the relevant information from them into the channels where the work is being discussed (and inviting actions in those applications, triggered from inside Slack).

“Anytime I’ve seen a Slack integration, I’ve turned it on. It’s provided so much value and helped us save so many extra steps in our process.”

Thomas LawlessSenior Software Engineer, IBM

These integrations help developers do what they love to do: create systems that just work. The examples shared throughout this guide are just that—examples. There are as many ways to use Slack as there are software teams using it.


Testing is woven into the modern development/deployment process. Slack supports a dynamic, collaborative, transparent approach to testing.

Continuous integration runs your testing suite against every merge with each new chunk of code. Slack streamlines the process in lots of ways, big and small:

  • A #testing–feature channel coordinates QA

Let the QA team collaborate with devs in an open forum.

  • Jira integration automates test workflows

Capture issues in Slack and get them into the pipeline automatically. Send customizable notifications from Jira into your channels. Quickly assign issues to people and know they’re recorded where they belong.

Some teams use Slack to automatically move change requests into a new channel, updating Trello or Asana at the same time.

  • Break out a channel for each client

With dedicated testing channels for iOS, Android and web.

Jira slash command in Slack

Working with Jenkins

A lot of teams use Jenkins as their continuous integration server. It didn’t take long for them to work out new ways to integrate Jenkins with Slack to automate all sorts of routine development tasks.

One example: A software team’s custom Slack integration spins up a Jenkins server running a big testing suite whenever a developer opens a pull request.

When the tests have been run, the notifications pop up in the right Slack channels. If the code fails the test, a notification is sent to the developer.


Continuous delivery always calls for lots of small code releases, deployed frequently. Slack helps engineering teams streamline some of that by automating workflows and notifications.

An example: One of our own software teams wrote an app, called Deploy Wizard, that integrates with ops and communicates the status of the code in channel. It starts with a “canary” stage (a tiny release to catch any sudden fails) and then progresses through 10%, 25%, 75% and 100% of the user base.

Deploy Wizard integration in Slack posting staging updates

Deploy Wizard pings the right developers and channels in Slack as the deployment progresses. The whole thing is managed by the on-duty deploy commanders (trained engineers, working on three-hour shifts).

If developers want to test their code in the staging environment, they specify that with their merge request. The deploy will stop staging until a developer reports that he or she has tested the code into the #deploys channel.

Some dev teams use slash commands (like / deploy_productname_staging) to trigger a deploy right from Slack. Automated messages show when the deployment has succeeded, with a link to go and check it (or a button to push it to production).


Dev teams use Slack to triage trouble tickets, detect incidents in record time and swarm around issues.

  • All issues flow through the #triage product-name channel

Including reports from customer support (manual or via integrations with tools like Zendesk).

  • Integrations bring all alerts into one place

Instead of expecting devs to monitor email or check into dashboards, Slack becomes the single place where all alerts find the best people to respond.

Aggregating PagerDuty events or Asana tickets and posting them to the right channels reduces incident resolution times and creates a triage trail. Team members can work together on triggering, viewing, acknowledging and resolving incidents right from Slack.

Similarly, Slack can pull all web, transaction, server and mobile alerts from New Relic into a Slack channel for fast response. Anyone curious about the incident can just pop into the channel and read about it. This reduces managers interrupting the incident responders for constant updates. It’s all there.

Emoji and reacji help triage issues and trigger workflows

Reacji are an efficient way to capture the responses of team members—but they’re also a way to trigger automated workflows. An app collects these so they can be aggregated, flagged and actioned. Any open issues (eye emoji but no check mark) are shown in PagerDuty.

An automated #decisions channel: Some teams use the gavel emoji to indicate when a decision has been made. A bot then pushes all these decisions to a #decisions channel, where management can see the flow of decisions—and team members can easily search.

And we built a bot that collects and reports on these in a dedicated channel.

The people side

Software engineers are in demand. To keep your talent, you need to give them the best employee experience you can. The right tools can play a big role in this: helping reduce work friction, foster transparency, automate routine tasks, and help work across teams.

Talk to any software engineering team that uses Slack. Ask to see how they use channels, apps and integrations. Then ask what they’d do without it.

Onboarding new devs

Two new developers join the team. How do you get them up to speed?

Old way: Lots of onboarding meetings and a bunch of forwarded email threads to try to figure out.

New way: Invite them to the #dev–new–product channel to review the pinned posts, like:

  • The product spec
  • The tech spec
  • The designs

If these are Google Docs, Dropbox or OneDrive, they’ll always be kept up to date. They can also scan through all previous conversations, decisions and the people involved. Now, that’s how you onboard a new dev.

That’s how software engineers use Slack

So that’s our quick tour of how Slack helps software teams streamline, automate and accelerate their work. We hope we got across the main points:

  • This is a new thing: Slack helps engineers work in new ways. It’s way more than a messaging app.
  • It’s super-flexible: Letting your teams “make it their own” with channels, apps and integrations that reflect the way they like to work.
  • It helps you get more from your existing software: From GitHub and Bitbucket to Jenkins, Jira, PagerDuty, New Relic, Zendesk—whatever your devs, product, QA and support people use, they’ll use those tools more efficiently by bringing their work together in Slack. In fact, there are more than 2,200 apps in our App Directory today.
  • It adds value at every stage of the development cycle: From planning to developing, testing, deploying and operating.

Software engineers love it: Which means they’ll adopt it and expand their use over time.

“We have what we like to call an ‘end-to-end delivery pipeline’ that starts with source code and goes all the way through to production deployment. And now we have Slack integrated into all the key milestones in that process.”

Thomas LawlessSenior Software Engineer, IBM

If you’d like to see more, set up a demo—or ask one of our devs to show you around our own Slack instance. We’re proud of it.

Note a piè di pagina

  1. IDC research, The Business Value of Slack, 2017, sponsored by Slack

Questa risorsa è stata utile?



Grazie mille per il feedback!


Grazie per il feedback!

Ops! Si è verificato un problema. Riprova più tardi.