Senior Platform Engineer, Developer Experience

Rootly is hiring a Senior Platform Engineer, Developer Experience in Toronto, Canada. Level rates it ; you can apply on Rootly.

Level's read on this job

On Level's scale, this role is Little AI ●○○○: aI is not part of the work.
The posting mentions CI/CD, Kubernetes and Docker among its tools and skills.
Level classes it as a senior role.
Rootly has 16 other open roles on Level.
Posted within the past week.

AI in this role

Own and optimize the development pipeline, CI, and test infrastructure to improve engineer productivity and deployment speed.

ci-cdkubernetesdocker

platform-engineeringdeveloper-experienceci-pipelinestest-infrastructure

About Rootly

At Rootly, we are on a mission to be the go-to way companies respond when things go wrong, helping every organization be more reliable. We do this by building an industry-leading incident management platform that allows companies around the world to consistently and quickly resolve incidents. We are not simply transforming an industry, we are carving out a new multi-billion-dollar category ourselves and need incredible talent to achieve this ambitious goal together.
Customers love Rootly. Some of the fastest-growing companies around the world such as NVIDIA, DoorDash, Uber, Canva, Tripadvisor, Squarespace and more rely on Rootly to power their critical incident management process. They obsess over our delightful enterprise-ready platform and unique partnership model. See why our customers have reviewed us 5 stars on G2.
Investors love Rootly. We are backed by some of the most respected funds in the world from Y Combinator to operators like the CTO of Dropbox and GitHub. We'd be happy to disclose our entire funding and profitability picture live during the interview. As a culture we relentlessly put transparency first. We conduct monthly financial reviews as a team so everyone has a pulse on the health of the business and publish what we are building in our weekly changelog.

About the Role

As a Senior Platform Engineer focused on Developer Experience, you'll own the path from a developer's laptop to production: CI, test infrastructure, deploy trains, and staging. You'll measure where engineers lose time, cut merge-to-production time, and make flaky tests rare.
Product engineers are your customers. You'll work with our platform engineering leader and our QA team, and your work will give time back to every engineer at Rootly. As Rootly grows and AI speeds up development, more pull requests flow through the same pipeline every month, so the impact of this role compounds.

What You'll Do

Instrument the delivery pipeline end to end so we know where time goes between merge and production.
Cut merge-to-production lead time and keep it down as the team and codebase grow.
Find and fix flaky tests at the source, and build tooling that catches new flakiness early.
Own our CI pipelines and deploy trains, including smoke gates and rollback.
Untangle staging so teams stop waiting on each other to test changes.
Improve local development and onboarding so new engineers ship in their first week.
Track developer experience numbers like build time, deploy frequency, and change failure rate, and share progress openly.

What You'll Need

We care about impact, ownership, and technical judgement. Degrees and big-name logos are not required. What matters is your ability to execute, influence, and teach.

Minimum Qualifications

5+ years building software in production, with significant time on modern CI/CD (such as Buildkite, CircleCI, GitHub Actions, or Argo CD), build systems, or developer tooling.
Hands-on experience running and speeding up CI pipelines for a large codebase.
Experience diagnosing and fixing test flakiness and test infrastructure problems.
A developer experience mindset: you treat other engineers as customers and measure whether your tools help them.
Comfortable working in a large Rails monolith as well as in infrastructure.
You write production-grade software, and you explain tradeoffs clearly to product teams and leadership.

Preferred Qualifications

Experience running CI systems at scale, and with deploy trains or merge queues.
Experience with test parallelization and test selection for Ruby or RSpec suites.
Experience building ephemeral or shared staging environments.
Experience with Ruby and Go.

What Success Looks Like

By 6 to 12 months you will have:

Instrumented the pipeline end to end, with a shared dashboard for build time, lead time, deploy frequency, and change failure rate.
Meaningfully cut merge-to-production lead time, and kept it there as headcount and pull request volume grew.
Made flaky tests rare, with tooling that flags new flakiness before it spreads.
Removed staging as a bottleneck, so teams test changes without waiting on each other.
Got new engineers shipping to production in their first week.

Our Tech Stack

Backend: Ruby on Rails, PostgreSQL, OpenSearch, Redis, Sidekiq, AWS Lambda, ECS, Kafka, DynamoDB
Frontend: Turbo, Stimulus, ViewComponents
Infrastructure: AWS, Terraform (IaC), Datadog

Why Rootly?

We're not just another startup. We're building something category-defining and want teammates who crave ownership, love solving hard problems, and thrive in a high-bar, high-impact environment.
Here's what you can expect when you join Rootly:

Competitive compensation and early equity in a fast-growing, venture-backed company.
Comprehensive medical, dental, and vision coverage.
3 weeks of vacation, plus unlimited sick and mental health days, and a company-wide end-of-year shutdown to recharge.
$500 stipend for home office setup.
Unlimited token usage and access to AI tools.
A fast-moving, high-impact environment where your leadership and ideas directly shape the future of the company.

Our team is growing, and this is a newly created vacancy that we may hire more than one person to fill.
As we build out the team, we may use AI to support parts of our interview process, like reviewing assessments, but it's a tool that helps our people, not a substitute for their judgement.
If this sounds like the kind of challenge and opportunity you're looking for, apply now and let's build something great together.
Accommodations are available on request at any stage of our recruitment process. Contact recruitment@rootly.com and we will work with you to meet your needs confidentially.
Rootly is an equal opportunity employer. We do not discriminate on the basis of race, ancestry, place of origin, colour, ethnic origin, citizenship, creed, sex, sexual orientation, gender identity, gender expression, age, record of offences, marital status, family status, disability, or any other ground protected by the Ontario Human Rights Code or applicable law.

How we rate this

Senior Platform Engineer, Developer Experience at Rootly rates 10 out of 100 for how much of the daily work is AI. That makes it Little AI (AI Level 1 of 4). The level is about AI in the job, not seniority.

Classification

Little AI. AI is not part of the work.

●●●● Builds AI80 to 100
●●●○ Works on AI60 to 79
●●○○ Uses AI40 to 59
●○○○ Little AI0 to 39

Levels come from how often the tools, models and workflows of the role are named in the posting itself. Read the description and count the AI tools, models and workflows it names.

Key facts

Senior Platform Engineer, Developer Experience is an open job at Rootly.
Level rates this role AI Level 1 of 4: Little AI.
The role is based in Toronto, Canada.
The job was posted on October 28, 2026.
Seniority: senior.
Applications are handled by Rootly. Apply on Rootly

Prepare for this job

Built from this posting and from similar jobs on Level.

Skills and AI tools this role asks for

Platform EngineeringDeveloper ExperienceCi PipelinesTest InfrastructureCI/CDKubernetesDocker

Questions you could be asked

Tell me about a project where platform engineering was part of your work. What did you do?
Tell me about a project where developer experience was part of your work. What did you do?
Tell me about a project where ci pipelines was part of your work. What did you do?
Tell me about a project where test infrastructure was part of your work. What did you do?
Walk me through how you've used CI/CD in your day-to-day work.

Adapt your resume

List these exact terms on your resume: Platform Engineering, Developer Experience, Ci Pipelines, Test Infrastructure, and CI/CD. An applicant tracking system matches the wording, not the idea.
Attach one line of real, concrete experience to at least one of them. A tool named with nothing behind it rarely survives a human read.

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