Jobs in Canada

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Added 1 day ago
Education Assistant Relief
Beausoleil First Nation
Christian Island, ON
Must have experience working with youth/children/proficiency in facilitation/leading youth
Added 1 day ago
NC
Educational Assistant (casual) 2026-2027
Niagara Catholic District School Board
Welland, ON
- $26.91 CAD / hour
Casual work could lead to long term placements and/or eventual permanent positions.
Added 1 day ago
DS
Supply Designated Early Childhood Educators (DECE's)
District School Board of Niagara
St. Catharines, ON
- $187.61 CAD / day
- Contract
Interested applicants must have:
Added 1 day ago
DS
Supply Educational Assistants
District School Board of Niagara
St. Catharines, ON
- $198.04 CAD / day
- Contract
Interested applicants must have:
Added 1 day ago
DS
Supply Interpreter
District School Board of Niagara
St. Catharines, ON
- $30.36 CAD / hour
…provides opportunities for long-term placements that could lead to full-time permanent employment. This means you can build a rewarding and stable career within the organization. Benefit…
Added 1 day ago
DS
Supply Library Technician
District School Board of Niagara
St. Catharines, ON
- $27.09 CAD / hour
…provides opportunities for long-term placements that could lead to full-time permanent employment. This means you can build a rewarding and stable career within the organization. Benefit…
Added 1 day ago
DS
Supply Food Services Technician
District School Board of Niagara
St. Catharines, ON
- $26.18 CAD / hour
…provides opportunities for long-term placements that could lead to full-time permanent employment. This means you can build a rewarding and stable career within the organization. Benefit…
Added 1 day ago
Program Manager, National and International Collaborations in Precision Oncology
The Hospital for Sick Children (SickKids)
Toronto, ON
…healthcare centres in the world. As innovators in child health, we lead and partner to improve the health of children through the integration of healthcare, leading-edge research and…
Added 1 day ago
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Social Media Manager
Reitmans (Canada) Ltée/Ltd
Montréal, QC
- Full-time
- Hybrid
Own the social vision. Lead and evolve RW&CO’s social media strategy, content pillars and brand voice, keeping us relevant, distinctive and ahead of the conversation.
Added 1 day ago
ES
Project Administrator
Exergy Solutions Inc.
Calgary, AB
- Full-time
Advisory: Our experts lead clients through decarbonization strategies, technology integration, and process optimization. We provide the research, analysis, and guidance needed for…
Added 1 day ago
N
Hardware Engineer
NUVACORE
Markham, ON
- $140,000 to $250,000 USD / year
- Full-time
- Hybrid
REQUIREMENTS — MUST HAVE
Added 1 day ago
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Inside Sales Representative
JDI
Lower Sackville, NS
- Full-time
…Limited, you are part of a dynamic team of professionals who lead with integrity and are passionate about delivering results. With a culture that nurtures talent and creates an inclusive…
Added 1 day ago
C
Senior Analyst, Construction Finance
CMLS
Toronto, ON
- Full-time
- On-site
Lead the active management and sophisticated underwriting of high-impact ACLP lending opportunities, positioning projects for successful execution and funding.
Added 1 day ago
RC
Customer Service Manager - Patient Services
Randstad Canada
Orléans, ON
- $85,000 to $105,000 CAD / year
- Full-time
…empathetic, and results-driven Customer Service Manager to lead and elevate patient services operations for our premier healthcare client in Orleans,…
Added 1 day ago
Senior Platform Engineer (Auth0)
Okta
Toronto, ON
Drive and lead complex, cross-functional initiatives end-to-end, aligning multiple teams around technical strategies and ensuring successful delivery.
Added 1 day ago
A
Senior Manager, Tax
Altis
Mississauga, ON
- $70 to $85 CAD / hour
- Contract
…exposure to senior leadership. Youll have the opportunity to lead and develop a team, contribute to system implementations and business initiatives, and identify improvements that…
Added 1 day ago
AL
Senior Manager, GTM Systems
Air Labs, Inc.
Toronto, ON
- Full-time
- Hybrid
Air is hiring our founding GTM Systems lead to be the chief architect of the tech stack that powers our go-to-market organization. GTM Operations runs as an internal product team, and the…
Added 1 day ago
NG
Senior Analyst, Construction Finance
Nesto Group(e)
Toronto, ON
- Full-time
- On-site
Lead the active management and sophisticated underwriting of high-impact ACLP lending opportunities, positioning projects for successful execution and funding.
Added 1 day ago
A
Senior IT Solutions Designer
Axonify
Toronto, ON · Waterloo, ON
- Full-time
- Hybrid
Proven ability to independently plan and lead complex, cross-functional IT initiatives from scoping through delivery.
Added 1 day ago
Industry Development Manager
Lakeside Controls
Mississauga, ON
Lead Lakeside’s expansion into new high-growth markets, establishing our presence, developing strategic partnerships, and creating sustainable long-term growth opportunities in Data Center…
Added 1 day ago
Senior Integrated Marketing Manager, Verticals
StackAdapt
Canada
Lead the vertical strategy for StackAdapt’s marquee brand campaigns, adapting what's already in market before recommending anything new.
Added 1 day ago
Environmental and Regulatory Permitting Manager
IAMGOLD Corporation
Québec, QC
Lead governance of the project’s environmental and regulatory approval processes, track the regulatory critical path, and provide leadership with clear visibility into permit status,…
Added 1 day ago
AI
Integration Lead
Axya Inc.
Montréal, QC
- Full-time
- On-site
As Integration Lead, you own the strategy, architecture, and hands-on delivery of the integrations that connect Axya to our customers' ERP systems. Our integrations are custom-built…
Added 1 day ago
Account Manager
Bercon Rentals Inc.
Toronto, ON
Added 1 day ago
C
Senior Software Engineer, Query
CircleCI
Canada
- Hybrid
…think like the customer: every decision connects back to the developer sitting in front of a failing build at 2 am. We own the outcome: not just our slice of it, but the whole thing. If…

CircleCI

Senior Software Engineer, Query

Canada

Hybrid

Apply on circleci.com About employer

Applications open in a new tab.

Job details

Workplace: Hybrid
Posting language: English
Posted: Oct 16, 2026

Original job description

About CircleCI Engineering

CI/CD has been solved. Now it's being reinvented. AI agents don't just run pipelines. They write code, trigger builds, interpret failures, and propose fixes. The interfaces that developers use to understand and trust that work don't exist yet. We're building them.

At CircleCI, our guiding principles aren't posters on a wall. We learn fast: we run experiments, accept failure, and scale what works. We think like the customer: every decision connects back to the developer sitting in front of a failing build at 2 am. We own the outcome: not just our slice of it, but the whole thing. If that's how you already work, you'll fit here.

About the Query Team

Every pipeline, job, and test that runs on CircleCI generates data, and that history is one of our biggest advantages in an agentic software delivery lifecycle. Flaky test detection, test insights, pipeline search, and agents that reason about why a build failed all depend on fast, reliable access to it.

The Query team owns the system that makes this possible. We pull product data out of the transactional services that create it and store it in datastores built for historical and analytical workloads. We serve it through domain-level APIs to CircleCI's product teams and to customers through our public API. Our goal is to make storing data "fire and forget" for every other team, and querying it fast and dependable at a scale that keeps growing.

What You'll Do

Build AI-natively. AI is how we work. It's not a productivity layer on top of engineering, but the default starting point for how problems get approached and solved.
Shape how we store data at scale. Own and harden our ClickHouse-based storage layer. Design schemas for known and emerging access patterns, and tune ingestion and query performance to support production-scale data.
Build the pipelines that move our data. Design and own ingestion from event streams and durable workflows built on Temporal. Data should arrive reliably, stay queryable while it's in transit, and never slow down the critical path of the services that produce it.
Serve data to the product and to customers. Evolve our platform into the default path for historical queries. Make getting historical data easy, not a bottleneck. Teams should be able to get what they need quickly and with minimal hand-holding, while Query keeps enough visibility into how the data is used to optimize ingestion and reads across every consumer. Build in the indexing, caching, and tiered storage required to keep it performant.
Set technical direction. When the problem is complex or the answer isn't obvious, you lead the design discussion, write up the architecture decision, and make the call. You help decide which data domain we migrate next and how.
Champion observability. Use Honeycomb, Datadog, and Rollbar to understand ingestion lag, query latency, and data correctness. For a data platform, operational data drives stability, not just incident response.
Keep things moving. You take ambiguous data problems from design to production quickly, and you help the people around you move faster too.

You don't just patch problems, you ask why they happened. You'll fix the immediate issue, then solve the underlying team practice, process, or system that let it through.

What You'll Bring

AI-native engineering practices. You use AI tools daily and can speak to what you've built, where they changed your approach, and where they fall short.
Hands-on data experience. You've built or owned data-intensive systems such as ingestion pipelines, event-driven architectures, or analytical and time-series datastores. You understand the tradeoffs between transactional and analytical storage, and you've designed schemas and tuned queries for high-volume workloads. Experience with ClickHouse or another columnar database is a strong plus.
Backend depth in Go. You're strong in Go, or strong in a comparable language and eager to work in Go: interface design, data modeling, service integration, and concurrency. Familiarity with React and TypeScript is a plus, since you'll occasionally work on the product surfaces that display this data.
Distributed systems judgment. You understand delivery guarantees, idempotency, backpressure, and failure recovery. You know when to rely on a framework's reliability guarantees rather than building your own.
Technical leadership. You've led the design of complex systems and made tradeoffs deliberately. You leave foundations others can build on. You raise the quality bar through reviews, mentoring, and direct feedback, not just through the code you write.
A track record of shipping. 5+ years building and operating production backend systems. Your work has served real users, and you've treated latency, reliability, and correctness as design concerns.

Sound like you?

You care about how data powers the product, not just where it lives. You know how to make a datastore fast at scale, and have tuned schemas and queries against real production load. You think like a platform engineer, measuring your work by how much it unblocks the teams building on it. AI isn't a tool you reach for occasionally; it's a core part of how you approach and solve problems. If that sounds like you, we want to talk.

Canada Base Pay Range

$156,500 - $215,000 CAD

Expected salary range for San Francisco and the surrounding area.

US SF Bay Area (Metro Zone 3)

$185,000 - $255,000 USD

Expected salary range for specific metro areas including Boston, Washington DC, Denver, Los Angeles, New York, Portland, San Diego, and Seattle. These metro areas may change periodically.

US Metro Zone 2

$175,000 - $245,000 USD

Expected pay range for all other US locations not falling into Metro Zone 3 or Metro Zone 2.

US General

$165,000 - $225,000 USD

We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment. Please contact us to request accommodation.

About CircleCI

CircleCI is the world’s largest continuous integration/continuous delivery (CI/CD) platform, and the hub where code moves from idea to delivery. As one of the most-used DevOps tools - processing more than 3 million jobs a day - CircleCI has unique access to data on how the most effective engineering teams work, and the tools to help software companies successfully leverage the power of AI into their commercial applications. Companies like Hinge, HuggingFace, and Samsung use us to improve engineering team productivity, release better products, and get to market faster.

Founded in 2011 and headquartered in downtown San Francisco with a global, remote workforce, CircleCI is venture-backed by Base10, Greenspring Associates, Eleven Prime, IVP, Sapphire Ventures, Top Tier Capital Partners, Baseline Ventures, Threshold Ventures, Scale Venture Partners, Owl Rock Capital, Next Equity Partners, Heavybit, and Harrison Metal Capital.

CircleCI is an Equal Opportunity and Affirmative Action employer. We do not discriminate based upon race, religion, color, national origin, sexual orientation, gender, gender identity, gender expression, transgender status, sexual stereotypes, age, status as a protected veteran, status as an individual with a disability, or other applicable legally protected characteristics. We also consider qualified applicants with criminal histories, consistent with applicable federal, state and local law.

How CircleCI Uses AI in Hiring

At CircleCI, people make our hiring decisions. We use technology to support our recruiting team so they can spend more time on what matters most: getting to know you.

Where we may use AI

Job descriptions and messaging: AI may help draft job descriptions and role-specific messaging so they are clear and accurate.
Application review: For some roles, we use an AI tool to review applications, including resumes and application responses, against criteria our hiring team sets for the role. The tool generates a fit score and summary to help recruiters organize and prioritize applications.
Interview notes: With advance notice, an AI note-taking tool may join interviews to record, transcribe, and summarize the conversation. This lets interviewers focus on talking with you. You will be told before each interview, and you may opt out at any stage by letting your recruiter know. If you opt out, the tool will not join, and your candidacy is not affected.
Outreach: AI may help draft candidate outreach and scheduling messages, which our team reviews before sending.

Our commitment

AI does not make hiring decisions at CircleCI. Our recruiters and hiring teams review candidates and make every decision to advance or reject an application. No candidate is rejected based solely on an AI score. We have tools and processes in place to test for bias and to review how these tools perform, and we adjust our approach as AI technology and the laws that govern it change.

Your choices

You can ask for human-only review of your application, opt out of AI interview note-taking, request an accommodation, or ask questions about how we use AI. Contact recruiting@circleci.com. For how we handle your data, including retention, see our Privacy Policy.

Apply on circleci.com About employer

More about this job

Responsibilities

The Senior Software Engineer at CircleCI will design and run the systems that store and move product data, including ClickHouse storage and data pipelines. They will also build the APIs that let teams and customers query historical data quickly and reliably.

Requirements

Candidates need 5+ years building production backend systems, strong Go skills, and hands-on experience with data-intensive systems such as ClickHouse or other columnar databases. CircleCI also expects distributed systems judgment, technical leadership, and daily use of AI tools in engineering work.

Skills

Go
ClickHouse
Temporal
Honeycomb
Datadog
Rollbar
React
TypeScript
Schema design
Query performance tuning
Data ingestion pipelines
Event-driven architecture
Distributed systems design
Idempotency and backpressure
Caching and tiered storage
Indexing
API design
Technical design and architecture decisions
Code review and mentoring
Observability
AI-assisted software development

Keywords

Senior Software Engineer
Go
ClickHouse
columnar database
Temporal
event streaming
data pipelines
ingestion pipelines
time-series database
analytical database
data warehousing
schema design
query optimization
distributed systems
backend engineer
API development
Honeycomb
Datadog
Rollbar
CI/CD

Seniority

Senior

Tools

ClickHouse
Go
Temporal
Honeycomb
Datadog
Rollbar
React
TypeScript

Languages

English

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Work requirements

Jobs in Canada