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Added 1 month ago
Inside sales specialist (iss)
Probewell Lab Inc.
Québec, QC
Probewell designs and manufactures specialized test equipment for electric utilities throughout North America and international markets. As we continue to grow, we are looking for a…
Added 1 month ago
Senior Mixed-Signal Designer - Acacia (Hybrid)
Cisco Systems Canada Co.
Kanata, ON
This is a hybrid role that can be performed three days per week from our Ottawa office
Added 1 month ago
FH
Clinical pharmacist - vancouver general hospital
Fraser Health Authority
Vancouver, BC
- $54.49 to $68.1 CAD / hour
…demographic information, reviewing patient charts and laboratory test results, meeting with the patient and health care team to assess clinical response of the patient to medication therapy…
Added 1 month ago
FH
Clinical pharmacist - vancouver general hospital
Fraser Health Authority
Vancouver, BC
- $54.49 to $68.1 CAD / hour
…demographic information, reviewing patient charts and laboratory test results, meeting with the patient and health care team to assess clinical response of the patient to medication therapy…
Added 1 month ago
FH
Clinical pharmacist - downtown community health clinic
Fraser Health Authority
Vancouver, BC
- $54.49 to $68.1 CAD / hour
…demographic information, reviewing patient charts and laboratory test results, meeting with the patient and health care team to assess clinical response of the patient to medication therapy…
Added 1 month ago
M(
Math Instructor / Tutor
Mathnasium (ID: 8606501)
Toronto, ON
- $18 to $20 CAD / hour
All applicants will be required to take a math literacy test to demonstrate math proficiency, and provide work authorization.
Added 1 month ago
Patient Service Technician, Temp (Orleans)
Cape Cod Healthcare
Orléans, ON
3. Processes laboratory specimens according to the test methodology guidelines for the appropriate testing site; centrifuging samples, pouring off serum or plasma, keeping sample at optimum…
Added 1 month ago
Patient Service Technician
Cape Cod Healthcare
Orléans, ON
3. Processes laboratory specimens according to the test methodology guidelines for the appropriate testing site; centrifuging samples, pouring off serum or plasma, keeping sample at optimum…
Added 1 month ago
Technicien(ne) ophtalmique (Opticien(ne) ou diplômé(e) sciences)
Vision Group
Montréal, QC
To apply, you must possess one of the following qualifications:
Added 1 month ago
Gestionnaire TI – Infrastructure, infonuagique et cybersécurité
Vision Group
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Added 1 month ago
Manager, Transaction Readiness | Gestionnaire, Règlements par transactions
Canada Deposit Insurance Corporation
Ottawa, ON
…the wider complement of CDIC staff and works with others to test and strengthen how the organization responds. While working alongside those who conduct significant quantitative analysis,…
Added 1 month ago
Contract - UAS Pilot
Candrone
AB
Ability to pass the GRID test for hotspot detection
Added 1 month ago
SH
Environmental Services Partner - Environmental Services - Regular Part-Time 2025-13764ESP
Sunnybrook Health Sciences Centre
Toronto, ON
- Part-time
Must have previous experience in Environmental Services · Must have obtained a score of 70% or greater on the Environmental Services Core Competency test
Added 1 month ago
Clinical Laboratory Geneticist - Molecular Diagnostics - Casual 2025-14126 (2025-14126)
Sunnybrook Health Sciences Centre
Toronto, ON
Interpreting and reporting of clinical molecular genetic test results for oncology and inherited diseases
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SH
Application Administrator, HIS - Project REACH - Temporary Full-Time 2025-14684 (REVISED)
Sunnybrook Health Sciences Centre
Toronto, ON
- Full-time
Oversee test and sandbox environments to support safe configuration and validation.
Added 1 month ago
Experienced Police Constable
City of Delta
BC
Physically fit and in excellent health; able to pass the POPAT (Police Officer’s Physical Abilities Test) and a medical examination
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New Police Recruit
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Physically fit and in excellent health; able to pass the POPAT (Police Officer’s Physical Abilities Test) and a medical examination
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SH
Application Administrator Lead - Project REACH - Temporary Full-Time 2025-15781
Sunnybrook Health Sciences Centre
Toronto, ON
- Full-time
Oversee environment management across test, training, and production instances, ensuring capacity, performance, and security standards are met.
Added 1 month ago
SH
HIS Specialist - Temporary Full-Time - Project REACH 2025-15938 (REPOST)
Sunnybrook Health Sciences Centre
Toronto, ON
- Full-time
Guide workflow design and build, test the system, and analyze technical issues associated with the applicable software
Added 1 month ago
SH
Environmental Services Partner - Environmental Services - Temporary Part-Time (2026-15997)
Sunnybrook Health Sciences Centre
Toronto, ON
- Part-time
Must have previous experience in Environmental Services · Must have obtained a score of 70% or greater on the Environmental Services Core Competency test
Added 1 month ago
SH
Environmental Services Partner - Environmental Services - Temporary Part-Time (2026-16199)
Sunnybrook Health Sciences Centre
Toronto, ON
- Part-time
Must have previous experience in Environmental Services · Must have obtained a score of 70% or greater on the Environmental Services Core Competency test
Added 1 month ago
Quality Control Manager
Brymark Installations
Coquitlam, BC
Produce, review, and monitor Inspection and Test Plans (ITPs), inspection reports, checklists, forms, and quality documentation.
Added 1 month ago
BI
QA/QC Inspector
Brymark Installations
Port Coquitlam, BC
- $65 to $75 CAD / hour
Coordinate and track inspections, test results, and quality records throughout the project lifecycle.
Added 1 month ago
SH
Environmental Services Partner - Environmental Services - Temporary Part-Time - 2026-16923
Sunnybrook Health Sciences Centre
Toronto, ON
- Part-time
Must have previous experience in Environmental Services · Must have obtained a score of 70% or greater on the Environmental Services Core Competency test
Added 1 month ago
CM
Weekend 310t apprentice or licensed mechanic- challenger (cambridge)
Challenger Motor Freight Inc. - Corporate Headquarters
Cambridge, ON
- $27 to $42 CAD / hour
Must have suitable tools or willingness to purchase prior to hire

Cerebras Systems

Staff GPU Inference SDET

Toronto, ON, Canada

Apply on jobs.ashbyhq.com About employer

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Job details

Experience: 8+ years of software engineering experience as an SDET, Infrastructure Quality Lead, or Systems Test Engineer.
Posting language: English
Posted: Sep 9, 2026

Original job description

Cerebras Systems builds the world's largest AI chip, 56 times larger than GPUs. This architecture allows Cerebras to deliver industry-leading training and inference speeds; over 10 times faster than GPU-based hyperscale cloud inference services.

This order of magnitude increase in speed is transforming the user experience of AI applications, unlocking real-time iteration and increasing intelligence via additional agentic computation.

Cerebras works with the leading model labs, global enterprises, and cutting-edge AI-native startups. OpenAI recently announced a multi-year partnership with Cerebras, to deploy 750 megawatts of scale, transforming key workloads with ultra high-speed inference.

About the Role
As a Staff GPU Inference SDET, you will be the founding quality, reliability, and validation lead for a new GPU Inference Development team. Working closely with engineering leads and cross-functional systems infrastructure teams, you will design, build, and scale the end-to-end release qualification and automated test ecosystem for our GPU inference stack and rack-scale accelerated compute fleets. In this high-impact role, you will be responsible for building automated test suites to validate multi-node GPU cluster bring-up, verifying prefill worker optimizations, testing open-source and custom serving engines, and ensuring numerical correctness and performance stability under real-world streaming workloads. You will be the primary technical anchor ensuring production-grade reliability, fault isolation, and peak inference performance across accelerated GPU infrastructure.

WHAT YOU’LL DO

Build GPU Release Qualification Systems:

Design and implement automated test automation frameworks, regression gates, and release qualification pipelines for the complete GPU inference stack - spanning custom API services, model-serving workers, container runtimes, serving engines, driver stacks, and firmware.

Inference Serving & Workload Validation:

Benchmark and stress-test distributed LLM serving frameworks, focusing on prefill vs. decode worker performance, continuous batching, prefix caching, KV-cache efficiency, and tensor/expert parallelism.

Performance & Performance Modeling Verification:

Build automated workload replay and benchmarking tools to validate GPU performance models. Track critical serving metrics including Time-to-First-Token (TTFT), Inter-Token Latency (ITL), request throughput, tail latency (P99), and capacity efficiency.

Numerical Correctness & Quality Gates:

Build validation infrastructure to ensure model accuracy, precision stability (FP16/FP8/quantization), determinism, and output correctness across software updates, kernel fusions, and hardware revisions.

Fault Injection & Fleet Resilience:

Engineer chaos engineering and fault-injection suites to simulate node failures, inter-node network degradation, GPU memory leaks, driver/firmware mismatches, and automated recovery paths for multi-node GPU clusters.

Observability & CI/CD Integration:

Integrate automated test pipelines with telemetry tools (e.g., Prometheus, Grafana) to turn one-off investigations into repeatable engineering gates and continuous performance monitoring.

REQUIREMENTS:

8+ years of software engineering experience as an SDET, Infrastructure Quality Lead, or Systems Test Engineer.

GPU & Cluster Infrastructure Expertise:

Hands-on experience bringing up, provisioning, and validating multi-node GPU clusters (NVIDIA or AMD ecosystem) across public cloud infrastructure or enterprise data center environments.

Inference Stack Knowledge:

Deep understanding of LLM serving engines and distributed runtimes, including prefill vs. decode disaggregation, KV-cache management, and dynamic batching.

Automation & Scripting:

Expert-level Python programming skills with extensive experience designing custom test automation frameworks, diagnostic tooling, and CI/CD integration.

Orchestration & Networking:

Strong proficiency with container orchestration tools (e.g., Kubernetes, Slurm, Ray) and high-performance cluster interconnects (e.g., InfiniBand, RoCE, NCCL).

Failure Analysis & Debugging:

Proven background in root-cause analysis across software/hardware boundaries, stress testing, and node failure simulation in distributed systems.

NICE TO HAVES:

Direct experience with either AMD (ROCm / HIP) or NVIDIA software stacks.
Experience building workload replay tools, ML evaluation pipelines, or MLPerf Inference benchmark suites.
Familiarity with low-level kernel profiling tools (PyTorch Profiler, NVTX, ROCm profilers) or C++

Why Join Cerebras

People who are serious about software make their own hardware. At Cerebras, we have built a breakthrough architecture that is unlocking new opportunities for the AI industry. With dozens of model releases and rapid growth, we’ve reached an inflection point in our business. Members of our team tell us there are five main reasons they joined Cerebras:

Build a breakthrough AI platform beyond the constraints of the GPU.
Publish and open source their cutting-edge AI research.
Work on one of the fastest AI supercomputers in the world.
Enjoy job stability with startup vitality.
Our simple, non-corporate work culture that respects individual beliefs.

Find out more about what it's like to work at Cerebras here!

Apply today and become part of the forefront of groundbreaking advancements in AI!

Cerebras Systems is committed to creating an equal and diverse environment and is proud to be an equal opportunity employer. We celebrate different backgrounds, perspectives, and skills. We believe inclusive teams build better products and companies. We try every day to build a work environment that empowers people to do their best work through continuous learning, growth and support of those around them.

This website or its third-party tools process personal data. For more details, click here to review our CCPA disclosure notice.

Apply on jobs.ashbyhq.com About employer

More about this job

Responsibilities

The Staff GPU Inference SDET will build automated test suites and release gates that check GPU clusters, LLM serving engines and model accuracy. The role also designs fault-injection tests and connects performance monitoring to CI/CD pipelines.

Requirements

Cerebras Systems needs 8+ years of software test or infrastructure quality experience. Candidates must have hands-on GPU cluster bring-up experience, knowledge of LLM serving engines, expert Python and strong Kubernetes, Slurm or Ray skills.

Skills

Python
CI/CD integration
GPU cluster provisioning
NVIDIA GPU stack
AMD ROCm/HIP
Kubernetes
Slurm
Ray
InfiniBand
RoCE
NCCL
LLM serving engines
prefill and decode disaggregation
KV-cache management
dynamic batching
performance benchmarking
fault injection
chaos engineering
root-cause analysis
Prometheus
Grafana
PyTorch Profiler
NVTX
C++

Keywords

SDET
GPU inference
LLM inference
Python
test automation
release qualification
CI/CD
Kubernetes
Slurm
Ray
InfiniBand
RoCE
NCCL
NVIDIA
AMD ROCm
HIP
PyTorch Profiler
NVTX
Prometheus
Grafana

Seniority

senior

Department

software_development

Tools

Python
Kubernetes
Slurm
Ray
Prometheus
Grafana
PyTorch Profiler
NVTX
InfiniBand
NCCL

Languages

English

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Work requirements

Jobs in Canada