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Added 1 hour ago
KC
Senior Embedded Software Designer
Kepler Communications Inc.
Toronto, ON
- Full-time
…real-time, continuous space communications while supporting advanced on-orbit compute and hosted payload…
Added 2 hours ago
FT
Machine Learning Engineer
FDE Times
Toronto, ON · Greater Toronto Area, Canada
- Full-time
As a Machine Learning Engineer At Reddit, You Will Design And Build Production ML Systems That Power Core Experiences Across The Platform, Including
Added 2 hours ago
FT
Senior Machine Learning Engineer
FDE Times
Toronto, ON · Greater Toronto Area, Canada
- Full-time
As a Machine Learning Engineer At Reddit, You Will Design And Build Production ML Systems That Power Core Experiences Across The Platform, Including
Added 6 hours ago
T
Technicien(enne) d’entretien d’aéronefs – Soutien technique/ Aircraft Maintenance Engineer – Product Support
Textron
Mirabel, QC
- Full-time
We’re more than aviation experts, we’re pioneers. We challenge what’s possible. From breaking the sound barrier to advanced tiltrotor systems. Today, Bell is shaping the future of aviation…
Added 6 hours ago
Senior Quality Assurance Engineer
NetBrain
Toronto, ON
NetBrain is looking for an experienced Senior QA Engineer to work on a variety of automation-related projects for our unparalleled network automation platform, powered by agentic-AI. We…
Added 8 hours ago
SM
RQ11673 – Report Developer – Junior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Junior Report Developer / Data Engineer with experience in developing, implementing, and maintaining enterprise data solutions using modern Azure cloud technologies. The…
Added 8 hours ago
SM
RQ11673 – Report Developer – Junior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Junior Report Developer / Data Engineer with experience in developing, implementing, and maintaining enterprise data solutions using modern Azure cloud technologies. The…
Added 8 hours ago
SM
RQ11673 – Report Developer – Junior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Junior Report Developer / Data Engineer with experience in developing, implementing, and maintaining enterprise data solutions using modern Azure cloud technologies. The…
Added 8 hours ago
SM
RQ00245 – Machine Learning Engineer – Senior
S M Software Solutions Inc
Toronto, ON
- Full-time
We are seeking a highly skilled Senior Machine Learning Engineer with advanced hands-on experience in Azure Machine Learning, Microsoft Foundry/Azure AI Foundry, Machine Learning Operations…
Added 8 hours ago
SM
RQ00245 – Machine Learning Engineer – Senior
S M Software Solutions Inc
Toronto, ON
- Full-time
We are seeking a highly skilled Senior Machine Learning Engineer with advanced hands-on experience in Azure Machine Learning, Microsoft Foundry/Azure AI Foundry, Machine Learning Operations…
Added 8 hours ago
SM
RQ00245 – Machine Learning Engineer – Senior
S M Software Solutions Inc
Toronto, ON
- Full-time
We are seeking a highly skilled Senior Machine Learning Engineer with advanced hands-on experience in Azure Machine Learning, Microsoft Foundry/Azure AI Foundry, Machine Learning Operations…
Added 8 hours ago
H
eTrading Full Stack Engineering - Network
HSBC
Toronto, ON
- $91,600 to $137,300 CAD / year
- Full-time
Engineer secures and resilient client-facing connectivity using appropriate routing segmentation and redundancy patterns and coordinate requirements testing and implementation with clients…
Added 10 hours ago
WI
Senior Process Engineer - Wastewater Treatment
WSP in Canada
Sarnia, ON
- Full-time
As a Senior Process Engineer – Wastewater Treatment, you will lead the planning, evaluation, design, commissioning, and optimization of municipal treatment facilities. You will combine…
Added 13 hours ago
KC
Junior Manufacturing Engineer
Kawartha Controls
Omemee, ON
- Full-time
Kawartha Controls is an advanced manufacturing company specializing in precision hydraulic manifolds, CNC machining, automation, and AI-assisted manufacturing systems. We are seeking a…
Added 15 hours ago
YE
Senior Mechanical Engineer
YJE Engineering
Calgary, AB
- Full-time
We are seeking an experienced Senior Mechanical Engineer to lead the design and delivery of HVAC, plumbing, and fire protection systems across a variety of sectors, including commercial,…
Added 16 hours ago
PC
Engineering Lead
PERI Canada
Calgary, AB
- Full-time
Develop formwork, shoring, and scaffolding solutions for a wide range of construction projects, utilizing PERI systems as needed (or assign to others). Ensure designs comply with all…
Added 18 hours ago
WI
Senior Process Engineer - Wastewater Treatment
WSP in Canada
London, ON
- Full-time
As a Senior Process Engineer – Wastewater Treatment, you will lead the planning, evaluation, design, commissioning, and optimization of municipal treatment facilities. You will combine…
Added 19 hours ago
SM
RQ00245 – Machine Learning Engineer – Senior
S M Software Solutions Inc
Toronto, ON
- Full-time
We are seeking a highly skilled Senior Machine Learning Engineer with advanced hands-on experience in Azure Machine Learning, Microsoft Foundry/Azure AI Foundry, Machine Learning Operations…
Added 19 hours ago
SM
RQ11673 – Report Developer – Junior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Junior Report Developer / Data Engineer with experience in developing, implementing, and maintaining enterprise data solutions using modern Azure cloud technologies. The…
Added 20 hours ago
Engineering Lead
PERI
Calgary, AB
Develop formwork, shoring, and scaffolding solutions for a wide range of construction projects, utilizing PERI systems as needed (or assign to others). Ensure designs comply with all…
Added 23 hours ago
WI
Senior Process Engineer - Wastewater Treatment
WSP in Canada
Guelph, ON
- Full-time
As a Senior Process Engineer – Wastewater Treatment, you will lead the planning, evaluation, design, commissioning, and optimization of municipal treatment facilities. You will combine…
Added 23 hours ago
WI
Senior Process Engineer - Wastewater Treatment
WSP in Canada
Kitchener, ON
- Full-time
As a Senior Process Engineer – Wastewater Treatment, you will lead the planning, evaluation, design, commissioning, and optimization of municipal treatment facilities. You will combine…
Added 23 hours ago
Supplier Quality Engineer
Westerkirk
Calgary, AB
The Supplier Quality Engineer reports to the Director of Quality for Manufacturing and the primary purpose of the role is to; develop, implement, and coordinate the supplier approval…
Added 1 day ago
Systems Engineering
BWXT
Peterborough, ON
We are looking for a Systems Engineer (Contract) for our Peterborough, Ontario site. BWXT NEC's Fuel Handling and Engineered Solutions group is involved in the design, manufacture,…
Added 1 day ago
H
Senior Fire Protection Engineer
HDR
Toronto, ON
- Full-time
We believe building engineering is more than systems and structures, it’s about powering progress and enabling innovation. As part of HDR’s Building Engineering Services Group, you’ll help…

FDE Times

Machine Learning Engineer

Toronto, ON, Canada
Greater Toronto Area, Canada, Canada

Full-time

Apply About employer

Applications open in a new tab.

Job details

Job type: Full-time
Apply by: Nov 25, 2026
Experience: 3-5+ years of experience building, deploying, and operating machine learning systems in production
Posting language: English
Posted: Nov 8, 2026

Original job description

Job Description

Reddit is a community of communities. It’s built on shared interests, passion, and trust, and is home to the most open and authentic conversations on the internet. Every day, Reddit users submit, vote, and comment on the topics they care most about. With 100,000+ active communities and approximately 130 million daily active unique visitors, Reddit is one of the internet’s largest sources of information. For more information, visit www.redditinc.com.

At Reddit, machine learning sits at the heart of how millions of people discover, connect, and engage with the world’s largest collection of human conversations. From powering personalized recommendations and search to optimizing advertising systems and marketplace dynamics, our ML engineers tackle some of the most interesting and impactful problems in large-scale applied machine learning.

We hire Machine Learning Engineers across both our Consumer and Ads organizations, giving you the opportunity to work on a wide range of high-impact problems across the Reddit ecosystem.

We are looking for Machine Learning Engineers who are excited to build systems end-to-end, from research and modeling to production deployment, - and who want to help shape the future of discovery, relevance, and monetization at Reddit.

If you love working on complex, real-world ML problems at massive scale, this role is for you.

What You’ll Work On

As a Machine Learning Engineer At Reddit, You Will Design And Build Production ML Systems That Power Core Experiences Across The Platform, Including

Personalized recommendations, search, and ranking systems that help users discover the most relevant content and communities
Intelligent advertising systems including ranking, bidding, measurement, and optimization
Content, Advertisers, and User understanding, from building foundational content/user representations to deriving insightful signals
Large-scale machine learning pipelines, model serving infrastructure, and real-time decision systems
Applied AI and LLM-driven experiences that improve relevance, discovery, and user engagement

You’ll work on high-impact systems that operate at internet scale and directly influence user experience, advertiser value, and business outcomes.

What You’ll Do

Design, build, and deploy production-grade machine learning models and systems at scale
Own the full ML lifecycle: from problem definition and feature engineering to training, evaluation, deployment, and monitoring
Build scalable data and model pipelines with strong reliability, observability, and automated retraining
Work with large-scale datasets to improve ranking, recommendations, search relevance, prediction, content/user understanding, and optimization systems.
Partner cross-functionally with Product, Data Science, Infrastructure, and Engineering teams to translate complex problems into ML solutions
Improve system performance across latency, throughput, and model quality metrics
Research and apply state-of-the-art machine learning and AI techniques, including deep learning, graph & transformers based, and LLM evaluation/alignment
Contribute to technical strategy, architecture, and long-term ML roadmap

Basic Qualifications

3-5+ years of experience building, deploying, and operating machine learning systems in production
Strong programming skills in Python, Java, Go, or similar languages, with solid software engineering fundamentals
ML Fundamentals: a strong grasp of algorithms, from classic statistical learning (XGBoost, Random Forests, regressions) to DL architectures (Transformers, CNNs, GNNs)
Hands-on experience with modern ML frameworks (e.g., PyTorch, TensorFlow)
Experience designing scalable ML pipelines, data processing systems, and model serving infrastructure
Ability to work cross-functionally and translate ambiguous product or business problems into technical solutions
Experience improving measurable metrics through applied machine learning

Preferred Qualifications

Experience with recommender systems, search/ranking systems, advertising/auction systems, large-scale representation learning, or multimodal embedding systems
Familiarity with distributed systems and large-scale data processing (Spark, Kafka, Ray, Airflow, BigQuery, Redis, etc.)
Experience working with real-time systems and low-latency production environments
Background in feature engineering, model optimization, and production monitoring
Experience with LLM/Gen AI techniques, including but not limited to LLM evaluation, alignment, fine-tuning, knowledge distillation, RAG/agentic systems and productionizing LLM-powered products at scale
Advanced degree in Computer Science, Machine Learning, or related quantitative field

Potential Teams

Ads Measurement Modeling
Ads Targeting and Retrieval
Advertiser Optimization
Ads Marketplace Quality
Ads Creative Effectiveness
Ads Foundational Representations
Ads Content Understanding
Ads Ranking
Feed Relevance
Search and Answers Relevance
ML Understanding
Notifications Relevance

Benefits

Comprehensive Healthcare Benefits and Income Replacement Programs
401k with Employer Match
Global Benefit programs that fit your lifestyle, from workspace to professional development to caregiving support
Family Planning Support
Gender-Affirming Care
Mental Health & Coaching Benefits
Flexible Vacation & Paid Volunteer Time Off
Generous Paid Parental Leave

In select roles and locations, the interviews will be recorded, transcribed and summarized by artificial intelligence (AI). You will have the opportunity to opt out of recording, transcription and summarization prior to any scheduled interviews.

During the interview, we will collect the following categories of personal information: Identifiers, Professional and Employment-Related Information, Sensory Information (audio/video recording), and any other categories of personal information you choose to share with us. We will use this information to evaluate your application for employment or an independent contractor role, as applicable. We will not sell your personal information or disclose it to any third party for their marketing purposes. We will delete any recording of your interview promptly after making a hiring decision. For more information about how we will handle your personal information, including our retention of it, please refer to our Candidate Privacy Policy for Potential Employees and Contractors.

Reddit is proud to be an equal opportunity employer, and is committed to building a workforce representative of the diverse communities we serve. Reddit is committed to providing reasonable accommodations for qualified individuals with disabilities and disabled veterans in our job application procedures. If, due to a disability, you need an accommodation during the interview process, please let your recruiter know.

Apply About employer

More about this job

Responsibilities

Design, build, deploy, and operate production machine learning systems for recommendations, search, ranking, advertising, content and user understanding, and AI-powered experiences. Own the ML lifecycle and scalable data and model pipelines, improve system performance and measurable outcomes, and collaborate across product, data science, infrastructure, and engineering teams.

Requirements

Candidates should have 3–5 or more years of experience building and operating production machine learning systems, strong programming and software engineering skills, and knowledge of statistical learning and deep learning. They should have experience with ML frameworks, scalable pipelines and model serving, and translating product or business problems into measurable ML solutions; experience in recommendation, search, advertising, distributed data processing, real-time systems, or LLMs is preferred.

Skills

Machine Learning
Python
Java
Go
PyTorch
TensorFlow
Deep Learning
Recommender Systems
Search and Ranking
Feature Engineering
Model Serving
Distributed Systems
Large-Scale Data Processing
LLM Evaluation and Alignment
Real-Time Systems
Production Monitoring

Benefits

Healthcare Benefits
Income Replacement Programs
401(k) With Employer Match
Global Benefits
Professional Development Support
Caregiving Support
Family Planning Support
Gender-Affirming Care
Mental Health and Coaching Benefits
Flexible Vacation
Paid Volunteer Time Off
Paid Parental Leave

Visa sponsorship

Not detected in the job text

Keywords

Machine Learning
Applied Machine Learning
Python
Java
Go
PyTorch
TensorFlow
XGBoost
Random Forests
Regression
Transformers
Convolutional Neural Networks
Graph Neural Networks
Recommender Systems
Search and Ranking
Advertising Systems
Auction Systems
Representation Learning
Multimodal Embeddings
Feature Engineering
Model Serving
Spark
Kafka
Ray
Airflow
BigQuery
Redis
LLM Evaluation
Retrieval-Augmented Generation
Model Monitoring

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