Greenhouse ·
full-timeMachine Learning Engineer
Reddit · San Francisco, CA
Reddit operates a platform of user‑generated communities where millions of people share, vote, and discuss topics every day. As a Machine Learning Engineer intern, you would work on the systems that decide which notifications users see, building and maintaining scalable ML infrastructure for relevance, ranking, and personalization across push, email, and in‑app channels. Day‑to‑day tasks include designing end‑to‑end pipelines—data ingestion, feature computation, model training, evaluation, deployment, and serving—using tools such as PyTorch or TensorFlow, Kafka, Redis, and orchestration platforms like Kubeflow or Airflow. You would collaborate with data scientists, product managers, and engineers to define requirements, run A/B or multi‑armed bandit experiments, and mentor teammates on ML engineering best practices. The role suits candidates with strong software‑engineering foundations, experience building large‑scale recommender systems, and proficiency in object‑oriented programming (Python, Go, or Java) plus familiarity with cloud data warehouses and observability stacks.
Education
- Level: Bachelor's degree
- Courses: Computer Science, Engineering
- Specializations: Computer Science, Engineering
Key Skills
Experience required
5-5 years experienceAbout the Role Machine Learning Engineer internship at Reddit focusing on scalable ML infrastructure for notifications, personalization, and experimentation. Responsibilities Design, build, and maintain scalable ML infrastructure for notification relevance, targeting, ranking, and personalization across channels. Architect end-to-end ML pipelines including data ingestion, feature computation, model training, evaluation, deployment, and online serving. Collaborate with data scientists, product managers, and engineers to define requirements and deliver solutions. Lead design and implementation of experimentation frameworks such as A/B testing and multi-armed bandits. Mentor engineers and share best practices in ML engineering and distributed systems. Requirements Bachelor’s degree in Computer Science, Engineering or related quantitative discipline. Five years of relevant experience. Proficiency in Python, Golang or Java and object-oriented programming. Experience building ML models with PyTorch or TensorFlow. Strong knowledge of API design (REST, HTTP, Thrift, gRPC) and large-scale storage/caching (Redis, Cassandra, DynamoDB). Experience with messaging systems (Apache Kafka, AWS SQS/SNS/SES) and orchestration tools (Kubeflow, Ray, Apache Airflow, AWS Step Functions). Familiarity with data warehousing (Google BigQuery, Amazon Redshift) and observability tools (Prometheus, Grafana, AWS CloudWatch). Ability to design and analyze A/B experiments. Eligibility Bachelor’s degree (DEGREE) required.
Skills for this role
| Role | Machine Learning Engineer |
|---|---|
| Company | |
| Location | San Francisco, CA |
| Type | internship |
| Compensation | Not disclosed |
| Posted | 2026-10-01 |
| Deadline | Rolling |
Typical process for this type of role
A general guide — the exact steps for this specific listing may vary; check the original posting for details.
- 1ApplicationSubmit your resume through the apply link.
- 2ScreeningRecruiter reviews your background against the role.
- 3AssessmentA technical test, assignment, or coding round, depending on the role.
- 4Interview(s)One or more rounds with the hiring team.
- 5OfferOffer letter with compensation and start date.
Before you apply
0/4Machine Learning Engineer at Reddit: frequently asked questions
- Who can apply for the Machine Learning Engineer role at Reddit?
- The listing asks for Bachelor's degree (Computer Science, Engineering); 5-5 years of experience.
- What skills does the Machine Learning Engineer role require?
- The listing highlights Python, Golang, Java, PyTorch, TensorFlow, REST, HTTP, Thrift, gRPC, Redis. Show each of these in a project or past role on your resume.
- What is the salary for this role?
- Reddit has not stated compensation in the listing. Check the original posting or ask during the application process.
- Is the Machine Learning Engineer position remote, hybrid or onsite?
- The listing marks this role as remote, with San Francisco, CA as the location.
- What is the application deadline?
- Reddit has not listed a fixed deadline, so apply early in case the opening is filled.
- How do I apply for the Machine Learning Engineer role?
- Use the Apply button on this page. It opens the original listing on job-boards.greenhouse.io, where you submit your application with the company.
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