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- Tasks: Develop and maintain machine learning models for ads conversion at Reddit.
- Company: Join Reddit, a vibrant community platform with millions of active users.
- Benefits: Enjoy flexible vacation, personal development funds, and a supportive work environment.
- Why this job: Be part of a diverse team shaping the future of advertising technology.
- Qualifications: 3+ years in machine learning, experience with TensorFlow or PyTorch, and deep learning knowledge preferred.
- Other info: Work in London with opportunities for remote collaboration.
The predicted salary is between 36000 - 60000 £ per year.
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Machine Learning Engineer – Ads Conversion Modeling, London
Client: reddit
Location: London, United Kingdom
Job Category: Other
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EU work permit required: Yes
Job Reference: fc21dcf72dc2
Job Views: 23
Posted: 12.08.2025
Expiry Date: 26.09.2025
Job Description:
Reddit is a community of communities. Its 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 ,+ active communities and approximately M+ daily active unique visitors, Reddit is one of the internets largest sources of information. For more information, visit .
As a company, Reddit primarily generates revenue through advertising, and we're working towards building a massive business to fund our mission. We distinguish ourselves from other digital ad platforms by attracting advertisers who want to connect with a specific target audience because of our passionate and engaged communities.
The Ads Conversions Modeling Team is entrusted with the development and maintenance of a diverse set of Machine Learning models that are responsible for predictions regarding user conversions after engaging with Reddit. The creation and enhancement of these models plays a crucial role in our organization's efforts to optimize advertising effectiveness and drive business growth. We are looking for a motivated engineer that will help us advance our vision. As a diverse group of software engineers, product managers, data scientists, and ads experts, we are excited for you to join our team!
As a machine learning engineer in the Ads Conversion Modeling Team, you will research, formulate, and execute projects, and actively participate in the end-to-end implementation process. You will collaborate with cross-functional teams to ensure successful product delivery. You will also be able to contribute your expertise and shape the future of ads ML at Reddit!
Your Responsibilities :
- Building industrial-level models for critical ML tasks with advanced modeling architectures and techniques
- Research, implement, test, and launch new model architectures including deep neural networks with advanced pooling and feature interaction architectures
- Systematic feature engineering works to convert all kinds of raw data in Reddit (dense & sparse, behavior & content, etc) into features with various FE technologies such as aggregation, embedding, sub-models, etc.
- Contribute meaningfully to team strategy. We give everyone a seat at the table and encourage active participation in planning for the future
Who You Might Be:
- Tracking records of consistently driving KPI wins through systematic works around model architecture and feature engineering
- + years of experience with industry-level Machine Learning models
- + years of experience with mainstream ML frameworks (such as Tensorflow and Pytorch)
- + years of end-to-end experience of training, evaluating, testing, and deploying industry-level models
- Deep learning experience is a strong plus
- Experience in orchestrating complicated data generation pipelines on large-scale dataset is a plus
- Experience with Ads domain is a plus
- Experience with Recommendation Systems is a plus
Benefits:
- Pension Scheme
- Private Medical and Dental Scheme
- Life Assurance, Income Protection
- Workspace benefit for your home office
- Personal & Professional development funds
- Family Planning Support
- Commuter Benefits
- Flexible Vacation & Reddit Global Days Off
Join us at Reddit, and help us build a community that is inclusive and empowering for everyone.
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Machine Learning Engineer - Ads Conversion Modeling (London) employer: Reddit
Contact Detail:
Reddit Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Machine Learning Engineer - Ads Conversion Modeling (London)
✨Tip Number 1
Familiarise yourself with Reddit's unique advertising model and community-driven approach. Understanding how their ads conversion works will help you articulate your ideas on optimising ad effectiveness during interviews.
✨Tip Number 2
Showcase your experience with machine learning frameworks like TensorFlow and PyTorch. Be prepared to discuss specific projects where you've successfully implemented these technologies, as this will demonstrate your hands-on expertise.
✨Tip Number 3
Network with current or former Reddit employees on platforms like LinkedIn. Engaging with them can provide insights into the company culture and expectations, which can be invaluable for tailoring your approach.
✨Tip Number 4
Prepare to discuss your experience with feature engineering and model architecture. Be ready to share examples of how you've tackled complex data challenges, as this is a key aspect of the role.
We think you need these skills to ace Machine Learning Engineer - Ads Conversion Modeling (London)
Some tips for your application 🫡
Understand the Role: Before applying, make sure to thoroughly read the job description for the Machine Learning Engineer position at Reddit. Understand the key responsibilities and required skills, such as experience with TensorFlow or PyTorch, and how your background aligns with these requirements.
Tailor Your CV: Customise your CV to highlight relevant experience in machine learning, particularly focusing on any projects involving model architecture and feature engineering. Use specific examples that demonstrate your ability to drive KPI wins and your familiarity with the ads domain.
Craft a Compelling Cover Letter: Write a cover letter that not only showcases your technical skills but also reflects your passion for Reddit's mission. Mention how you can contribute to the Ads Conversion Modeling Team and your enthusiasm for working in a collaborative environment.
Highlight Relevant Projects: In your application, include details about any relevant projects you've worked on, especially those involving deep learning or recommendation systems. Discuss the challenges you faced, the solutions you implemented, and the impact of your work.
How to prepare for a job interview at Reddit
✨Understand Reddit's Culture
Before your interview, take some time to familiarise yourself with Reddit's community-driven culture. Understanding their values and how they engage with users will help you align your answers with what they are looking for in a candidate.
✨Showcase Your Technical Skills
Be prepared to discuss your experience with machine learning frameworks like TensorFlow and PyTorch. Bring examples of past projects where you've built and deployed models, especially those that relate to ads or user conversion.
✨Prepare for Problem-Solving Questions
Expect to face technical questions that assess your problem-solving skills. Practice explaining your thought process clearly and concisely, as this will demonstrate your ability to communicate complex ideas effectively.
✨Highlight Collaboration Experience
Since the role involves working with cross-functional teams, be ready to share examples of how you've successfully collaborated with others in previous roles. Emphasise your ability to contribute to team strategy and your willingness to participate actively in discussions.
