Senior iOS Engineer, Media Foundations

Senior Staff Software Engineer, Client Architecture

Reddit

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 126 million daily active unique visitors, Reddit is one of the internet’s largest sources of information. For more information, visit www.redditinc.com. The Content Ecosystem organization fuels Reddit's contribution flywheel by integrating posting, commenting, community building, and professional platforms into interlocking growth loops. We lower the friction required to create content and guide new communities from day zero to a thriving state. Additionally, we consolidate professional presence into a trusted hub for creators while serving as the foundational shield for platform data defense and safety mandates. Ultimately, our goal is to move Reddit beyond consumption-only usage, driving daily active user growth by turning passive lurkers into meaningful contributors. We need a web client and mobile consumer product domain expert to lead the architectural overhaul of our post and comment composers across all platforms. As a Senior Staff Engineer, you will define the multi-year technical vision for how users create content on Reddit. You will focus on continued modernization of our composers and building out new contribution formats, particularly the future of video creation and editing. By removing client-side friction, integrating intelligent posting/commenting user empowerment, and setting the standard for client performance, you will be the technical cornerstone for accelerating our global user contribution and content ecosystem growth. KEY RESPONSIBILITIES: * Architect for Scale: Define and execute the org-wide client architecture strategy to support seamless video creation, editing, and uploading directly within our shared composers. Establish the patterns for how all future formats integrate into the client layer. * Accelerate Product Roadmap: Build and scale new contribution formats natively within the shared post and comment experiences. Unblock execution for high-upside strategic bets designed to reduce identity-risk barriers for sensitive content and productize viral, low-effort creation formats that convert passive consumers into active contributors. * Mentorship & Org Leadership: Serve as the technical anchor for the Contribution engineering team and influence the broader Content Ecosystem org. Translate complex product requirements into actionable technical roadmaps and drive alignment across Web, iOS, and Android platforms. * Leverage Modern Tooling: Thoughtfully utilize AI-assisted development tools to accelerate prototyping, system design, and coding, while applying rigorous judgment to validate and own the final outputs. Evangelize AI as a tool. * Optimize Contribution Funnel: Lead the engineering of highly performant client infrastructure. You will tackle challenges like zero-latency rich-text rendering, resilient edge-optimized media upload pipelines, and complex state synchronization for offline and online editing to maximize global contribution success rates. QUALIFICATIONS: * 10+ years of professional software engineering experience with a proven track record as a Senior Staff Engineer or Principal Engineer on consumer-facing mobile or web client applications. * Client Architecture Expertise: Deep mastery of modern web architecture (e.g., React, TypeScript, advanced state management) with strong architectural command of native mobile paradigms (iOS/Swift, Android/Kotlin) to define unified client APIs and lead cross-platform engineering standards. * Domain Expertise: Demonstrated track record of solving hard client-side performance and rendering bottlenecks at scale, building highly interactive features such as zero-latency rich-text editors, asynchronous media processing pipelines, or real-time state synchronization systems. * Communication: Exceptional written and verbal communication skills. Ability to influence VP-level technical direction and navigate strict tradeoffs between performance, reliability, and business impact without directly managing the engineers involved. * Demonstrated ability to lead large, cross-functional engineering initiatives that balance technical excellence with aggressive growth targets. 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      Pay Transparency: This job posting may span more than one career level. In addition to base salary, this job is eligible to receive equity in the form of restricted stock units, and depending on the position offered, it may also be eligible to receive a commission. Additionally, Reddit offers a wide range of benefits to U.S.-based employees, including medical, dental, and vision insurance, 401(k) program with employer match, generous time off for vacation, and parental leave. To learn more, please visit https://www.redditinc.com/careers/. To provide greater transparency to candidates, we share base salary ranges for all US-based job postings regardless of state. We set standard base pay ranges for all roles based on function, level, and country location, benchmarked against similar stage growth companies. Final offer amounts are determined by multiple factors including, skills, depth of work experience and relevant licenses/credentials, and may vary from the amounts listed below. The base salary range for this position is: $232,500—$325,500 USD 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.

Senior Android Engineer, Media Foundation

Reddit

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 126 million daily active unique visitors, Reddit is one of the internet’s largest sources of information. For more information, visit www.redditinc.com. The Media Foundation’s mission is simple: Delivering seamless, high-performance media experiences that meet and exceed industry standards, ensuring unparalleled engagement across all platforms at Reddit. Media is the most engaging medium on Reddit, whether it’s for posts, comments, or ads. This is a pivotal role within the Media Foundation team, essential to shaping Reddit's media experience across all devices. We are seeking a stellar engineer with a deep understanding of scalable media solutions who can drive innovation, deliver top-tier video experiences to our users, and guide other teams in seamlessly integrating with our video API. This role not only involves building robust media capabilities but also contributing to the growth and strength of our media engineering team as Reddit continues to scale. This is a high impact role where you will drive related technical & product strategy, operations, architecture, and execution for one of the largest sites in the world. What You Will Do * Build novel media products and features that our millions of users will love. * Work cross-functionally, collaborate and partner with product, design, and other engineering counterparts to execute on product and business strategy. * Contribute to the full development cycle: technical design, development, test, experimentation, analysis, and launch. You’ll be reviewing code and design docs, giving feedback on product specs and mocks. * Participate with a team of thoughtful, fast-moving, and motivated engineers. Contribute to standards that improve developer workflows, recommend best practices, and help mentor engineers on the team to grow their technical expertise. * Continuously learn and improve your technical and non-technical abilities. Qualifications * Expertise in Kotlin with 5+ years of experience within Android development. * Deep understanding of Android SDK, Lifecycle, System components, Jetpack Compose, animations, MVVM/MVI, Clean architecture & Unit/UI Testing, Multithreading. * Embracing the challenges of building data intensive, highly responsive, and fault tolerant apps in the constrained environment of a smartphone. * Strong organizational skills, the ability to prioritize tasks and keep projects on schedule. * Excellent communication skills. You collaborate effectively with teams in a fully remote environment and discuss complex topics with technical and non-technical audiences. * You love to build new things and thrive in ambiguity and even failure. You care about innovation.  Nice To Have * Additional knowledge around GraphQL, REST, HTTP basics, and the ability to design maintainable APIs is a plus. * Knowledge of ExoPlayer for video and audio playback, asset management, streaming, editing, and exporting capabilities. * A proven track record of using data and performance metrics to relentlessly optimize apps, moving the needle from "good" to "world-class" user experiences. * Hands-on experience optimizing video player performance or building feature-rich products on top of core media playback components. 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      Pay Transparency: This job posting may span more than one career level. In addition to base salary, this job is eligible to receive equity in the form of restricted stock units, and depending on the position offered, it may also be eligible to receive a commission. Additionally, Reddit offers a wide range of benefits to U.S.-based employees, including medical, dental, and vision insurance, 401(k) program with employer match, generous time off for vacation, and parental leave. To learn more, please visit https://www.redditinc.com/careers/. To provide greater transparency to candidates, we share base salary ranges for all US-based job postings regardless of state. We set standard base pay ranges for all roles based on function, level, and country location, benchmarked against similar stage growth companies. Final offer amounts are determined by multiple factors including, skills, depth of work experience and relevant licenses/credentials, and may vary from the amounts listed below. The base salary range for this position is: $167,000—$267,000 USD 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.

Senior Staff Machine Learning Engineer, Notifications

Reddit

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 126 million daily active unique visitors, Reddit is one of the internet’s largest sources of information. For more information, visit www.redditinc.com. The Notifications Relevance team at Reddit is building the next generation of notifications focused on delivering the right content to the right user at the right time using the right channel (push notification, email digest and in-app). We are the second largest growth lever at Reddit and a core component to understanding how to delight our current user base and bring new users to discover all that Reddit has to offer. Redditors produce the most amazing content about every niche topic in the world.  Leveraging machine learning and large-scale system development, we process hundreds of millions of posts and user activities to provide personalized recommendations for tens of millions of users. As a Senior Staff, you will design and build a large-scale system that powers end-to-end recommendation systems at scale. You’ll  work across multiple areas of the stack, including budget optimization, retrieval, ranking, features, measurement, LLM-based answers, etc, partnering deeply with product, org leads, and other XFN to deliver reliable, high quality systems that can help Reddit Notifications push the boundary on state of the art. What You’ll Do * Contribute to advancing Reddit's growth by designing and implementing content discovery algorithms that prioritize a seamless and highly personalized user experience. * Deeply understand the Reddit Notifications product and drive the vision for the notifications relevance team. * Enhance core recommendation capabilities, including candidate retrieval, ranking models, and budgeting optimization, while designing and testing new pipeline components.  You will also deploy  ML models, integrate LLMs, and ensure robust monitoring and smooth product integration throughout the process. * Serve as the primary ML domain expert, deploying state-of-the-art models at scale, driving architectural decisions, and ensuring robust monitoring and smooth product integration across the engineering organization. * Collaborate across disciplines and with ML, Product, Infrastructure, and DS teams at Reddit to find technical solutions to complex challenges. * Mentor and guide senior and staff engineers in the team. * Partner closely with senior leadership and cross-functional org leads to shape long-term roadmaps, balancing immediate operational wins with strategic technical objectives. Who You Are * 10+ years of industry experience with deep expertise in large-scale recommendation systems, notifications experience preferred.  * Proven ability to identify key opportunities, define roadmaps and drive scalable improvement in  notifications relevance. * Strong experience in building and deploying large-scale ML models using frameworks such as PyTorch or Tensorflow. * Experience working with LLM in production and utilizing generative AI to augment recommendation systems  * Proficiency in object-oriented programming (Python, Golang). * Big Plus: experience with state of the art model architectures * Big Plus: experience building production Agentic AI frameworks. 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  #LI-remote, #LI-JS5 Pay Transparency: This job posting may span more than one career level. In addition to base salary, this job is eligible to receive equity in the form of restricted stock units, and depending on the position offered, it may also be eligible to receive a commission. Additionally, Reddit offers a wide range of benefits to U.S.-based employees, including medical, dental, and vision insurance, 401(k) program with employer match, generous time off for vacation, and parental leave. To learn more, please visit https://www.redditinc.com/careers/. To provide greater transparency to candidates, we share base salary ranges for all US-based job postings regardless of state. We set standard base pay ranges for all roles based on function, level, and country location, benchmarked against similar stage growth companies. Final offer amounts are determined by multiple factors including, skills, depth of work experience and relevant licenses/credentials, and may vary from the amounts listed below. The base salary range for this position is: $266,000—$372,400 USD 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.