
Social Networking Platforms · 5k people
Senior Software Engineer, Core Platform
Posted 15 Oct
What’s this role about? Develop and design innovative solutions to scale Reddit's Core API Platform and media experience. Act as a technical coach and mentor to junior engineers while ensuring high system uptime and performance.
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About Reddit Reddit is the heart of the internet, where millions of people get together to talk about any topic imaginable. Share, vote, and decide what matters in everything from breaking news, to fandoms, lifehacks, gaming, sports, health, and the internet’s cutest animals. With over 100,000 subreddit communities about every topic you could think of (and thousands more you couldn’t), whatever it is, there’s a place for you on Reddit. Interested in joining our growing team? Check out redditinc.com/careers.
The heart of the internet, where millions gather for conversation and community.

Responsibilities
- ingestion, processing, storage, and distribution of media at global scale.
- You’ll help us build, operate, and scale the media platform that powers Reddit
- for hundreds of millions of users around the world.
- As a Senior Engineer on this team, you’ll be a technical coach and mentor.
- You’ll draw on your technical expertise to build Reddit’s next generation media
- platform and to ensure all of our systems have high uptime and strong
- performance while working with your team to build a roadmap to match the needs
- of an ever growing engineering organization and to fuel the next wave of
- Reddit’s growth.
- Additionally, as part of The Core Systems & Libraries team you’ll design, build,
- and run many critical foundational services, platforms, and libraries (media and
- non-media) that all engineering teams at Reddit rely on to serve our users and
- partners.
- Join us and help build the future of Reddit!
- Build platform API projects that scale to the rest of the organization
- Mentor and coach more junior engineers on your direct team to achieve our
- mission
- Build, deliver, and operate services that scale to millions of transactions
- per second at 5+ 9’s of availability
- Help us to optimize Reddit’s media experience for hundreds of millions of
- users across the world.
Qualification
- programming languages; Python, Go or similar
- 5+ years of experience with large-scale, mission-critical distributed
- systems.
- Excellent communication skills. You partner effectively with teams in a fully
- remote environment and discuss complex topics with technical and
- non-technical audiences.
- Experienced with GraphQL, gRPC, Thrift, Protobuf, and the ability to design
- and implement maintainable APIs.
- Familiarity with Kubernetes and cloud platforms (AWS, GCP)
- History of building clean, maintainable, and well-tested code.
- Media delivery expertise from back end systems to the user. Experience
- optimizing media performance, scalability, and delivery by improving
- different stages of the stack.
- Familiarity with media processing and global media distribution; image
- processing and delivery technologies such as image scaling, cropping, and
- image formats like progressive JPEG, WebP, HTTP Live Streaming (HLS),
- MPEG-DASH, MP4, and other streaming protocols, as well as video compression
- standards (H.264, H.265/HEVC, VP9, AV1), and distribution from user origin,
- through CDN, to the user experience.
Benefits
- Global Benefit programs that fit your lifestyle, from workspace to
- professional development to caregiving support
- Family Planning Support
- Gender-Affirming Care
- Flexible Vacation & Paid Volunteer Time Off
- Generous Paid Parental Leave
- 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/ [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
- $190,800—$267,100 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,
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