Senior Software Engineer - Core Services

| San Mateo, CA, USA | Hybrid
Employer Provided Salary: 218,540-315,850 Annually
Salary data is provided by the employer. Please note this is not a guarantee of compensation.
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Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. 

At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. 

A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone.

Why Core Services?

The Core Services team manages the core infrastructure and API stack and builds high throughput microservices that powers These services need to be fast, reliable and scalable as they have a huge impact on the daily experience of every Roblox user. Also, the team owns shared libraries, infrastructure microservices, and the web infrastructure used by all other Roblox full-stack feature teams. We ship with testable and configurable features that allow for rapid experimentation, data collection, and optimize for performance and user engagement. From serving basic user information to populating content into in-experience. Core Services is integral to the Roblox experience.

Here are a few quick highlights of how we power Roblox:

  • Microservices - we manage 50+ microservices, the most of any Roblox full-stack engineering team. These services are crucial to run Roblox. They sit right at the heart of the connection between product and infrastructure.
  • API Scale - we run services that hit millions of RPS, the highest load of any Roblox full-stack engineering team. Scalability and reliability of these services is important to keep the product alive.
  • Thumbnails - our system generates and delivers 5 - 6 million thumbnails per second. Perfect for viewing all your avatar clothing options!
  • Roblox website - managing the production infra behind running the website while re-architecting it is a real interesting architectural challenge. If you're interested in changing the airplane's engine while it's flying, you'll like this challenge.

As a Senior engineer on the team, you will focus on development and management of core infrastructure, API stack, and microservices. These components are essential for supporting a range of services and platforms within Roblox, including our studio environment. You will get the chance to take ownership of high RPS (requests per second) services, contribute to the re-architecture of systems to accommodate our growing needs, collaborate with a diverse set of teams including Infra and the product teams within Roblox, leading initiatives, and making a significant impact across the company.

You will:

  • Report into the Core Services Organization.
  • Build, maintain, and scale systems to support our goal of 1 billion active users
  • Design backend features for and mobile apps on iOS, Android, and Amazon platforms.
  • Contribute to the development of tooling and frameworks for full-stack teams
  • Collaboratively build new microservices using Docker, .NET Core, and container orchestration.
  • Build core infrastructure accessible to all Roblox teams.
  • Enforce high code quality standards, architectural designs, and long-term approaches as a gatekeeper

You have:

  • Experience in compiled languages such as C# or Java
  • 6+ Years of Experience building web applications in frameworks such as ASP.NET, SpringMVC, Express, Rails, or Flask.
  • Experience designing high traffic REST APIs, using Containers and micro-services
  • Experience building large scale distributed systems with focus on scalability, reliability, and availability
  • Experience leading cross team greenfield projects
  • Well-versed in front-end development with at least one modern JavaScript architecture such as React, AngularJS, Vue, or other frameworks. (Bonus)
  • An expert that has shipped multiple products / versions of products.(Bonus)

For roles that are based at our headquarters in San Mateo, CA: The starting base pay for this position is as shown below. The actual base pay is dependent upon a variety of job-related factors such as professional background, training, work experience, location, business needs and market demand. Therefore, in some circumstances, the actual salary could fall outside of this expected range. This pay range is subject to change and may be modified in the future.  All full-time employees are also eligible for equity compensation and for benefits.

Annual Salary Range

$218,540$315,850 USD

Roles that are based in our San Mateo, CA Headquarters are in-office Tuesday, Wednesday, and Thursday, with optional in-office on Monday and Friday (unless otherwise noted).

You’ll Love: 

  • Industry-leading compensation package
  • Excellent medical, dental, and vision coverage
  • A rewarding 401k program
  • Flexible vacation policy
  • Roflex - Flexible and supportive work policy 
  • Roblox Admin badge for your avatar
  • At Roblox HQ: 
    • Free catered lunches five times a week and several fully stocked kitchens with unlimited snacks
    • Onsite fitness center and fitness program credit
    • Annual CalTrain Go Pass

Roblox provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation and training.

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Technology we use

  • Engineering
  • Product
    • C#Languages
    • JavaLanguages
    • PythonLanguages
    • LuauLanguages
    • AWS (Amazon Web Services)Services
    • GitHubServices
    • Microsoft AzureServices
    • Google AnalyticsAnalytics
    • FigmaDesign
    • IllustratorDesign
    • PhotoshopDesign
    • AirtableManagement
    • ConfluenceManagement
    • Google DriveManagement
    • Google DocsManagement
    • Google SlidesManagement
    • JIRAManagement
    • WrikeManagement


2850 South Delaware Street, San Mateo, CA 94403

An Insider's view of Roblox

What projects are you most excited about?

Every improvement made can make a difference in the way users interact. It's exciting to see our projects come to fruition.


Senior Software Engineer

What is your vision for the company?

Roblox is attracting top technical talent with our investment in innovation, strong business growth, and the long-term vision of ushering in the metaverse.


Chief Technology Officer

What does your typical day look like?

I love working on features that help our community build awesome experiences.


Accessibility Lead

What are Roblox Perks + Benefits

Roblox Benefits Overview

One of our top priorities is the health and well-being of our employees and their families. We offer a robust and comprehensive program with lots of variety to best meet each team members’ needs.

Excellent medical, dental & vision benefits
Rewarding 401(k) program
Flexible vacation policy
Life insurance & disability benefits
Daily lunch & fully stocked kitchens w/ unlimited snacks
Onsite fitness center and fitness program credit
Commuter benefits

Open door policy
OKR operational model
Team based strategic planning
Open office floor plan
Employee resource groups
Hybrid work model
Flexible work schedule
Dedicated diversity and inclusion staff
Diversity employee resource groups
Hiring practices that promote diversity
Health Insurance + Wellness
Flexible Spending Account (FSA)
Disability insurance
Dental insurance
Vision insurance
Health insurance
Life insurance
Wellness programs
Mental health benefits
Financial & Retirement
401(K) matching
Company equity
Employee stock purchase plan
Charitable contribution matching
Child Care & Parental Leave
Childcare benefits
Generous parental leave
Family medical leave
Vacation + Time Off
Unlimited vacation policy
Generous PTO
Paid holidays
Paid sick days
Flexible time off
Floating holidays
Office Perks
Commuter benefits
Company-sponsored outings
Free daily meals
Free snacks and drinks
Company-sponsored happy hours
Onsite office parking
Recreational clubs
Relocation assistance
Fitness stipend
Home-office stipend for remote employees
Onsite gym
Professional Development
Job training & conferences
Lunch and learns
Promote from within
Mentorship program
Online course subscriptions available
Paid industry certifications

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