Software Engineer (Systems) - Health Core Infrastructure

New York, NY

Health is Twitter’s top priority and we need your help.

We build and maintain the large-scale, low latency distributed systems that power Twitter’s real-time feature computation, rule engine, and data exploration tools that keep spam, abuse, and adversarial accounts off of Twitter.

If you want to work on a team that does some of the most interesting technical work at Twitter, protects people from real harm, and has executive-level visibility, then this is the team for you.

Who We Are

We’re a team of systems engineers that builds and maintains the core infrastructure helping to protect the health of the public conversation. We’re motivated by interesting technical challenges -- our real-time feature computation and rules engine runs thousands of rules on half a million events per second -- as well as internal and external customer impact. We work closely with our customers in Trust and Safety, User Services and Data Science to provide a platform for technical and nontechnical customers to deploy new features and rules at scale in seconds.

Our work sits at the intersection of a number of interesting disciplines. We do large-scale real-time event processing that needs to catch some of the smartest adversaries. Our flexible platform serves numerous important internal customers. And we build and maintain a grammar, compiler, and tooling for a Turing-complete rules and feature computation language.

We deploy continuously, write unit tests, and do code review.

What You’ll Do

Here are some of the daily duties of the role:

  • Extend the functionality of the platform, including new language features and new integrations with other systems, to serve our customers’ needs.
  • Profile and stress test to surface inefficiencies in our system.
  • Tune cache and storage to optimize our runtime performance.
  • Diagnose issues and debug across the entire stack.
  • Work with platform services we depend on, including storage, messaging and data platform teams.
  • Give conference talks, write blog posts, and otherwise evangelize Twitter health engineering internally and externally.
  • Lead small, hungry project teams to impactful infrastructure wins.
  • Communicate with stakeholders and build consensus around the technical roadmap.

Who You Are

  • You’ve built and maintained a large-scale distributed system before and have the scars to prove it.
  • You value deleted code -- and code never written -- just as much as the code that you do write.
  • You’re willing to be coached and to coach others.
  • You know when it’s okay to take on technical debt and you eventually pay it down.
  • You can balance quality work vs customer requests vs new features.
  • You can make the right product and technical decisions independently.

Here’s all the legal good stuff:

We are committed to an inclusive and diverse Twitter. Twitter is an equal opportunity employer. We do not discriminate based on race, ethnicity, color, ancestry, national origin, religion, sex, sexual orientation, gender identity, age, disability, veteran, genetic information, marital status or any other legally protected status.

San Francisco applicants: Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.

Engineering Hiring Process

Step 1

Once your application is received, a recruiter will reach out pending your qualifications are a match for the role.

Step 2

If your background is a match, you may have 1-2 technical phone interviews or be given the chance to provide a work sample depending on the role.

Step 3

If the phone interviews go well or your work sample is strong, the final step includes interviews with 5-6 people held onsite in our office.


Personal Information

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U.S.  Equal Employment Opportunity Information  (Completion is Voluntary)

At Twitter, we have a bold aspiration to reach every person on the planet. We believe that goal is more attainable with a team that understands and represents different cultures and backgrounds and we are committed to an inclusive and diverse Twitter.

This is where you come in! Please take a few minutes to provide us with your information. You are not required to provide this information and you may select “Decline to Disclose”. Your decision to provide information (or not) will not affect your employment or opportunities at Twitter.

Twitter is an equal opportunity employer. We do not discriminate based on race, color, ethnicity, ancestry, national origin, religion, sex, gender, gender identity, gender expression, sexual orientation, age, disability, veteran status, genetic information, marital status or any legally protected status.

You can view the ‘EEO is the Law’ poster here.

Twitter does not accept any unsolicited resumes from recruiting agencies and will not pay fees associated with any such resumes. Agencies, please do not send resumes to any Twitter location, employee, or email address.

Twitter, Inc. is committed to working with and providing access and reasonable accommodations to applicants with physical or mental disabilities. If you need an accommodation in order to apply for open job opportunities, please submit a description of your accommodation request to This email is only for accommodation requests related to the application process.

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