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# Software Engineer (Backend), Communications

- **Company:** Roblox
- **Location:** San Mateo, CA, United States
- **Experience:** Expert
- **Salary:** $243,290.0
- **Contract:** Permanent contract
- **Skills:** Airflow, Automation of Tests, Big Data, C++ (Programming Language), Databases, Computer Engineering, Memory Management, Fault Tolerance, Game Engine, Apache Hive, Machine Learning, Microsoft SQL Server, MySQL, Network Protocols, SQL Databases, Systems Integration, WebSocket, Multithreading, Apache Spark, Information Technology, Data Analytics, Grpc
- **Published:** June 12, 2026
- **Apply:** https://careers.roblox.com/jobs/8001022?gh_jid=8001022

## About the Role

This role will focus on building and scaling the backend systems that power text chat, strengthening the underlying chat infrastructure needed to support reliability, safety, and developer-facing flexibility across existing experiences, while also enabling new innovative products and communication patterns. If you are an experienced developer with a deep understanding of large scale systems and enjoy shaping engineering vision, you’ll be right at home within our highly-skilled and product-driven team, * Fluent in backend software development

 * Proficient in Microsoft SQL Server, MySQL, PostgreSQL or other database technology at scale
 * 7+ years industry experience building and supporting highly available and large-scale distributed fault tolerant services in production environments
 * Experienced with low-level operating systems concepts including multi-threading, memory management, networking and storage, performance and scale
 * Well-versed in networking protocols (HTTP, UDP, GRPC, WebSockets)
 * Hold a Bachelor’s degree or equivalent experience in Computer Science, Computer Engineering, or a similar technical field.
 * Experience collaborating with cross-functional partners in Product and Data Science to drive meaningful results that align with the team's overarching vision.

You are:

 * Responsible: you build systems that work and keep on working reliably. You are thorough in your designs, rigorous in handling potential failure cases, and diligent in automated testing.
 * Analytical: Excited to investigate large, ambiguous problems, and quantify the problems and the solutions.
 * Creative: You take a creative and strategic approach to solving hard problems and driving new tools/functionality for our end users and game developers
 * Team-oriented: You are able to work well as part of a team and know how to collaborate with all participants to develop the best solutions. Able to write clear design specs, mentor junior engineers, and guide projects from beginning to end
 * Data-driven focused on quality metrics and monitoring

Bonus:

 * Experience building communication products and features.
 * Experience with C++
 * Experience orchestrating and integrating ML models with product use cases
 * 2+ years of experience using big data query/processing languages and tools such as SQL, Hive, Spark and Airflow

## Description

* Engineer and scale next-generation infrastructure to accommodate our rapidly expanding user base, maintaining systems capable of supporting millions of concurrent users. You will architect high-throughput backend services, leverage machine learning models, and support rapid product experimentation.
 * Innovate on the platform to provide creators the tools they need to build deeply tailored & integrated social experiences
 * Devise creative solutions to optimize and scale our systems to support communication for a billion people on the platform.
 * Introduce and improve our processes to help us be more effective and efficient.
 * Enforce high quality standards while we iterate on feature development.
 * Collaborate with other engineering and product teams (Game engine, Creator, Trust & Safety to name a few) at the company to push the boundary of what is possible
 * Self-organize and take ownership of projects throughout its full lifecycle.
 * Help recruit future talent and mentor engineers for the team


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