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# Staff Software Engineer, Core Services

- **Company:** One Sign, Inc.
- **Location:** San Mateo, CA, United States (Remote available)
- **Experience:** Expert
- **Salary:** $200,000 - $220,000
- **Contract:** Permanent contract
- **Skills:** C (Programming Language), Application Programming Interfaces (APIs), Artificial Intelligence, Data Analysis, C++ (Programming Language), Software Code Optimization, Software Quality, Code Review, Software Debugging, Distributed Systems, PostgreSQL, Redis, Software Engineering, Data Streaming, Large Language Models, Performance Monitor, Apache Kafka, Non-relational Database, Bitcoin, Vertica, Claude, Grpc, Golang
- **Published:** November 10, 2026
- **Apply:** https://www.careerbuilder.com/job-details/staff-software-engineer-core-services--fbd1973b-947b-47c9-8052-fb56d9d75fb2

## About the Role

Software Engineering, C Programming Language, Campaigns, Artificial Intelligence (AI), Customer Retention/Renewal, Bitcoin, LifeTime Value (LTV), Business-to-Consumer (B2C) Marketing, Work From Home, Business Activity Monitoring (BAM), * 8+ years of experience working as a software engineer

 * Experience operating reliable production systems at scale
 * Experience writing high-performance code in a compiled language such as Rust, C/C++, or Golang
 * Ability to reason about how data flows through distributed systems
 * Experience using LLM-powered coding tools, such as Claude, to accelerate development, improve code quality, and enhance engineering workflows.
 * Bias towards automating the boring stuff

We value a variety of experiences, and these are not required. It would be a added bonus if you have experience in any of the following:

 * Experience with any of Redis, Kafka, Postgres, ClickHouse, gRPC
 * Experience profiling applications to improve performance in terms of time/CPU/memory
 * Experience debugging issues in distributed systems

## Description

As OneSignal evolves into a fully autonomous platform, the Core Services team will build and scale the high-stakes services that our products and engineering teams rely on. As a Staff Software Engineer, you'll lead significant projects and directly shape the reliability, performance, and future of our platform.
What You'll Do

 * Collaborate with engineers to architect and implement high-performance services that are durable and reliable
 * Participate in code reviews, design reviews, and production on-call rotation
 * Work together with the team to resolve production issues and ensure system scalability
 * Conduct data analysis, performance monitoring, and system optimization through benchmarking/profiling.
 * Work independently to drive experiments and solutions for business needs
 * Design synchronous and asynchronous APIs for communicating between services in a large distributed system
 * Design schemas for relational and non-relational databases