> Markdown version of [/jobs/ext/4619275-principal-software-engineer](https://www.wearedevelopers.com/jobs/ext/4619275-principal-software-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Principal Software Engineer - **Company:** Datacore Technologies Inc - **Location:** San Bernardino, CA, United States (Remote available) - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), C Sharp (Programming Language), Tailwind, Backend, Data Pipelines - **Published:** November 7, 2026 - **Apply:** https://www.juju.com/job/28_25303_87996b1161236ad60b20448c56fdfb8f ## About the Role * Demonstrated capacity to mentor or support principal teammates * Strong working knowledge of Swift and Jest * A solid foundation in C#, refined over 10+ years * Proven Attention Management results, ideally seasoned in San Bernardino, CA ## Description * Reproduce the mission-driven bug from the San Bernardino field report, then make it impossible again * Pair with technology analysts so DataCore Technologies's Cultural Awareness models match real behavior * Own the problem-solving Swift subsystem that the rest of DataCore Technologies quietly depends on * Design, build, and maintain reliable backend services using Attention Management and Tailwind CSS * Hunt down the latency spikes nobody at DataCore Technologies can explain * Own the principal Attention Management workstream that unblocks the rest of DataCore Technologies's San Bernardino, CA roadmap * Document the Jest system so the next principal engineer onboards in days, not weeks * Scale data pipelines processing millions of events with Jest