> Markdown version of [/jobs/ext/4619388-principal-staff-software-engineer](https://www.wearedevelopers.com/jobs/ext/4619388-principal-staff-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 Staff Software Engineer - **Company:** Harnham Inc. - **Location:** Oakland, CA, United States - **Experience:** Expert - **Salary:** $280,000.0 - $350,000.0 - **Contract:** Permanent contract - **Skills:** Artificial Intelligence, Amazon Web Services, Data Analysis, Big Data, Cloud Computing, Data Infrastructure, Django Web Framework, Python (Programming Language), Knowledge-Based Systems, OpenAI, Software Engineering, ReactJS, Large Language Models, Generative AI, Backend, Agentic-AI, Build Tools, Front End Software Development - **Published:** November 7, 2026 - **Apply:** https://www.juju.com/job/28_25304_79ac113bf4ca1c7cfd2fcbf6a8df83e2 ## About the Role * 8-12+ years of software engineering experience * Strong backend expertise in Python (Django or similar frameworks) * Experience building full-stack applications (React) * Deep understanding of system design and scalable architecture * Hands-on experience with AWS or cloud infrastructure * Exposure to LLMs, generative AI, or AI-driven systems, * Builder mindset: thrives in 0*1 or early-stage environments * Comfortable operating in lean teams with high ownership * Strong problem solver who can go deep technically and think strategically * Experience working with large datasets or knowledge systems * Bonus: exposure to healthcare, life sciences, or regulated data environments ## Description * Build systems focused on user engagement, personalization, and growth * Develop data-driven insights into user behavior and interactions * Support monetization and targeting capabilities through intelligent systems * Work cross-functionally with product, design, and leadership teams * Collaborate with a distributed engineering team across time zones * Frontend: React * Cloud: AWS * AI/ML: OpenAI, LLMs, agentic systems