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Build the Next Generation of AI
Join Pine AI
At Pine AI, we're not just following the AI revolution; we're driving it. We are a deeply technical, AI-native team on a mission to build transformative intelligent systems. If you're an innovator ready to make a profound impact, your journey starts here.
Principal Backend Engineer
About Us
At Pine AI, we're not just observing the AI revolution; we're leading it. As a deeply technical, AI-native team, we are on a mission to build transformative intelligent systems. We believe that a small, elite team can deliver outsized impact.
Your Mission
We are seeking a Backend Architecture Master with the rare ability to achieve the output of a much larger team. As a pivotal technical leader, you will hands-on design and build our AI-native core platform, engineered to support billion-scale daily active users. You will leverage a global perspective to architect and deliver ultra-high-performance, high-availability, and highly scalable product systems from the ground up.
Who We Look For
- Educational Background: We highly value candidates with a Bachelor's degree in Computer Science or a related field from a top-tier university globally.
- Proven Track Record: You have successfully led the end-to-end development and scaled Web 2.0 internet products that have served over 10 million DAU (Daily Active Users), demonstrating a profound understanding and successful navigation of high-concurrency, large-scale user system challenges.
Your Expertise
- Exceptional system architecture and design capabilities, coupled with deep hands-on development proficiency.
- Mastery of the full DevOps lifecycle, including GitHub, CI/CD, development process management, code quality, production standards, monitoring, and alerting.
- A knack for leveraging AI-assisted development tools to drive extreme engineering efficiency and product stability.
- Possess a strong entrepreneurial spirit, are results-driven, and thrive on creating disruptive technical impact within a lean team.
Why Pine AI
We offer unparalleled technical ownership and influence, generous equity, and the opportunity to collaborate with world-class engineers. Join us in a culture built on radical candor, efficiency, and zero politics, as we collectively define the future of AI.
AI Agent Full-Stack Engineer
We are seeking an exceptional AI Agent Full-Stack Engineer to architect, develop, and deploy cutting-edge AI-driven solutions. You will be instrumental in building the core of our intelligent agent capabilities, from sophisticated backend systems to intuitive user interactions.
What You'll Do
- Design, build, and maintain state-of-the-art autonomous AI Agent systems and their underlying infrastructure.
- Contribute to the full lifecycle of model development, including post-training, reinforcement learning (RL), and supervised fine-tuning (SFT).
- Innovate in the domain of voice agents, creating natural and effective conversational experiences.
- Collaborate closely with a world-class team of researchers and engineers to bring AI concepts to life.
Who You Are
- A Visionary Builder: You're driven by an entrepreneurial spirit and the ambition to create groundbreaking technology.
- Brilliant & Pragmatic: You possess exceptional problem-solving skills, learn rapidly, and have a strong bias for action and delivering results.
- Hands-On & Proactive: You thrive in a fast-paced, dynamic environment and take initiative to tackle complex technical challenges head-on.
- Full-Stack AI Expertise: You're proficient with modern AI/ML frameworks, coding tools, and have a strong foundation in Computer Science, AI, or a related field. Demonstrable experience with AI agents, model training, and complex system development is highly valued.
- Proven Innovator: Your portfolio (GitHub, publications, personal projects) showcases your ability to deliver impactful solutions.
Why Pine AI?
- Impact & Ownership: Take on significant responsibility and see your work directly shape the future of AI.
- Generous Equity: We offer highly competitive stock options. We believe in rewarding contributions and success generously and continuously. Your impact directly translates to your reward.
- Flexibility & Freedom: We offer flexible working hours and support remote work arrangements to help you do your best work.
- World-Class Team: Collaborate with a team of seasoned engineering and research geeks, many with successful entrepreneurial track records, hailing from top global universities.
- Radical Candor & No Politics: Our culture is built on simplicity, directness, and a relentless focus on facts and results. We foster an environment free of office politics, where brilliant minds collaborate to change the world.