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Fullstack Engineer at Known | San Francisco

Amari AISan Francisco
On-site Full-time

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Experience Level

Mid to Senior

Qualifications

QualificationsProven track record of successfully launching mobile and fullstack applications. Ability to work collaboratively in a fast-paced, dynamic environment. Strong problem-solving skills and a passion for creating exceptional user experiences.

About the job

About the Role

As a pivotal technical founder, you will be responsible for crafting the entire product interface of Known. This includes developing an engaging mobile application, establishing backend systems for seamless matching and communication, and implementing API integrations that simplify the dating experience. You will create features that combine stunning user interfaces, intelligent data workflows, and third-party services to deliver a truly enchanting consumer experience.

You will collaborate closely with the founding team, which includes experts in AI/ML, product development, and design, to transform innovative product concepts into functional code. This high-ownership position allows you to design systems, make significant technical choices, and directly influence how millions of users interact with Known.

Responsibilities

  • Develop and launch mobile applications using React Native that are fast, enjoyable, and user-friendly, covering everything from onboarding processes to real-time messaging and match exploration.

  • Create and uphold backend services utilizing Node.js/TypeScript, including RESTful APIs, WebSocket connections for real-time chatting, and WebRTC integrations for audio and video functionalities.

  • Integrate third-party solutions such as OpenAI/Anthropic LLMs, Apple/Google Pay, reservation systems, and SMS/push notifications to provide seamless, automated interactions.

  • Collaborate with AI/ML engineers to present model outputs—like compatibility scores, tailored recommendations, and conversational agents—through intuitive user interfaces and efficient APIs.

  • Manage infrastructure and deployments on contemporary cloud platforms, ensuring reliability, security, and scalability as the user base expands.

  • Implement analytics and monitoring to evaluate user engagement, conversion pathways, and overall product health in real-time.

Requirements

  • 3–5 years of experience in building production-level fullstack or mobile applications, preferably within consumer products or startup environments.

  • Proficient in TypeScript, React, React Native, and Node.js.

  • Demonstrated experience in designing and optimizing RESTful APIs with a focus on performance, security, and maintainability.

  • Solid understanding of Postgres—comfortable with data modeling, query optimization, indexing, and database performance.

  • Familiarity with cloud platforms (AWS, GCP, Vercel) for hosting and deployment.

About Amari AI

At pear-vc, we are passionate about building innovative solutions that redefine the dating experience. Known is our flagship product, designed to integrate technology with human connection, making dating more enjoyable and effective. Our team is composed of dedicated professionals committed to pushing the boundaries of what's possible in technology and user experience.

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