Senior Software Engineer - Web Full-Stack

About Firsthand

Firsthand has built the first AI-powered Brand Agent platform, transforming the way marketers and publishers engage consumers through their own AI agents, anywhere online.

While most AI applications in marketing and advertising focus on back-office automation, the Firsthand Brand Agent Platform™ powers front-line consumer engagement. Operating across both owned properties and paid media, Firsthand's Brand Agents make a company’s expertise accessible in real time, adapting to consumers’ interests and guiding them towards the information they need to take action. Central to the platform is Lakebed™, the company’s AI-first data and knowledge rights management system that ensures brands retain full ownership and control of their expertise.

Firsthand is led by Jon Heller, Michael Rubenstein, and Wei Wei, whose previous ventures helped build the foundations of modern digital advertising. Backed by Radical Ventures, FirstMark Capital, Aperiam Ventures, and Crossbeam Venture Partners, Firsthand is shaping the future of AI-driven consumer engagement.

Firsthand is headquartered in NYC, with team members working together in-office three days a week.

About The Role

We're at the stage of rapidly expanding the team on a solid foundation! As a highly motivated web engineer, you will be instrumental in building the web components to supercharge our system.

• Collaborate with cross-functional teams to gather requirements and translate them into technical specifications.
• Develop and maintain high-quality web applications using modern web technologies and frameworks.
• Ensure quality through thorough automated testing to support critical business operations.
• Manage deployment, monitoring, and reliability to be responsible for the full lifecycle of the web product.

For this role, we prefer NY-based candidates who can come to the office three days a week, but we are also open to remote applicants within the US. New remote hires must attend in-person onboarding in the NY office their first week.

Who You Are

• 4+ years of professional work experience as a web engineer.
• Bachelor's or Master's degree in Computer Science or a related field.
• Rock-solid comprehension of software engineering fundamentals. Proficiency in a few programming languages. JavaScript and Python are strongly preferred.
• Deep experience in web development, including both frontend and backend. Experience in one of the major frontend frameworks such as React/Next.js/Vue.
• Proficient with relational databases such as Postgres.
• Strong communication skills. Good at writing concise documents.
• Desire and passion to work in an early-stage startup. Comfortable handling ambiguity in a fast-paced environment.

Our Primary Web Technologies

React, Next.js, TypeScript, Zustand, Tailwind CSS, Python, FastAPI, SQLAlchemy, PostgreSQL

How To Apply

If you are ready to embark on an exhilarating journey at the forefront of AI, seize this incredible opportunity and apply here. We eagerly anticipate hearing from you!

Note: Compensation and equity will be market-competitive for well-capitalized, early stage startups and will be discussed during the interview process.

Compensation Range: $140K - $170K