Full Stack Engineer

About Letter AI
Letter AI is the world’s first revenue enablement platform powered natively by AI. We’re reimagining the end-to-end revenue journey by turning real customer conversations and account data into actionable insights, personalized coaching, meeting prep, and next steps.
Revenue teams aren’t asking for more content or tools. They’re asking for better outcomes. Letter does just that, empowering them to learn faster, sell smarter, and win more.
We recently raised a $40M Series B and are already helping leading companies like Adobe, Lenovo, and Figma transform how their teams work. We 10xed our revenue last year and are looking for the best of the best in the Bay Area to help us build on that momentum.
The Role
We are looking for a full-stack engineer to join our team as one of our engineering first hires. You will play a pivotal role in shaping the company, our culture, and our platform. You will fully own critical customer features powered by the latest advances in generative AI.
Your key responsibilities will include:
Develop high-performance, responsive customer features in Python, React, Redux, and Typescript
Implement LLM-powered features across multiple modalities: text, image, video, audio
Collaborate closely with the backend team to ensure smooth integration and contribute to architectural decisions
Understand customers needs and use that knowledge to improve the user experience.
Qualifications for the Role
3+ years of experience in full-stack software development
Proven experience working with TypeScript/JavaScript, React, Python web development, API integration
Familiarity with database fundamentals and infrastructure management using Terraform and AWS
Knowledge of automated UI testing frameworks
Past experience or strong interest in generative AI
Highly collaborative mindset with strong communication and problem-solving skills.
How We Operate
At Letter AI, we want you to be unapologetically you while operating with our core principles in mind:
Customer-obsessed:
Make your customers unreasonably happy and everything else will fall into place
Ambitious yet practical:
Set big goals, but stay grounded with disciplined execution and ruthless prioritization
Direct yet kind:
Never hold back from speaking your mind, but do so in a way that is kind to your colleagues
Driven yet humble:
Push for excellence and deliver fast, but keep your humility
What’s In It For You?
Compensation:
$130k–$240k base salary, depending on
experience, expertise, and expected impact
Ownership:
Every full-time teammate receives Letter stock options, so you can share in the value you help create
Benefits that have you covered:
Comprehensive medical, dental, and vision coverage, plus a 401(k) with company match
Benefits for the everyday:
Commuter plan with company contribution, connectivity, and wellness benefits, plus daily lunch in our Chicago and San Francisco offices
Team events:
Happy hours, dinners, events, and offsites with a team that genuinely enjoys spending time together
Build with us:
Join a fast-growing startup where you’ll have meaningful ownership and impact, working closely with top-notch teammates to help build and scale Letter