Letter AI Logo

Letter AI

Full Stack Engineer

Reposted Yesterday
Hybrid
Chicago, IL, USA
Mid level
Hybrid
Chicago, IL, USA
Mid level
Develop high-performance customer features using Python and React, implement AI-powered functionalities, and collaborate with backend teams to enhance user experience.
The summary above was generated by AI
About Letter AI
Letter AI is the world's first unified revenue acceleration platform powered natively by generative AI. Our platform empowers sales teams at customers like Lenovo and Redpanda to ramp up faster with AI-powered training and coaching, instantly find and personalize collateral for customers, and engage their buyers with the industry's first AI Sales Room. We recently raised a $40M Series B led by Battery Ventures, with participation from existing investors including Y Combinator, Lightbank, Northwestern Mutual Future Ventures, Stage 2 Capital, and Formus. The round comes just four months after announcing our Series A, indicating a shift we're seeing in real time: revenue teams aren’t asking for more content or tools. They’re asking for better outcomes, and Letter AI is bringing those outcomes to life! We 10Xed our revenue last year and are looking for the best of the best in the Bay Area to join us on the adventure 📈.

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 include:
  • 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.

As a part of the team at this early stage, you will not only receive competitive salary and benefits, but also a meaningful equity stake in the company.

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

Join us on this exciting journey to build the world's next generational sales tech company. We look forward to hearing from you!

Similar Jobs

Yesterday
In-Office or Remote
Chicago, IL, USA
Senior level
Senior level
HR Tech • Other • Professional Services
Design and ship scalable full‑stack applications using React, Node, and TypeScript; integrate LLMs and AI services (RAG, embeddings, vector search); build supporting data/retrieval layers; measure and optimize AI feature quality, latency, and cost; collaborate with cross‑functional teams and DevOps; maintain secure, testable code and share AI/web technology best practices.
Top Skills: Anthropic)GraphQLJavaScriptJwtLlm Apis (OpenaiMongoDBNode.jsOauthPostgresReactRestTypescript
8 Days Ago
Remote or Hybrid
USA
155K-170K Annually
Mid level
155K-170K Annually
Mid level
Fintech • Mobile • Social Impact • Financial Services
Build and scale consumer-facing mobile and web applications and backend services. Own features end-to-end across frontend and backend, optimize databases and queries, integrate third-party APIs, implement algorithms for risk and transaction evaluation, improve reliability and CI/CD, and contribute to testing, monitoring, and internal tools to support customer operations.
Top Skills: Ci/CdDockerEs6GCPGraphQLJavaKubernetesReactReact NativeRestSQLTypescript
8 Days Ago
Remote or Hybrid
USA
170K-190K Annually
Senior level
170K-190K Annually
Senior level
Fintech • Mobile • Social Impact • Financial Services
Senior fullstack engineer to build and scale Brigit's consumer finance platform. Own end-to-end features across frontend (React/React Native/TypeScript) and backend (Java/REST/SQL), optimize database and APIs for high scale, integrate 3rd-party services, implement risk and transaction algorithms, improve CI/CD, testing, monitoring, and internal tooling to support millions of users.
Top Skills: Ci/CdDockerGCPGraphQLJavaKubernetesReactReact NativeRestSQLTypescript

What you need to know about the Chicago Tech Scene

With vibrant neighborhoods, great food and more affordable housing than either coast, Chicago might be the most liveable major tech hub. It is the birthplace of modern commodities and futures trading, a national hub for logistics and commerce, and home to the American Medical Association and the American Bar Association. This diverse blend of industry influences has helped Chicago emerge as a major player in verticals like fintech, biotechnology, legal tech, e-commerce and logistics technology. It’s also a major hiring center for tech companies on both coasts.

Key Facts About Chicago Tech

  • Number of Tech Workers: 245,800; 5.2% of overall workforce (2024 CompTIA survey)
  • Major Tech Employers: McDonald’s, John Deere, Boeing, Morningstar
  • Key Industries: Artificial intelligence, biotechnology, fintech, software, logistics technology
  • Funding Landscape: $2.5 billion in venture capital funding in 2024 (Pitchbook)
  • Notable Investors: Pritzker Group Venture Capital, Arch Venture Partners, MATH Venture Partners, Jump Capital, Hyde Park Venture Partners
  • Research Centers and Universities: Northwestern University, University of Chicago, University of Illinois Urbana-Champaign, Illinois Institute of Technology, Argonne National Laboratory, Fermi National Accelerator Laboratory

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account