Software Engineer, Applied AI (Staff+)

Lightfield; San Francisco (CA); On-site; USD 180,000 - 260,000; Full time

Benefits offered by this job

Competitive salary

Meaningful early equity

Health insurance (medical, dental, v​i

3 weeks of PTO

11 paid company holidays + we enjoy a冬

3 months of paid family leave

Wednesdays work from home

Regular team dinners, events, offsites

401k plan

Other perks include: commuter andLunch

Job summary

Lightfield is seeking a seasoned software engineer to drive AI-powered product experiences. You will own end-to-end features using a stack including TypeScript, React, Next.js, Node.js, Apollo GraphQL, and Aurora PostgreSQL, focused on improving LLM-driven apps.

You’ll collaborate with product and design to identify problems, build scalable prompts and RAG pipelines, mentor teammates, and push the state of the art in AI application development at Lightfield.

Qualifications

• 7+ years of software engineering experience.
• Strong background with TypeScript, React, and modern web stacks.
• Experience with LLMs or AI product development.
• Familiarity with AI/ML concepts.
• Interest in LLMOps and emerging AI techniques.
• Ability to drive projects with ambiguous problems.

Responsibilities

• Collaborate with product leaders to identify customer problems, scope requirements, and implement LLM-powered solutions.
• Apply LLMs as reasoning engines to build domain-specific AI assistants.
• Create and enhance prompts, applying few-shot learning and chain-of-thought.
• Develop and optimize end-to-end RAG pipelines and agent architectures with data sources.
• Improve end-to-end AI agent quality via evaluation and iteration.
• Build systems/tools enabling high-velocity experimentation and customized experiences.
• Stay at the forefront of AI research and techniques.
• Shape technical direction and best practices for AI at Lightfield.
• Help build a world-class engineering team by recruiting and mentoring teammates.

Skills

TypeScript

React

Next.js

Node.js

Apollo GraphQL

Aurora PostgreSQL

Education

Bachelor's degree in Computer Science

Job description

About Lightfield

Lightfield is reimagining CRM as a world model of a business. By learning from emails, meetings, and customer conversations, we’re building a living understanding of how a company works—so AI can help teams anticipate what comes next, make better decisions, and take action.

More than 5,000 companies have used the product since its November launch. We’ve raised more than $70M from Andreessen Horowitz, Coatue, Maverick Ventures, and Greylock to attack the biggest software category in the world. We previously built Tome, which reached more than 25 million users, and our team brings experience from Llama, Instagram, Google, and Salesforce.

About the role

We’re looking for a driven, creative engineer who is excited about the challenge of leveraging LLMs to build exceptionally innovative product experiences.

You’ll join us at the frontier of AI product development, developing industry-leading approaches to solve important customer problems.

Engineers at Lightfield own and drive projects from inception to impact, working with teammates of all functions along the way.

You’ll also push our company’s overall product and technical vision as we learn from each project and continue to scale.

What you'll do

• Collaborate with product leaders to identify customer problems, scope requirements, and implement LLM-powered solutions.

• Apply LLMs as reasoning engines to build domain‑specific AI assistants.

• Create and enhance prompts, applying techniques like few‑shot learning and chain‑of‑thought.

• Develop and optimize end‑to‑end RAG pipelines and agent architectures to leverage public and proprietary data.

• Improve end‑to‑end AI agent quality (e.g. relevance, fidelity, latency) via empirical evaluation and iteration.

• Build and enhance systems and tools that enable high‑velocity experimentation (e.g. LLM‑powered automated evaluation) and customized product experiences.

• Stay at the forefront of AI research and incorporate state‑of‑the‑art techniques.

• Shape technical direction and best practices for AI application development at Lightfield.

• Help build a world‑class engineering team by recruiting and mentoring teammates.

Who you are

• You have 7+ years experience and the ability to ramp up quickly on a tech stack that features TypeScript, React, Next.js, Node.js, Apollo GraphQL, and Aurora PostgreSQL.

• You have explored working with LLMs, either through professional projects or personal experimentation.

• You have a degree in Computer Science or a related field, with a strong foundation in software engineering principles.

• You are familiar with AI and ML concepts (e.g. training, evaluation techniques).

• You are passionate about keeping up with and exploring the latest advancements in LLMs and LLMOps (including open source solutions).

• You are excited to develop new best practices in an emerging domain.

• You can drive a project with an ambiguous problem independently.

• You enjoy strategically balancing ambitious vision with frequent delivery of user value.

• You are able to clearly communicate your reasoning and decisions to your teammates (technical and nontechnical) at an appropriate altitude of detail.

• You are energized by building software experiences customers will use directly and depend on to do their jobs successfully.

Benefits & Perks

• Competitive salary

• Meaningful early equity

• Health insurance (medical, dental, vision)

• 3 weeks of PTO

• 11 paid company holidays + we enjoy a winter holiday break

• 3 months of paid family leave

• Wednesdays work from home

• Regular team dinners, events, offsites, and retreats

• 401k plan

• Other perks include: commuter and lunch stipend