Software Engineer, Full Stack (Staff)

Lightfield
HQ: San Francisco, US
On-site

Who this role is best for

Geared toward experienced full-stack engineers comfortable with building AI-driven CRM systems, with a preference for candidates with a background in large-scale system development and a strong interest in applied AI.

Best fit for

  • Experienced full-stack engineers with a passion for AI-driven CRM and a history of leading complex system development.
    — “building highly scalable, performant, and reliable features and systems that deliver exceptionally innovative AI product experiences”
  • Individuals with a strong background in both front-end and back-end technologies, particularly in TypeScript, React, and Node.js.
    — “You’re excited about Large Language Models (LLMs) and the opportunity to build systems that support and leverage them”

Things to consider

  • Candidates must be prepared to take end-to-end ownership of projects and assume leadership responsibilities.
    — “engineers take end-to-end ownership of projects from inception to impact”

How to stand out

  • Highlight experience in large-scale system development and AI integration in your resume and interviews.
    — “Experience building large-scale, high-performance, and mission-critical systems”
  • Emphasize your ability to lead technical design discussions and mentor others in your application materials.
    — “Lead technical design discussions, mentor teammates at multiple levels”
  • Showcase your communication skills by including examples of explaining technical decisions to non-technical stakeholders.
    — “Clear communicator, capable of articulating technical decisions to both technical and non-technical stakeholders”
Pace · Fast PacedCollaboration · HighAutonomy · HighDecision Impact · Team

Derived from job-description analysis by Serendipath's career intelligence engine.

What success looks like

  • Collaborate with product leaders to define strategic initiatives, identify critical customer problems, and drive requirements into technical execution.
Typical background
7+ years of experience in software development

Skills & requirements

Required

Full-stack DevelopmentLarge-scale SystemsHigh-performance SystemsMission-critical SystemsComplex Customer WorkflowsLarge-scale Data ProcessingObservability And MetricsTechnical DesignCode ReviewsEngineering Best PracticesRecruitingMentorshipKnowledge-sharingProduct-mindedAgile MethodologiesScalabilityReliabilityPerformanceLlmsTypeScript

Preferred

Experience With TomeExperience With LlamaExperience With InstagramExperience With GoogleExperience With Salesforce

Stack & domain

Full-stack DevelopmentTypeScriptReact.jsNext.jsNode.jsApollo GraphqlPostgreSQLLarge Language Models (llms)ObservabilityMetricsCode ReviewsRecruitingMentorshipKnowledge-sharingCommunicationTeamworkLeadershipProblem-solvingAmbitionInitiativeAdaptabilityAttention To DetailCRMAICustomer ConversationsEmailMeetingsCustomer WorkflowsLarge-scale Data ProcessingBackend SystemsProduction Environments

About the role

Original posting from Lightfield via Ashby

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 an experienced engineer who is product-minded, eager to tackle the challenge of building highly scalable, performant, and reliable features and systems that deliver exceptionally innovative AI product experiences.

At Lightfield, engineers take end-to-end ownership of projects from inception to impact, collaborating across functions and pushing the envelope on what’s possible in applied AI systems development. You’ll work alongside a talented team to deliver industry-leading solutions and play a key role in shaping Lightfield’s product and technical vision.

WHAT YOU’LL DO

  • Collaborate with product leaders to define strategic initiatives, identify critical customer problems, and drive requirements into technical execution.
  • Build and maintain complex full-stack product features and systems, end-to-end, ensuring reliability, scalability, and performance.
  • Develop observability and metrics to enable smooth operation, proactive issue detection, and continuous improvement.
  • Lead technical design discussions, mentor teammates at multiple levels, conduct thorough code reviews, and help set engineering best practices and standards.
  • Contribute to building a world-class engineering team through recruiting, mentorship, and knowledge-sharing.

WHO YOU ARE

  • 7+ years of experience in software development, with a strong background in both front-end and back-end technologies.
  • Experience building large-scale, high-performance, and mission-critical systems that support complex customer workflows and large-scale data processing.
  • You’re excited about Large Language Models (LLMs) and the opportunity to build systems that support and leverage them.
  • You have the ability to ramp quickly on tech stack that features TypeScript, React, Next.js, Node.js, Apollo GraphQL, and PostgreSQL.
  • Proven ability to design, architect, and scale backend systems in production environments.
  • Strong fundamentals in software engineering, with a degree in Computer Science or a related field (or equivalent industry experience).
  • Thrives in ambiguity, able to independently scope, plan, and lead projects while delivering results in a fast-moving environment.
  • Clear communicator, capable of articulating technical decisions to both technical and non-technical stakeholders.
  • Passionate about building products customers love, ensuring our CRM is intuitive, intelligent, and indispensable.

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

Source: Lightfield careers (Ashby)

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