GTM Engineer

Company Description

Lifesight is the Agentic Unified Marketing Measurement Platform. We unify causal MMM, incrementality testing, and attribution into one system that marketing and finance teams trust and that AI agents can call.

We're bootstrapped-to-scale and profitable. Our products are agentic. Our internal operations should be too.

Role Description

You'll be a founding GTM Engineer at Lifesight, building the systems that help our marketing, sales, and customer success teams operate at 10. You won't replace those teams you'll give each person on them AI leverage backed by clean data, well-designed tooling, and agentic workflows.

GTM Engineer is a fairly new discipline. Hybrid of software engineer, RevOps engineer, and agent builder. You ship production code with Claude Code every week. You work shoulder-to-shoulder with go-to-market teams you're not a ticket-taker and your work spans the entire customer lifecycle from first-touch to renewal.

What you'll own:

• The GTM data layer a unified data service that mirrors Salesforce, HubSpot, call-intelligence platforms, analytics, and every ad platform into one queryable layer. Every AI agent and every GTM team reads from it.
• Pre-MQL systems signal intelligence (external intent, competitor churn, funding events, job changes, community chatter), approval-gated AI outbound workflows, and owned-channel optimization agents across SEO, CRO, and paid media.
• Marketing content + campaign pipelines AI-drafted blog pillars, newsletters, founder LinkedIn posts, ad creative, nurture sequences. Humans edit and approve; agents produce and ship on cadence.
• Post-MQL systems integration with GTM OS (our internal revenue-lifecycle platform), call intelligence, deal-risk scoring, mutual action plan generation, renewal and expansion automation.
• Practical marketing measurement an attribution layer that closes the loop on what's working, built on our live analytics and CRM stack.
• Internal tooling small, sharp tools that replace spreadsheets and manual workflows across the GTM organization.

Your first major project will be leading our customer-acquisition and demand-gen transformation shipping plumbing fixes, standing up the unified data layer, and getting the first production agents into the hands of our marketing and sales teams. A design spec and implementation plan are already written; you'll pick up execution from day one.

You are:

• A builder. You write code daily and you ship. You've built internal tools that real teams adopted.
• A marketer. You know how marketing works and what needs to be done to build revenue pipeline and make profitable spend decisions
• A systems thinker. You see GTM as a graph of systems, not a funnel diagram. You know where leverage lives.
• Comfortable with ambiguity. You design your way through under-specified problems and bring clarity back.
• Opinionated about AI. You know the difference between AI-washed and genuinely agentic. You have a point of view on where LLMs help and where they don't.
• Collaborative. You sit with a marketer, a salesperson, a CSM understand their workflow, then automate the parts they shouldn't have to do manually.

You've done:

• 5+ years shipping software and working with GTM teams. Title doesn't matter outcomes do.
• Built production systems in Python or TypeScript + SQL + REST APIs + webhooks. PostgreSQL experience required.
• Worked hands-on with Salesforce and HubSpot at admin + API level. Written real integrations, not just used the UI.
• Integrated at least one analytics or ad-platform API in production (GA4, GSC, Google Ads, LinkedIn Ads, Meta, Bing Ads).
• Shipped something with the Claude or OpenAI API in production not a demo, something that runs and produces real value.