Founding GTM Engineer

Proton.ai; Cambridge; On-site; GBP 100,000 - 140,000; Full time

Benefits offered by this job

Equity

Flexible schedule

Unlimited PTO

Wellness days

12 weeks paid parental leave

Health benefits

401k with employer contribution

Company-paid off-sites

Job summary

Proton.ai seeks a senior IC Revenue Operations Engineer to design, build, and scale systems powering GTM data, dashboards, and AI-native infrastructure. You will own end-to-end HubSpot data models, automations, and reporting, collaborating with Marketing, Sales, CS, and Finance.

You will build outbound automation, enrichment pipelines, signal-driven plays, and lead scoring in Clay, ensuring CRM hygiene and trusted dashboards for forecast updates and territory governance.

Qualifications

• Strong data intuition and executive communication are essential.
• Production experience with Claude or comparable models (automation, dashboards, agentic workflows, MCP servers).
• HubSpot architecture and admin expertise with data models and automations.
• Clay workflow creation for outbound, enrichment, and scoring.

Responsibilities

• Design, build, and scale GTM data workflows, dashboards, and AI-native infrastructure.
• Own HubSpot data models, automations, and reporting end-to-end.
• Build outbound automation, enrichment pipelines, signal-driven plays, and lead scoring in Clay.
• Maintain CRM hygiene: dedupe, validation rules, field governance, and ownership integrity.
• Model and monitor pipeline health, forecast accuracy, and segment-level performance.
• Define territory, coverage, and governance with clear operating rhythms.

Skills

Data intuition

Executive communication

AI-native operations

HubSpot architecture

CRM data governance

Multi-agent orchestration

Claude models

Clay workflows

Revenue systems design

Tools

HubSpot

Clay

Claude

Job description

• Revenue Operations is the engine room of Proton’s go-to-market. We’re hiring our first GTM Engineer to design, build, and scale the systems that power it: the data, workflows, dashboards, and AI-native infrastructure that make every BDR, AE, and CSM faster every quarter
• This is a senior IC role. You’ll write the workflows, build the dashboards, and ship the systems yourself, partnering closely with Marketing, Business Development, Sales, CS, and Finance
• Today, much of this work runs through an external agency. You’ll absorb that scope, exceed it, and go far beyond — into clean data architecture, forecasting, deal desk, comp, and AI-native ops that compound over time
• Build AI agents from scratch that autonomously run GTM workflows: lead enrichment and scoring, outbound campaign generation, pipeline hygiene, signal monitoring, forecast updates, comp queries, deal desk triage
• Own the HubSpot stack end-to-end: data models, automations, reporting. You read every release note and ship the workflow by Friday
• Build outbound automation, enrichment pipelines, signal-driven plays, and lead scoring in Clay. Ship clean systems without over-engineering
• Own CRM hygiene end-to-end: dedupe, validation rules, field governance, ownership integrity, so dashboards, forecasts, and outbound plays sit on data reps actually trust
• Instrument the lead → opportunity → closed-won funnel and own pipeline health, forecasting hygiene, and segment-level performance
• Build new-business and net revenue retention forecast models the executive team trusts in board prep, with documented and defensible assumptions
• Design territory, coverage, and governance: accurate segmentation, clean ownership transitions, documented operating rhythms
• Stay on the cutting edge of agentic AI: model capabilities, tool-use patterns, multi-agent orchestration, MCP, evals, and bring what you learn into production fast
• Build reusable agent infrastructure and documentation so the GTM team can operate and trust what you’ve built
• Take projects from 0→1: prototyping, deployment, monitoring, iteration

Benefits

• Company stock options: We believe everyone should own a part of something they help build, so we offer company equity to all employees.
• Flexible schedule: Work is important to us. As is being flexible. We know life doesn’t always land outside of a 9-5 schedule and make space for you to live your life.
• Unlimited Required PTO: We offer unlimited PTO, and we make sure everyone takes at least 2 weeks off per year.
• Company wellness days: In addition to company holidays, we offer wellness days, when the whole company takes a day off to rest and recuperate.
• 12 weeks paid parental leave: 12 weeks paid parental benefit for all parents (birthing, non-birthing, adopting, fostering).
• Health benefits: Get access to great healthcare benefits.
• 401k with employer contribution: We believe it’s important to help our team plan for the future. For U.S. employees (for now), we directly contribute a 3% match of your salary to a 401k.
• Company-paid off-sites: Enjoy in-person brainstorming and team-building. All expenses covered so you can focus on bonding with the entire team.

You bias toward ownership, urgency, and shipping in ambiguityYou’ve got strong data intuition and clear executive communication: you know what matters, what’s noise, and how to translate one into the otherYou have a deep passion for AI: you keep up with the latest releases, experiment constantly, have fully integrated AI into your workflows, and vibe code on the weekendYou’ve built revenue systems from scratch — not just maintained someone else’sYou have production experience with Claude or comparable models (automation, enrichment, dashboards, agentic workflows, MCP servers)Clay is muscle memory; you can describe Clay tables you’re proud of and whyYou’re a HubSpot expert at the architecture and admin level; you probably have opinions about associations