join theteam.
The teams at Coursera, Notion, ClickUp, Handshake, Lemonade, and Mercury run their lifecycle marketing on our agents. We raised $17M to prove that always-on AI — not hand-built campaigns — is how 1-1 personalization gets done at scale. We're 11 people hiring the founding team that owns it: on-site in San Francisco, pay public on every role, working directly with the founders.
5 open roles · $17M series a · leadership reads every application within 48h
we taught machines to market.
now we need humans.
Senior Infrastructure Engineer
Customer Success Manager
Full Stack Software Engineer
Founding Account Executive
Forward Deployed Engineer
Senior Infrastructure Engineer
cards flip through all 5 open roles — click one to apply, or see the full list with details ↓
"Every message a company sends should feel like it was written for exactly one person. We're building the machine that makes that true — and we're excited to build the future with you."
what you actually get
small team. big table.
Eleven people, one room in San Francisco, and a standing rule that wins get celebrated properly. Here's what that actually looks like.
six values we run on — not poster words.
This is not a place to coast. It's a place to compress a decade of learning into two years, ship things you're slightly afraid of, and watch them run at a scale most engineers never touch. These are the values we hold each other to, every day.
not a family.
>> skills and numbers.
be passionate. give it all.
act short term.
communication is the key.
not AI first.
you won't maintain software.
you'll raise a workforce.
JustAI is a team of autonomous agents that run lifecycle marketing end to end — and a team of humans who make those agents smarter every week. Whatever you join to do, this is the machine you're building.
Strategy Agent
Uncovers patterns between users who convert and those who don't — predicting rich cohorts, untapped segments, and high-leverage moments. The problems here are pure applied ML at unfair scale.
Creative Agent
Blends brand voice, user insight, and product knowledge into conversion-ready content — millions of on-brand variants, zero copywriter burnout. LLM orchestration with real constraints and real stakes.
Decisioning Agent
Real-time reinforcement learning across channels: identifies winning variants and routes traffic to what performs, turning every send into a self-improving loop. Bandits, in production, at billions of decisions.
Data Agent
Turns billions of events into instant, actionable insight so no one ever waits for an analyst again. The infrastructure under this is the kind of thing infra engineers brag about at parties.
five seats.
choose your weapon.
All roles are in San Francisco — we build shoulder to shoulder. Pay ranges are public on every role. Click one for the full picture, apply right here in two minutes. Every application is read by leadership, not a filter.
We move terabytes of campaign and engagement data — and you'd own the foundation it all runs on: the pipelines that feed our models, the compute and storage substrate, and the reliability, observability, and cost of the whole system. An early, high-ownership role: you'll build from 0→1 and own it end to end as we scale.
what you'll do
- Own and scale large-scale batch & streaming pipelines, warehouse design, and the storage layer.
- Run and harden the compute platform: orchestration, autoscaling, isolation, containerized deploys.
- Own metrics, tracing, alerting, and SLOs — drive down incidents and cost.
- Tackle the lowest-level scaling problems: partitioning, throughput, distributed failures at volume.
what we look for
- 5+ years in infra, SRE, or data platform roles, operating large systems at a low level.
- A 0→1 builder — you've stood up infrastructure from scratch and owned it as it grew.
- Battle scars from Kubernetes, Spark-class processing, or high-throughput streaming in production.
- You treat infra as a product with users. ML systems experience is a plus.
Design, implement, and QA large customer features end-to-end — from scoping emergent customer needs with product and design to shipping across our entire stack. Big ambiguous problems, clear milestones, measurable outcomes.
what you'll do
- Own projects from initial scoping to production — break ambiguity into milestones.
- Own quality across the full lifecycle: testing, launch, and rollout.
- Partner with product and design on tradeoffs between feasibility and experience.
what we look for
- 2+ years of full-stack experience with strong backend skills.
- You've built platforms end-to-end with a focus on product requirements.
- Quick learner who thrives in a fast-paced, constantly evolving environment.
Live at the intersection of AI, engineering, and customers. Embed with enterprise customers, understand their marketing and data infrastructure, and design how JustAI plugs in to reshape their workflows.
what you'll do
- Architect integrations between JustAI and Braze, Iterable, Customer.io, Segment, and Snowflake.
- Prototype new workflows and AI agents that graduate into the core product.
- Translate customer needs into scalable platform features.
what we look for
- CS degree or equivalent software engineering experience.
- Strong communicator — you'll be in the room with customers.
- Genuine excitement about working directly with the people who use what you build.
Be the face of JustAI for enterprise customers — effectively a fractional lifecycle marketer across multiple companies, designing strategies from scratch and scaling them with AI decisioning. Strategy, execution, and customer success in one seat.
what you'll do
- Own a portfolio of enterprise accounts as their trusted strategic partner.
- Design lifecycle strategy 0→1 across email, push, and in-app.
- Move customers from manual campaigns to always-on, self-optimizing systems.
- Close the loop: bring structured customer insight back to product and engineering.
what we look for
- 2–6 years in lifecycle marketing, growth, consulting, or customer success.
- Experience with B2C products or high-scale user journeys.
- AI-forward builder mindset — proactive, resourceful, outcome-obsessed.
- You measure yourself in revenue and engagement, not activity.
Our first dedicated sales hire, selling an AI marketing platform that Coursera, Notion, and Handshake already run on, backed by a $17M Series A. Own revenue from first conversation to signed contract, working directly with the CEO — with founder air cover on every deal.
what you'll do
- Run end-to-end sales cycles: discovery, demos, negotiation, close.
- Sell to CMOs and growth leaders at enterprise companies.
- Own pipeline creation — outbound, inbound, strategic prospecting.
- Define our early sales process, messaging, and ideal customer profile.
what we look for
- 2+ years as an AE, closing mid-market or enterprise deals end to end.
- You can run the show — context-switch, prioritize, operate autonomously.
- Fluent with both technical and non-technical stakeholders.
- You thrive in fast-moving, ambiguous, 0-to-1 environments.
days, not months.
we move like we build.
apply right here
Two minutes, on this page. No account creation, no cover letter theater. Leadership reads every application within 48 hours.
leadership chat — 30 min
A real conversation with a founder about the work: your judgment, your taste, the hardest thing you've shipped. No riddles.
working loop — 2 hrs
A focused on-site session on a real problem from our roadmap. You see exactly how we operate; we see exactly how you think.
references & offer
Quick reference checks, then an answer within days — always with honesty. If it's yes, we'll make it very hard to say no.
the next era of marketing is being written right now.
hold the pen.
If you read this far, some part of you already knows. Don't see your role? Convince us we need one.