Lead Developer - Identity and Audience

Data isn't a support function at Vibe, it's the fuel behind every decision the platform makes, from which ad to show to how we measure its impact. You'll join the Data Platform team and lead the Identity squad, the group responsible for attaching every event Vibe observes to a real identity: the foundation for targeting, measurement, and the training data our models learn from. This is a player-coach role on a small, high-leverage team, you, a staff software engineer, and an ML engineer, and it exists because identity resolution at Vibe's scale has outgrown ad hoc ownership and needs someone who can both push the algorithms forward and set the technical direction. You'd want this job because you'll own one of the hardest, most consequential problems in the stack end to end; because you'll stay hands-on with clustering and entity resolution at real US scale rather than managing from a distance; and because you'll shape how identity evolves as the industry moves toward a privacy-first world.

Technical Leadership

Set the technical direction and roadmap for Vibe's identity stack end to end

Design and build clustering algorithms and pipelines that resolve identity at US scale

Make architecture decisions that scale economically and quantify their impact

Anticipate scaling pain before it turns into an incident

Drive systematic improvements to identity resolution accuracy

Reliability, Scale & Cost

Build observability into identity pipelines with meaningful alerts and healthy SLOs

Profile and optimize compute and storage across Dagster, Spark, and Iceberg

Treat infrastructure spend as a first-class engineering concern

Expanding the Stack

Extend identity capabilities into richer audience construction and attribution

Build platform-level tooling so every team can resolve identity behind their events

Design identity approaches built for a privacy-first future

People & Partnership

Lead the squad's senior engineer through 1:1s, feedback, and career development

Represent identity in cross-team Data Platform roadmap decisions

Translate ambiguous stakeholder requests into concrete technical deliverables

Push back on requests where the right call is "not yet" or "not this way"

8+ years building and operating production ML or data systems, including leading technical work as a tech lead, staff engineer, or team lead

Hands-on experience with large-scale entity resolution, clustering, or graph problems, with the ability to own and challenge the algorithms themselves

Strong distributed-systems foundations across a modern orchestrator (e.g. Dagster), distributed compute (e.g. Spark), and large-scale storage (e.g. Iceberg)

A track record of building evaluation frameworks and using them to drive measurable algorithmic improvements

Experience managing performance and cost at genuinely large data scale

Strong cross-functional communication, with the ability to adjust detail level by audience and align stakeholders with conflicting priorities

Experience in streaming TV advertising or programmatic advertising

At Vibe, we run on three values: Impact, Ambition, and Urgency. We tie every goal to a real business outcome, think 10x rather than settling for good enough, and move daily rather than waiting for perfect conditions.

You'll thrive here if you own outcomes without needing direction, default to action, and hold yourself to results, not effort.

This is a high-performance environment with high-performance rewards: you'll work alongside people who push you, with real ownership over hard problems in a market that's moving fast.

If that sounds like the best version of your career, we want to meet you.

For candidates based in France, compensation is determined by the local market.

At Vibe, we want you to build something, own something, and grow fast. Here's how we prove it:

Variable pay — based on objectives you hit. No arbitrary targets.

Hybrid flexibility — We're in the Heart of Paris and our team is in 3x a week!

Health insurance — Full coverage via Alan.

Meal vouchers — Via Swile.

Annual offsite — The whole team, once a year, somewhere worth the trip.

Tech Syncs — Engineering and Product meet in person at least quarterly, worldwide.

We respect your time. Here's exactly what to expect — no surprises, no ghosting.

Recruiter screen — 30 min. We'll share context; you'll share yours.

Manager interview — Meet the person you'd work with directly.

Technical interview — A real problem, not a trick. We'll work through it together.

Calibration interview — A senior leader joins to ensure we're holding a consistent, high bar.

Offer — Fast. We don't let good decisions sit.

Reference checks — Two calls, handled with discretion.

Vibe is an equal opportunity employer. We evaluate all applicants without regard to race, color, religion, national origin, gender, gender identity or expression, sexual orientation, age, disability, veteran status, or any other characteristic protected by law.

We believe the best ideas come from teams with different backgrounds, perspectives, and experiences. If you need a reasonable accommodation during the application or interview process, please let us know.

Referral Instructions Being referred? Ask your contact to submit your application directly on your behalf.