The future of AI — whether in training or evaluation, classical ML or agentic workflows — starts with high-quality data.

At HumanSignal, we’re building the platform that powers the creation, curation, and evaluation of that data. From fine-tuning foundation models to validating agent behaviors in production, our tools are used by leading AI teams to ensure models are grounded in real-world signal, not noise.

Our open-source product, Label Studio, has become the de facto standard for labeling and evaluating data across modalities — from text and images to time series and agents-in-environments. With over 250,000 users and hundreds of millions of labeled samples, it’s the most widely adopted OSS solution for teams working on building AI systems.

Label Studio Enterprise builds on that traction with the security, collaboration, and scalability features needed to support mission-critical AI pipelines — powering everything from model training datasets to eval test sets to continuous feedback loops.We started before foundation models were mainstream, and we’re doubling down now that AI is eating the world. If you're excited to help leading AI teams build smarter, more accurate systems — we’d love to talk.

About the Role

We’re hiring a Director of Finance to own the financial backbone of HumanSignal, the company behind Label Studio. Reporting directly to the CEO, you’ll own financial planning, business analytics, and the metrics infrastructure that drives decision-making across the company, including our SaaS & labeling services business.

This is a hands-on leadership role with broad scope. You’ll partner with the executive team on strategy and planning, work cross-functionally with product, marketing, and sales, and build the financial infrastructure we need for the next stage of growth. If you’re energized by ownership, building from scratch, and operating at the intersection of strategy and execution, this is your role.

What You’ll Own

Financial Planning & Analysis

Own the full P&L and free cash flow forecast; build and maintain our long-range financial model
Lead the annual and quarterly planning cycle, including budgets, variance analysis, and ad-hoc modeling
Deliver weekly KPI reporting to the executive team and board/investor reporting packages

Revenue & Deal Operations

Run deal desk operations in partnership with Sales and Customer Success to ensure coherent deal structure and pricing
Build and manage sales commission and incentive plans
Develop, align, and drive accountability around company-wide KPIs

Labeling Services Metrics & Economics

Own the financial model for our labeling services business, including project-level profitability, utilization, and margin analysis
Partner with services leadership to develop pricing models, capacity planning, and resource forecasting
Track and report on services revenue, backlog, and pipeline as a distinct business line alongside software ARR

Board & Strategic Support

Own end-to-end board meeting preparation, including deck creation, data packages, and follow-ups
Partner with leadership on strategic initiatives, business cases, and scenario planning
Serve as primary liaison to external accounting, tax, and payroll services

What You’ll Bring

5+ years in an FP&A, finance, or business analytics role at a high-growth startup, or relevant experience in management consulting
Experience building financial infrastructure largely from scratch, you’re comfortable being the first dedicated finance hire
Strong command of SaaS metrics: ARR, NDR, CAC payback, gross margin
Experience with services or professional services financial modeling (utilization, project margins, blended rates) is a strong plus
Highly analytical with advanced modeling skills
Experience preparing board materials, investor updates, and executive-level reporting
Ability to build a case and tell a persuasive story that drives decision-making across the organization
Self-starter who can own complex projects end-to-end with minimal direction
Startup mentality, no job is too small, and you default to action over analysis
You’re familiar and utilizing all of the latest AI tooling and support to make yourself more efficient
Attention to detail. In your application, tell us about a financial model you built that turned out to be wrong, and what it taught you. We read every application and want to make sure you do the same.

What Success Looks Like

First 30 Days

Own the financial model, take over the P&L and FCF forecast and identify gaps or errors
Deliver your first board data package with minimal hand-holding
Produce an initial labeling services P&L with project-level margin visibility
Audit external accounting and payroll vendors; present a recommendation on any changes

First 90 Days

Own the full board prep process end-to-end, including the deck, data, and follow-ups
Ship a company-wide KPI framework with named owners, targets, and a weekly reporting cadence
Work alongside product to create pricing structure for new product / add-ons
Deliver a revised deal desk process with documented pricing guardrails and approval workflows

First 6 Months

Rebuild the long-range financial model to support scenario planning across software and services
Execute at least two pricing or cost optimization initiative with measurable impact
Be the person leadership relies on for any financial question, no one should need to go elsewhere

Director of Finance

TLDR