Full-Time

Director of Finance

Updated on 9/4/2026

HumanSignal

HumanSignal

51-200 employees

Data labeling platform with human supervision

No salary listed

San Francisco, CA, USA

In Person

On-site in the San Francisco Bay Area; no fully remote option indicated.

Category
Finance & Banking (1)
Required Skills
Business Analytics

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Requirements
  • 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
  • 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.
Responsibilities
  • 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
  • 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
  • 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
  • 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
Desired Qualifications
  • Experience with services or professional services financial modeling (utilization, project margins, blended rates) is a strong plus
  • 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.

HumanSignal provides a data labeling platform that helps improve AI models by combining automation with human supervision. It offers Label Studio as a subscription-based tool with features like custom UI building, templates, team permissions, and workflow options, supporting multiple data types. Clients subscribe, label data using templates and configurable workflows, and use human review where needed, with options for integrations and advanced support. The goal is to help organizations produce high-quality labeled data at scale, tailored to their needs through a flexible platform and professional services.

Company Size

51-200

Company Stage

Series A

Total Funding

$25.2M

Headquarters

San Francisco, California

Founded

2018

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Simplify Jobs

Simplify's Take

What believers are saying

  • June 2026 product updates targeted agentic AI evaluation and multimodal interfaces.
  • HumanSignal raised $25 million from Redpoint and existing investors, supporting expansion.
  • The Erud AI acquisition positions HumanSignal for frontier model training demand in 2026.

What critics are saying

  • August 2026 CVE-2026-72560 exposed SSRF in Label Studio through version 1.24.0.dev0.
  • Open-source competitors can copy labeling features quickly, compressing HumanSignal’s software margins.
  • If Services fails, Enterprise buyers can bypass HumanSignal by hiring cheaper annotation vendors.

What makes HumanSignal unique

  • Label Studio 1.23 added vector annotation, interactive task source, and data manager improvements in 2026.
  • HumanSignal combines open-source Label Studio with enterprise workflows, permissions, and custom interface building.
  • November 2025 Erud AI acquisition added physical data labs and expert annotation services.

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Benefits

Remote Work Options

Performance Bonus

Growth & Insights and Company News

Headcount

6 month growth

-1%

1 year growth

-11%

2 year growth

-12%
TechCrunch
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Heartex, the well-funded machine learning data labeling startup, is launching a major update to its platform today that will open up new use cases for its tools by making annotating audio files in the commercial and open source versions of its Label Studio a lot easier for its users. These updates include a new user interface, optimized for working with audio files, the ability to annotate longer files (up to two hours in length) and millisecond controls in the built-in annotation tool. There is also now a new rendering engine for displaying waveforms. In a previous update, Heartex also added to its tool features like frame-by-frame video object tracking and an overhauled annotation UI.The company says about 150,000 users are currently relying on Label Studio, with more than 95 million annotations created so far.Image Credits: Heartex“When we were originally thinking about building the data labeling solution, we did a lot of data scientist interviews,” Heartex co-founder and CEO Michael Malyuk told me. “And what we figured out is that many of them say they don’t have enough flexibility with existing tools. There is a tool for images, but you can only put a single image on the screen

TechCrunch
May 18th, 2022
Heartex raises $25M for its AI-focused, open source data labeling platform

Heartex, a data labeling firm, has raised $25 million in a venture funding round, bringing its total raised to $30 million.