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Calder

Delivers targeted luxury-brand audience segments

Software Engineer - Crowdsourcing Platform

Backend EngineeringUpdated on Nov 13
Full-timeRedwood City, CA, USA$125k - $250.5k /yrIn-person

About the Job

Requirements

  • Deep experience building critical backend software supporting thousands or more users.
  • Expertise in distributed systems, including data platforms or horizontally scaled databases.
  • Experience architecting and building workflow orchestration systems.
  • Strong analytical skills in a relevant field such as machine learning, mathematics, statistics, or quantitative economics.
  • Proficient programming skills in Python, Node.js, and/or Rust.

Responsibilities

  • Drive the design and implementation of the core crowdsourcing platform and systems.
  • Partner across product, operations, and AI functions to identify and solve problems.
  • Plan technical roadmaps and contribute to higher-level technical strategy.

Desired Qualifications

  • Experience scaling and refactoring production systems for order-of-magnitude growth; experience at hypergrowth startups is a plus.
  • Experience building marketplaces, contributor platforms, or globally deployed products.
  • Experience with Internet of Things architectures or supporting remote sensors or edge-deployed custom hardware.
  • Experience with diverse extract, transform, and load (ETL) systems and understanding of their tradeoffs.
  • Attention to reliability and consistency.

About the Company

Calder

Delivers targeted luxury-brand audience segments

Calder is a media technology platform that helps brands connect with high-value affluent consumers using the Global Wealth Graph, which analyzes how wealthy individuals browse, research, and buy across industries and regions. It creates precision audience segments for over 100 sectors, activating them on major ad buying platforms without requiring client tech integration. Segments are tailored by region and city to reflect context and perception, and offered as pre-built or custom packages in 75+ countries. The goal is to improve advertising efficiency by directing spend toward audiences with higher potential value, differentiating from competitors by focusing on affluent audiences and brand-appropriate environments rather than broad reach.

Company size
11-50
Company stage
Not listed
Total funding
Not listed
Headquarters
New York City, New York
Founded
2025

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