Cambium Assessment Tech Stack

K-12 assessment platform processing 131M annual tests at scale

Education Administration Programs Washington, District of Columbia 501–1,000 employees Public Company

Cambium Assessment operates a high-transaction assessment platform delivering 131M tests annually across 16M students, with 1.5M simultaneous test-takers — a scale that explains their engineering-heavy hiring mix and acute focus on database performance optimization. Their tech stack (SQL Server, AWS, BigQuery, Databricks, ClickHouse) and active project list (legacy refactoring, automated scoring, generative AI agents) reveal a company modernizing a mission-critical testing infrastructure while layering AI-powered features into an older system.

Tech Stack 29 technologies

Core StackSQL Server C# AWS .NET Vue React ClickHouse BigQuery Databricks AWS Lambda AWS RDS CloudWatch Python Jira R Amazon RDS Amazon Redshift AWS ECS API Gateway R Markdown SQL Server Reporting Services Excel Microsoft Access SQL

What Cambium Assessment Is Building

◆Challenges

Scaling heavy transactional loads
Refactoring legacy systems
High-transaction database performance
Automated scoring of student responses
Complex statewide testing programs
Maintaining technical quality of assessments
Performance optimization
Performance problems in cloud-native databases
Scaling database systems
Scalable, safe ai systems

▲Active Projects

Redesign older systems
Refactor legacy systems
Automated scoring methods
New front end development
State assessment projects
Generative ai agent development
Agent orchestration systems
Generative ai integration
Ai-powered solutions
Front end experiences

Hiring Activity

Accelerating30 roles · 15 in 30d

Department

Engineering

Data

Research

Product

Education

Ops

Support

Seniority

Senior

Intern

Mid

Junior

Lead

Principal

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About Cambium Assessment

Cambium Assessment is a public K-12 education assessment company operating the infrastructure behind standardized testing in U.S. schools. They administer tests for state education agencies, school districts, and families — delivering insights to educators, students, and 26M family members via their Family Portal. The platform spans the full assessment lifecycle: test delivery, automated scoring of student responses, data analytics, and reporting. At 501–1,000 employees based in Washington, D.C., they serve a mission-critical, regulated market with strict performance and security demands.

HeadquartersWashington, District of Columbia

Company Size501–1,000 employees

Hiring MarketsUnited States

Frequently Asked Questions

What tech stack does Cambium Assessment use?

C#/.NET, SQL Server, AWS (RDS, Lambda, ECS, CloudWatch, API Gateway), React, Vue, BigQuery, Databricks, ClickHouse, R, and Python. They rely heavily on SQL Server and AWS for transactional database performance.

What is Cambium Assessment working on?

Modernizing legacy systems, building automated scoring methods, developing new front-end experiences, refactoring legacy infrastructure, and integrating generative AI agents and orchestration systems into the platform.