CodeSignal
CodeSignal is an AI-native skills platform combining technical assessments, AI interviewing, and learning tools for enterprise hiring and workforce development. It serves 3,000+ companies including Dropbox, Instacart, and Robinhood via subscription-based B2B and B2C offerings.
- Company typePrivate
- Founded2015
- HeadquartersSan Francisco, United States
- Headcount101–250
- GTM typeB2B and B2C
- OfferingSoftware
What CodeSignal does
CodeSignal is an AI-native skills platform that operates across the full employee lifecycle—from pre-hire technical assessment through ongoing employee upskilling. Founded in 2015 and headquartered in San Francisco, the company combines validated coding assessments, AI-powered interviewing agents, live collaborative IDE-based technical interviews, and a practice-based learning environment with an AI tutor. The platform is organized around four pillars (AI Interviewer, Skills Assessments, Live Tech Interviews, and Skills Development) plus a Learn module that delivers 300+ micro-courses and the Cosmo AI tutoring assistant. CodeSignal also offers industry-first Agentic Coding Assessments that evaluate how engineers collaborate with AI tools such as Claude Code, Cursor, and Codex, and multilingual AI Phone Interviews in 20+ languages. The technical stack is built on AWS infrastructure and integrates with Twilio (communications), Stripe (payments), Greenhouse (ATS), and Level Access (accessibility), with a public developer API for workflow integration.
The company serves 3,000+ enterprise customers including Dropbox, Instacart, UnitedHealth Group, Northeastern University, Nextdoor, Robinhood, Klaviyo, Brex, Ramp, Gusto, Greenhouse, Handshake, and Asana across technology, healthcare, financial services, higher education, and government verticals. Its go-to-market combines an enterprise field-sales motion (quote-based annual subscriptions gated by a "Book a Demo" CTA) with a product-led consumer motion through the Cosmo mobile app priced at $24.99/month or $149.99/year. CodeSignal is venture-capital-backed with $87.5M raised across four rounds, the most recent being a $50M Series C led by Index Ventures in September 2021. The co-founders, Tigran Sloyan (CEO) and Sophia Baik (COO), continue to lead the company.
CodeSignal generates revenue through three subscription-based streams: enterprise skills assessment, enterprise skills development via Learn, and the Cosmo consumer app. The platform maintains enterprise-grade compliance (SOC 2 Type II, ISO 27001, GDPR, CCPA, FERPA, EU-U.S. Data Privacy Framework), which serves as procurement gating for regulated and public-sector buyers. Strategic partnerships extend reach and content, notably with Harvard Business Review Press for business learning content and Transform Skills Lab for workforce-education distribution. The company is privately held and actively investing in product expansion, with multiple launches across AI authoring, agentic assessment, multilingual interviewing, and consumer learning between mid-2025 and mid-2026.
CodeSignal firmographics
Firmographics- Name
- CodeSignal
- Legal name
- CodeSignal Inc.
- Website
- https://codesignal.com
- Company type
- Private
- Founded year
- 2015
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Short description
- CodeSignal is an AI-native skills platform combining technical assessments, AI interviewing, and learning tools for enterprise hiring and workforce development. It serves 3,000+ companies including Dropbox, Instacart, and Robinhood via subscription-based B2B and B2C offerings.
- Ownership category
- akta.pro rank
CodeSignal industry classification
Industry- Product category
- Technical Skills Assessment Platform
- NAICS
- Computer Training (611420), Professional and Management Development Training (611430)
- SIC
- Services-Prepackaged Software (7372), Services-Educational Services (8200)
- akta.pro primary industry
- Coding & Programming Learning Platforms (EDAFANAA)
- akta.pro secondary industries
- eLearning & Microlearning Module Development (EDAGAKAD), IT, Systems & Tools Onboarding (Access, Apps, Security Basics) (EDABAOAE)
Keywords
Where CodeSignal is headquartered
LocationHeadquarters
- HQ city
- San Francisco
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
CodeSignal business model
Business model- GTM type
- B2B and B2C
- Offering type
- Software
- Cost components
- Personnel, Technology or R&D, Marketing or Sales, Infrastructure, Operations
Revenue model
- Enterprise Skills Assessment Platform: B2B subscription-based revenue from企业提供技术招聘评估服务. Companies pay for access to technical assessments, AI interviewing tools, and hiring analytics. Revenue generated through annual or multi-year subscription contracts with enterprise customers.
- Enterprise Skills Development (Learn): B2B learning and development platform for corporate upskilling/reskilling. Organizations pay for academies, courses, and learning paths to train employees on technical and business skills.
- Consumer Learning App (Cosmo): B2C mobile learning application at $24.99/month or $149.99/year for individual learners. Targets the 76% of developers using or planning to use AI tools, offering micro-courses across technical and business domains.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Annual | Enterprise plans for hiring and learning - custom pricing based on organizational needs |
| Subscription | Monthly | Cosmo consumer learning app - standard monthly and annual subscription |
| Subscription | Annual | Startup and SMB plans - scaled hiring for smaller teams |
Go-to-market motion2 records
Distribution channels4 records
Marketing channels7 records
CodeSignal product offering
Product offeringCore offering
CodeSignal is an AI-native skills platform that provides technical and business skills assessments, AI-powered interviewing agents, live collaborative coding interviews, agentic coding evaluations for AI-era hiring, and a learning and development product (CodeSignal Learn) with an AI tutoring assistant (Cosmo). The platform serves enterprise customers for pre-hire assessment and workforce upskilling, and individual consumers through the Cosmo mobile app.
Product overview
CodeSignal is an AI-native skills platform offering a unified platform-plus-modules architecture that bridges technical hiring and workforce development. The core platform comprises four interconnected pillars: AI Interviewer (AI-powered interview agents), Skills Assessments (validated evaluation tools), Live Tech Interviews (collaborative IDE-based coding evaluation), and Skills Development (learning and upskilling). CodeSignal Learn extends the platform with over 300 micro-courses and AI tutoring via Cosmo for personalized skill development. The product portfolio serves the entire skills lifecycle—from pre-hire assessment through continuous employee development—with specialized solutions for technical hiring (Agentic Assessments, Technical Assessments), business hiring (AI Interviewer agents, Business Assessments), and corporate learning (Learn Academies, Technical/Business Courses). A partnership with Harvard Business Review Press provides practice-based learning content. The platform leverages AI throughout for agentic evaluation, real-time feedback, multilingual support, and fraud detection.
Differentiator
Problem solved
Functional benefit
Brands
- Cosmo: AI tutoring mobile application offering over 300 micro-courses across generative AI, coding, marketing, finance, and leadership, priced at $24.99 monthly or $149.99 annually.
Products and services
- AI Interviewer Standalone AI-powered interview platform with role-specific agents (Sales, Finance, Marketing, Accounting, Recruiter, BDR, Product) that adapt to candidates, ask deeper questions, and deliver objective structured results for consistent skills-based evaluation.
- Skills Assessments Validated, data-driven assessments that measure real-world skills to uncover strengths, opportunities, fit, and readiness for technical and business roles.
- Live Tech Interviews
- Skills Development Enterprise upskilling and reskilling platform empowering employees through hands-on practice, AI-powered feedback, and skill-based progress tracking for continuous growth.
- CodeSignal Learn Practice-based learning platform with 300+ micro-courses, AI tutoring via Cosmo, and an interactive IDE for personalized skill development across generative AI, coding, marketing, finance, and leadership.
- Cosmo Mobile AI Tutoring App Consumer-facing mobile AI tutoring application offering 300+ micro-courses across generative AI, coding, marketing, finance, and leadership, priced at $24.99 monthly or $149.99 annually for individual learners.
- Skills Intelligence Analytics and benchmarking platform leveraging millions of data points to reveal organizational skills landscapes, identify gaps, and shape workforce development strategies.
- Agentic Coding Assessments Industry-first technical hiring assessments evaluating candidates' ability to work effectively with AI agent tools such as Claude Code, Cursor, and Codex in real-world development scenarios.
- Cheating and Fraud Detection Proctoring and detection systems identifying plagiarism, proxy test-taking, and unauthorized AI use during assessments, with research showing proctored assessment fraud rates more than doubled in 2025.
Quantifiable outcome
- 91% of software engineers already use agentic AI coding tools at work, 73% believe non-adopters risk becoming less competitive within a year
- +3 more outcomes
Companies that use CodeSignal
Customer profileNamed customers13 records
Segments6 records
Ideal customer profiles6 records
CodeSignal technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
AI capability7 records
Feature7 records
CodeSignal partnerships and signals
Strategic signalPartnerships
Three partnerships are on record, tiered core and flagship.
- Transform Skills LabcoreCodeSignal-Transform Skills Lab partnership announced at Transform 2026 conference offering interactive learning paths. The partnership combines CodeSignal's skills validation platform with Transform's conference ecosystem for workforce education.
- Harvard Business Review PressflagshipStrategic partnership to create interactive, practice-based learning paths based on HBR Guides covering leadership, finance, and strategy. The partnership brings HBR's business content into CodeSignal's experiential learning platform, targeting professional development for enterprise learners.
- AWS (Amazon Web Services)coreCodeSignal's platform is built on AWS cloud infrastructure, a secure cloud services platform that complies with ISO 27001, SOC 1/SOC 2/SSAE 16/ISAE 3402 standards. AWS provides the foundation for CodeSignal's production operations and data centers.
Scale indicators7 records
Recent moves6 records
Expansion highlights6 records
CodeSignal competitors and assessment
Company assessmentDirect peers
- HackerRank: Direct competitor offering technical coding assessments, coding interviews, and skill certifications for enterprise hiring — the closest comparable to CodeSignal's core technical assessment business.
- Codility: Direct competitor providing technical skills assessments and coding tests for enterprise engineering recruiting, with overlapping enterprise buyer personas and similar IDE-based assessment format.
- TestGorilla: Direct competitor in the pre-employment skills assessment market, offering coding and cognitive assessments to enterprise and SMB customers — closely overlaps CodeSignal's SMB/startup tier and broader skills assessment portfolio.
- iMocha: Direct competitor providing AI-powered skills assessment and interviewing for IT, coding, and business roles, with comparable enterprise GTM motion and skills-validation positioning.
- HackerEarth: Direct competitor in technical recruiting assessments and developer assessment software, serving enterprise and SMB technical hiring — closely comparable in product and customer base.
- Mettl (Mercer Mettl): Direct competitor in online assessments including coding, psychometric, and AI interviewing — owned by Mercer/OLX, comparable in product breadth across technical and behavioral assessments.
Broad incumbents
- HireVue: Broader incumbent in video interviewing and AI-driven talent assessment (owned by HRTech private equity), competing with CodeSignal in structured interviewing and AI-powered evaluation but with a much wider HR-tech portfolio.
- Eightfold AI: Broader talent intelligence platform with skills assessment, internal mobility, and learning capabilities — overlapping with CodeSignal Skills Intelligence and Learn modules within a much larger enterprise HR suite.
- Degreed: Broader learning and upskilling platform comparable to CodeSignal Learn/Cosmo, used by enterprises for workforce development — an adjacent incumbent in the corporate learning segment rather than direct technical hiring competition.
Emerging players
- Filtered: Emerging AI-augmented hiring assessment platform focused on structured interviewing and skills validation — narrower scope than CodeSignal but emerging as an AI-first competitor in the same buyer workflows.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat6 records
Key risks5 records
Key highlights6 records
Customer concentration
CodeSignal social profiles
Digital presenceCodeSignal compliance and trust
Trust signalCompliance6 records
CodeSignal financial estimates
Financial estimateRevenue estimate
Valuation estimate
CodeSignal leadership team
Management profileNumber of profiles
Profiles2 records
CodeSignal funding detail
Funding detailFunding overview
Funding rounds4 records
Investors21 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
CodeSignal M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about CodeSignal
What does CodeSignal do?
CodeSignal is an AI-native skills platform that provides technical and business skills assessments, AI-powered interviewing agents, live collaborative coding interviews, agentic coding evaluations for AI-era hiring, and a learning and development product (CodeSignal Learn) with an AI tutoring assistant (Cosmo). The platform serves enterprise customers for pre-hire assessment and workforce upskilling, and individual consumers through the Cosmo mobile app.
Is CodeSignal a public or private company?
CodeSignal is a private company. It is classified as venture growth investor backed and is currently operating.
When was CodeSignal founded?
CodeSignal was founded in 2015. It employs 101 to 250 people.
Where is CodeSignal based?
CodeSignal is headquartered in San Francisco, United States, in the North America region.
How does CodeSignal make money?
Three revenue lines are on record. Enterprise Skills Assessment Platform is the primary driver. The others are enterprise Skills Development (Learn) and consumer Learning App (Cosmo).
Who are CodeSignal's main competitors?
Direct peers on record are HackerRank, Codility, TestGorilla, iMocha, HackerEarth and Mettl (Mercer Mettl). Broad incumbents are HireVue, Eightfold AI and Degreed. Filtered is listed as an emerging player.
Does CodeSignal have an API?
Yes. CodeSignal offers a public API accessible via developer.codesignal.com for developers to build or automate integrations with the platform. Specific API types (REST, GraphQL), authentication methods, rate limits, and versioning details are not specified in the available source content. Developer documentation is at developer.codesignal.com.
What industry is CodeSignal in?
CodeSignal's product category is Technical Skills Assessment Platform. Its primary akta.pro industry code is EDAFANAA, Coding & Programming Learning Platforms, with a secondary code of EDAGAKAD, eLearning & Microlearning Module Development. Its NAICS code is 611420 and its SIC code is 7372.