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Telesign Tech Stack

Identity verification and communications platform processing billions of phone numbers monthly

IT Services and IT Consulting Marina del Rey, CA 501–1,000 employees Founded 2005 Privately Held

Telesign verifies over five billion unique phone numbers monthly across a stack built on AWS, Azure, and GCP with heavy data processing (Databricks, Spark, SageMaker). The hiring mix skews engineering and data (14 roles combined) with a lakehouse architecture evolution underway, suggesting an internal shift toward unified data platforms while handling scale challenges around fraud detection and operational health.

Tech Stack 102 technologies

Core StackAWS Python Scala Databricks Apache Spark AWS Lambda AWS Glue SageMaker Cassandra SQL Server DynamoDB CloudWatch Elasticsearch Docker Linux Active Directory HTTP 4G LTE Azure GCP R Kinesis API Gateway Git REST API SQL Windows macOS Microsoft 365 Global Protect+72 more

What Telesign Is Building

◆Challenges

Balancing third-party vendor solutions
Preventing fraud and abuse
Integrating new mobile core solutions
Ensuring operational health
Scaling data platform
Automating infrastructure
Increasing upsell opportunities
Improving customer satisfaction
Enhancing data accuracy
Technology assessment challenge

▲Active Projects

Api suite for millions of users
Scalable distributed data processing systems
Data-intensive solutions for customer offerings
Framework for deploying data science solutions
Sim for things value stream
Implement monitoring and alerting solutions
Technical platform development roadmap
Highly available 24/7 cloud services
Lakehouse architecture evolution on aws
Platform upgrades and migrations

Hiring Activity

Steady30 roles · 10 in 30d

Department

Engineering

9

Data

5

Ops

4

Finance

2

Sales

2

Support

2

HR

1

Legal

1

Seniority

Mid

14

Senior

9

Junior

4

Director

1

Notable leadership hires: Sales Director

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About Telesign

Telesign provides identity verification and communications infrastructure for enterprises managing account security, fraud prevention, and SMS/voice authentication. The company operates as part of the Proximus Group and processes identity signals across half the world's mobile users monthly. The platform combines machine learning, extensive data science, and global reach to deliver fraud-risk recommendations and secure communications at scale. Telesign sells primarily to mid-market and enterprise customers requiring continuous identity trust across digital channels.

HeadquartersMarina del Rey, CA

Company Size501–1,000 employees

Founded2005

Hiring MarketsSerbia, Colombia, Singapore, Malaysia

Frequently Asked Questions

What tech stack does Telesign use?

Telesign operates on AWS, Azure, and GCP with Python, Scala, and R for analytics. Core infrastructure includes Databricks, Apache Spark, SageMaker, Cassandra, DynamoDB, and Elasticsearch for data processing and identity risk modeling.

What is Telesign working on?

Current projects include an API suite for millions of users, scalable distributed data processing systems, lakehouse architecture evolution on AWS, framework for deploying data science solutions, and infrastructure monitoring and alerting solutions.