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Cleartech Tech Stack

Telecom software and number portability processing for Brazilian carriers

IT Services and IT Consulting Barueri, São Paulo 51–200 employees Founded 1999 Privately Held

Cleartech operates in Brazilian telecommunications with a focus on number-portability solutions and billing validation — a mission-critical, high-volume processing domain. The tech stack (Java/Spring, PostgreSQL/MongoDB, Terraform/CloudFormation, Prometheus/Grafana) shows a mature ops-first infrastructure approach, while the pain-point concentration (data quality, incident reduction, KPI monitoring, compliance) reveals internal challenges around observability and process control rather than raw engineering capacity.

Tech Stack 36 technologies

Core StackAWS Linux Terraform CloudFormation Prometheus Grafana PostgreSQL MongoDB Java Spring Maven RabbitMQ Python Postman AWS CloudWatch Windows SQL UML ITIL JSP Git AWS EKS UNIX Microsoft Project WhatsApp Excel PowerPoint Bash Spring Boot Spring MVC+5 more

What Cleartech Is Building

◆Challenges

Managing complex high-risk projects
Improving quality and scalability
Elevating data quality standards
Robust data acquisition processes
Advanced analytics support
Reducing recurring incidents
Identifying failure patterns
Inefficient debt collection operations
Lack of kpi monitoring
Process compliance adherence

▲Active Projects

New portfolio implementation
Go-live support

Hiring Activity

Steady15 roles · 4 in 30d

Department

Engineering

5

Support

4

Data

1

Ops

1

Sales

1

Seniority

Senior

6

Junior

4

Intern

1

Mid

1

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About Cleartech

Cleartech builds telecom solutions for Brazilian carriers, with deep expertise in number-portability processing—a heavily regulated, high-throughput operation where the company ranks among the world's largest by processing volume. The product surfaces include ASP-model SaaS delivery and custom development. Founded in 1999, Cleartech has operated continuously in telecom infrastructure for over two decades, with a 51–200-person team based in Barueri, São Paulo. Current hiring activity spans engineering, support, data, and operations, with a senior-skewed seniority mix suggesting a focus on project stability and risk management rather than rapid scaling.

HeadquartersBarueri, São Paulo

Company Size51–200 employees

Founded1999

Hiring MarketsBrazil

Frequently Asked Questions

What tech stack does Cleartech use?

Java, Spring, PostgreSQL, MongoDB, AWS (EKS, CloudFormation, CloudWatch), Terraform, Prometheus, Grafana, RabbitMQ, Git, Maven. Development tools include UML, Postman; operational frameworks include ITIL.

What is Cleartech working on?

Active projects include new portfolio implementation and go-live support. Pain points center on managing high-risk projects, improving data quality, reducing incidents, and strengthening KPI monitoring and compliance adherence.