Closer Consulting Tech Stack

Data science and BI consulting with cloud migration and AI capabilities

IT Services and IT Consulting Lisbon 201–500 employees Founded 2006 Privately Held

Closer is a data science consulting firm built around Python, R, and modern ML frameworks (TensorFlow, PyTorch, LLaMA, Mistral), now adopting RAG and shifting infrastructure toward Databricks and cloud-native tooling while phasing out Oracle and legacy .NET Framework — a pattern consistent with moving clients from batch BI to real-time AI-augmented analytics. The engineering-heavy hiring mix (34 engineers, 13 data specialists) and active projects spanning Power BI dashboards, secure LLM services, and observability suggest a push to help clients modernize legacy systems and embed AI into existing business intelligence workflows.

Tech Stack 200 technologies

Core StackPython TensorFlow PyTorch Azure Data Factory SQL Server Databricks Azure DevOps PySpark Power BI Vue Java Docker Kubernetes Hibernate R Keras Caffe LLaMA Mistral SQL Server Integration Services Azure Synapse Pipelines Azure SQL Database Data Lake Azure Synapse Analytics SQL Server Reporting Services Git SQL GCP JSF Spring Boot+164 more

AdoptingRAG Terraform GitHub .NET Databricks Bicep

ReplacingOracle .NET Framework

What Closer Consulting Is Building

◆Challenges

Modernizing legacy applications
Migrating legacy applications to cloud
Improving business applications
Stability of critical systems
Data accuracy in critical systems
Legacy application maintenance
Streamlining developer workflows
Improving service reliability
Embedding observability and security
Optimizing etl processes

▲Active Projects

Application enhancement projects
Power bi data provisioning
Quarterly regional reporting
Executive presentation development
Wealth management data visualization project
Asset management dashboard project
Internal developer platform
Global portfolio monitoring
Secure gpt internal service
Observability improvement

Hiring Activity

Accelerating55 roles · 35 in 30d

Department

Engineering

Data

Ops

Security

Support

Seniority

Mid

Senior

Manager

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About Closer Consulting

Closer is a data science and business intelligence consulting firm headquartered in Lisbon, operating since 2006 with 201–500 employees. The firm serves clients across financial services, telecom, retail, and contact centers, combining domain expertise with multidisciplinary teams of data scientists, engineers, and mathematicians. Service lines include advanced analytics, data engineering, business intelligence dashboarding, and AI implementation. The company operates a nearshore model with hiring in Portugal and the United States, positioning itself for both regional European work and North American client engagement.

HeadquartersLisbon

Company Size201–500 employees

Founded2006

Hiring MarketsPortugal, United States

Frequently Asked Questions

What tech stack does Closer Consulting use?

Core languages: Python, R, Java. ML frameworks: TensorFlow, PyTorch, Keras, LLaMA, Mistral. Data platforms: Azure Synapse Analytics, Databricks, SQL Server, Azure SQL Database. BI tools: Power BI, SQL Server Reporting Services. Infrastructure: Azure, GCP, Docker, Kubernetes, Git, Azure DevOps.

What is Closer Consulting working on?

Active projects include Power BI data provisioning, wealth management and asset management dashboards, executive reporting, internal developer platforms, global portfolio monitoring, secure GPT services, and observability improvements — reflecting a focus on modernizing legacy BI and embedding AI into client systems.