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Onwelo Tech Stack

Polish IT services firm building automation, cloud infrastructure, and LLM-powered document processing

IT Services and IT Consulting Warszawa 501–1,000 employees Founded 2015 Privately Held

Onwelo is a 700-person services firm based in Warsaw with offices across Poland, Germany, Switzerland, and the US. The tech stack reveals a company pivoting toward AI and automation: GPT-4, Llama, Claude, and LangChain appear alongside document-processing tools (Pinecone, Qdrant, FAISS), while core infrastructure runs on .NET, Java, Azure, and AWS with Kubernetes orchestration. The hiring velocity (22 roles posted in the last month) is accelerating in engineering and data, matching active projects in LLM-RAG integration, document classification pipelines, and CI/CD infrastructure — signaling a shift from pure services delivery toward productized automation solutions.

Tech Stack 117 technologies

Core Stack.NET Angular Python Hugging Face LangChain AWS Elasticsearch Pinecone Kubernetes Docker Terraform GitLab Jenkins Maven Java Ansible SIEM SOAR EDR Azure GPT-4 Llama Claude Gemini LlamaIndex GCP FAISS Milvus Qdrant Gerrit+80 more

ReplacingTableau Qlik SAP ECC

What Onwelo Is Building

◆Challenges

Automating processes
Optimizing production processes
Ensuring availability and security
Optimizing infrastructure costs
Scaling soc operations
Ensuring quality of developed systems
Integrating with mes/scada
Automating document analysis
Automating document classification
Automating document extraction

▲Active Projects

Ci/cd infrastructure development
Process automation
Digitalization of automotive production processes
International backend services development
Document classification pipeline
Llm-rag integration
Iot and mes/scada integration
Production environment reliability
Power platform solution development
Insurance data warehouse automation

Hiring Activity

Accelerating40 roles · 20 in 30d

Department

Engineering

26

Data

8

Finance

1

Manufacturing

1

Security

1

Seniority

Mid

20

Senior

13

Manager

2

Junior

1

Lead

1

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About Onwelo

Onwelo delivers IT services across software development, testing, infrastructure management, and data analytics to mid-market and enterprise clients in Europe and North America. The firm has completed over 300 projects since 2015. Core service lines include business analysis, cloud migration (Azure, AWS, GCP), backend services development, and increasingly, intelligent automation — document processing, IoT integration, and production digitalization for manufacturing and insurance verticals. The organization is structured around engineering-heavy delivery (26 open engineering roles) with growing data capabilities (8 roles), supported by CI/CD, containerization (Docker, Kubernetes), and infrastructure-as-code practices (Terraform, Ansible).

HeadquartersWarszawa

Company Size501–1,000 employees

Founded2015

Hiring MarketsPoland

Frequently Asked Questions

What tech stack does Onwelo use?

Core: .NET, Java, Python, Angular; Cloud: Azure, AWS, GCP; Data/AI: GPT-4, Llama, Claude, Gemini, LangChain, Hugging Face, Pinecone, Qdrant, FAISS; Infrastructure: Kubernetes, Docker, Terraform, Ansible; CI/CD: Jenkins, GitLab, Gerrit, Maven; Security: SIEM, SOAR, EDR; Analytics: Elasticsearch.

What is Onwelo working on?

LLM-RAG integration, document classification and extraction automation, CI/CD infrastructure development, IoT and MES/SCADA integration, automotive production digitalization, power platform solutions, and insurance data warehouse automation.