> Markdown version of [/jobs/ext/4642078-ibm-i-as400-dba-db2-cobol-performance-expert](https://www.wearedevelopers.com/jobs/ext/4642078-ibm-i-as400-dba-db2-cobol-performance-expert). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# IBM i / AS400 DBA - DB2, COBOL & Performance Expert

- **Company:** Tieto Corp.
- **Location:** Madrid, Spain
- **Contract:** Permanent contract
- **Skills:** Os/400 Operating System, IBM System I, COBOL (Programming Language), Databases, Data Architecture, IBM DB2, Performance Monitor
- **Published:** November 9, 2026
- **Apply:** https://www.jobleads.com/es/job/ibm-i-as400-dba-db2-cobol-performance-expert--madrid--eb4e957776b23f2d9672e02e13d95c745

## About the Role

The role requires strong problem-solving, documentation, and experience with data migrations, masking, and change control using tools like PTC/MKS. Excellent communication skills are a must.

## Description

Tieto Corp. in Madrid seeks a Database Administrator with IBM i / OS400 experience to join our IT team. You will administer DB2 databases, monitor performance, back up data, and collaborate with developers to optimize data architectures.

The role requires strong problem-solving, documentation, and experience with data migrations, masking, and change control using tools like PTC/MKS. Excellent communication skills are a must.