Talend Developer

Talend Developer (6 Years experience)

Upgrading Talend from 7.x to 8.0.1 involves not just infrastructure changes, but also

project-level upgrades that require Talend Developers to adapt, refactor, and validate

their ETL jobs. Below is a detailed overview of the skills, roles, and responsibilities of

Talend Developers during this upgrade process:

Key Skills for Talend Developers (Upgrade 7.3 8.x)

1. Talend Studio Expertise

• Proficiency in Talend Studio for Data Integration/Big Data/ESB (based on

edition).

• Familiarity with job designs, components, contexts, routines, and metadata

repositories.

• Knowledge of repository-based project management and shared resources.

2. Component Compatibility and Migration

• Understanding of changes to components and deprecated features in 8.x.

• Ability to replace deprecated components with newer alternatives.

• Experience in upgrading custom routines, tJava code blocks, and external

JARs.

• Experience with Git, SVN, or TAC integrated version control.

• Knowledge of the Talend CommandLine (CI Builder) for automated builds in

8.x.

5. Testing and Validation

• Expertise in unit testing, job-level validation.

• Skill in comparing job outputs and logs across 7.x and 8.x.

• Debugging and resolving issues caused by API, database driver, or job engine

changes.

6. Database and API Knowledge

• SQL scripting for data validation and comparison.

• Understanding of any REST/SOAP API calls used in jobs.

• Familiarity with data quality, data cleansing, and transformation logic.

Roles and Responsibilities of Talend Developers

Pre-Upgrade Assessment

• Review existing jobs for usage of deprecated or risky components.

• Tag jobs that need refactoring or heavy testing.

• Export and back up project sources from Talend Studio 7.x.

Project Upgrade Execution

• Open and migrate projects using Talend Studio 8.x.

• Resolve upgrade errors and component mapping warnings.

• Replace or reconfigure any unsupported or changed features.

Post-Upgrade Job Testing

• Performance testing to ensure job outputs remain accurate.

• Compare run times and log outputs for performance or logic issues.

• Validate dependencies (e.g., database connectors, external services).

Documentation and Collaboration

• Document all changes made to migrated jobs.

• Work with admins to troubleshoot TAC scheduling or job execution issues.

• Communicate with QA and data teams for test case validation.

• Implement reusable jobs and promote modular design using best practices.

• Recommend improvements in job design and monitoring post-upgrade.