Senior ETL Developer

About Altimi

Altimi is a technology acceleration partner with impressive experience spanning over 20 years, specializing in the successful delivery of software development projects for international customers. We are based in Poland. Our main area of operation is the DACH region and Scandinavia, where we are known for providing top-notch software development services.

Our primary focus are managed services for companies seeking to accelerate growth, solve complex tech problems, build MVP/POC and/or modify legacy infrastructures.

The main area of competence include Product & Application Engineering, DevOps, Cloud Security & Managed Services and AI & Data Enablement.

Role Overview

The Senior Developer is responsible for designing, implementing, and optimizing complex ETL processes in Talend while ensuring high data quality across distributed pipelines. This role requires strong analytical skills to independently investigate data issues, perform advanced validations, and derive technical recommendations. Additionally, the Senior Developer collaborates closely with MDM/DWH teams and supports DevOps tasks when needed, bringing broader expertise in APIs, DevOps, and cloud.

Responsibilities

End-to-end implementation & optimization of ETL processes in Talend 8,
data modeling, SQL, complex DBScripts (PostgreSQL),
data analysis skills (several years of experience) & improvement of data quality.
The Developer must have several years of practical experience in data analysis. We need someone who has the ability to independently investigate complex data relationships, identify sources of error in ETL processes, and derive data-driven recommendations. Furthermore, the ETL Developer must be able to perform complex data validations using defined and ad-hoc test data. This includes creating and applying data quality rules, analyzing data anomalies, edge cases, and error patterns, as well as deriving concrete technical measures. The role requires in-depth expertise that goes significantly beyond pure ETL know-how.
Close collaboration with MDM/Data Warehouse teams.
Technical sparring and architectural input.
Support for DevOps Engineer as needed

Requirements

Excellent knowledge of ETL/Talend.
Excellent SQL and database skills.
Understanding of interfaces, data processing, logging, and monitoring.
Experience working with distributed data pipelines.
Particularly careful handling of data due to the high project complexity.
Strong comprehension and creativity for proactive and pragmatic problem-solving in the context of data products.
High understanding of data complexity.
Proactive approach.

What’s in it for you?

Join for a role, stay for the development: More than 40% of our team is working with us longer than 5 years. Explore diverse domains, projects and modern technologies through internal mobility.
Learn from the best: Almost 60% of all our colleague has over 10 years of professional experience.
Flexibility: Work fully remotely, full-time from our office in Wroclaw or in a hybrid model.
Practical benefits: private medical care, life insurance, sport card, English and German classes in small, online groups.