Database Expert

Nordea; Warszawa; Hybrid; PLN 180,000 - 280,000; Full time

Benefits offered by this job

Hybrid working model

Diversity and inclusion programs

Career development opportunities

Job summary

Nordea in Warsaw is seeking a Database Expert to design and document trusted data foundations across modern data platforms. You will shape data architecture, data models, and integration patterns for trusted data.

You will collaborate with data scientists, engineers, and business teams to ensure data quality, governance, and secure data flows across ETL processes using technologies like Snowflake, Kafka, Hadoop, Spark.

Qualifications

• Solid experience in data architecture and design, data modelling and data warehousing.
• Strong understanding of ETL processes and data integration patterns.
• Proficiency in SQL and NoSQL database design and management.
• Experience with Snowflake, Hadoop, Spark and Kafka ecosystems.
• Knowledge of data governance, data quality and CI/CD concepts.

Responsibilities

• Design efficient database schemas and data models, with data dictionaries and documentation.
• Improve database reliability, performance, security, backup and recovery strategies.
• Create data ingestion, transformation and quality-control patterns across multiple sources.
• Support system integration with event-driven patterns and message queues.
• Plan work packages, timelines and technical roadmaps for data infrastructure.

Skills

Data architecture

Data modelling

Data warehousing

ETL processes

SQL

NoSQL

Snowflake

Kafka

Hadoop

Spark

Data governance

CI/CD

Documentation

Tools

DataStage

Informatica

Snowflake ETL

Hadoop

Spark

Kafka

Job description

Job ID: 6047 Welcome to Group Technology, where we pride ourselves on engineering solutions and directing Nordea’s transformation by providing a holistic technological view and a structured understanding of the bank and its surrounding environment. We are looking for a Database Expert to help design, document and improve trusted data foundations across modern data platforms and integrated systems. This role is offered as a full-time employment agreement.

Job ID: 6047 Welcome to Group Technology, where we pride ourselves on engineering solutions and directing Nordea’s transformation by providing a holistic technological view and a structured understanding of the bank and its surrounding environment. We are looking for a Database Expert to help design, document and improve trusted data foundations across modern data platforms and integrated systems. This role is offered as a full-time employment agreement. Nordea is a place where traditions meet tomorrow. We are not just a bank, we are a tech employer on a mission to evolve finance securely and responsibly. Together, we impact millions of people’s daily lives by ensuring they can access our solutions anytime, anywhere, while safeguarding their personal data and wealth. Join us in making an impact on the banking industry.

About Our Team

Meet the Credit Desicion Data Store team. Our role is to build reliable source of truth for credit assessment data that can be further used operationally and analytically in the Bank

Collaboration. Ownership. Passion. Courage. These are the values that guide us in how we work and how we make decisions – and that we imagine you share with us.

Main responsibilities in this role:

• Design efficient database schemas, business-aligned data models, data dictionaries and technical documentation covering integration points and data flows.
• Improve database reliability, performance and security by proposing optimization techniques, validation rules, access controls, backup and recovery approaches, and error handling mechanisms.
• Design data ingestion, transformation and quality-control patterns that standardize, clean and validate data from multiple sources, including automated workflows for recurring processing.
• Support integration across systems by designing message queues and event-driven patterns, ensuring data consistency, troubleshooting synchronization issues and collaborating with internal and external teams.
• Shape data initiatives into manageable work packages by estimating effort, defining timelines and helping set the technical roadmap for data infrastructure.

Who You Are

• Tthink systematically about data flows and can translate complex technical topics into clear explanations for non-technical stakeholders.
• Enjoy collaborating with data scientists, analysts, engineers, business teams and external partners to agree pragmatic integration and data-management solutions.
• Have a problem-solving mindset, strong attention to detail and the adaptability to learn new technologies, tools and approaches.
• Are comfortable facilitating knowledge sharing, documenting decisions and helping teams reduce technical debt over time.

Your background and skills include:

• Solid experience in data architecture and design, data modelling, data warehousing solutions and data integration patterns.
• Proficiency in database design and management across SQL and NoSQL technologies, including schema design, constraints, stored procedures, functions and triggers.
• Strong understanding of ETL processes and tools such as DataStage, Informatica and Snowflake ETL, plus familiarity with big data technologies such as Hadoop and Spark and Kafka event streaming.
• Proficiency in UML, especially ERD, sequence and component diagrams, together with an understanding of BPMN and end-to-end process thinking.
• Good working knowledge of data governance principles, data quality practices, performance optimization, debugging/troubleshooting and CI/CD pipeline concepts.

It would be ideal if you also:

• Have hands-on experience documenting complex data flows, integration landscapes and data dictionaries in regulated environments.
• Have designed event-driven or queue-based integration patterns and helped define operational recovery mechanisms for critical data processes.
• Can support communities of practice through knowledge-sharing sessions, architecture guidance and reusable documentation standards.

What We Offer

People come here when they want to get somewhere. For some, it’s to take their career to the next level. For others, it’s to break new ground within their area of expertise – in other words, with us, you will always move forward.

A culture that fosters performance and growth in one of the largest Nordic banks, offering various opportunities to evolve, develop and learn from brilliant colleagues with diverse backgrounds in a vibrant working environment.

Hybrid working model – we believe in the value of bringing people together and at the same time we embrace the freedom of flexibility.

Diversity and inclusion are a natural part of our daily work. We know that an inclusive workplace is a sustainable one. We genuinely believe that our diverse backgrounds, experiences, characteristics and traits make us stronger together. Every day we strive to find new ways to improve diversity and inclusion within our community e.g. we have signed the European Diversity Charters in the countries where we operate to show our commitment and engage with others to continue learning and improving.

We reserve the right to reply only to selected applications.

In accordance with art. 6 (1) a and b. Regulation (EU) 2016/679 of the European Parliament and of the Council of 27 April 2016 on the protection of natural persons with regard to the processing of personal data and on the free movement of such data, and repealing Directive 95/46/EC (General Data Protection Regulation) hereinafter ‘GDPR’. I agree to have: my personal data, education and employment history proceeded for the purposes of current and future recruitment processes in Nordea Bank Abp.

The administrator of your personal data is: Nordea Bank Abp operating in Poland through its Branch, address: Aleja Edwarda Rydza Śmiglego 20, 93-281 Łodź. Your personal data will be processed for the recruitment processes in Nordea Bank Abp. You have a right to access your personal data, right to rectify and right to delete. Disclosing the personal data in the scope specified by the provisions of Polish Labour Code from 26 June 1974 and executive acts are mandatory. Providing personal data is necessary to conduct the recruitment processes. The request for the deletion of your personal data means resignation from further participation in recruitment processes and causes the immediate removal of your application. Detailed information concerning processing of your personal data can be found at: https://www.nordea.com/en/doc/nordea-privacy-policy-for-applicants.pdf