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Hello, I am Maciek

Maciej Szwalgin

Senior Data Engineer / Data Architect / Data Product Owner / Agile Geek and owner at NOBS-IT

Team Leader and Senior Data Engineer with 20 years of experience in the area of analysis, design, and development of software.

I have DevOps and Agile mindset. I appreciate people who are: open, honest, and transparent. I am a person who can work individually and in a team, but the most important value is responsibility and ownership for the effects of my and my teamwork. I have a creative mindset, I always try to share my ideas with others and listen to others to choose the best approach and solution.

My leadership mottos:

  • With good people you can move mountains – people are the most important
  • Good leaders help people to grow – they should be better than a leader

Other Mottos:

  • DevOps should not be a job title - it is mindset :-)
  • Agile is more than a method - it’s a mindset ;-)

Leadership
Accountability
Team Player
Passion
Flexibility
Creativity

Skills

Oracle Database
Oracle Database

OCP certified. Expert in Oracle DB (up to 147TB), performance tuning (20h to 2h), DWH, data modeling, administration (OCA DBA), and problem-solving.

PostgreSQL
PostgreSQL

Expert in PostgreSQL databases, providing robust solutions and optimizations, particularly within the Silent Eight AML platform.

SQL
SQL

Extensive experience across various DBs. Oracle SQL Certified Expert. Trainer for SQL for beginners.

PL/SQL
PL/SQL

OCP certified. 15+ years developing, optimizing (20h->2h), and maintaining complex PL/SQL code for DWH, ETL, and core banking.

Data Warehousing (DWH)
Data Warehousing (DWH)

15+ years designing, developing, optimizing DWH solutions (incl. Data Vault 2.0), ETLs, and reporting marts across multiple countries.

ETL Development
ETL Development

Developed complex ETL processes using PL/SQL, IBM DataStage, Alteryx, Spark, and Python for DWH, regulatory reporting, and data integration.

Data Modeling
Data Modeling

Extensive experience in data modeling for DWH (incl. Data Vault 2.0) and transactional systems across multiple large projects.

Data Vault 2.0
Data Vault 2.0

Trained in Data Vault 2.0 methodology for modern data warehousing.

Python
Python

Used for automation, ETL (Pandas, Spark, Polars, NumPy), AI/LLM exploration, management reporting, and developing internal tools.

Shell Scripting (Bash)
Shell Scripting (Bash)

Proficient in writing bash/shell scripts for automation and system tasks in Linux environments.

Jira
Jira

Expert Jira Administrator and user. Implemented Jira, managed workflows, created migration tools, used for time tracking and project management. Trainer.

Confluence
Confluence

Expert Confluence Administrator and Content Manager. Implemented knowledge bases and company intranet. Trainer.

React
React

Developed common UI components using React, Tailwind, Shadcn/UI, and TypeScript.

JavaScript
JavaScript

Used alongside React and TypeScript for front-end development.

TypeScript
TypeScript

Used with React for developing type-safe front-end components.

Tailwind CSS
Tailwind CSS

Used Tailwind CSS for styling React components.

Shadcn/UI
Shadcn/UI

Utilized Shadcn/UI component library with React and Tailwind.

Vite
Vite

Used for building React applications.

Git
Git

Experienced with git-based development (GitHub, GitLab). Migrated repositories from SVN, created standards.

Docker
Docker

Experience deploying and managing containerized applications.

Kubernetes
Kubernetes

Experience deploying and managing applications on Kubernetes (incl. AWS EKS). Used for management reporting ETL.

AWS (Amazon Web Services)
AWS (Amazon Web Services)

Experience with AWS services, particularly EKS for Kubernetes deployments and infrastructure for reporting platforms.

Helm
Helm

Used for packaging and managing Kubernetes applications.

Argo CD
Argo CD

Experience with GitOps principles using Argo CD for continuous delivery on Kubernetes.

Jenkins
Jenkins

Used for building CI/CD pipelines.

CI/CD

Designed and implemented CI/CD pipelines and standards (Jenkins, GitLab, Git-based workflows) across data warehouse and application development projects.

Linux
Linux

Proficient in using Linux environments for development and deployment.

Lens (Kubernetes IDE)
Lens (Kubernetes IDE)

Used as an IDE for managing and visualizing Kubernetes clusters.

IBM DataStage
IBM DataStage

Used DataStage for complex ETL development in regulatory reporting and DWH projects. Developed custom Java components for it.

Apache Spark
Apache Spark

Used Spark (via Python) for ETL processes and data manipulation in management reporting.

PySpark
PySpark

Python API for Apache Spark, used for distributed data processing and ETL in Databricks and management reporting pipelines.

Power BI
Power BI

Developed reports and dashboards using Power BI. Led BI developers.

Apache Superset
Apache Superset

Implemented and managed Superset for business intelligence and management reporting.

Agile Methodologies (Scrum/Kanban)
Agile Methodologies (Scrum/Kanban)

Agile Geek. PSM I certified. Implemented Scrum/Kanban, coached teams and Product Owners, acted as Scrum Master and Agile Coach.

Product Management / Ownership
Product Management / Ownership

Acted as Product Owner, responsible for product vision, roadmap, backlog prioritization, and delivery. Trained other POs.

SDLC Implementation & Management
SDLC Implementation & Management

Designed, implemented, and managed the full Software Development Life Cycle (SDLC) across an organization, supporting SOC2 certification.

Project Management
Project Management

Experience managing projects, timelines, budgets (2M+ EUR), and resources, particularly in Agile environments.

Team Leadership & Management
Team Leadership & Management

Led teams up to 21 people. Focused on servant leadership, team building, hiring (32+), and fostering growth.

Risk Management
Risk Management

Experience identifying and managing project and operational risks. Trained in Risk Management.

Business Analysis
Business Analysis

Certified Business Analyst (George Washington University). Experience in requirements gathering, process modeling, and use case modeling.

Knowledge Management
Knowledge Management

Initiated and implemented knowledge management systems using Confluence and Jira. Managed company documentation and intranet.

Software Design Principles
Software Design Principles

Adherence to SOLID, KISS, DRY principles for writing maintainable and scalable code.

Cursor
Cursor

Cursor is a powerful AI-powered coding assistant that helps developers write code faster and more efficiently. It offers code completion, code explanations, and code generation capabilities, making it an invaluable tool for developers of all levels.

Artificial Intelligence (AI) & LLMs
Artificial Intelligence (AI) & LLMs

Explored and applied AI/LLMs (ChatGPT, Anthropic, Gemini, Ollama) for process automation, reporting, and agent development (Dify). Hobbyist and enthusiast.

TensorFlow
TensorFlow

Explored TensorFlow as part of AI/ML learning (Google ML Crash Course).

Ollama
Ollama

Used for running and experimenting with local Large Language Models (LLMs).

Dify.ai
Dify.ai

Developed AI Agents using the Dify platform for process automation.

Test-Driven Development (TDD/ATDD/BDD)
Test-Driven Development (TDD/ATDD/BDD)

Familiar with and applied various test-driven development methodologies. Experience with Test Automation.

Scaled Agile Framework (SAFe)
Scaled Agile Framework (SAFe)

Certified SAFe 4 Agilist. Experience with large-scale agile frameworks.

TOGAF
TOGAF

TOGAF 9 Foundation certified. Understanding of enterprise architecture frameworks.

ITIL
ITIL

ITIL Foundation certified. Knowledge of IT service management best practices.

Java
Java

Java SE 8 Programmer certified. Developed custom components (e.g., for DataStage, Jira migration tool using REST). Familiar with Spring, Java EE, JSF, EJB.

C#
C#

Used C# for Test Automation development with HP ALM/UFT.

Alteryx
Alteryx

Utilized Alteryx for ETL development as part of a broader data engineering toolkit.

QlikView / QlikSense
QlikView / QlikSense

Experience leading teams using QlikView/QlikSense for BI development.

Oracle BI (OBIEE/Publisher)
Oracle BI (OBIEE/Publisher)

Led teams using OBIEE. Trained in Oracle BI Publisher and Discoverer.

Test Automation (HP ALM/UFT)
Test Automation (HP ALM/UFT)

Developed automated tests using HP ALM and UFT with C#.

T24 (Temenos)
T24 (Temenos)

Experience extracting data from and integrating with the T24 Core Banking System.

Databricks
Databricks

Databricks Academy certified across Data Engineering, Lakeflow, Unity Catalog, and Performance Optimization. Used for the Data Platform and Lakehouse migration at Limango.

Terraform
Terraform

Infrastructure as Code tool used for provisioning and managing cloud infrastructure.

Claude
Claude

Anthropic’s AI assistant, used for coding assistance, process automation, and exploring AI/LLM applications alongside ChatGPT and Gemini.

GitHub Copilot
GitHub Copilot

AI pair-programming assistant used for code completion, suggestions, and accelerating development workflows.

Gemini
Gemini

Google’s AI model family, used for process automation, reporting, and AI/LLM exploration alongside ChatGPT and Claude.

n8n
n8n

Workflow automation platform used for building automated processes and connecting tools and AI agents.

Experiences

1
Avarda Bank

2026-07 - Present

Gdańsk, Poland (Hybrid)

Avarda is a Nordic payment solutions provider empowering e-commerce merchants with seamless, fully-branded checkout experiences across cards, digital wallets, and buy-now-pay-later options.

DATA PLATFORM LEAD

2026-07 - Present

Responsibilities:
  • Responsibilities will appear soon
Limango Polska sp. z o.o.

2025-05 - 2026-06

Wrocław, Poland (Remote)

Limango Polska sp. z o.o. is a remote-first tech and operations hub for the Limango Group, a leading European e-commerce platform focused on family and lifestyle products.

SENIOR DATA PRODUCT OWNER

2025-05 - 2026-06

Responsibilities:
  • Product Owner of Data Platform - Build Data Product Vision, roadmap, product delivery, and execution, risk management.
  • Collaborated with 15+ business stakeholders to align data initiatives with company objectives.
  • Data Governance implementation in the Data Area.
  • Initiated and developed the Data Domain Area, integrating a centralized Data Lakehouse as the single source of truth for reporting and machine learning use cases.
  • Data Engineer for small internal projects (automate Databricks metadata, Jira reporting in Databricks).
  • Served as JIRA and Confluence Administrator, managing system configurations and providing expert-level support and solutions.
  • Acted as Scrum Master, facilitating agile development practices and continuous team improvement.
2
3
Silent Eight Pte. Lte.

2022-02 - 2025-04

Singapore (Remote)

AI Financial Crime Compliance Partner Empowering you to identify and manage AML risks with speed, efficiency, and unparalleled precision.

DATA ARCHITECT - PRODUCT OWNER - DEVELOPMENT TECH LEAD

2022-02 - 2025-04

Responsibilities:
  • Product Owner of Risk Data Management in AML Platform - Build Product Vision, roadmap, and product delivery and execution.
  • Developed and implemented the Software Development Life Cycle (SDLC) for the entire company, covering the full spectrum from planning, requirements gathering, development, and release of applications to client-side implementation and ongoing maintenance and support.
  • Helped company to get SOC2 Certification
  • Acted as an Agile Coach in the company’s transformation, leading the implementation of agile development practices.
  • Conducted Product Owner training sessions for fellow Product Owners across the company, enhancing cross-team alignment and promoting best practices in agile product management.
  • Built and managed a management reporting system, including Superset implementation (open source BI) and ETLing of management data (on Kubernetes).
  • Automation of company processes using AI (ChatGPT, Anthropic, Gemini) and
  • Develop AI Agents (Dify)
  • Implemented and oversaw the use of timesheets for employee time tracking (in Jira) and reporting in Superset and ChatGPT prompt reporting.
  • Served as the JIRA and Confluence Administrator, managing configurations and providing expert guidance and solutions.
  • Implemented a knowledge management database and managed company documentation (including company Intranet).
  • Member of the Architecture Board, responsible for the Non-Functional Requirements (NFR) process (database and python)
  • Worked as a Python developer to automate manual tasks, enhancing efficiency and productivity.
  • Developed common components as React developer (Tailwind, ShadcnUI, and TypeScript)
  • Expert in PostgreSQL databases, providing robust solutions and optimizations.
Nordea Bank Apb SA.

2018-03 - 2022-01

Poland

Leading financial services group in the Nordic region and one of the biggest banks in Europe.

TEAM LEAD - HEAD OF DATABASE AND REPORTING POLAND

2020-02 - 2022-01

Responsibilities:
  • Leader of 21 people - ETL Developers (PL/SQL, DataStage, Alteryx, Spark, etc.), Python Developers (Pandas, NumPy), BI Developers (PowerBI, QlikView/QlikSense, OBIEE).
  • Back-office Reporting Designer, Tech Lead and development application provider of 3 applications (including cooperation with external companies - Clearing Houses - LCH/EUREX/NASDAQ, etc.).
  • Build short- and long-term plans and road maps for each application (including budget - 2mln EUR - responsibility).
  • Initiator of Tech Portal (Developer Power BI and Python) - Small leaders initiative to build knowledge about people skills and responsibilities in the company - My little idea is new in the scale of the organization.
TEAM LEAD - HEAD OF WBO REPORTING TECHNOLOGY

2018-03 - 2020-01

Responsibilities:
  • Leader of 15 people (IT Developers, IT Test Analysts, IT Test Manager, IT Analysts, Scrum Masters).
  • Application provider of 6 applications (development/maintenance responsibility and ownership).
  • Create short and long-term strategies for each application (including building a new architecture for reporting applications).
  • Help to build new teams in Poland for Nordic colleagues.
  • Agile / Scrum implementation in the teams (initiator of Scrum Master Community in Capital Markets).
  • Agile Coach to help the business to understand the Product Owner role (Prioritization of backlog in 3 scrum teams).
  • Nordea Trainer (SQL for beginners, Time Management in 1h, Confluence and JIRA from Beginner to Guru).
4
5
Nordea Bank Apb SA (Capital Markets)

2016-08 - 2018-03

Poland

Leading financial services group in the Nordic region and one of the biggest banks in Europe.

TEAM LEAD - HEAD OF DATABASE AND REPORTING POLAND

2017-10 - 2018-03

Responsibilities:
  • Leader and Scrum Master of 8 people (IT Developers, IT Test Analysts, and IT Analysts).
  • Interviews of new people into the Nordea Polish Office (help Nordic colleagues to hire people in Poland).
  • Application provider / full responsibility for the 4 applications (mandatory / back-office applications).
IT SENIOR DEVELOPER (ETL Developer)

2016-08 - 2017-10

Responsibilities:
  • Designer and developer of regulatory reporting for Nordea Capital Markets (PL/SQL + IBM DataStage + Java + Data Modelling) + Start working with Capital Markets products (Swaps, Options, Forex, etc.).
  • Create a Java component to mask data on Dev/Test Environment (Java component for IBM Datastage).
  • Scrum master in projects.
  • Mandatory / Regulatory reporting (ESMA, FSA, EBC, etc.) for Denmark, Sweden, Finland and Norway - Customers Tax Reporting / Back-office Reporting / MiFID II – Regulatory Reporting / EMIR Level 3 – ESMA Regulatory Reporting / ECB Regulatory Reporting.
Nordea IT Poland Sp z.o.o

2014-01 - 2016-07

Poland

Leading financial services group in the Nordic region and one of the biggest banks in Europe.

IT EXPERT DEVELOPER (ETL / TEST AUTOMATION DEVELOPER)

2014-01 - 2016-07

Responsibilities:
  • Author of many standards connected to Oracle database and data warehouse (including CI/CD).
  • Maintain, refactoring, optimization, performance tuning the Oracle Database (PL/SQL codes).
  • Created a Jira migration tool (JAVA / REST) between two instances of JIRA (at that time, it was not available on the market).
  • Problem Management (solving problems connected to the Oracle database).
  • Scrum Master in projects.
  • Create T24 data extracts to deliver data to General Ledger + Test Automation Developer(HP ALM, HP UFT, C#).
6
7
Nordea Bank Polska SA

2006-08 - 2014-01

Poland

Leading financial services group in the Nordic region and one of the biggest banks in Europe.

IT SENIOR DEVELOPER (ETL DEVELOPER)

2011-04 - 2014-01

Responsibilities:
  • Be part of the best of the best developers’ team to solve hard production and performance problems (Problem Management) - First Agile / Scrum team in Nordea Bank Poland - Maintain, refactoring, optimization, performance tuning the Oracle Data Base flows (PL/SQL codes) in Nordea Baltic Countries.
  • Analyst, designer, and developer of data warehouse solutions in Nordea Poland, Estonia, Latvia, and Lithuania.
  • Create Data Warehouse structures, ETL’s and reporting data marts (including reports for ECB = European Central Bank).
  • Coordinate external consultants’ work/tasks – be responsible for what they are delivering (approve their work).
  • Responsible for migrating many repositories from SVN to GIT (create standards connected with GIT).
  • Confluence / JIRA / Fisheye / Crucible Administrator and main Content Manager.
IT SYSTEM ANALYST (ETL DEVELOPER)

2006-08 - 2011-03

Responsibilities:
  • Analyst and developer of Oracle data warehouse solutions (including ETLs and DB).
  • Author of many standards connected to Oracle database (based on Steven Feuerstein), which was used by Nordea Bank Poland and later on by Nordea Group.
  • Responsible for accounts statements for the whole bank and created Core Banking reporting (Globus -T24).
  • Extract data from the Core Banking System to load into Oracle Data Warehouse (CDW).

Education

University of Gdańsk
2011-2012
Post Studies - Team Management
Thesis:
Knowledge Management in Big Organisations.
University of Gdańsk
2000-2006
Master of Physics and Mathematics (+ second specialization: Computer Physics)
Thesis:
Analysis of the Star Rotation Speed in the Pleiades.
Information:
In 2002 started the second specialisation, Computer Physics, and started working in Nordea from 2006.08.