Bruno is available for hire
Hire BrunoBruno Jagic
Verified Expert in Engineering
Data Engineer and Alteryx Expert Developer
Nuremberg, Bavaria, Germany
Toptal member since March 29, 2019
Bio
Bruno is a senior data engineer with over 10 years of experience in designing data warehouses, building ingestion and transformation pipelines, and modeling data for analytics. He has deep expertise in SQL across platforms like SQL Server, PostgreSQL, Exasol, and AWS. Bruno is also a conference speaker and internal trainer, known for his top ratings in freelance work focused on data and SQL. He is seeking new remote opportunities to add value and effectively utilize his extensive experience.
Portfolio
Self Employed
Python, JavaScript, Deployment, Git, CI/CD Pipelines, Python 3, GitHub...
Enghouse Interactive
MySQL, Pipelines, Data Engineering, PostgreSQL, Sisense, Agile, Jira...
Piggy, LLC
SQL, Amazon QuickSight, AWS Glue, ETL, Complex Data Analysis, Apache Airflow...
Experience
- Database Design - 12 years
- SQL - 12 years
- ETL - 11 years
- APIs - 9 years
- Pipelines - 7 years
- Amazon Athena - 7 years
- Microsoft Power BI - 4 years
- Alteryx - 4 years
Preferred Environment
Microsoft SQL Server, Redshift, Amazon Athena, Amazon QuickSight, Sisense, Alteryx, Database Design, Amazon Redshift, AWS Glue, Data Pipelines
The most amazing...
...thing I've done is build Consumer DNA, a product for Adidas that became a core element of their email marketing and data science models.
Work Experience
Software Developer
2025 - 2026
Self Employed
- Designed and built eponude.hr, an end-to-end SaaS platform for Croatian electrical contractors covering offer generation from expense sheet, invoice intake, job-site cost tracking, worker hour logging, and analytics. Python, JavaScript, PostgreSQL, R2.
- Designed and built a multi-tenant SaaS platform for Croatian electrical contractors, end-to-end: FastAPI back end, React front end, PostgreSQL (multi-schema), Cloudflare R2 object storage, JWT auth, and role-based access (user/manager/admin).
- Engineered the Gradilišta (job-site) cost module, unifying material spend and labor cost into per-location KPIs with cost-split visualizations, supplier breakdowns, and category-level analytics.
- Designed the Dnevnik rada (worklog) subsystem: workers decoupled from app users, optional crew groups, weekly hour entry with cross-location visibility, and a per-worker/per-location heatmap calendar.
- Built an analytics layer with monthly spend timelines, supplier breakdowns, category donuts, and PDF export for client-facing reporting.
- Built 14 supplier-specific PDF invoice parsers (Schrack, Würth, Rexel, Ellabo, e-racuni, and others) with auto-detection, structured extraction, and a 19-category material taxonomy with auto-categorization.
- Built web scraping jobs that scrape prices from the most common Croatian webshops to get a list of material costs.
- Integrated installation norms so that we know how long it takes for each product to be installed, which is important when generating an offer from the expense sheet.
Technologies: Python, JavaScript, Deployment, Git, CI/CD Pipelines, Python 3, GitHub, Domain Research, Web Scraping, Playwright, Document Parsing
Data Engineer
2021 - 2026
Enghouse Interactive
- Architected and built a centralized SQL Server data warehouse consolidating data from 10+ acquired call center subsidiaries, replacing fragmented per-company reporting with a single source of truth.
- Designed a library of standardized Sisense dashboards that became plug-and-play once a subsidiary's data landed in the DWH, eliminating bespoke reporting work per acquisition.
- Delivered internal and external training on data warehouse concepts, the in-house DWH platform, and the company's wrapped Sisense dashboarding tool.
- Operated in an Agile environment using Jira and Confluence, coordinating delivery across engineering, BI, and subsidiary stakeholders.
- Served as the technical point of contact for new subsidiary implementations, scoping integrations with stakeholders, and driving them through to production.
- Led a team of students, owning technical direction, code review, and mentorship across the DWH and BI stack.
Technologies: MySQL, Pipelines, Data Engineering, PostgreSQL, Sisense, Agile, Jira, Data Pipelines, Medallion Architecture, ETL Pipelines, SQL, Python, Data Warehousing, ETL, Dashboards, Databases, Training, Salesforce API, Finance, Customer Support, SQL Server 2016, SQL Server Management Studio (SSMS), Entity-relationships Model (ERM), Data Analysis, APIs
SQL Developer | Data Engineer
2019 - 2022
Piggy, LLC
- Developed a full dashboarding solution with dashboards that provide insights to all relevant stakeholders in the team: worked closely with the CIO, built dashboards for the marketing team, and provided insights for the partnerships team.
- Automated the solution so that the whole team has the data ready for them when they wake up in the morning. Started from AWS Glue to the end of the data flow and dashboard.
- Improved data quality and standardized reporting. Used Alteryx to gather the data, put it all together, and perform data analysis and manipulation.
- Automated data flows from multiple data sources to a centralized location where all the relevant touchpoints can be joined together to get a full picture of our customers.
- Performed ad hoc analysis and data manipulation in Alteryx to see if a specific set of data would give us the required insights, and if so, to start with proper automation.
Technologies: SQL, Amazon QuickSight, AWS Glue, ETL, Complex Data Analysis, Apache Airflow, Databases, Database Development, Business Intelligence (BI), Dashboards, Data Visualization, Data Engineering, Microsoft Excel, Alteryx, Data Analysis
Alteryx Developer | Data Engineer
2016 - 2019
Adidas
- Integrated payment data for fraud analysis, designed databases, built automated solutions, and presented them to the business. The main tool I used was Alteryx.
- Architected a data quality framework for main integration topics like sales and clickstream data in an automated fashion.
- Built and maintained consumer DNA, a set of attributes from digital touchpoints: clicks from the website, sales, registration, paid media, NPS, and Bazaarvoice. It is a core product used in email marketing and personalization for better targeting.
- Spoke at conferences, including Alteryx Inspire 2018 in London, where I presented how we use Alteryx in Adidas. In March 2019, I attended as an invited guest to speak on a similar topic.
- Built Alteryx applications and workflows, such as a workflow that connects to different APIs to get data relevant to our apps, including the number of downloads, active users, and installations.
- Created applications that helped our database administrators automate their work. For example, an Alteryx workflow will create users, grant them privileges, and automatically email them with relevant information.
- Developed multiple workflows and applications for ad-hoc analysis, data quality, integration, and database administration using Alteryx.
Technologies: Alteryx, Confluence, Jira, Transact-SQL (T-SQL), Microsoft SQL Server, Exasol, Agile, SQL Server 2016, ETL, Complex Data Analysis, Databases, Database Development, Dashboards, Data Visualization, Data Engineering, Microsoft Excel, Data Analysis
Database Developer
2014 - 2016
CROZ
- Developed a data warehouse for Croatian tax authorities where the goal was to centralize all the relevant data that our government has to be able to provide them the ability to detect tax fraudsters.
- Built a warehouse for the Croatian Bureau of Statistics for data integration and analysis of all the relevant data about high school education in Croatia.
Technologies: Talend, SQL Server Integration Services (SSIS), IBM Db2, Microsoft SQL Server, ETL, Complex Data Analysis, Databases, Database Development, Data Analysis
Database Developer
2013 - 2015
Self-employed
- Used MySQL to store all data about properties in the US with a goal of estimating a value of specific property. My tasks included responsibilities for data quality in each step, such as integration, insertion to dimensional model, and preparation of reports for senior management.
- Built databases for students and small companies including everything from the collection of requirements to the design of solutions up to building a solution in a specific database (MySQL, MS SQL, Postgre).
- Created an integration process for loan reporting; the client had a collection of companies that have provided loan services, and all of them came to the system from which I had to build integration steps to provide insights.
- Used Alteryx to analyze the data, preparing insights and doing data cleanup.
- Provided data analysis for a client that wanted to predict the stock market; my part was to build SQL queries for a specific business use case and stock market items.
Technologies: Transact-SQL (T-SQL), SQL Server Integration Services (SSIS), Microsoft SQL Server, Talend, Complex Data Analysis, Databases, Database Development, Business Intelligence (BI), Dashboards, Microsoft Excel, Data Analysis, Jupyter Notebook
Experience
Consumer DNA
Built and optimized Consumer DNA, a solution that is core for digital business at Adidas. The goal of the solution was to create consumer attributes for each consumer so that it is easily accessible and usable by the end systems for website personalization and email marketing. A large percentage of emails sent by Adidas is now triggered by this solution.
DWH for Croatian Tax Authorities
A data warehouse for Croatian tax authorities to detect tax fraud. It was a massive collection of data that is owned by the Croatian government and is very sensitive; I was part of the team that was able to deliver this project within one year.
DWH for Croatian Bureau of Statistics
A warehouse for the Croatian Bureau of Statistics for data integration and analysis of all the relevant data about high school education in Croatia. The task was to integrate the complete dataset they have about all schools in Croatia.
Payments Data Integration
Integration of payments data for fraud analysis, where the first step was to migrate existing data from SQL Server into Exasol, and the second was to connect to the payment service provider and integrate the data on an hourly basis into the same database.
I was brought to Adidas for this. It was a one-man project for eight months, in which I was able to deliver a hyper-automated solution that works even now after two years of operation and optimization without an issue.
I was brought to Adidas for this. It was a one-man project for eight months, in which I was able to deliver a hyper-automated solution that works even now after two years of operation and optimization without an issue.
Education
2010 - 2016
Master's Degree in Computer Science
University of Zagreb - Zagreb
Certifications
DECEMBER 2022 - DECEMBER 2024
Microsoft Certified: Power BI Data Analyst Associate
Microsoft
FEBRUARY 2019 - FEBRUARY 2021
Alteryx Advanced Certified
Alteryx
NOVEMBER 2018 - PRESENT
Exasol Certified Database Developer
Exasol AG
NOVEMBER 2017 - PRESENT
Exasol Certified Scripting Expert
Exasol AG
NOVEMBER 2017 - PRESENT
Exasol Certified Performance Expert
Exasol AG
Skills
Libraries/APIs
Salesforce API, Playwright
Tools
Jira, Amazon Athena, Amazon QuickSight, Sisense, Confluence, Microsoft Excel, Tableau, AWS Glue, Microsoft Power BI, Apache Airflow, Adyen Payments, Git, GitHub
Languages
SQL, Transact-SQL (T-SQL), Python, JavaScript, Python 3
Paradigms
Database Design, Agile, Database Development, Business Intelligence (BI), Scrum, ETL
Platforms
Alteryx, Jupyter Notebook, Talend
Storage
Exasol, SQL Server 2016, MySQL, SQL Server Management Studio (SSMS), Databases, PostgreSQL, SQL Server Integration Services (SSIS), Datastage, Redshift, Microsoft SQL Server, IBM Db2, Data Pipelines
Other
Entity-relationships Model (ERM), Complex Data Analysis, Data Analysis, Dashboards, Data Visualization, Data Engineering, APIs, Pipelines, HTML Parsing, Amazon Redshift, Medallion Architecture, ETL Pipelines, Data Warehousing, Training, Finance, Customer Support, School, Deployment, CI/CD Pipelines, Domain Research, Web Scraping, Document Parsing
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