Donatas S.

About Me

I am a professional BI/Python Developer with 5+ years of technical expertise; curating innovative, performant and scalable solutions on projects with a tangible value for businesses. I have mastery in the delivery of solutions for web-based BI systems (Django/Flask), Data warehouse solutions, ETL pipelines, various API integrations, engaging visualisations (marketing funnel), and predictive analytics scripts.

Frontend

Backend

Database

DevOps

Other

Work history

UpStack
UpStack
Python Developer
2019 - Present (6 years)
Remote
  • Creating and developing innovative software solutions for clients across a broad range of industries.

  • Participate in scrums consisting of cross-functional teams, both software and hardware.

  • Ensure that features are being delivered efficiently and on-time.

TOPO Centras
TOPO Centras
BI Developer
2019 - 2019
Vilnius, Lithuania
  • Defined, designed, documented and implemented BI solutions on projects using Flask and developed APIs for funnel visualisation.

  • Engineered a Flask-based frontend reporting solution; to provide reporting and data services to employees for TOPO's marketing and operations.

  • Troubleshot complex issues, maintained and updated technical documentation; performing peer design and code reviews on solutions.

Firebird Tours
Firebird Tours
Developer
2017 - 2019 (2 years)
Vilnius, Lithuania
  • Developed and maintained Data Warehouse solutions with ETLs; iterating specific ad hoc solutions - cube-like reporting tools for SalesForce.

  • Worked on the delivery of descriptive and predictive analytics within the marketing function feature; to include analysis of performance, lead scoring, BI solutions linking Google Adwords with other data sources for ROI metrics, and other specific hypotheses.

  • Produced engaging data visualisations through Pandas Matplotlib, Google Data Studio, and data frontends for operations using Flask and Django.

HTA Design
HTA Design
Management Information System Coordinator
2015 - 2016 (1 year)
London, United Kingdom
  • Participated in the design of requirements for managerial reporting; developing specifications, implementing solutions and coordinating with third parties - Union square architecture, ERP system providers and custom APIs.

  • Engineered a managerial reporting tool with functionalities for daily forecast and cost reporting; improving monthly board report processes.

  • Created local Python and VBA tools for architecture team leaders automating tedious calculation processes from CAD designs.

 Barclays Technology Centre
Barclays Technology Centre
PMO Analyst
2014 - 2015 (1 year)
Vilnius, Lithuania
  • Developed and worked with Python and VBA for the iteration of tools used for report automation and data retrieval; increasing the overall efficiency of operations.

  • Exercised technical judgment for project/programme financial reporting and forecasting deliverables.

  • Anticipated challenges, removed roadblocks, and fostered alignment by providing training to project stakeholders.

Western Union
Western Union
Compliance Analyst
2012 - 2013 (1 year)
Vilnius, Lithuania
  • Built tools for analysis on suspicious activity, generating reports and interacting with various stakeholders.

  • Developed the automatic report generation tool using Python and VBA and improving SLA performance.; adhering to corporate layout requirements.

  • Served as liaison and support point of contact; reviewing and evaluating risks on projects for WU.

Showcase

Personal Project - Semantica.DS (ver 1.0)
Personal Project - Semantica.DS (ver 1.0)
  • Developed a personal self-marketing tool focused on semantic analysis.

  • Implemented frontend and backend components for a semantics analysis tool.

  • The tool accepts text input files up to 500KB and supports categorization via tags.

Full Stack BI Developer - TOPO BI
Full Stack BI Developer - TOPO BI
  • TOPO Centras is a leading household appliance and electronics retail network in Lithuania.

  • The company develops BI tools to improve marketing and operational activities.

  • The focus of these tools includes ETL pipeline development, data warehouse development, and report solutions for the frontend.

Full Stack BI Developer - Transaction Import Flask Tool
Full Stack BI Developer - Transaction Import Flask Tool
  • Developed a Flask-based solution for transaction data manipulation and presentation.

  • Implemented transaction management tools including import, summarization, output, and basic/single-user login.

  • Utilized Flask as the framework and SQLite as the database engine for the project.

Full Stack Developer - Salesforce Python Cubes BI Tool
Full Stack Developer - Salesforce Python Cubes BI Tool
  • Develops a Python-based tool that mimics OLAP Cubes by uploading Salesforce data to BigQuery.

  • Automatically generates SQL schema from scratch based on specified snapshot specifications.

  • Automates the data aggregation and visualization workflow for analysts using Excel and other tools.

Education

Education
Price2 Foundation
APMG Interna-tional
2014 - 2014
Education
Business Studies and Information Communication Technologies
The Open University
2007 - 2011 (4 years)