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Aleksandra Woźniak, Startups Developer in Munich, Germany
Aleksandra Woźniak

Startups Developer in Munich, Germany

Member since June 25, 2018
Aleksandra is an entrepreneur, engineer, and ex-startup CTO with nine years of experience working for both large corporations (Google, Elsevier, Capgemini) and start-ups. Her expertise lies in building Java back-ends for web applications and in big data technologies. Aleksandra is also a co-founder of Cleo, a virtual personal finance assistant, for which she developed natural language and financial data processing modules.
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Portfolio

Experience

Location

Munich, Germany

Availability

Part-time

Preferred Environment

Git, IntelliJ IDEA, Ubuntu Linux

The most amazing...

...project I've developed is Cleo, a personal finance assistant in FB Messenger that analyses users' spending, provides tips, and answers money-related questions.

Employment

  • Co-founder and CTO

    2015 - 2017
    Cleo AI Ltd.
    • Grew the business from 0 to tens of thousands of users in two years and raised £2.5 million for the business through private equity investors.
    • Served as the sole developer for one year. I developed a web application, SMS interface, and Facebook Messenger chatbot Cleo, the company's flagship product.
    • Implemented modules for analyzing a user's payment transaction history, detecting spending patterns and providing recommendations on how user's spending be optimized.
    • Implemented natural language processing functionality for Cleo chatbot.
    • Recruited and managed the founding engineering team. Led the technical product design and development.
    • Set and executed the technical strategy for the company, aligning product engineering with business goals.
    Technologies: PostgreSQL, SCSS, HTML5, JavaScript, Heroku, GitHub, Git, Facebook Messenger API, Ruby on Rails (RoR), Ruby, Chatbots

  • Java Developer (Big Data team)

    2015 - 2015
    Elsevier Limited
    • Developed Hadoop jobs for aggregating and processing sales data from various business units of Elsevier and creating financial reports.
    • Designed and prototyped central big data processing system for Elsevier, enabling access and processing functionalities for data sets across different departments.
    • Gathered requirements and performed estimations of the internal big data processing system.
    Technologies: Kanban, Pair Programming, Test-driven Development (TDD), Apache Spark, Docker, Amazon Web Services (AWS), Hadoop, Java, Data Processing, Big Data

  • Java/Full-stack Developer

    2013 - 2015
    Geonomics Global Games
    • Planned, designed, and implemented data aggregation and financial reporting software for a global map-based lottery game platform.
    • Maintained and enhanced the game's financial reporting and data aggregation modules.
    • Implemented registration and payment flow for the mobile version of GeoLotto game.
    • Designed and implemented a custom content management system for the game's website.
    • Introduced the domain-driven design paradigm to the development process, performed a thorough review of the codebase, and created a refactoring plan to transform the initial domain model into a more expressive one.
    Technologies: HTML, SCSS, Domain-driven Design (DDD), Code Reviews, Test-driven Development (TDD), Unit Testing, Google Web Toolkit, Apache Wicket, Hibernate, Spring MVC, Java

  • Chief Architect's Technical Assistant/Software Developer Intern

    2012 - 2013
    Hadapt Polska Sp. z o. o.
    • Investigated and tested new approaches to extend Hadapt's flagship product, a big data analytics platform that integrates SQL with Hadoop.
    • Prototyped new approaches to integrate text indexing with the platform, using Apache Lucene and Apache Solr. Tested the prototypes for performance.
    • Created end-to-end test architecture for Hadapt platform. Designed and implemented a suite of stress and scalability tests.
    • Managed team of three testers.
    Technologies: Amazon Web Services (AWS), IntelliJ IDEA, Eclipse, Apache Solr, Python, Bash, Gradle, Apache Hive, Hadoop, Java

  • Software Developer Intern

    2011 - 2012
    Google Switzerland GmbH
    • Implemented usability enhancing features for Google Flight Search and Google Hotel Finder.
    • Introduced new search types for Hotel Finder: searching by hotel name and searching by address.
    • Implemented an optimisation algorithm for efficient label placement on the Google Flights map.
    Technologies: Perforce, Git, Eclipse, Guice, Google Web Toolkit, Java

  • Software Developer Intern

    2010 - 2011
    Capgemini Polska Sp. z o. o.
    • Tested an interface and behavior of an application for a leading logistics company.
    Technologies: HP Quality Center (QC), Subversion (SVN), HTML

  • Java Web Developer

    2009 - 2010
    Wspólny Rynek Medyczny Sp. z o. o.
    • Implemented an internationalization feature for rynekmedyczny.pl -- an online database of Polish medical institutions.
    • Prepared mechanisms for transforming rough XML data of medical institutions into HTML documents.
    Technologies: PostgreSQL, SQL, Apache Ant, Subversion (SVN), CSS, HTML, JUnit, Eclipse, Apache Wicket, Cocoon, XML, XSLT, Java

Experience

  • Teaching Java Professionally (Other amazing things)

    In cooperation with the ProLearning Training Centre, I conducted two intensive 5-day-long Java courses for IT professionals: "Introduction to programming using Java" and "Advanced Java".

Skills

  • Languages

    Java, Ruby, SQL, HTML, Bash, XSLT, XML, CSS, JavaScript, HTML5, SCSS, CSS4, Python

  • Frameworks

    Spring, Hibernate, Spring MVC, JUnit, Ruby on Rails (RoR), Hadoop, Apache Spark, Google Web Toolkit, Guice, Spark, Apache Wicket

  • Tools

    IntelliJ IDEA, Git, Maven, GitHub, Gradle, Perforce, Subversion (SVN), HP Quality Center (QC), Apache Ant, Apache Solr

  • Paradigms

    Test-driven Development (TDD), Unit Testing, Dependency Injection, SOLID Principles, Pair Programming, Kanban

  • Other

    Startups, Code Review, Code Refactoring, Lean Startups, Big Data, Chatbots, Data Processing, Code Reviews, Domain-driven Design (DDD)

  • Libraries/APIs

    Facebook Messenger API, Cocoon, Spring REST, jQuery, Apache Lucene

  • Platforms

    Amazon Web Services (AWS), Heroku, Ubuntu Linux, Docker, Eclipse, Linux

  • Industry Expertise

    Fintech

  • Storage

    PostgreSQL, Relational Databases, Apache Hive

Education

  • Master of Science degree in Computer Science
    2010 - 2013
    University of Wrocław - Wrocław, Poland
  • Bachelor of Science degree in Mathematics
    2007 - 2011
    University of Wrocław - Wrocław, Poland
  • Bachelor of Science degree in Information Technology
    2005 - 2009
    Poznań University of Technology - Poznań, Poland

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