Tomas Livora, Software Developer in Prague, Czech Republic
Tomas Livora

Software Developer in Prague, Czech Republic

Member since February 10, 2019
Since 2013, Tomas has been making a living as a full-stack developer working with large corporations as well as early-stage startups. Highlights from his career include working for Red Hat on its core JBoss products, co-founding his own company, Lumeer.io and later joining another startup, Mapotic.com, as a front-end specialist. He specializes in building modern single-page applications with a strong emphasis on a beautiful UI and a great UX.
Tomas is now available for hire

Portfolio

  • Snappy Kraken
    Laravel Mix, Vue.js Router, TypeScript, Laravel, PHP, WordPress, Sass, SCSS...
  • Timbergrove
    Styled Components, React, Architecture, Node.js, Front-end, Sass, CSS...
  • Mapotic
    Cypress.io, HTML, NPM, CSS, JavaScript, SCSS, NgRx, E2E Testing...

Experience

Location

Prague, Czech Republic

Availability

Part-time

Preferred Environment

GitHub, WebStorm, Linux

The most amazing...

...project I've worked on is Lumeer: a flexible information system that gives users the same freedom as spreadsheets but enables more advanced data manipulation.

Employment

  • Full-stack Developer

    2019 - PRESENT
    Snappy Kraken
    • Maintained a SaaS product used by many users and several enterprise clients.
    • Developed new features and fixed bugs in the existing multi-page application based on WordPress and Vue.js.
    • Developed a single-page application based on Laravel and Vue.js as a side project.
    • Optimized the previous version of the company web page by increasing its Google Lighthouse score.
    • Collaborated with the design department to create a newly redesigned web page.
    Technologies: Laravel Mix, Vue.js Router, TypeScript, Laravel, PHP, WordPress, Sass, SCSS, CSS, HTML, Vue CLI, Vuex, Vue.js, JavaScript
  • Lead Front-end Developer

    2020 - 2020
    Timbergrove
    • Oversaw and participated in the development of multiple complex single-page applications.
    • Designed and improved the architecture of multiple applications, refactored essential legacy code, and introduced a state management library.
    • Led a complete redesign of an existing application.
    • Put in place useful tools and CI processes to improve the developer experience and eliminate preventable bugs.
    • Reviewed regularly the code of four front-end developers, taught them best practices, and helped them resolve tricky issues.
    Technologies: Styled Components, React, Architecture, Node.js, Front-end, Sass, CSS, Clean Code, REST, Angular CLI, Sentry, AWS S3, GitHub Actions, Storybook, RxJS, NgRx, SCSS, JavaScript, TypeScript, Angular Material, Angular
  • Front-end Developer

    2018 - 2019
    Mapotic
    • Led the process of making the application more reactive using a state management library.
    • Contributed to the redesign of the application's UI.
    • Proposed and executed some crucial refactorings of the legacy code that made the application more stable.
    • Covered basic use cases by a set of E2E tests using Cypress.
    • Advocated the use of GitFlow to speed-up the development process and deployment cycle.
    Technologies: Cypress.io, HTML, NPM, CSS, JavaScript, SCSS, NgRx, E2E Testing, Angular Material, Angular CLI, Mapbox GL, Storybook, Sentry, Front-end, SaaS, RxJS, Sass, LeafletJS, TypeScript, Angular
  • Co-founder

    2017 - 2019
    Lumeer
    • Designed a reactive front-end architecture to support switching between various visual interpretations of data and enable collaboration between multiple users.
    • Switched the back end to a three-layer architecture to support growing the application's size with minimal technical debt.
    • Led a team of up to five developers, implemented frequent code reviews, and advocated industry-best practices.
    • Set up an E2E test suite and covered important parts of the application by automated tests.
    • Reported and fixed bugs in various libraries our product depended on.
    • Contributed to business planning and strategic decision-making.
    Technologies: Architecture, NPM, API Testing, Java EE, CSS, JavaScript, Clean Code, REST, Angular CLI, SCSS, NgRx, Cypress.io, Maven, E2E Testing, Sentry, Auth0, CircleCI, Travis CI, DigitalOcean, WildFly, Full-stack, Front-end, SaaS, Bootstrap, RxJS, Sass, MongoDB, Java, TypeScript, Angular
  • Quality Engineer

    2013 - 2017
    Red Hat
    • Tested JBoss Business Process Management (BPM) Suite and JBoss Business Rules Management System (BRMS) products.
    • Ran automated test suites and analyzed test results.
    • Tested installers, the BPM engine, web application UIs, remote APIs, and performance.
    • Reported around 200 complex bugs and verified much more.
    • Created three large automated test suites from scratch.
    • Made over 30 voluntary code contributions to tested projects.
    Technologies: API Testing, REST, JBoss AS, JPA, Maven, WildFly, Java EE, Java

Experience

  • Lumeer
    https://www.lumeer.io/

    As a CTO, I was responsible for the development of this visual project and team management tool.

    I led a team of up to five developers, designed the architecture of the system, and implemented a large part of it.

    The back end was based on Java EE, ran in a WildFly application server, and used MongoDB as the primary data storage. The front end was based on Angular; it was made fully reactive using NgRx state management library and used many other libraries (such as Mapbox GL, Plotly, Frappe Gantt, etc.) to display various visual representations of data. The application ran on multiple nodes in DigitalOcean cloud and used Auth0 for user authentication.

    The design decisions I made early on enabled us, for example, to easily implement real-time user collaboration using Pusher in later stages.

  • Mapotic
    https://www.mapotic.com/

    I gradually became the main front-end developer responsible for this map social network with over 50 000 monthly active users. The application was based on the latest Angular and used Leaflet to render a map. I introduced a new Redux-like architecture (based on NgRx) which contributed to smooth UX and made the application more stable.

  • SilverWare
    https://github.com/SilverThings/SilverWare

    I contributed to this microservice platform while working on my master's thesis. I integrated various fault-tolerance mechanisms (based on Hystrix) which can be easily configured by Java annotations. In order to enable this, I also had to make significant changes in the SilverWare core.

  • PSI Coupon Dashboard

    I built from scratch a web administration for an iOS app based on Firebase. The web application was built using Angular, NgRx, and Material Dashboard Pro theme.

  • HA Blueprints

    I built a web application which enables users to share blueprints of their houses with others. It was built using Angular, NgRx, and Material Dashboard Pro theme. We used Firebase as the database, file storage, and authentication service; various tasks were also automated using cloud functions.

Skills

  • Languages

    JavaScript, HTML, Java, TypeScript, CSS, Sass, SCSS, PHP
  • Frameworks

    Angular, Bootstrap, Cypress.io, JPA, Angular Material, Redux, Apache Camel, Laravel, Laravel Mix, Hibernate
  • Libraries/APIs

    NgRx, RxJS, Mapbox GL, Vuex, LeafletJS, React, Node.js, Vue.js
  • Platforms

    Firebase, Java EE, AWS EC2, Android, WordPress, Amazon Web Services (AWS), Linux, DigitalOcean
  • Storage

    Cloud Firestore, AWS S3, JBoss AS, MongoDB
  • Other

    UI Components, API Testing, SaaS, Responsive Design, Front-end, Full-stack, Firebase Cloud Functions, Firebase Hosting, Storybook, GitHub Actions, AWS, Styled Components, Vue.js Router, Cloud, Accelerated Mobile Pages (AMP), User Interface (UI), Real-time Data
  • Tools

    Git, Maven, NPM, Angular CLI, GitHub, WebStorm, JBoss BPM Suite, Vue CLI, Sentry, Auth0, Webpack, Gulp.js, CircleCI, Travis CI, WildFly
  • Paradigms

    E2E Testing, Reactive Programming, Clean Code, Responsive Web Design (RWD), REST

Education

  • Master's degree in Informatics
    2014 - 2017
    Masaryk University - Brno, Czechia
  • Erasmus+ exchange program in Information Technology
    2015 - 2015
    University of Oslo - Oslo, Norway
  • Bachelor's degree in Informatics
    2011 - 2014
    Masaryk University - Brno, Czechia

Certifications

  • AWS Certified Cloud Practitioner
    OCTOBER 2020 - OCTOBER 2023
    Amazon Web Services
  • Red Hat Certified Architect: Enterprise Application Development
    JUNE 2017 - JANUARY 2019
    Red Hat
  • Red Hat Certificate of Expertise in Business Process Design
    JUNE 2017 - JANUARY 2021
    Red Hat
  • Red Hat Certificate of Expertise in Camel Development
    FEBRUARY 2017 - JANUARY 2021
    Red Hat
  • Red Hat Certified JBoss Administrator
    OCTOBER 2016 - OCTOBER 2019
    Red Hat
  • Red Hat Certificate of Expertise in Developing Fast Cache Applications
    JULY 2016 - JULY 2019
    Red Hat
  • Red Hat Certified JBoss Developer
    MARCH 2016 - JANUARY 2021
    Red Hat
  • Red Hat Certificate of Expertise in Persistence
    AUGUST 2015 - AUGUST 2018
    Red Hat

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