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Piotr Jachowicz, Software Developer in Warsaw, Poland
Piotr Jachowicz

Software Developer in Warsaw, Poland

Member since August 26, 2016
Piotr is a full-stack web developer who is partial to .NET for his back-end framework and on the front end as well. He has significant experience working with various JavaScript frameworks and libraries (mainly with jQuery, Vue.js, and Angular). Piotr is a quick learner, so he’s not limited to the usual suspects for frameworks—he’s willing and able to learn new skills needed on any particular project rapidly. Member of Toptal Speakers Network
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Portfolio

Experience

Location

Warsaw, Poland

Availability

Part-time

Preferred Environment

Windows, Git, Visual Studio

The most amazing...

...project I've worked on was creating an Angular app that was embedded into an existing desktop app, for ease of a later transition to a full web app.

Employment

  • Azure Developer

    2018 - PRESENT
    911Weather.com
    • Maintained and rewrote the newer version of a mobile app back end in Node.js.
    • Created a deployment pipeline along with a test environment for the client.
    • Developed modern tooling for the client with the front end in Angular and back end in Node and .NET.
    • Implemented a back end for subscriptions as in-app payments for iStore and Google Play Store.
    • Maintained and developed a Microsft SQL database, as well as API in Node.js that utilized this database.
    • Refactored a legacy service that processed weather data written in C#.
    Technologies: Angular, Node.js, Azure

  • Senior Developer (Vue.js, Angular, .NET)

    2018 - PRESENT
    Santander Denmark via ProData Consult
    • Maintained and developed a new functionality on Santander Consumer Bank Denmark's main web page and platform.
    • Developed and maintained the front-end layer of the Santander Denmark's main page.
    • Developed the Santander Finland webpage using React and Episerver.
    Technologies: React, .NET, Angular, Vue.js

  • IT Trainer

    2016 - PRESENT
    Multiple Coding Academies
    • Designed and conducted multiple workshops for beginner-level developers concerning variuos full-stack of web technologies (Angular 6, .NET Web API, Basics of C#, CSS, SCSS, jQuery, and more).
    • Designed and conducted multiple expert-level workshops for large companies such as the advanced development of WCF services, design patterns and code quality in C#, and advanced JavaScript.
    Technologies: Windows Communication Framework (WCF), Entity Framework, SQL, jQuery, Angular, .NET

  • Freelance Angular Developer

    2018 - 2019
    Expedien, Inc.
    • Created a taskboard in Angular according to the design.
    • Built multiple components based on design.
    • Cooperated with the designers and the backend developers to ensure proper quality of the provided solution.
    Technologies: Angular

  • .NET Web Developer

    2017 - 2018
    StepStone
    • Refactored the existing code to use design patterns and best practices.
    • Developed a service in .NET Core to be used for new pricing model calculations.
    • Maintained the largest recruitment platform in the UK.
    Technologies: Octopus Deploy, TeamCity, jQuery, Microsoft SQL Server, ASP.NET Core

  • .NET Lead Developer

    2017 - 2017
    Aviva
    • Managed the work of a team of four full-stack developers.
    • Mentored the team and enforced Scrum principles which ensured the quality of the Scrum process.
    • Created and enforced coding standards which ensured the quality of solutions created by the team.
    • Transitioned the development from a London-based team to a Warsaw-based team.
    • Created a design of the new architecture for new and existing applications.
    Technologies: SQL, Entity Framework, Bitbucket, Git, Knockout.js, jQuery, Windows Communication Framework (WCF), Web API 2, ASP.NET MVC 5

  • .NET Web Developer

    2016 - 2016
    KMD Poland
    • Developed a web application that handles the complex management for utility companies in the Denmark market; built the front end in Angular and the back end in .NET Web API 2.
    • Implemented a set of controls with a validation framework for the application which made the development process significantly quicker.
    • Ensured the high quality of the development solution by proposing and implementing code quality enhancements.
    Technologies: Gulp.js, Git, IBM Db2, Angular, ASP.NET Web API

  • Junior .NET Developer

    2015 - 2015
    AXA Direct Solutions
    • Supported a large, multi-tenanted insurance platform for AXA Group UK.
    • Worked remotely with a team located in London.
    • Developed a new design for the home insurance product sales flow.
    Technologies: Microsoft SQL Server, jQuery, Knockout.js, ASP.NET MVC

  • Associate

    2013 - 2014
    PwC (PricewaterhouseCoopers, Poland)
    • Maintained and conducted workshops for a desktop application facilitating the financial reporting process.
    • Built an entire platform; including the web app, desktop app, and web services for voting for the Polish Movie Awards.
    • Developed multiple web apps used for gathering financial data from users.
    • Contributed to the statutory financial audit as an auditor, gaining knowledge about accounting processes.
    Technologies: jQuery, Microsoft SQL Server, Entity Framework, ASP.NET MVC, Windows Communication Framework (WCF), Windows Presentation Foundation (WPF), .NET

Experience

  • App.OfferAutomation.com | Development and Technical Management (Development)

    On this project, I helped deliver a web app (the front end was built in Angular 5 and the back end in ASP.NET). My primary role was to ensure the overall delivery, acting as a technical manager.

    I mostly performed code reviews, ensuring the highest quality of the delivered solution. I also facilitated communication between the developers working on the project and the client, took part in the recruitment process of new developers, proposed the high-level architecture of the solutions, provided insight with hosting, deployment, and so on. I also created a continuous deployment pipeline using Jenkins.

  • TotalJobs Recruiter Platform Pricing Model Change (Development)
    https://recruiters.totaljobs.com

    This was a large project that involved 15 teams, working together to change how the business worked on TotalJobs.co.uk, the largest recruitment platform in the UK.

    My role, as a member of a team, was to implement the back-end logic and database layer of a new pricing model for the company. The project ended up being a big success with the sales of the recruitment product licenses rising significantly.

Skills

  • Languages

    CSS, HTML5, JavaScript, C#, TypeScript, SQL, SCSS

  • Frameworks

    .NET, .NET Core, ASP.NET Web API, Entity, Swagger, Angular, ADO.NET, Express.js, ASP.NET Core, Windows Communication Framework (WCF), ASP.NET MVC, ASP.NET MVC 5, Knockout.js, Windows Presentation Foundation (WPF)

  • Tools

    Git, Jenkins, TeamCity, Azure DevOps Services, Jira, Visual Studio, Gulp.js, Bitbucket

  • Paradigms

    Agile, Scrum, FluentValidation

  • Platforms

    Visual Studio 2017, Visual Studio Code, Azure, Windows, Amazon Web Services (AWS)

  • Other

    MVC Frameworks, WCF Web Services, GitFlow, Episerver, Octopus Deploy, Cloud

  • Libraries/APIs

    Vue.js 2, jQuery, AutoMapper, Node.js, React, Entity Framework, Vue.js, Web API 2

  • Storage

    MSSQLCE, Microsoft SQL Server, IBM Db2

Education

  • Licentiate's degree in Management
    2011 - 2014
    Warsaw University of Technology - Warsaw, Poland
  • Master of Engineering degree in Electrical Engineering
    2009 - 2014
    Warsaw University of Technology - Warsaw, Poland

Certifications

  • Microsoft Azure Developer Associate
    MARCH 2021 - MARCH 2023
    Microsoft
  • Microsoft Azure Fundamentals
    JULY 2019 - PRESENT
    Microsoft
  • Professional Scrum Master I
    OCTOBER 2016 - PRESENT
    Scrum.org
  • Microsoft Certified Solutions Developer
    OCTOBER 2016 - PRESENT
    Microsoft

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