11/30/2024 updated

**** ******** ****
100 % available

Senior React Full-Stack Engineer

Lueta, Romania
Only remote
Master of Enterprise Software Design and Development
Lueta, Romania
Only remote
Master of Enterprise Software Design and Development

Profile attachments

Szilard_Lazar_CV_2024.pdf

Gulp.jsHTMLJava (Programming Language)JavaScriptPHPApplication Programming Interfaces (APIs)Agile MethodologyUnit TestingCascading Style Sheets (CSS)Code CoverageSoftware QualityDatabasesContinuous DeliveryContinuous IntegrationLinuxDevOpsWeb DevelopmentDrupalECMAScript (C Programming Language Family)GitHubScalabilityCharacter Encodings in HTMLMongoDBNode.jsObject-Oriented Software DevelopmentScrum MethodologyNext.jsShell ScriptSQL DatabasesStreamlineTypeScriptWeb ApplicationsWeb Performance OptimizationEnterprise Application SoftwareReact.jsCypress (Programming Language)Code StructureGitWebpackAngularJSGraphQLFront End Software DevelopmentReact ReduxRestful ApiMarketplaceJenkinsProgramming Languages
I am a Senior React | Next.js Full Stack Engineer with 6+ ????? ?? ?????????? in the industry.

As a Senior React and Next.js Fullstack Engineer, my role involves architecting and streamlining web applications to enhance performance and scalability.

Skills / tech stacks:
Agile Method, Angular, API, CSS, Cascading Style Sheets (CSS), HTML code, test coverage, code structure, Continuous Delivery, Continuous Integration, CI/CD, Cypress, database, DevOps, Drupal, ECMAScript, Enterprise Software, Frontend, GIT, Github, GraphQL, Gulp.js, Gulp, HTML, web interface, Computer Science, Java, JavaScript, Jest, Jenkins, Linux, talent marketplace, MongoDB, Next.js, NodeJs, Node.js, Object-Oriented Programming (OOP), PHP, programming languages, Redux, Javascript React, React, React.js, REST API, REST APIs, SQL, Scrum, Scrum Master, shell script, code quality, Typescript, Unit Testing, web applications , Web Development, Web Performance, Webpack

Experience

Professional experience5 - 10 years
Freelancer since2021

Languages

EnglishGoodRomanianGoodHungarianNative speaker

Project history

Senior React Full-Stack Engineer

Sonos Inc

Government and Public Services

500-1000 team member

The client, a strong manufacturer and marketer of speakers and home sound systems, was
struggling with maintaining, developing and connecting multiple applications, built in
different programming languages ​​​​and repositories.
  • Strongly contributed on designing and implementing a monorepo architecture by using Turborepo and Next.js and migrated existing applications into the new architecture while solving scalability issues.
  • Reduced the build and deployment time of the new changes with approximately 60%, by splitting the applications into smaller, independently buildable and cacheable pieces
  • Enhanced code quality and refactored existing components, significantly improving the maintainability of the system.
  • Implemented new features, migrated and recreated web applications by using the newest technologies (Next.js, React, Typescript, GraphQL, Headless CMS) in order to fit into the new monorepo architecture.

Skills: React.js . WebPerformance . Next.js . GraphQL . Cascading Style Sheets (CSS) .
JavaScript . ECMAScript . Webpack . WebDevelopment . Design . Vercel . Content
Management Systems (CMS) . Object-Oriented Programming (OOP) . REST API's .
Story book . Git . TypeScript . Sanity CMS . Optimizing Performance . Continuous
Integration and Continuous Delivery (CI/CD). Yes

Senior React Full-Stack Engineer - Tech Lead

Cognizant Softvision Estee Lauder

Goods & Retail

>10.000 team member

The client, a leading manufacturer and marketer of beauty products, was wasting a
significant amount of time and money on the build and deployment processes, due to
lacking automation and currently employing a legacy code structure.
  • Conducted a team of 8 developers and 2 QAs by working closely with the team's Project Owner and Scrum Master.
  • Continuously worked closely and synced with other team (20+ teams) leaders to gather all the necessary information for the team, and to share all the important information with other team leaders.
  • Actively involved in planning, defining, designing, estimating and breaking down the next big targets/tasks.
  • Improved development speed of new library by 60% by designing various generators by using NX and Next.js to automatically create source, test and configuration files.
  • Decreased deployment time of new changes by 85% by designing a multiple stage based algorithm and by implementing a fully optimized Jenkins job (in shell script).

Skills: React.js . WebPerformance . Next.js . NX . Cascading Style Sheets (CSS) . Cypress
. JavaScript . ECMAScript . Webpack . Jenkins . DevOps . Redux . WebDevelopment . PHP
. Design . Drupal . Gulp . Content Management Systems (CMS) . Object Oriented
Programming (OOP) . REST API . Git . TypeScript . Linux . Optimizing Performance . MobX
. Continuous Integration and Continuous Delivery (CI/CD). Yes . HTML

React Frontend Engineer

Paved Marketing

Marketing, PR and design

10-50 team member

The client, a sponsored content marketplace simplifying third-party relationships for
advertisers and publishers, was wasting a great amount of time on painfully slow, manual
drafts of newsletters and advertisements creation processes due to lacking automation in
internal processes.
  • Reduced ad templates creation time for newsletter owners by 70% by implementing an application and exposing it through a web interface by providing the opportunity to save the designed template's HTML code to the database and using/editing it in the future.
  1. Decreased sponsorship information collection time from advertisers by 70% by implementing a tool (by using Next.js) which not only collects the required information, but immediately displays it in a Preview window.
  • Reduced bank detail collection time from customers by more than 80% by designing a custom-tailored system by closely communicating with the client and by using Transferwise's API.
Skills: React, Next.js, Node.js, Vercel, Storybook, CSS, HTML, Transferwise API

React Full-Stack Engineer

Cognizant Softvision Estee Lauder

Goods & Retail

>10.000 team member

The client, a leading manufacturer and marketer of beauty products, was wasting a
significant amount of time and money on the build and deployment processes, due to
lacking automation and currently employing a legacy code structure.
  • Reduced build time of new changes from an average of 13 mins per build to under 1 min by designing a highly-efficient algorithm by designing an optimized incremental build strategy by using Gulp.
  • Improved page load time by 35% reducing the amount of CSS and JS loaded on the pages by splitting, minifying and purging all the assets in a fully optimized and automated way.
Skills: React.js . Cascading Style Sheets (CSS) . ECMAScript . Java . Jenkins . Drupal . Gulp
. REST API . Linux . MobX

Junior Angular Full-Stack Developer

Cognizant Softvision

Media & Publishing

10-50 team member

The client, an online talent marketplace connecting CEOs with qualified board director
candidates, was missing out on a significant amount of potential revenue, due to their
outdated, error-prone website lacking important key features.
  • Ensured 100% stability by achieving a rock-solid infrastructure and drastically increasing test coverage by writing unit and end-to-end tests for all the possible scenarios.
  • Increased overall revenue by 30% by investigating & fixing critical business issues and adding new features by using Angular, Node.js and MongoDB.
Skills: Angular, MongoDB, Node.js, Unit Testing (Jest), CSS, HTML

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