Ярослав

Profile
OBJECTIVE
I am a results-oriented Senior Frontend Developer with 7 years of professional
Yaroslav experience, specializing in React.js and JavaScript. My career is marked by a diverse
range of successful projects across various industries, including child medicine, job
Taranenko recruiting, ISP providers, and more, serving clients globally.

FRONTEND DEVELOPER
Key Achievements:

Details
Odessa, Ukraine • Led the development and launch of responsive websites and corporate
[open contact info](look above in the "contact info" section) SaaS solutions, transforming design mockups into high-quality code.
[open contact info](look above in the "contact info" section) • Specialized in Object-Oriented (OOJS) and Functional Programming using
TypeScript, creating project architectures from the ground up.
Links • Significantly improved website performance, removed malware, optimized
Linkedin speed, and managed website transfers.
Github • Successfully integrated RESTful APIs and GraphQL with the frontend to
Upwork enhance functionality and user experience.
Gitlab • Collaborated with cross-functional teams to develop and deliver user-facing
features, translating designs into efficient code.
• Conducted technical assessments of UI mockups/wireframes, ensuring the
Skills
feasibility of implementation.
Leadership
• Led code refactoring efforts to enhance code readability, extensibility, and
Product Strategy testability, setting a strong example for the team.

Product Expansion • Documented system designs and updates throughout the development
cycle, ensuring clear communication.
A/B testing and
experimentation
Achievements & Impact:
Agile Development

JavaScript • Received recognition for code quality and efficiency, resulting in smoother
development cycles and fewer post-release issues.
Typescript
• Implemented user-facing features in ReactJS and Typescript. Collaborated
React with the UX/UI design team to implement interfaces.

AngularJS • Integrated RESTful APIs and GraphQL with the frontend including private
and governmental ones.
• Reduced website loading times by 30% through extensive speed
optimization, resulting in improved user satisfaction.
• Successfully negotiated pricing and fees with vendors, slashing
payroll/benefits administration costs by 30% while maintaining service
quality.
• Played a key role in enhancing website security by removing malware and
implementing security protocols, protecting user data.
• Contributed to the successful launch of e-commerce platforms, resulting in
increased online sales and revenue.
• Collaborated with cross-functional teams to meet project deadlines,
ensuring the timely delivery of high-quality features.
• Demonstrated expertise in AWS services, including AWS Cognito and AWS
Lambda, contributing to seamless cloud integration.
Technologies

• Services: Rest API, GraphQL,• Data: SVG, Facebook Graph API, MySQL,
PostgresSQL
• Framework: ReactJS, Material UI, Typescript, Bootstrap CSS, Webpack,
WebdriverIO, styled components, Jest, JWT, Enzyme, jQuery Mobile,
Foundation CSS, Yii 2, Redux, AngularJS, Angular
• Standard: Telnet, DHCP, CORS, DNS, OpenVPN, X11, Git, WDM, AJAX
• Other: JsUnit, Flow, Linters and Formatters, Cross-browser compatible
HTML/CSS markup, Document Object Model, Cognito, PINGDOM, API
Gateway, Apache Guacamole, htop, SVG.js, Mathematica Wolfram
Language, CSS Modules, Semantic UI, JSMin, OneDrive, Safari
DevTools/Extensions, Abstract, AWS Amplify, Bitbucket Pipelines, Apollo,
Axios
• Library: Underscore.js, Redux Saga, redux-actions, React Router, Redux
Form, Redux Thunk, lodash, Redux Toolkit, Next.js
• Computer Language: HTML, JavaScript, ECMAScript, SASS/SCSS, LESS,
PostCSS,
PowerShell, C++
• Solution: ESLint, Hotjar, MathCad, Oracle VirtualBox, WebDriver, Jira,
Jshint, Trello, Figma,, Atom, InVision, Asana, Grunt, Gulp, Xcode, Sketch,
JetBrains WebStorm, Wireshark, Adobe Photoshop, Redux Toolkit, Chrome
DevTools, WordPress, DigitalOcean, JetBrains PhpStorm, MaxCDN,
BitBucket, GitHub, Zeplin, Microsoft Word, Google Analytics
• Platform: Slack, NPM, Windows 7, WooCommerce, Windows 8, Shopify
Platform, Android SDK, Microsoft Windows, Windows 10, Mac OS,
Linux(Ubuntu, Cent OS, Mint, Arch)

Employment History
Senior Frontend Developer at Zynca, Stockholm
NOVEMBER 2022 — PRESENT

• Implement user-facing features in ReactJS and Typescript.
• Collaborate with the UX/UI design team to implement interfaces.
• Integrate RESTful APIs and GraphQL with the frontend.
• Conduct code reviews and refactoring tasks.
• Write unit and integration tests.
• Debug and fix issues during development.
• Use version control systems like Gitlab for code management.
• Communicate effectively with core team and stakeholders
• Produce clear and comprehensive feature documentation.
• Ensure security compliance and protect sensitive user data.
• Ensure the web application meets accessibility standards.
• React\Typescript to PDF solutions expert
• Proficiency in webpage printing
• Participation in everyday meetings
• Code contributions for a mid size project complexity
 • General expertise to other team members in testing\implementing features
• Project planning
• Problem solving
• Task prioritizing

Web Ui Software developer at Epam Systems, Kiev
JUNE 2020 — NOVEMBER 2022

• Contributed to a library of UI components for a proprietary healthcare CRM
system
• Provided code refactoring - fixes and code debugging
• Tested UI with Jest and WDIO tests
• Performed integration with backend
• Created reusable components
• Participated in discussion of tech solutions
• Participated in various self
• educational events on cybersecurity

Frontend Developer at Innovint, California
FEBRUARY 2018 — JUNE 2020

• Planning of project front-end architecture on React
• Development of UI components using React
• Debugging and code review of existing architecture
• Integration of AWS services
• Code refactoring
• Providing full project documentation
• Converted designs from Sketch/Zeplin toHTML/CSS/React layout, and built
a web application for it, using modern technologies such as React, Webpack
2
• Used MapBox/Leaflet API for map integration
• Optimized it for speed loading and caching

Frontend Developer at Olimp Games, Kazakhstan
FEBRUARY 2017 — JANUARY 2019

• Created a SPA on React for gambling
• Converted design from Figma to React layout
• Participated in daily SCRUM meetings
• Lead the team for a couple of months
• Provided a code review
• Made releases
• Took part in demos to stakeholders
• Supervised the development of the project
• Took an active part in the implementation of fixes that improved the
project performance and reliability
Frontend Developer at Pure Research & Design, USA
OCTOBER 2017 — DECEMBER 2018

• Big WordPress website

Frontend developer at Nicely Built, USA
AUGUST 2016 — OCTOBER 2017

• WordPress websites, Facebook API integration, website printing,
accessibility improvements, and website maintenance and security.

Education
Masters, Odessa National Academy of Telecommunications, Odessa
SEPTEMBER 2012 — JANUARY 2018

Obtained masters degree in computer science and radio engineering(fiber optics
faculty) 2018