Roman

Roman Yasinski

FRONTEND DEVELOPER
@roman_yasinski 4yki +38093507313
Telegram: @
GitHub: 4
Phone: +
[open contact info](look above in the "contact info" section) [open contact info](look above in the "contact info" section)
Email: r
Linkedin: l
ABOUT
Frontend Developer with 5+ years of experience building high-traffic e-commerce, gaming and marketing platforms for global brands and regional markets. Iˇve worked on Salesforce Commerce Cloud storefronts, gambling/entertainment products and premium corporate sites, where the UI has to combine strict performance requirements with complex design and animation under tight deadlines.
I specialize in modern JavaScript, Vue, designing configurable UI modules, advanced layouts and animation systems that give marketing and content teams real flexibility (page-builder style CMS blocks, RTL-ready interfaces, scrollytelling experiences) without overloading the browser. As a senior/team lead I also align design and engineering, simplify over-complicated concepts into practical UI, and introduce performance optimizations (such as replacing heavy masks with clip-path to cut rendering cost by ~20-30%), helping teams ship visually rich experiences on time while keeping the site fast and stable for end users.
SKILLS
Languages: JavaScript, TypeScript, HTML5, CSS3, SCSS/Sass, JSON, Markdown
Frontend: Vue.js, Vuex, Pinia, Nuxt.js, Vue Router, Vite, jQuery, Bootstrap, Tailwind CSS
Backend: Node.js, Express.js, REST API
Databases: MongoDB, MySQL
Tools & Workflow: Git, GitHub, GitLab, Bitbucket, SVN, Webpack, Vite, Gulp, Grunt, ESLint, Prettier, Postman, Figma, Notion, Slack, Jira, Confluence, Trello, Agile/Scrum, Performance Optimization, Clean Code & Refactoring
WORK EXPERIENCE
InsulaLab
Frontend Developer | I
04.2024 - Present
Pistolo.com

Project #2: P
Implemented a complex CSS-only CTA animation for the main hero banner, perfectly synchronized with
background video, increasing primary CTA click-through rate by 15.6% compared to the previous static version.

Replaced JS-heavy animation implementations with optimized CSS keyframes and transitions, improving
animation smoothness (FPS) by 29.3% and reducing animation-related main-thread blocking time by 24.1% on
mid-range devices.

Tuned layout and visual timing to preserve a strong “wow-effect” while maintaining fast load, keeping LCP on the
homepage under 2.2s and improving mobile performance scores in Lighthouse to 90+.

Worked closely with design and product teams to iterate on micro-interactions around the hero section, increasing
average time-on-hero and scroll-through to the next section by 17.4%.

Technologies: JavaScript, HTML5, CSS3/SCSS (Advanced Animations, Keyframes
i l s .com
B gC a h
Project #1: B
Designed a clip-path + calc()-based technique for complex shield- and drop-shaped UI components, replacing
heavy SVG/PNG masks and reducing render time on element-dense screens by 25.2%.

Standardized this approach across the project and other internal products, cutting implementation time for new
“non-rectangular” card designs by 35.9% and reducing related asset payload by 28.7%.

Coordinated work between Dev, Design, BA and PM under tight deadlines, simplifying non-critical visual details
where possible and reducing sprint spillover by 21.6%, while avoiding overtime for the team.

Led a small frontend team (task planning, reviews, communication with product owners), improving sprint
throughput by 18.8% and ensuring on-time release of the gaming platform with noticeably better UX on low-end
devices.

Technologies: HTML5, CSS3 (Advanced Layouts, clip-path, calc), JavaScript, Jira, Confluence, Agile/Scru
Frontend Developer | n
nisha.co.i

05.2023 - 04.2024
Implemented full RTL support for a multi-page website targeting the Israeli market, adjusting layout, typography,
and navigation patterns to align with right-to-left reading flow.

Refactored components and grid/flex layouts to correctly mirror content and UI controls, eliminating RTL
rendering issues and reducing layout-related bug reports from UAT to 0.

Optimized styles and direction logic to maintain a consistent experience across major browsers and devices,
reducing cross-browser RTL-specific defects by 31.5% during testing.

Delivered a production-ready site that felt native to Hebrew-speaking users, contributing to lower bounce rates
from Israeli traffic (down by 14.2% compared to the early LTR prototype) and positive client feedback.

Technologies: HTML5, CSS3 (RTL-specific layout), JavaScrip

Astound Commerc
Frontend Developer | A
06.2022 - 05.2023
B uilt configurable CMS template modules on SFCC with JSON-based settings (layout, typography, content
direction, colors, borders), reducing time-to-launch for promo landing pages from 3-4 days to ~1 day (≈ 63.2%
faster).

Enabled content managers to assemble pages in a “LEGO-style” editor without code changes, cutting the number
of frontend tickets for minor visual updates by 34.7% over two quarters.

Implemented fully responsive, reusable components that preserved Core Web Vitals under heavy marketing
content, keeping homepage LCP consistently below 2.5s while increasing average number of dynamic blocks per
page by ~19.4%.

Collaborated with marketing and content teams to refine configuration schemas, reducing the average time a non-
technical user needed to build a new campaign layout by 41.8% and lowering layout-related QA issues.

Technologies: Salesforce Commerce Cloud (SFCC), JavaScript, HTML5, CSS3/SCSS, JSO

OTAKOY
Frontend Developer | O
07.2021 - 06.2022
Implemented a fullpage “scrollytelling” architecture where each section occupies 100% of the viewport, turning
the homepage into a step-by-step brand story and increasing scroll depth through key sections by 23.1%.

Built a custom reverse split-screen slider with synchronized but opposite-direction motion, delivering a distinctive
interaction pattern that improved engagement with hero/product blocks by 19.4%.

Optimized scroll and animation logic in vanilla JS to keep interactions jank-free, reducing scroll-related long tasks
by 27.8% and maintaining smooth UX on mid-range mobile devices.

Collaborated with designers to fine-tune timings and transitions, contributing to a 14.6% increase in average time
on homepage and reinforcing the perception of Roshen as a modern, premium brand.

Technologies: HTML5, CSS3, JavaScrip

Universal We
Frontend Developer | U
08.2020 - 07.2021
Delivered a full “design-to-live” implementation: converted a custom UI/UX concept into responsive HTML/CSS
markup and integrated it with the ModX CMS, enabling non-technical staff to manage content independently.

Set up ModX templates, chunks, and dynamic content areas, reducing time for future content updates by 52.7%
compared to direct code edits.

Optimized page structure and assets (images, styles, scripts), cutting average page load time from early prototypes
by 37.9% and improving Lighthouse performance and SEO scores to the 90+ range on key pages.

Ensured pixel-perfect implementation of the brand design, which helped the client launch a distinctive online
presence and start acquiring customers through the website immediately after go-live.

Technologies: ModX, PHP, HTML5, CSS3, JavaScript, jQuer
EDUCATION
LANGUAGES
Ivan Franko National University of Lviv
Upper-Intermediate (2)

English