📌 Front-end Engineer, Software Engineer (10+ years, TypeScript, React, Next, Astro, Angular, Stencil, Vue)
🇺🇸 New York (Open to Relocation)
🟢 Green Card Holder 🔗 LinkedIn | 🔗 GitHub | ✉️ leonid.hastings@gmail.com | 📞 +1-215-987-7259

RE Partners
February 2024 - Present | 2 yrs | New York

Working for one of the oldest, largest financial institutions in the world.

Project: internal tools. Team: Large team, with every member as individual contributor, but all reporting to 1 manager. Technologies: Figma, TypeScript, React, Angular, Vitest, Playwright, Vite.

• Took ownership of the list of projects assigned to me.
• Coordinated with product owners, designers, devs, solving multiple issues while project development.
• Developed Front-end part, selected best tools for every task.
• Interacted with end users, analyzed their pain points, provided them with solutions.
• Analyzed other projects, wrote issues reports and specs for improvement. Coordinated with assigned project leader.
• Showed best practices and new tools for development on education conferences.

Sandals Resorts
July 2020 - February 2024 | 3 yrs 8 mos | New York

Sandals Resorts own and operate 30+ resorts in the Caribbean providing luxury vacation services. In the peak times (August, February) website attracts around 1500 visitors daily.

Project: Design system consumed by every app at Sandals Resorts. sandals.com customer engaging website. Team: 2 PO, 5 Designers, 5 Front-end, 3 Back-end, 3 QA. Technologies: Figma, TypeScript, React, Next, Vitest, Playwright, Vite, Storybook.

• Developed design system from scratch consumed by every app at Sandals Resorts, reducing development and maintenance time and ensuring brand consistency in each app.
• Selected tools for design system: React, TypeScript, Tailwind, Vitest, Playwright, Storybook.
• Set up project structure, conventions, linters.
• Adopted TailwindCss, reducing development time and bundle size significantly.
• Analyzed design system bug reports, issues. Wrote docs, delivered updates. Led QA sessions.
• Selected Next.js SSR framework for new version of sandals.com 300 pages website.
• Interacted closely with design team on A/B testing stage, increasing booking conversion rate by 46%.
• Improved accessibility, Seo, by installing automated code checkers, analyzing Lighthouse audits results.

ADP
February 2017 - July 2020 | 3 yrs 6 mos | New York

ADP provides accounting services.

Project: retirement dashboards. Team: 2 PO, 4 Designers, 4 Front-end, other Back-end teams, 2 QA.
Technologies: Figma, TypeScript, Stencil, React, Jest, Playwright, Webpack, Storybook.

• Developed components with Stencil framework and ADP design system. Designed data-structures for them. Covered unit testing (Jest), end-to-end testing (Playwright). Documented with Storybook.
• Solved design system bugs by reporting, joining QA sessions and making workarounds as a last resort.
• Analyzed and improved other modules. (Boyscout rule)
• Researched and analyzed solutions for challenges. Example: Ag-Grid vs custom table wrapper with encapsulated functionality.

Fortune-IT
February 2015 - February 2017 | 2 yrs 1 mo | New York

Fortune-IT is a digital agency providing digital transformation services.

Project: multiple websites.
Team: 2 Designers, 2 Front-end, 2 Back-end, 1 main leader.
Technologies: Figma, Html, Css, Scss, JavaScript, Vue, Webpack, Wordpress, Magento, Joomla.

• Selected optimal frameworks and CMS for projects.
• Transformed designs into responsive websites.
• Customized CMS functionality (WordPress, Magento, Joomla).
• Improved SEO based on Lighthouse audits.

Admiral Makarov National University of Shipbuilding, Ukraine, 2011 - 2015

Salesforce, New York, 2025

Step IT-Academy, Ukraine, 2017

✅ Languages: TypeScript, JavaScript
✅ Frameworks: React, Preact, Angular, Vue, Svelte, Stencil
✅ Meta-Frameworks: Next, Astro
✅ State Managers: Redux, MobX, Zustand
✅ API: Axios, ReactQuery, Rest, GraphQL
✅ Styling: TailwindCSS, SCSS, CSS-in-JS, ModuleCSS
✅ Bundlers: Vite, Webpack
✅ Testing: Vitest, Jest, Testing Library, Playwright, Storybook
✅ CMS: Strapi, Contentful, Wordpress
✅ UI/UX Design: Figma, Sketch, Photoshop, Illustrator
✅ Back-End: Node.js, Express, Nginx, MongoDB, MySQL, Postgres, Java, PHP
✅ Performance & Architecture: Lighthouse, Lazy Loading, Code Splitting, Micro-frontend Architecture
✅ Dev Tools: Git, Husky, ESLint, Prettier, CI/CD (GitHub Actions)
✅ Accessibility & SEO: WCAG, ARIA, Lighthouse, Semantic HTML

Visit website
Technologies: TypeScript, Preact, Astro, React Formik & Yup, Tailwind, Scss, Strapi Headless Cms.
2024

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Technologies: TypeScript, Preact, Astro, React Formik & Yup, Tailwind, Scss, Strapi Headless Cms.
2023

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Technologies: TypeScript, React, Next, React Formik & Yup, Module Css, Scss, Strapi Headless Cms.
2022