Summary
Overview
Work History
Education
Skills
Languages
Certification
Interests
Timeline
Fishing, Fitness, Football
Generic
Costache Iulian Cosmin

Costache Iulian Cosmin

Front-End Developer
Bucuresti

Summary

Hey, I'm Iulian — a front-end developer with over 3 years of experience working with React, TypeScript, and overall 8+ years of experience in modern web technologies. I love turning ideas and designs into fast, clean, intuitive interfaces that people actually enjoy using.

While I’m big on code quality, functional programming, and performance optimization, I’m also someone who really values collaboration. Whether it’s working with designers, product managers, or back-end devs, I believe the best results come from clear communication and solid teamwork.

I’ve built everything from dashboards to immersive WebAR experiences using tools like three.js and A-Frame — but no matter the tech, I always aim for maintainable, scalable solutions that make sense long-term.

Overview

14
14
years of professional experience
3
3
years of post-secondary education
1
1
Certificate

Work History

Front-End React Developer

Hogarth Worldwide
08.2023 - Current
  • As a Front-End React Developer, I specialize in designing and developing high-performance, scalable Single Page Applications (SPAs) using React.js, TypeScript, and modern functional programming paradigms in JavaScript.
  • 🔹 Core Responsibilities & Skills:
  • Built and optimized front-end architectures, applying functional programming with React functional components, React Hooks, and Zustand/Redux for clean and scalable state management.
  • Developed immersive, highly interactive user interfaces with strong UI/UX alignment by translating complex Figma designs into reusable and pixel-perfect components.
  • Ensured performance excellence using techniques like code-splitting, memoization, lazy loading, and structured API interactions (Axios, Fetch) to enhance responsiveness and user engagement.
  • Integrated WebAR and 3D experiences using three.js, A-Frame, and 8th Wall, bringing innovation to browser-based interfaces.
  • Worked in agile teams, conducting peer code reviews, collaborating with back-end developers, and maintaining robust CI/CD pipelines.
  • Participated in architectural discussions and technical planning to shape future-ready, modular front-end systems.
  • 🔹 Key Technologies:
  • React.js, TypeScript, Redux, Zustand, JavaScript (ES6+), React Router, React Hooks, Git, Figma, WebAR, three.js, A-Frame, 8th Wall, CI/CD, REST APIs, Functional Programming, Agile, Performance Optimization, SPA Development, UI/UX, GitHub/Source Control

Front-End Web Developer

OgilvyOne Worldwide
05.2021 - 08.2023

Delivering high-performance, accessible web experiences by translating complex design concepts into robust, scalable, and user-focused digital products.

  • Responsive UI Implementation: Transformed intricate design comps and wireframes into responsive, pixel-perfect web pages using HTML5, CSS3, SASS, and JavaScript—balancing brand fidelity with exceptional usability across all devices and browsers.
  • Performance Optimization: Proactively identified and resolved front-end bugs, improving load times and maintaining smooth, cross-browser performance for all users.
  • Live Support & Launch Readiness: Provided hands-on technical support during go-lives and site launches, quickly troubleshooting issues and guiding clients and stakeholders to ensure successful rollouts.
  • Project Scoping & Planning: Collaborated with project managers to estimate work scope, define technical requirements, and align front-end deliverables with project timelines for efficient, on-budget completion.
  • Tech Innovation & Best Practices: Stayed ahead of industry trends by adopting new technologies and frameworks, implementing best-practice coding standards, and introducing modern techniques that enhanced both project outcomes and team productivity.
  • Accessibility & Compliance: Led accessibility audits and applied ADA/WCAG guidelines to ensure fully inclusive, user-friendly experiences for all audiences.
  • Collaboration & UI Excellence: Worked hand-in-hand with in-house designers to craft visually compelling, user-centric interfaces that consistently aligned with brand guidelines and client expectations.
  • Site Redesign Leadership: Managed end-to-end site redesigns—enhancing navigation, visual identity, and SEO best practices to boost user engagement and site discoverability.

Key Skills:
Responsive Design, HTML5, CSS3, SASS, JavaScript, Accessibility (ADA/WCAG), Performance Optimization, Cross-Browser Testing, UI/UX Collaboration, Technical Support, SEO, Agile Workflows, Code Reviews

Drupal Front-End Developer

Hogarth Worldwide
01.2020 - 05.2021

As a Front-End Developer working on Drupal 8, 9, and 10 platforms, I focused on building scalable, accessible, and visually polished web solutions. From custom modules to theme development and content modeling, I delivered consistent, high-quality work tailored to client needs.

🔹 Highlights:
Developed and maintained robust Drupal platforms, creating custom modules and integrating third-party APIs to extend functionality.

Converted UI designs (PSD, Adobe XD) into responsive, mobile-first themes, ensuring WCAG accessibility, cross-browser support, and consistent branding.

Worked closely with content strategists and designers to configure content types, Views, Paragraphs, and editorial workflows.

Applied modern CSS/SASS with BEM methodology to ensure modular, maintainable styles.

Collaborated using Git, conducted code reviews, and led CI/CD deployments via Acquia Cloud and custom pipelines.

Focused on performance optimization, caching, security patching, and ensuring stable, maintainable releases.

🔹 Tech & Tools:
Drupal 8/9/10, PHP, Twig, JavaScript, jQuery, SASS, BEM, Views, Paragraphs, Git, SourceTree, Acquia Cloud, CI/CD, Web Accessibility, REST API Integration

Web Developer

Hogarth Worldwide
01.2017 - 12.2019

Interactive Web Banner Developer
Specializing in data-driven, high-impact digital ad creative

  • Dynamic Animation & Web Technologies: Crafted engaging HTML5 banners and rich media ads using JavaScript and GreenSock (GSAP) for smooth, attention-grabbing animations on desktop and mobile.
  • Ad Platform Expertise: Designed, built and deployed campaigns in DoubleClick Studio, Sizmek, Flashtalking and Weborama—utilizing dynamic creative, audience retargeting and real-time analytics to maximize ROI.
  • Creative Asset Production: Developed and animated visual assets in Adobe Animate, Photoshop and Illustrator; seamlessly translated marketing concepts into pixel-perfect ad units aligned with brand guidelines.
  • Google Web Designer Proficiency: Engineered responsive, HTML5-rich media ads optimized for diverse platforms and screen sizes; implemented custom event tracking and advanced exit behaviors for detailed performance insights.
  • Quality Assurance & Optimization: Executed rigorous cross-browser and device tests; fine-tuned asset weight and preload strategies to ensure rapid ad rendering and uninterrupted playback.
  • Collaborative Campaign Delivery: Partnered with art directors, copywriters and media planners to align ad creative with campaign KPIs—ensuring on-time delivery and consistent messaging across channels.
  • Workflow Management: Streamlined asset versioning and approvals through Git-based processes, enabling quick iterations and minimized deployment risk.

Digital Print Operator

Infodesign Group
07.2011 - 12.2016

Digital Print Production Specialist
Optimizing workflows, empowering teams, and delivering top-quality print solutions

  • Workflow Optimization: Streamlined end-to-end digital print processes—boosting production throughput and reducing turnaround times without sacrificing quality.
  • Continuous Learning & Innovation: Kept abreast of emerging digital printing technologies and industry best practices, applying new insights to improve output and efficiency.
  • Quality & Timely Delivery: Consistently delivered precise, high-resolution prints on tight schedules—ensuring client expectations were met or exceeded every time.
  • Technical Sales Support: Partnered with the sales team to provide expert guidance on print capabilities and limitations, helping craft realistic proposals and secure new business.
  • Training & Mentorship: Onboarded and coached new technicians on digital print equipment operation, maintenance best practices, and troubleshooting—accelerating ramp-up time and reducing errors.
  • Prepress Collaboration: Liaised with design teams to verify file readiness and optimize prepress workflows, guaranteeing flawless print reproduction from digital files.
  • Materials & Finishing Consultation: Advised clients on substrate selection and finishing techniques (lamination, embossing, cuts), enhancing final product aesthetics and durability.

Passionate about leveraging the latest print technologies and collaborative processes to deliver exceptional results.

Education

Baccalaureate - Digital Media

Colegiul Tehnic "Media"
Bucuresti
04.2001 -

Bachelor of Science - Management

Universitatea Hyperion
Bucuresti
06.2020 - 07.2023

Skills

React

Languages

Romana
Native language
Engleza
Proficient
C2

Certification

Acquia Certified Site Builder

Interests

Passionate about exploring emerging technologies—from modern JavaScript frameworks and WebAR/3D libraries to cloud services and DevOps practices I continually experiment with new tools and methodologies to stay ahead of industry trends and drive innovative solutions

Timeline

Front-End React Developer

Hogarth Worldwide
08.2023 - Current

Front-End Web Developer

OgilvyOne Worldwide
05.2021 - 08.2023

Bachelor of Science - Management

Universitatea Hyperion
06.2020 - 07.2023

Drupal Front-End Developer

Hogarth Worldwide
01.2020 - 05.2021

Web Developer

Hogarth Worldwide
01.2017 - 12.2019

Digital Print Operator

Infodesign Group
07.2011 - 12.2016

Baccalaureate - Digital Media

Colegiul Tehnic "Media"
04.2001 -

Fishing, Fitness, Football

  • Sport Fishing: Avid angler who enjoys the strategy and relaxation of freshwater and riverbank trips.
  • Fitness & Gym Workouts: Regular weightlifting and cardio sessions to build strength, endurance, and resilience.
  • Team Football: Weekly five-a-side matches that sharpen teamwork, communication, and quick decision-making.
Costache Iulian CosminFront-End Developer