You will get a high-performance React/Next.js application for your business needs.
Project details
You will get a high-performance, scalable React/Next.js application tailored to your business needs. With extensive experience in TypeScript, GraphQL, REST APIs, and modern front-end frameworks, I have delivered projects for multiple industries, including e-commerce, crypto, and enterprise platforms. I focus on clean, maintainable code, fast load times, and seamless user experiences, ensuring your application is both efficient and future-proof. Every project I deliver is fully customized, high-quality, and aligned with your goals.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Localization, Performance OptimizationWhat's included
| Service Tiers |
Starter
$20
|
Standard
$100
|
Advanced
$300
|
|---|---|---|---|
| Delivery Time | 2 days | 7 days | 14 days |
Number of Revisions | 2 | 5 | Unlimited |
Number of Pages | 1 | 1 | 10 |
Design Customization | - | ||
Content Upload | - | ||
Responsive Design | - | ||
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$20 - $100
Additional Revision
+$10
Additional Page
(+ 2 Days)
+$30About Constantin
Senior Frontend Engineer | React, TypeScript, Next.js Expert
Chisinau, Moldova - 6:04 am local time
I specialize in building robust, scalable, and user-friendly web applications using modern front-end technologies. With hands-on experience in React, Next.js, TypeScript, and complex integrations, I deliver solutions that combine performance, maintainability, and great UX.
🌟 What I Bring to Your Project:
✅ Proven experience delivering high-quality software on time
✅ Expertise in modern front-end frameworks and architecture
✅ Strong full-stack understanding for end-to-end solutions
✅ Clean, maintainable code following best practices
✅ Problem-solving skills and attention to detail
🛠️ Core Skills & Technologies:
💻 Frontend: React.js, Next.js, TypeScript, JavaScript, Zustand, Redux, Material UI, SASS, ShadCN
⚡ Backend: Node.js, GraphQL, Apollo Client, Laravel, Supabase
🛠️ Integrations & Tools: Adyen, SAP CC, Amazon Cognito, Contentful, Vercel, Localazy
🧪 Testing & QA: Jest, React Testing Library, Cypress, Playwright, Selenium
💼 Professional Experience:
Software Development Engineer II | ASSIST Software | Apr 2021 – Present
✅ Develop complex applications with TypeScript, React.js, Next.js, Styled Components, Zustand, and other modern tools
✅ Collaborate with stakeholders to ensure projects align with market needs and achieve successful ongoing operation
✅ Lead integration of various modules to streamline workflows and enhance functionality
✅ Mentor colleagues and participate in code reviews → improving team skills, code quality, and best practices adherence
✅ Continuously optimize applications to improve Lighthouse scores and overall performance
🎓 Education:
MSc in Software & Service Architecture | Eötvös Loránd University, Budapest | 2023
BSc in Computer Science | University “Ștefan cel Mare” of Suceava | 2021
📜 Certifications: Cambridge English: First (FCE)
🤝 Why Work With Me:
💡 Full-Stack Expertise: I bridge front-end and back-end seamlessly
🎯 Client-Focused: I translate requirements into practical, high-quality solutions
🔄 Continuous Improvement: Always learning and applying the latest best practices
🚀 Let’s build something impactful together!
I’m ready to bring your ideas to life with clean, efficient, and scalable software.
Steps for completing your project
After purchasing the project, send requirements so Constantin can start the project.
Delivery time starts when Constantin receives requirements from you.
Constantin works on your project following the steps below.
Revisions may occur after the delivery date.
Client Provides Requirements
You share your project goals, designs, content, and any technical specifications.
Project Planning & Proposal
I review your requirements and provide a detailed plan with milestones, timelines, and deliverables.