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You will get High-Converting AI SaaS with React & Next.js

Olga L.Status: Offline
Olga L.
5.0
Top Rated
Preview image

Let a pro handle the details

Buy Web Application Programming services from Olga, priced and ready to go.
Olga L.Status: Offline
Olga L.
5.0
Top Rated
Preview image

Let a pro handle the details

Buy Web Application Programming services from Olga, priced and ready to go.

Project details

We can arrange a quick call to discuss the requirements/tasks/deadlines/budget etc. CONTACT ME FIRST PLEASE, DM.
React.js & Next.js Developer specializing in scalable AI SaaS applications, AI web apps, modern frontend development, and high-performance full stack platforms. I build responsive, SEO-optimized, conversion-focused web applications using React.js, Next.js, TypeScript, JavaScript, Node.js, Express.js, MongoDB, PostgreSQL, Tailwind CSS, Redux, REST API, GraphQL, and cloud deployment solutions. Experienced in AI SaaS development, OpenAI API integration, ChatGPT API integration, AI chatbot development, Generative AI, LLM integration, AI automation, AI assistant platforms, SaaS MVP development, startup web applications, custom dashboards, admin panels, authentication systems, API integration, scalable architecture, and modern UI/UX design. Expert in building fast-loading, secure, production-ready, pixel-perfect, user-friendly, and scalable applications for startups, SaaS businesses, and growing companies. Skilled in frontend development, backend development, full stack development, responsive design, modern web app development, enterprise SaaS solutions, AI-powered platforms.
Programming Languages
PHP, HTML & CSS, JavaScript
Coding Expertise
PSD to HTML, Performance Optimization, Design

What's included $50

These options are included with the project scope.

$50
  • Delivery Time 2 days
  • Number of Revisions 0
  • Number of Pages 1
5.0
13 reviews
100% Complete
(13)
1% Complete
(0)
1% Complete
(0)
1% Complete
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1% Complete
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CE

Can E.
5.00
Apr 14, 2026
SaaS with AI Features | React.js Next.js Node.js Olga is very kind and responsible person. He is also great developer with lots of insights. Thank you very much Olga for your time and support.

DK

Dimitris K.
5.00
Apr 6, 2026
B2B Wellbeing Platform Front End Development Olga is a skilled and structured frontend developer who delivered consistently across a complex, evolving project. She showed initiative, communicated professionally, and handled coordination challenges with maturity. Overall a reliable collaborator I'd work with again.

YH

Yaniv H.
5.00
Feb 12, 2026
Full Stack Developer React TypeScript Node.js Nest I highly recommend Olga for web application development projects. She demonstrated strong technical skills, clear communication, and a deep understanding of both frontend and backend architecture throughout the entire process.

Olga was able to translate business requirements into a well-structured, scalable web application, while maintaining clean code and best practices. She was proactive in suggesting improvements, responsive to feedback, and consistently delivered on time.

What stood out most was her ability to troubleshoot complex issues quickly and provide practical, well-thought-out solutions. The final product was stable, efficient, and exceeded expectations.

I would gladly work with Olga again on future projects and confidently recommend her to anyone looking for a reliable and skilled web developer.

YH

Yaniv H.
5.00
Jan 1, 2026
Full Stack Developer for E2E Product Development Olga is the best, every task is done with in time and high quality.

KS

Kirit S.
5.00
Nov 12, 2025
To estimate timeline and costs Olga, was great to work with. They have a solid understanding of Supabase and backend best practices. Communication was clear, and they delivered quickly and efficiently. They helped set up authentication, API routes, and database logic efficiently. Would definitely hire again for future Supabase or backend work.
Olga L.Status: Offline

About Olga

Olga L.Status: Offline
Front end Developer | Full stack developer React |AI Chatbot Developer
100% Job Success
5.0  (13 reviews)
Odessa, Ukraine - 12:10 pm local time
I’m Olga — a Front end Developer, AI Chatbot Developer, and Full stack developer React engineer with 7+ years of experience building scalable SaaS platforms, AI-driven applications, and high-performance digital products. I’ve delivered 40+ successful projects across Fintech, SaaS, E-commerce, Healthcare, Education, and Travel, improving user engagement, performance, and conversion rates through clean architecture and product-focused engineering. Across my career, I’ve worked on systems serving thousands of active users, delivered 60+ frontend modules and contributed to measurable business growth such as +35% performance improvements, +60% engagement growth, and -25% bounce rate reduction through frontend optimization and UX improvements.

My focus is modern Web Developer work and advanced React Developer solutions using React and scalable frontend systems. As a Front end Developer, I specialize in building fast, responsive, and accessible interfaces optimized for Core Web Vitals and real user performance. I’ve delivered 50+ production-ready UI systems and dashboards, including SaaS admin panels, analytics platforms, and customer-facing applications, consistently improving page speed by up to 55% through optimization and architecture refactoring.

In my React Developer work, I build reusable component systems, scalable UI architectures, and production-grade applications using React and Next.js. I’ve contributed to projects where I acted as a Front end Developer and AI Chatbot Developer, improving performance by up to 40%, increasing engagement by 65%, and reducing bounce rates by 30% through frontend optimization and UX improvements. I’ve also built and maintained 100+ reusable React components used across multiple SaaS platforms, ensuring consistency, scalability, and maintainability.

Full product ownership is a key part of my work. As a Full stack developer React, I design complete systems — from frontend UI to backend APIs and database architecture — ensuring scalability, maintainability, and long-term product growth. I’ve worked as a Front end Developer and Full stack developer React on SaaS platforms serving 10K+ active users, delivering systems with subscription billing, dashboards, real-time analytics, and multi-tenant architecture**. I also integrate AI Chatbot Developer capabilities into these systems to enhance automation and user experience.

Backend systems are built with Python. My Python Developer experience includes API development, automation, and data pipelines. Combined with a Machine Learning and Data Scientist background, I build intelligent systems using predictive models, LLM integrations, and data-driven decision engines that improve product outcomes. I’ve worked on projects where automation reduced manual workflows by up to 70%, improving operational efficiency and scalability.

As an AI Chatbot Developer, I integrate OpenAI APIs, automation workflows, and intelligent features into production systems. My Machine Learning expertise helps turn raw data into actionable insights, powering smarter user experiences and business logic. I’ve built AI-powered chat systems, document assistants, and workflow automation tools that improved customer response time by up to 60% and increased user retention by 30%.

I also work as a WordPress Developer and Full stack developer React, building custom themes, plugins, and CMS-based platforms for content-driven businesses. These systems are often integrated into larger ecosystems built with React and modern APIs. I’ve delivered 20+ WordPress projects, including redesigns that reduced bounce rates by 35% and improved SEO traffic by 60% through performance optimization and UX restructuring.

For monetization, I specialize in Stripe integrations — including subscriptions, SaaS billing systems, marketplaces, and secure checkout flows. This is a critical part of many systems I build as a Full stack developer React and Front end Developer, especially in SaaS and subscription-based products. I’ve implemented Stripe systems that improved conversion rates by up to 70% in optimized funnels.

Across all projects, whether frontend interfaces, backend systems, or AI-powered features, my goal is consistent: clean architecture, scalable systems, and measurable business impact. As an AI Chatbot Developer work across React, Python, Machine Learning, Stripe, React Native, and WordPress to deliver complete digital products that scale.

If you're looking for a Front end Developer who thinks like an AI Chatbot Developer, builds like a Full stack developer React, and uses Supabase to move fast without breaking things, let's connect and build something exceptional together.

Olga | Front end Developer · AI Chatbot Developer · Full stack developer React · Supabase

Steps for completing your project

After purchasing the project, send requirements so Olga can start the project.

Delivery time starts when Olga receives requirements from you.

Olga works on your project following the steps below.

Revisions may occur after the delivery date.

Quick chat/call to discuss project

We can arrange a quick call to discuss the requirements/tasks/deadlines/budget etc

Review the work, release payment, and leave feedback to Olga.