You will get Full Stack Developer | Full Stack Web Developer | React Developer
Rising Talent
Project details
I represent a custom software development company founded in Ukraine, with our team of ~80 engineers operating from hubs in Estonia and Poland.
Whether you need a dedicated React Developer to build complex apps, a versatile Wordpress developer for smaller sites, or a highly skilled Full Stack Web Developer to design your architecture, we have the exact talent you need.
Here is why you should partner with us:
1) Certified Quality: We operate under strict ISO 27001 and ISO 9001 certifications, ensuring top-tier cybersecurity, project management, and quality assurance.
2) AI-Accelerated Speed: We utilize AI-assisted coding and automated testing tools, delivering your project significantly faster than traditional manual development.
3) Flexible & Cost-Effective: We adapt to your business by offering flexible outstaffing, outsourcing, and recruitment services. Our transparent rates range from $35 to $45 per hour for strong middle and senior experts.
If you want a reliable Full Stack Developer to seamlessly join your team or build your product from scratch, we are ready to help.
Whether you need a dedicated React Developer to build complex apps, a versatile Wordpress developer for smaller sites, or a highly skilled Full Stack Web Developer to design your architecture, we have the exact talent you need.
Here is why you should partner with us:
1) Certified Quality: We operate under strict ISO 27001 and ISO 9001 certifications, ensuring top-tier cybersecurity, project management, and quality assurance.
2) AI-Accelerated Speed: We utilize AI-assisted coding and automated testing tools, delivering your project significantly faster than traditional manual development.
3) Flexible & Cost-Effective: We adapt to your business by offering flexible outstaffing, outsourcing, and recruitment services. Our transparent rates range from $35 to $45 per hour for strong middle and senior experts.
If you want a reliable Full Stack Developer to seamlessly join your team or build your product from scratch, we are ready to help.
Programming Languages
PHP, Python, Ruby/Ruby on RailsCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included $20,000
These options are included with the project scope.
$20,000
- Delivery Time 45 days
- Number of Revisions 0
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AT
Artem T.
May 12, 2026
Full Stack Developer Needed for Mobile Application Development
Working with Alina and her team was an enjoyable experience. They met every requirement and maintained excellent communication throughout the process. They deliver high-quality work with impressive speed. Truly a team of professionals.
AW
Alan W.
Dec 1, 2021
Keyhelpa's architecture and work scope development
Top service and quality of work.
AW
Alan W.
Oct 25, 2021
Freelancer platform for agents and helpa's
Absolutely professionals
AN
Ariel N.
Aug 17, 2021
MVP - PM and QA
Alina was great and supportive. Building the MVP she provided the exact skills needed in order to make sure we don’t have lose ends between the design and execution. Great great job!
ON
Oleg N.
Apr 18, 2021
1 Senior Backend, 1 Senior Frontend & 1 react native needed
Thanks for our fruitful collaboration, it is a challenging project however Hygge software team handled very complex tasks and was always responsive during the work.
About Alina
Full Stack Developer React Developer Mobile App Developer Web
100%
Job Success
Kharkiv, Ukraine - 11:40 am local time
With 180+ successful projects and 20,000+ development hours, I specialize in complex Web and Mobile Application development, AI integrations, and cloud architecture. As a dedicated Full Stack Developer and Python Full Stack Developer, I help businesses automate workflows, optimize performance, and scale products using React, Node.js, Python, and AWS. Whether you need a skilled react developer or a versatile wordpress developer, I bring the technical expertise to deliver reliable systems.
🏆 Web Developer & Full Stack Developer Solutions:
✔️ 9+ years of experience as a Full Stack Developer building scalable web platforms, SaaS products, and AI-driven applications.
✔️ 180+ high-performance projects across eCommerce, SaaS, healthcare, fintech, and enterprise systems delivered as a Full Stack Developer AI specialist.
✔️ 20,000+ engineering hours as a Full Stack Developer, software engineer, and AI integrator.
✔️ Global experience across 40+ countries including the US, UK, Western Europe, and Australia.
✔️ Development speed increased by 60–70% using AI-assisted engineering workflows.
✔️ Backend and database optimization improving performance by up to 60%.
✔️ AI automation systems reducing manual operational work by up to 85%.
✔️ Cloud infrastructure improvements enabling 45% more concurrent users with reduced AWS costs.
📌 AI Systems & Automation:
🔹 Custom LLM and RAG architectures built with Python, LangChain, and vector databases by a Python Full Stack Developer.
🔹 AI chatbots and automation agents improving operational efficiency for SaaS and enterprise systems, delivered by a Full Stack Developer AI.
🔹 AI-assisted QA workflows reducing manual testing costs by 70%.
🔹 Model-agnostic LLM routing using OpenAI, Claude, and Gemini.
📌 Custom Web Development:
🔹 SaaS platforms built with Next.js, React, Node.js, and NestJS by an expert react developer and Full Stack Developer.
🔹 Secure web applications designed by an experienced web developer following ISO security standards.
🔹 Rapid MVP development using AI-first engineering approaches.
🔹 Custom CMS and scalable platforms implemented by a skilled wordpress developer.
📌 Backend Architecture & Cloud Infrastructure:
🔹 High-performance cloud architecture using AWS, Docker, and modern DevOps practices.
🔹 Database optimization with PostgreSQL and Supabase improving query speeds by 60%.
🔹 Microservices and CI/CD pipelines increasing system scalability.
🔹 Automated billing and internal automation systems built by a Python Full Stack Developer.
📌 Mobile & Cross-Platform Applications:
🔹 Cross-platform mobile applications using React Native and Flutter.
🔹 Backend-to-mobile data synchronization reducing latency and improving UX.
🔹 AI-powered recommendations and secure payment integrations.
📌 Scalable Architecture & System Optimization:
🔹 High-availability cloud infrastructure for scalable applications.
🔹 Advanced dashboards and admin panels using React, Tailwind, and modern UI frameworks.
🔹 Server-side rendering and caching strategies improving performance and scalability.
✅ 60–70% faster development through AI-assisted engineering workflows.
✅ ISO 9001 & ISO 27001 aligned development standards.
✅ 30% lower server costs through optimized backend architecture.
✅ Advanced AI integrations (GPT, Claude, LangChain) delivered by a Full Stack Developer AI.
✅ Rapid MVP delivery in 2–3 months by an experienced Full Stack Developer, react developer, and web developer.
Looking for a Full Stack Developer | Full Stack Developer AI | Python Full Stack Developer who can design scalable systems, build reliable architecture, and turn ideas into production-ready products?
Let’s connect! ☎️
22.06.2026
Steps for completing your project
After purchasing the project, send requirements so Alina can start the project.
Delivery time starts when Alina receives requirements from you.
Alina works on your project following the steps below.
Revisions may occur after the delivery date.
Discovery & Pre-Sale
We begin by signing an NDA, gathering your specific requirements, and designing a clear technical blueprint.
Estimation & Contracting
You receive a free three-point estimate detailing optimistic, average, and pessimistic timelines before we finalize the Statement of Work.