You will get High-Performance Full cycle Development for Your Web or SaaS Application
Project details
š Full-Stack Web & SaaS Development ā Scalable, Secure & High-Performance Solutions
I provide full-cycle development, handling everything from backend architecture and API development to frontend UI and cloud deployment.
ā Backend Development ā ASP.NET Core, Entity Framework, PostgreSQL/MySQL
ā Frontend Development ā Svelte Kit, TypeScript, Tailwind CSS
ā API & Database Architecture ā Secure authentication, role-based access, REST API
ā Cloud & DevOps ā AWS, Azure, Docker, CI/CD
What makes this service unique?
ā FREE QA testing & bug fixing for every project
ā Help with technical specifications & project planning
ā Post-launch support & optimizations
š¹ Get a powerful, scalable, and secure web app tailored to your business needs!
I provide full-cycle development, handling everything from backend architecture and API development to frontend UI and cloud deployment.
ā Backend Development ā ASP.NET Core, Entity Framework, PostgreSQL/MySQL
ā Frontend Development ā Svelte Kit, TypeScript, Tailwind CSS
ā API & Database Architecture ā Secure authentication, role-based access, REST API
ā Cloud & DevOps ā AWS, Azure, Docker, CI/CD
What makes this service unique?
ā FREE QA testing & bug fixing for every project
ā Help with technical specifications & project planning
ā Post-launch support & optimizations
š¹ Get a powerful, scalable, and secure web app tailored to your business needs!
Programming Languages
HTML & CSS, ASP.NET, C#Coding Expertise
Cross Browser & Device Compatibility, Performance OptimizationWhat's included
| Service Tiers |
Starter
$50
|
Standard
$500
|
Advanced
$2,500
|
|---|---|---|---|
| Delivery Time | 2 days | 14 days | 30 days |
Number of Revisions | 3 | 6 | Unlimited |
Design Customization | - | ||
Content Upload | - | - | - |
Responsive Design | - | - | |
Source Code | - |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$100 - $5,000
Additional Revision
+$150
Additional Page
(+ 3 Days)
+$150
Adittional Api endpoint
(+ 3 Days)
+$150
Setting up CI/CD (autodeployment)
(+ 5 Days)
+$800Frequently asked questions
About Oleksii
Full Stack ASP.NET Developer | .NET | C# | Web API | Svelte
Chernivtsi, UkraineĀ - 10:22 am local time
Certified Senior Full-Stack ASP.NET | Svelte | DevOps Engineer
7+ years in software development
šš+ successful projects outside Upwork
ššš% Job Success
Looking for a š¬šš§š¢šØš«-š„ššÆšš„ full-stack engineer who can take your product from concept to launch - including backend, frontend, infrastructure, deployment, and security?
I offer:
ā¬ FREE QA, bug fixing & post-launch support;
ā¬ Full-cycle product development (architecture, planning, coding, deployment, optimization, maintenance);
ā¬ Enterprise-grade API development & third-party integrations;
ā¬ SaaS, E-commerce & custom business systems (scalable, high-load architectures using ASP.NET Core, Web API, and modern frontend frameworks);
ā¬ Real-Time Applications (live dashboards, notifications, WebSocket integrations, automation systems);
ā¬ Linux Server Administration & Infrastructure (Ubuntu, VPS setup, Nginx, reverse proxies, SSL, process management, server hardening);
ā¬ Advanced Networking & Secure Infrastructure (WireGuard VPN deployment, secure tunneling, self-hosted remote access systems, encrypted server environments);
ā¬ DevOps & CI/CD (Docker, Docker Compose, GitHub Actions, Azure DevOps, deployment automation, monitoring, production optimization);
ā¬ Security-First Development (JWT, authentication systems, role-based access, encrypted environments, secure API architecture);
Iām a Full-Stack Developer & Infrastructure Engineer providing šš§š-ššØ-šš§š product delivery ā from š¢ššš šÆšš„š¢šššš¢šØš§ and system architecture to deployment, scaling, and long-term maintenance.
My expertise spans ASP.NET Core, C#, Linux infrastructure, TypeScript, Svelte/SvelteKit, DevOps, and cloud environments. I specialize in building š«šØšš®š¬š, š¬ššš®š«š, and š¦šš¢š§ššš¢š§ššš„š systems that solve real business problems - whether that means launching a SaaS platform, optimizing business automation, deploying secure VPS infrastructure, or engineering custom enterprise tools.
I combine software engineering with infrastructure thinking - meaning I donāt just build apps, I build systems that last.
š Tech Expertise:
ā¬ Backend: ASP.NET Core, ASP.NET Web API, Entity Framework Core, .NET Framework, ASP.NET MVC, Razor Pages, Blazor, Clean Architecture;
ā¬ Frontend: Svelte, SvelteKit, JavaScript, TypeScript, Tailwind CSS, Bootstrap, TanStack Query, REST integrations;
ā¬ Databases: PostgreSQL, SQL Server, MySQL, MongoDB, SQLite, Redis;
ā¬ Linux & Infrastructure: Ubuntu Server, Nginx, VPS deployment, SSL, systemd, reverse proxy, server security, LUKS disk encryption;
ā¬ Networking: WireGuard VPN, secure tunnels, remote access architecture, private networking;
ā¬ DevOps & Cloud: Docker, Docker Compose, GitHub Actions, Azure DevOps, AWS, deployment pipelines, CI/CD automation;
I focus on:
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š If you need someone who can engineer your product, deploy it properly, secure it, and support it long-term - click āššššššā.
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Steps for completing your project
After purchasing the project, send requirements so Oleksii can start the project.
Delivery time starts when Oleksii receives requirements from you.
Oleksii works on your project following the steps below.
Revisions may occur after the delivery date.
Project Discovery & Planning
I review your requirements, clarify details, and help define a clear roadmap for development. If needed, I assist with writing a technical brief.
Backend Development
I develop a scalable and secure backend using ASP.NET Core, setting up REST APIs, authentication, database architecture, and any required integrations.