You will get Consultation: Custom Internal Tools & Admin Panels for .NET Systems
Rising Talent
Rising Talent
Project details
Struggling with compliance gaps or slow development cycles ? I provide expert consultation and development of compliance-ready .NET systems. Leveraging 20+ years non-stop of experience, I help companies build enterprise-grade tools with critical features built-in from day one
Programming Languages
HTML & CSS, JavaScript, ASP.NETCoding Expertise
Performance Optimization, Security, DesignWhat's included
| Service Tiers |
Starter
$10,000
|
Standard
$20,000
|
Advanced
$30,000
|
|---|---|---|---|
| Delivery Time | 10 days | 21 days | 30 days |
Number of Revisions | 2 | 3 | 5 |
Number of Pages | 5 | 10 | 20 |
Design Customization | |||
Content Upload | |||
Responsive Design | |||
Source Code |
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Elena T.
Apr 24, 2026
Full-Stack Developer – Excel to Custom Web App with Dashboard, Roles, Automation & API Integrations
We came to Viacheslav with a messy situation — several years of business logic stored in Excel files, with three people working in the same sheets and constantly overwriting each other’s changes. It was becoming hard to manage and unreliable for daily operations.
Viacheslav helped us turn this into a working web application. Before starting development, he took time to understand how our process actually works and asked a lot of practical questions about how we use the data in real life. The initial discovery was quite fast, but it covered all the important parts and helped structure the system properly.
He then built the solution step by step — starting with the data structure and core logic, then adding user roles, and later the dashboard and tables with calculations. The final result is much more stable than our Excel setup, and the team no longer runs into conflicts when working with the same data.
Now each user has access based on their role, the main dashboard replaces our old summary sheet, and all calculations are handled in one place. We also have validation in place, which reduces mistakes significantly. Everything is self-hosted in AWS cloud, and we have full access to the source code.
Communication was clear and consistent throughout the project. We are planning to continue working with Viacheslav on further improvements and additional features like integrations.
Viacheslav helped us turn this into a working web application. Before starting development, he took time to understand how our process actually works and asked a lot of practical questions about how we use the data in real life. The initial discovery was quite fast, but it covered all the important parts and helped structure the system properly.
He then built the solution step by step — starting with the data structure and core logic, then adding user roles, and later the dashboard and tables with calculations. The final result is much more stable than our Excel setup, and the team no longer runs into conflicts when working with the same data.
Now each user has access based on their role, the main dashboard replaces our old summary sheet, and all calculations are handled in one place. We also have validation in place, which reduces mistakes significantly. Everything is self-hosted in AWS cloud, and we have full access to the source code.
Communication was clear and consistent throughout the project. We are planning to continue working with Viacheslav on further improvements and additional features like integrations.
About Viacheslav
.NET Full Stack | ASP.NET Web Developer | Software Architect | 20+ yrs
Kyiv, Ukraine - 2:03 am local time
I help businesses replace those systems with custom role-based web applications such as CRM, ERP, and SaaS platforms that automate workflows, unify data, and scale with the company.
As a Full Stack Developer and .NET Expert with 20+ years of uninterrupted commercial experience, I design and build business software that fits the real workflow of your company — not the limitations of generic tools.
What usually happens before clients hire a Full Stack Developer like me
• Legacy systems that are impossible to maintain or scale
• Manual workflows consuming hours of team time every day
• Off-the-shelf CRM or ERP tools that almost fit — but not quite
• AI-generated or poorly structured codebases that need to be rebuilt properly
• Developers who disappear mid-project or deliver code nobody can maintain
As a Full Stack Developer and .NET Expert, I’ve solved these problems many times by rebuilding architecture, simplifying systems, and creating reliable software platforms companies can depend on.
What I build as a Full Stack Developer
• Custom CRM development for sales pipelines and customer management
• ERP systems that unify operations, finance, and internal processes
• SaaS platforms for startups and new digital products
• Workflow automation to eliminate manual work
• Admin panels and dashboards for internal teams
• API integrations with external services
• Legacy system modernization
As a Full Stack Developer, I build complete systems using:
C# • ASP.NET • SQL Server • PostgreSQL • REST APIs
Cloud deployment on AWS and Azure
What you get working with a .NET Expert
• Clean and maintainable architecture
• Secure backend and role-based access control
• Audit trails and business-grade data security
• Scalable systems designed for long-term growth
Most importantly, you work directly with a Full Stack Developer who writes the code personally, manages deployment, and communicates clearly throughout the project.
No vendor lock-in. White label.
You fully own the code and infrastructure.
If you need a custom CRM, ERP system, SaaS platform, or internal business tool, feel free to invite me to your project.
I’m happy to discuss the architecture and help plan the right solution before development begins.
Skills: .NET Full Stack, Web Developer, Software Architect, C#, ASP.NET, SQL Server, PostgreSQL, Frontend & Backend Development, Web development, Web developer, API integration, CRUD applications, Workflow automation, Admin dashboards, Reports & Analytics, Cloud deployment, Custom Web App, Low-Code / Rapid Application Development (.NET & Web), AI-Assisted Development
Core Expertise & Technologies:
CRM Development, ERP Development, Portal Development, Platform Development, System Development, Dashboard Development, Internal Tools Development, Database Development, CMS Development, Custom CRM, Custom Web Application, Web Application, Internal Tools, Business Process Automation, Integrations, Inventory/Accounting Software, MVP Development, Website Development, Fast Prototyping, Prototype Development, Rapid Application Development, From Scratch, Pilot, Initial, Early stage, Modernization, Custom Development, Not a Generic Solution, White label, No vendor lock-in, In house, Greenfield, Azure, AWS, Workflow Automation, Automation, API Integrations, Legacy, Migration, JSON API Integration, RESTful API Development, Excel Integration, Google Sheets Integration, C#/.NET, SQL, PostgreSQL, MS SQL, Security, Roles, User Roles, Notifications, Permissions, Validation, Pagination, Dashboard, Admin Panel, Administration, Admin Dashboard Builder, Web Forms, Notifications, HTML, CSS, JavaScript, B2B, B2C, Subscriptions, Stripe, Lovable, Frontend, Backend, AI, Artificial Intelligence, Authorization, Authentication, OAuth2, NoSQL, WordPress, MAUI, VB6, VBA, VB.NET, Mobile Development, Android, Algorithms, Data Structures, Engines, Copilot
Steps for completing your project
After purchasing the project, send requirements so Viacheslav can start the project.
Delivery time starts when Viacheslav receives requirements from you.
Viacheslav works on your project following the steps below.
Revisions may occur after the delivery date.
Direct Message | Discovery & Scope Definition Call
Custom compliance-ready .NET systems. Built-in audit trails, encryption & roles & notifications and much more. Full ownership, no vendor lock-in. Fast & reliable