You will get a secure custom REST API or third-party integration
Project details
Modern applications rely on fast, secure, and flawless communication between different services. Whether you need to integrate external media platforms into your startup, connect a clinic's database to a secure frontend, or build a blazingly fast custom backend from scratch, I can help.
I specialize in backend development and API integrations with a strong focus on computer networks and security. I write clean, scalable code (utilizing high-performance languages like Go) to ensure your data routes securely and efficiently without bottlenecks.
I specialize in backend development and API integrations with a strong focus on computer networks and security. I write clean, scalable code (utilizing high-performance languages like Go) to ensure your data routes securely and efficiently without bottlenecks.
Programming Languages
JavaScript, ASP.NET, GoCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$150
|
Standard
$300
|
Advanced
$500
|
|---|---|---|---|
| Delivery Time | 3 days | 10 days | 21 days |
Number of Revisions | 1 | 3 | Unlimited |
Design Customization | |||
Content Upload | |||
Responsive Design | |||
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$200 - $750
Additional Revision
+$50
Additional Page
(+ 1 Day)
+$25Frequently asked questions
About Valentyn
Web/Mobile/Desktop Engineer
Uzhgorod, Ukraine - 4:44 am local time
I’ve worked on projects in healthcare, logistics, e-commerce, education, and monitoring platforms, building everything from REST APIs to real-time data dashboards, DICOM integrations, and map-based applications using Leaflet and Angular Materials.
Core Stack
Backend: ASP.NET Core, EF Core, RESTful API, ADO.NET, C#
Frontend: Angular, Vue.js, React.js, TypeScript, JavaScript, RxJS
Mobile: Xamarin Forms
DevOps: Docker, RabbitMQ, Redis, CI/CD, Jenkins, GitHub Actions
Databases: MS SQL Server, PostgreSQL, MongoDB, SQLite
Other tools: Figma, Jira, Bitbucket, Azure, DigitalOcean
Highlights
Built scalable medical platforms with DICOM and eHealth integrations.
Optimised SPA performance with Web Workers and custom RxJS pipelines.
Integrated real-time maps and responsive UI using Leaflet in Angular.
Actively contribute to open-source and take part in coding contests (ICPC, Codeforces, HackerRank).
Wrote multiple custom pipes, design patterns (CQRS, Repository), and covered logic with unit tests.
Education & Certifications
Bachelor’s in Software Engineering, Uzhhorod National University (GPA: 4)
Microsoft Certified: C# Developer
High Performance .NET Core Coding (Udemy)
Business English & IT English Certified
If you're looking for a reliable developer who can take ownership, write clean and scalable code, and communicate clearly, I’d love to help with your next project.
Message me and let’s build something great together!
Steps for completing your project
After purchasing the project, send requirements so Valentyn can start the project.
Delivery time starts when Valentyn receives requirements from you.
Valentyn works on your project following the steps below.
Revisions may occur after the delivery date.
Architecture & Security Planning
Mapping out the data flow, endpoints, and authentication methods to ensure network safety.
Environment Setup
Configuring the database and server environments.