You will get a custom internal business application tailored to your workflow
Project details
Turn a manual, spreadsheet-driven, or repetitive business process into a secure internal web application tailored to the way your team actually works.
I combine application development with hands-on systems, networking, automation, and security experience. This helps me understand both the business workflow and the infrastructure behind it. Previous solutions include an employee leave planning and management application, a PKI certificate lifecycle automation platform for network devices, and a monitoring and management platform for servers and network equipment.
Depending on the selected package, your solution can include authentication, role-based access, forms, approvals, dashboards, reports, notifications, audit trails, integrations, and deployment support. We will define the exact scope and acceptance criteria before development begins.
Each package covers one clearly defined workflow and the listed number of pages. Additional modules, complex integrations, data migration, mobile applications, hosting costs, and third-party licenses require a separate agreement.
I combine application development with hands-on systems, networking, automation, and security experience. This helps me understand both the business workflow and the infrastructure behind it. Previous solutions include an employee leave planning and management application, a PKI certificate lifecycle automation platform for network devices, and a monitoring and management platform for servers and network equipment.
Depending on the selected package, your solution can include authentication, role-based access, forms, approvals, dashboards, reports, notifications, audit trails, integrations, and deployment support. We will define the exact scope and acceptance criteria before development begins.
Each package covers one clearly defined workflow and the listed number of pages. Additional modules, complex integrations, data migration, mobile applications, hosting costs, and third-party licenses require a separate agreement.
Programming Languages
HTML & CSS, JavaScript, PythonCoding Expertise
Performance Optimization, Security, DesignWhat's included
| Service Tiers |
Starter
$250
|
Standard
$900
|
Advanced
$1,800
|
|---|---|---|---|
| Delivery Time | 5 days | 14 days | 30 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 3 | 5 | 8 |
Design Customization | |||
Content Upload | - | - | - |
Responsive Design | |||
Source Code | - |
Frequently asked questions
About Stefan
Systems & Network Infrastructure Engineer | Automation & Security
Belgrade, Serbia - 11:14 pm local time
My work spans network engineering, Linux systems, infrastructure automation, virtualization, network security, monitoring, and multi-vendor environments. I have contributed to complex projects including PKI, eID, ePassport, border management, maritime surveillance, data center networking, and industrial communication systems.
I can help you with:
• Network and systems architecture, implementation, and troubleshooting
• Linux server administration and network services
• Infrastructure and network automation
• Routing, switching, firewalls, VPNs, and secure remote access
• PKI integration and certificate lifecycle automation
• Server and network equipment monitoring and management
• Virtual networking and data center infrastructure
• Multi-vendor network integration
• Technical documentation, analysis, and knowledge transfer
I have developed several Python-based solutions, including:
• A PKI automation platform covering the complete certificate lifecycle on network devices — from key generation and certificate requests to certificate deployment and integration with a Certificate Authority
• A centralized application for monitoring and managing servers and network equipment
• A web application for employee leave planning, approval workflows, and annual leave management
My technical background includes Linux, Python, Bash, Cisco IOS, Fortinet, Huawei, VMware NSX-T and vSphere, PKI, IPsec and SSL VPNs, GRE tunneling, network security monitoring, and industrial networking.
I approach projects from both infrastructure and software perspectives. My goal is not only to make a solution work, but to make it reliable, secure, maintainable, and easier to operate.
Steps for completing your project
After purchasing the project, send requirements so Stefan can start the project.
Delivery time starts when Stefan receives requirements from you.
Stefan works on your project following the steps below.
Revisions may occur after the delivery date.
Requirements review and solution design
I review your workflow, clarify scope and acceptance criteria, and define the application structure, data model, roles, and implementation plan.
Application development and workflow implementation
I build the agreed screens, business rules, roles, database, dashboards, reports, and integrations included in the selected package.