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VPN Software Developer

Dynamic IT professional and experienced VPN developer adept in bespoke VPN application development and maintenance throughout all key platforms including iOS, Android, macOS, and Windows. Skilled at engineering software solutions for VPN applications aligned with business requirements and compliance. Ability to provide technical leadership and guidance to other team members. Capable of expertly navigating upcoming VPN technologies and industry related software applications with ease. VPN Protocol: OpenVPN, IKEv2/IPSec, L2TP, SoftEther, Shadowsocks, AnyConnect, WireGuard VPN Server: OpenVPN, strongSwan, SoftEther, Shadowsocks, OpenConnect, WireGuard VPN Application: Windows, Android, iOS, macOS, Linux VPN Feature: Kill Switch, Split Tunnelling, DNS Leak Protection, IPv6 Leak Protection VPN Authentication: FreeRADIUS, VPN + SSL Certificates (Let’s Encrypt) VPN Performance: Tunning mss mtu, DNS caching VPN Monitoring: ELK, Zabbix, Monit VPN Topology: Mesh, Client-to-Client (Site-to-Site), Client-to-Subnet, Client-to-Internet Billing System: WHCMS Platform: Windows 7/8/8.1/10, Linux (Ubuntu 18.04+, CentOS 7+), Android 5+, iOS 9+, macOS 10.11+ Language: C/C++, C#, Java, Kotlin, Swift, Objective-C, PHP, Python, JavaScript, HTML5, Shell Script Framework: Apple's Network Extension Framework, Android's VpnService, Django, Laravel, React, Vue

About

$40/hr Ongoing

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Dynamic IT professional and experienced VPN developer adept in bespoke VPN application development and maintenance throughout all key platforms including iOS, Android, macOS, and Windows. Skilled at engineering software solutions for VPN applications aligned with business requirements and compliance. Ability to provide technical leadership and guidance to other team members. Capable of expertly navigating upcoming VPN technologies and industry related software applications with ease. VPN Protocol: OpenVPN, IKEv2/IPSec, L2TP, SoftEther, Shadowsocks, AnyConnect, WireGuard VPN Server: OpenVPN, strongSwan, SoftEther, Shadowsocks, OpenConnect, WireGuard VPN Application: Windows, Android, iOS, macOS, Linux VPN Feature: Kill Switch, Split Tunnelling, DNS Leak Protection, IPv6 Leak Protection VPN Authentication: FreeRADIUS, VPN + SSL Certificates (Let’s Encrypt) VPN Performance: Tunning mss mtu, DNS caching VPN Monitoring: ELK, Zabbix, Monit VPN Topology: Mesh, Client-to-Client (Site-to-Site), Client-to-Subnet, Client-to-Internet Billing System: WHCMS Platform: Windows 7/8/8.1/10, Linux (Ubuntu 18.04+, CentOS 7+), Android 5+, iOS 9+, macOS 10.11+ Language: C/C++, C#, Java, Kotlin, Swift, Objective-C, PHP, Python, JavaScript, HTML5, Shell Script Framework: Apple's Network Extension Framework, Android's VpnService, Django, Laravel, React, Vue

Skills & Expertise

C#JavaJavaScriptObjective-CPython

22 Reviews

  • Alex 1518 says,

    Great freelancer that we've used many times and will continue working together +++

    for VPN app development and fixes on Dec 08, 2020

  • Nate 56 says,

    I highly recommend Zhang who has proven himself to be an experienced software engineer that can deliver high quality code very efficiently. He’s very professional and I have been working closely with him for many years now. He's always done a great job building out sophisticated and complex applications using Laravel and Vue.js. Our latest project consists of live video conferencing and recording using the latest technology with the addition of real-time collaboration using real time engines such as Socket.io. He’s always available and reliable, we continue to make progress each day. If you’re searching for a talented software developer that will work hard and deliver quality work, Zhang is a viable option for your current or next project.

    for Need software development on Aug 04, 2020

  • Nate 56 says,

    I highly recommend Zhang who has proven himself to be an experienced software engineer that can deliver high quality code very efficiently. He’s very professional and I have been working closely with him for many years now. He's always done a great job building out sophisticated and complex applications using Laravel and Vue.js. Our latest project consists of live video conferencing and recording using the latest technology with the addition of real-time collaboration using real time engines such as Socket.io. He’s always available and reliable, we continue to make progress each day. If you’re searching for a talented software developer that will work hard and deliver quality work, Zhang is a viable option for your current or next project.

    for Need software development on Aug 04, 2020

  • William 412 says,

    Excellent work, thank you!

    for VPN job for Alexei on Feb 18, 2020

  • Tyrel says,

    110% Satisfied with the work that Zhang produced. He has exceeded my expectations, and i highly recommend him for any future projects anyone may have. Tell him what you want and he gets it done! Zhang shows a high understanding of complex projects. Do you want the best? He is the best!

    for Create an IPTV Player for Android TV on May 14, 2019

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