Plugins, extensions, browser protection development.
More than 11 years of development the software that extends browser's abilities.
Extensions for main browsers (Chrome, Firefox, Safari, Opera, Internet Explorer, Microsoft Edge).
Web Scrapers (Web Scraping, Data Scraping, Data Extraction, Data Mining). Scrape information from social media, ecommerce, real estate, etc sites.
Porting the extensions between different browsers.
Porting FireFox extensions from XUL/XPCOM to WebExtension architecture.
Communication between extensions and Windows applications (Native Messaging).
Extensions deobfuscation.
Installing the extension from standalone installer (for Windows).
Converting extension from Manifest V2 to Manifest V3
Protection against key-logging, formgrabbing, etc (Zeus-like troyans) for all common browsers. POS protection.
Extensions for social networks.
Automation for Amazon, Ebay, Facebook, LinkedIn, AngelList, AliExpress, Twitter, GMail,
LinkedIn Voyager API
Airtable API
TradingView.
Real Estate sites scrapers/bots.
Extensions for Outlook.
Integration with Trello, Podio, JIRA, Slack, mySMS
Integration with SCATT trainer system
Telegram web, WhatsApp web integration.
Canon SDK (EDSDK, CDSDK)
Nikon SDK
Javascript, React.js, Vue.js,
Google Sheets Automation (Apps Script).
Python (Beautiful Soup, Scrapy, Selenium, Playwright)
Delphi5-XE8
C#, Windows Forms, WPF
RS-232 (RS232) port communication
Telegram TDLib
Inno Setup.
MaxMind GeoIP
AJAX
Delphi
LinkedIn
Firefox Plugin Development
jQuery
Google Chrome Extension
Microsoft Excel
JavaScript
LinkedIn Development
Browser Extension
JSON
Alan S.
Shenzhen, China
$34/hr
4.7
81 jobs
Senior Software Architect specializing in secure systems and IoT Sec solutions with 15+ years of experience. I architect and deliver end-to-end nfc solutions, from embedded firmware to cloud-based backend systems.
๐ฏ CORE EXPERTISE
IOT Systems
- NFC Solutions: Reader/Writer, HCE, Digital Wallets (Android/iOS)
- Smart Cards: JavaCard, MIFARE, DESFire, NTAG,Global Platform,GP,JCOP,Secure Element
- Security: PKI, FIDO, Secure Element,HSM, PCI-DSS Compliance
- RFID Systems: Asset Tracking, Access Control
- EMV Payment: L1/L2/L3 Kernel Development & Certification
- Microcontrollers: ESP32, STM32 (WiFi/BLE, RTOS)
- Firmware: Secure Bootloader, OTA Updates, Real-time Systems
- Industrial Applications: POS Terminals, Vending Machines, Access Control
- IoT Architecture: Sensor Integration, Remote Management
Full-Stack Development
- Backend: Node.js, REST APIs, Database Design (SQL/NoSQL)
- Cloud Services: Firebase, AWS/Azure/GCP Deployment
- Mobile: Android (NFC APIs), iOS (CoreNFC), React Native
- Desktop: Qt, .NET, Cross-platform Applications
- Languages: C/C++, JavaScript/TypeScript, Java, C#
๐ผ SIGNATURE PROJECTS
โ ESP32 IoT Systems
- Created NFC-enabled payment solution with cloud integration
- Built secure firmware with OTA update capabilities
- Integrated Firebase for real-time data synchronization
โ Cross-Platform Digital Wallet
- Developed mobile wallet supporting EMV contactless payments
- Implemented HCE and Secure Element integration
- Built Node.js backend with Firebase authentication
โ Enterprise RFID Solutions
- Designed asset tracking systems for industrial clients
- Implemented access control with NFC/RFID readers
- Deployed cloud-based management platform
โ EMV Payment Terminal Solutions
- Developed EMV L2 & L3 kernel for contact/contactless terminals
- Achieved EMVCo certification for payment applications
- Implemented secure key management and transaction processing
๐ง TECHNICAL STACK
Hardware: ESP32, STM32, NFC Readers, RFID Systems
Backend: Node.js, Express, Firebase, REST APIs
Database: MongoDB, PostgreSQL, MySQL, Firestore
Cloud: Firebase, AWS, Azure, Docker deployment
Mobile: Android, iOS, React Native
Desktop: Qt, .NET, Windows/Linux
Security: PKI, FIDO, PCI-DSS, Secure Boot
๐ CERTIFICATIONS & STANDARDS
EMVCo, PCI-DSS, PBOC, Global Platform, ISO 14443
I deliver production-ready solutions with clean code, comprehensive documentation, and ongoing support. Available for both fixed-price projects and long-term contracts.
Android
JavaScript
C
C#
Java
C++
RESTful API
POS Terminal
RFID
NFC
Qt Framework
NodeJS Framework
WeChat
Payment Processing
Embedded Linux
Dharmandar K.
Saharanpur, India
$25/hr
5.0
42 jobs
I am an experienced Full-Stack Software Developer & Solution Architect with strong analytical and problem-solving skills, delivering scalable, secure, and high-performance applications across Web, Desktop, Mobile, Cloud, Blockchain, and AI-powered systems. I specialize in building real-time, data-intensive, and enterprise-grade solutions that solve complex business challenges.
โ Core Technical Expertise
______________________________________________________________________
โ๏ธ Backend / Server-Side Development
C#, .NET Framework, .NET Core, ASP.NET MVC, Web API
Node.js, Express.js
Real-time systems using SignalR & WebSockets
Microservices architecture, RESTful APIs, modular scalable systems
๐๏ธ Databases & Data Engineering
SQL Server, MySQL, PostgreSQL
MongoDB, NoSQL, distributed data systems
Database optimization, performance tuning, stored procedures
๐จ Frontend Development
JavaScript, TypeScript
AngularJS, modern Angular, React (if applicable)
jQuery, Bootstrap, Knockout.js
HTML5, CSS3, SASS/SCSS, responsive UI, UX-focused development
๐ฑ Mobile & Cross-Platform Development
Android (Native)
Xamarin, PhoneGap/Ionic
ElectronJS for cross-platform desktop apps
๐ Tools, Libraries & Integrations
Syncfusion, PDFSharp, AngleSharp, HTML Agility Pack
Payment gateways, 3rd-party integrations, automation tools
Reporting, dashboards, multi-tenant systems
โ๏ธ Cloud & DevOps (If you want, I can expand this section)
Azure, AWS basics
CI/CD pipelines (GitHub Actions, Bitbucket Pipelines, Azure DevOps)
Docker, containerized deployments
๐ง AI, Automation & Blockchain
AI/ML integrations, automation scripts, data processing pipelines
Bot development, chatbots, workflow automation
Ethereum blockchain development
Smart contract development (Solidity, Truffle, Web3)
๐ Project Management & Development Methodologies
Agile, Scrum, Kanban
TDD (Test-Driven Development), Clean Code, SOLID Principles
Git, GitHub, GitLab, Bitbucket, SVN
JIRA, Azure DevOps, Trello, Freedcamp, MS Team Foundation
I follow a structured Software Development Life Cycle (SDLC) to ensure quality, reliability, and maintainability at every stageโfrom requirements and architecture to development, testing, deployment, and long-term support.
๐ Why Clients Enjoy Working With Me
______________________________________________________________
Strong logical, analytical, and architectural thinking
Transparent communication and proactive collaboration
Flexible with budgets and project scopes
Committed to meeting deadlines and exceeding expectations
Focused on long-term client relationships and continuous improvement
Iโm a highly self-motivated professional who takes ownership of every project. My goal is to deliver solutions that are scalable, secure, user-friendly, and aligned with your business goals.
Xamarin
C#
SQL
React
AngularJS
Knockout.js
ASP.NET
MongoDB
Hybrid App Development
Desktop Application
Apache Cordova
Ionic Framework
Muhammad A.
Gujranwala, Pakistan
$40/hr
4.5
67 jobs
๐ ๐ฌ๐ข๐ง๐ ๐ฅ๐ ๐ก๐๐๐ฅ๐ญ๐ก๐๐๐ซ๐ ๐๐๐ญ๐ ๐๐ซ๐๐๐๐ก ๐ง๐จ๐ฐ ๐๐ฏ๐๐ซ๐๐ ๐๐ฌ $๐.๐๐ โ ๐ญ๐ก๐ ๐๐จ๐ฌ๐ญ๐ฅ๐ข๐๐ฌ๐ญ ๐จ๐ ๐๐ง๐ฒ ๐ข๐ง๐๐ฎ๐ฌ๐ญ๐ซ๐ฒ. ๐ ๐๐๐ข๐ฅ๐๐ ๐๐๐ ๐ข๐ง๐ญ๐๐ ๐ซ๐๐ญ๐ข๐จ๐ง ๐๐จ๐ฌ๐ญ๐ฌ ๐ฒ๐จ๐ฎ ๐ญ๐ก๐ ๐ฐ๐ก๐จ๐ฅ๐ ๐ฉ๐ซ๐จ๐๐ฎ๐๐ญ.
I build healthcare platforms that pass the security review and the clinician's daily use โ the two places most health software dies. For 8+ years I've delivered HIPAA-compliant EHR, telehealth, and AI health platforms, including work that helped a client secure $7M+ in Series A funding.
I don't just write code. I solve for ๐ข๐ง๐ญ๐๐ซ๐จ๐ฉ๐๐ซ๐๐๐ข๐ฅ๐ข๐ญ๐ฒ, ๐๐๐ญ๐ ๐ฌ๐๐๐ฎ๐ซ๐ข๐ญ๐ฒ, ๐๐ง๐ ๐๐ฅ๐ข๐ง๐ข๐๐๐ฅ ๐๐๐๐ข๐๐ข๐๐ง๐๐ฒ so your product scales, performs, and earns trust.
***๐๐ก๐๐ญ ๐๐'๐ฏ๐ ๐๐๐ฅ๐ข๐ฏ๐๐ซ๐๐***
- ๐๐๐ / ๐๐๐ / ๐๐๐ ๐ฉ๐ฅ๐๐ญ๐๐จ๐ซ๐ฆ ๐ฆ๐จ๐ง๐ข๐ญ๐จ๐ซ๐ข๐ง๐ ๐ญ๐ก๐จ๐ฎ๐ฌ๐๐ง๐๐ฌ ๐จ๐ ๐ฉ๐๐ญ๐ข๐๐ง๐ญ๐ฌ โ automated device sync (PAP machines, pulse oximeters, Apple Watch, Garmin, Fitbit, Oura), real-time compliance dashboards with risk stratification, and EHR integration. Includes a custom ๐๐ ๐๐๐ซ๐ฅ๐ฒ-๐ฐ๐๐ซ๐ง๐ข๐ง๐ ๐ฆ๐จ๐๐๐ฅ (trained on 28,000+ patients, 0.96 AUC) flagging adherence failure weeks ahead, plus automated billing under 2026 CMS RPM/RTM/CCM codes
- ๐๐จ๐ฆ๐ฉ๐ซ๐๐ก๐๐ง๐ฌ๐ข๐ฏ๐ ๐ฉ๐๐๐ข๐๐ญ๐ซ๐ข๐ ๐ญ๐ก๐๐ซ๐๐ฉ๐ฒ ๐๐๐ (OT/PT/ST/ABA) โ multi-tenant, FHIR-native SaaS (Medplum) for outpatient, in-home, and school-based care. Onboarding, RBAC, scheduling, clinical documentation, and authorizations โ with ๐๐-๐๐ฌ๐ฌ๐ข๐ฌ๐ญ๐๐ ๐๐จ๐๐ฎ๐ฆ๐๐ง๐ญ๐๐ญ๐ข๐จ๐ง (voice/text/structured) and ๐๐ฎ๐ญ๐จ๐ฆ๐๐ญ๐๐ ๐๐๐ (CMS-1500, Availity eligibility, AI compliance engine, claim-lifecycle tracking). Built to ONC certification criteria
- ๐๐ฎ๐ง๐ง๐ฒ ๐๐๐ฅ๐๐ก๐๐๐ฅ๐ญ๐ก โ ๐ฉ๐๐ญ๐ข๐๐ง๐ญ-๐๐๐๐ข๐ง๐ ๐ญ๐๐ฅ๐๐ก๐๐๐ฅ๐ญ๐ก ๐ฉ๐ฅ๐๐ญ๐๐จ๐ซ๐ฆ + ๐๐ฎ๐ฌ๐ญ๐จ๐ฆ ๐ก๐๐๐ฅ๐ญ๐ก๐๐๐ซ๐ ๐๐๐ (in production). Patient self-scheduling synced to provider calendars, full lead lifecycle (capture โ consent โ conversion), segmented marketing automation, RingCentral click-to-call, and a clinician ๐๐ก๐ซ๐จ๐ฆ๐ ๐๐ฑ๐ญ๐๐ง๐ฌ๐ข๐จ๐ง for in-EMR workflows. Bi-directional ๐๐ฎ๐ง๐จ ๐๐๐ ๐ข๐ง๐ญ๐๐ ๐ซ๐๐ญ๐ข๐จ๐ง (REST API), dynamic RBAC with PHI audit logging, ๐๐๐๐๐๐-๐๐จ๐ฆ๐ฉ๐ฅ๐ข๐๐ง๐ญ with Canadian data residency
- ๐๐๐ข๐ซ๐๐ฌ๐ฎ ๐๐จ๐ฆ๐ ๐๐๐ซ๐ โ ๐๐ง๐-๐ญ๐จ-๐๐ง๐ ๐ก๐จ๐ฆ๐-๐๐๐ซ๐ ๐จ๐ฉ๐๐ซ๐๐ญ๐ข๐จ๐ง๐ฌ ๐ฉ๐ฅ๐๐ญ๐๐จ๐ซ๐ฆ โ three mobile apps (caregiver EVV, staff, client) plus admin/client web portals, multi-tenant, built for 10,000+ monthly visits. ๐๐๐ with GPS clock-in/out, offline sync, and signature capture; ๐๐๐ง๐๐๐ญ๐ ๐๐ ๐ ๐ซ๐๐ ๐๐ญ๐จ๐ซ integration for 21st Century Cures Act & state Medicaid compliance; an ๐๐ฎ๐ญ๐จ๐ฆ๐๐ญ๐๐ ๐ฉ๐๐ฒ๐ซ๐จ๐ฅ๐ฅ ๐๐ง๐ ๐ข๐ง๐ (timesheets, overtime/PTO rules, federal/state/Medicaid tax, pay stubs) and double-entry expense/budget ledger with QuickBooks export
- ๐ฌ๐จ๐ก๐๐๐ฅ๐ญ๐ก๐๐ฎ๐ฅ โ ๐ ๐๐๐-๐ง๐๐ญ๐ข๐ฏ๐ ๐ฉ๐๐ซ๐ฌ๐จ๐ง๐๐ฅ & ๐๐๐ฆ๐ข๐ฅ๐ฒ ๐ก๐๐๐ฅ๐ญ๐ก-๐ซ๐๐๐จ๐ซ๐ ๐๐ฉ๐ฉ (iOS & Android) โ full-stack build, rebuilt after a compliance audit: ๐ ๐๐๐-๐๐ฅ๐ข๐ ๐ง๐๐, ๐๐๐ซ๐ฏ๐ข๐๐๐ฌ ๐๐ฎ๐ฌ๐ญ๐ซ๐๐ฅ๐ข๐-๐๐ฉ๐ฉ๐ซ๐จ๐ฏ๐๐, zero production outages since launch
- ๐๐๐ฅ๐๐ โ ๐ซ๐๐ฆ๐จ๐ญ๐ ๐ฌ๐๐๐๐ญ๐ฒ & ๐ก๐๐๐ฅ๐ญ๐ก-๐ฆ๐จ๐ง๐ข๐ญ๐จ๐ซ๐ข๐ง๐ ๐๐ฉ๐ฉ for a market-leading Canadian LTE smartwatch โ iOS & Android apps, caregiver monitoring backend, real-time alerting: vitals, fall/seizure detection with GPS alerts, geofencing, SOS, multi-guardian support
๐๐ฅ๐ฎ๐ฌ ๐ฆ๐๐ง๐ฒ ๐ฆ๐จ๐ซ๐ โ Cerner/Oracle Health SMART on FHIR integrations, HIPAA-compliant teledermatology, AI clinical documentation and SOAP-note generation, multi-portal vaccine management, and intake & scheduling automation (Formsort, DrChrono, Salesforce).
***๐๐จ๐ฆ๐ฉ๐ฅ๐ข๐๐ง๐๐, ๐๐จ๐ฏ๐๐ซ๐๐ ๐๐ซ๐จ๐ฆ ๐๐๐ฒ ๐๐ง๐***
Consultation and full-stack implementation for industry-grade compliance:
๐๐๐๐๐ ยท ๐๐๐๐๐๐ ยท ๐๐๐๐ ยท ๐๐๐๐๐๐ ยท ๐๐๐ ๐ ยท ๐๐๐ ๐๐๐๐๐ ยท ๐ ๐๐ ๐๐๐๐ ยท ๐๐๐ ยท ๐๐๐ & ๐ ๐๐๐ ยท ๐๐๐ฌ๐ญ ๐๐๐ง๐ญ๐ฎ๐ซ๐ฒ ๐๐ฎ๐ซ๐๐ฌ ๐๐๐ญ
Experience building FDA-registered MDDS platforms and ONC-aligned EMRs, built to the highest data security and privacy standards.
***๐๐๐๐ก ๐๐ญ๐๐๐ค***
๐ ๐ซ๐จ๐ง๐ญ๐๐ง๐: React, TypeScript, Vue, Angular, Material UI, Tailwind
๐๐๐๐ค๐๐ง๐: Node.js, Express.js, Django REST, REST, GraphQL, OAuth, JWT
๐๐๐ญ๐๐๐๐ฌ๐๐ฌ: MongoDB, PostgreSQL, MySQL, Firebase
๐๐/๐๐: OpenAI API, TensorFlow, PyTorch, NLP, Computer Vision, MLOps
๐๐๐ฏ๐๐ฉ๐ฌ: AWS, Microservices, Docker, CI/CD
***๐๐๐๐ฅ๐ญ๐ก๐๐๐ซ๐ ๐๐ญ๐๐ง๐๐๐ซ๐๐ฌ & ๐๐ฅ๐๐ญ๐๐จ๐ซ๐ฆ๐ฌ***
HL7, FHIR (SMART on FHIR), CDA, DICOM, ICD โ built on Medplum and OpenEMR, integrated with Cerner (Oracle Health), athenahealth, and DrChrono
Let's turn your healthcare idea into a compliant, scalable product clinicians actually use.
Tap ๐๐ง๐ฏ๐ข๐ญ๐ ๐ญ๐จ ๐๐จ๐ to start building results, not just software.
Telemedicine
Medical Billing
Electronic Health Record
HIPAA
Machine Learning
API
Full-Stack Development
React
Node.js
Mobile App Development
Web Development
iOS
AI Development
Python
.NET Core
Govinda A.
Una, India
$25/hr
4.9
46 jobs
Hi,
I am a .Net developer having 12+ years of professional experience with a wide range of technologies and Frameworks.
I am proficient with the following technology stack:
โ .Net Framework, Asp.net Core ,
โ Xamarin Expert
โ MAUI
โ Angular Expert
โ NativeScript-Angular.JS/Vue.JS
โ Ionic/Angular
โ Apache Cordova
โ Capacitor
โ Node.JS
โ Typescript, SAAS & LESS
โ Azure , AWS, EC2, lambda, S3, RDS, Cloud Front, Cloudformation, Rekognition, Kinesis, translate, Amplify and Elasticsearch.
โ MySQL, Oracle, MSSQL server, PostgreSQL MongoDB, Dynamo
โ Maven, Ant, Jenkins, Circle CI, CI/CD in Bitbucket and Gitlab
โ Docker CLI, docker-compose, Orchestration with Kubernetes, Docker Swarm, and Amazon ECS
I have recently completed an ongoing project so currently, I am open for new engagements and can be available for 40-50 hours per week.
AngularJS
ASP.NET MVC
ASP.NET
ASP.NET Core
C#
.NET Framework
React
Node.js
JavaScript
Microsoft SQL Server
Angular
TypeScript
NodeJS Framework
Mobile Development Framework
React Native
Full-Stack Development
Back-End Development
API Development
API
Electron
S. M. Nazmul H.
Dhaka, Bangladesh
$50/hr
4.9
66 jobs
Iโm S M Nazmul Hasan, CEO of Kolpolok Limited, trusted by cybersecurity companies, SaaS providers, and VPN startups in 65+ countries. Over the past decade, Iโve delivered VPN solutions that power millions of daily connections. I build scalable, reliable VPN platforms that drive real business growth.
๐ก๐ฆ๐ผ๐น๐๐๐ถ๐ผ๐ป๐ ๐ ๐๐ฒ๐น๐ถ๐๐ฒ๐ฟ ๐ณ๐ผ๐ฟ ๐ฌ๐ผ๐
โก๏ธ End-to-End VPN App Development:
โ Multi-platform VPN apps for iOS, Android, Windows, macOS, Fire TV, and browsers
โ Fully white label vpn solutions with ๐ฐ๐ผ๐บ๐ฝ๐น๐ฒ๐๐ฒ ๐๐ผ๐๐ฟ๐ฐ๐ฒ-๐ฐ๐ผ๐ฑ๐ฒ ๐ผ๐๐ป๐ฒ๐ฟ๐๐ต๐ถ๐ฝ
โ Seamless in-app purchases, user authentication, and multi-language support
โ Intuitive UI/UX design focused on conversion and retention
โก๏ธ White-Label VPN SDK Integration:
โ WL VPN SDK integration with scalable custom backend solutions
โ Integration with PureVPN White Label SDK and other leading providers
โ Ready-to-launch SDKs customized to your brand and user requirements
โ Full technical support for integration, testing, and deployment
โก๏ธ Multi-Protocol Backend Infrastructure:
โ Support for OpenVPN, WireGuard, IKEv2, Shadowsocks, VMess, VLESS, IPsec, OpenConnect, Singbox compatible infrastructure
โ Scalable VPN admin panel dashboards with user management, and analytics.
โ Real-world traffic optimization, load balancing, and redundancy configurations
โ Compliance-ready architecture aligned with GDPR, SOC2, and ISO standards
๐ก๐ช๐ต๐ ๐๐น๐ถ๐ฒ๐ป๐๐ ๐๐ต๐ผ๐ผ๐๐ฒ ๐ ๐ฒ
I donโt just build apps, I build VPN ecosystems tailored to your business model.
โ Total Code Ownership โ You own the complete source code from day one
โ Business-First UX โ Apps designed for real users, not just developer functionality
โ Security & Compliance โ ISO-certified workflows, and robust encryption standards
โ Scalable Architecture โ Built to grow with your user base, handling thousands of concurrent connections
โ Rule-Based Routing & Split Tunneling โ Optimized configurations for China and restricted regions
โ Complete Documentation โ Clean code documentation
โ Manual Training & Technical Support โ Hands-on guidance for your internal team
โ Fast Delivery โ Fast responses, and transparent progress updates
โ ๐ง๐ผ๐ฝ-๐ฅ๐ฎ๐๐ฒ๐ฑ ๐ฃ๐น๐๐ ๐จ๐ฝ๐๐ผ๐ฟ๐ธ ๐๐ผ๐ป๐๐ฟ๐ฎ๐ฐ๐๐ผ๐ฟ
โ ๐ญ๐ฌ๐ฌ%+ ๐๐ผ๐ฏ ๐ฆ๐๐ฐ๐ฐ๐ฒ๐๐ ๐ฅ๐ฎ๐๐ถ๐ป๐ด
โ ๐ต๐ฌ% ๐๐ฏ๐ผ๐๐ฒ ๐ฅ๐ฒ-๐ต๐ถ๐ฟ๐ฒ ๐ฅ๐ฎ๐๐ฒ
๐๐ฃ๐ฟ๐ผ๐๐ฒ๐ป ๐ง๐ฟ๐ฎ๐ฐ๐ธ ๐ฅ๐ฒ๐ฐ๐ผ๐ฟ๐ฑ
Delivered 150+ projects in 65+ countries across 5 continents
โ Developed VPN apps with millions of downloads and 4.9+ star average ratings across Google Play, App Store, and Trustpilot
โ Supported long-term client growth with performance-focused infrastructure enhancements
๐ค๐ช๐ต๐ผ ๐ ๐ฆ๐๐ฝ๐ฝ๐ผ๐ฟ๐ & ๐ช๐ผ๐ฟ๐ธ ๐ช๐ถ๐๐ต
โ Startups, SaaS, and tech firms launching their first VPN product to enter this booming market
โ Entrepreneurs and VPN resellers seeking high-performance white-label apps with fast deployment
โ Agencies and consultancies adding VPN to their service portfolio for recurring revenue streams
๐ก๐ฅ๐ฒ๐ฐ๐ฒ๐ป๐ ๐๐ผ๐ฐ๐๐ ๐๐ฟ๐ฒ๐ฎ๐
โ Open Connect, WireGuard, OpenVPN, Sing Box optimization for faster connections and lower battery usage
โ Advanced obfuscation techniques to bypass censorship firewalls
โ Payment gateway integrations for subscription-based VPN monetization
โ VPN reseller admin panels with automated user and license management
โ Multi-protocol hybrid backend design for global coverage and redundancy
๐๐ฒ๐โ๐ ๐๐๐ถ๐น๐ฑ ๐ฌ๐ผ๐๐ฟ ๐ฉ๐ฃ๐ก ๐๐๐๐ถ๐ป๐ฒ๐๐
Youโre not just hiring a VPN developer. Youโre partnering with an expert who understands the technical, business, and security dimensions of building VPN products that scale.
If youโre ready to deploy a secure, scalable, and revenue-generating VPN solution under your brand, send me a message. Iโll respond within 24 hours with a tailored roadmap to bring your VPN vision to life.
๐ฐ๐ ๐๐ ๐ ๐๐๐๐๐ ๐๐ ๐๐๐๐-๐๐๐๐๐ ๐ฝ๐ท๐ต ๐๐๐๐๐๐๐๐๐, ๐ฐ ๐๐๐๐ ๐๐๐๐๐ ๐๐๐ ๐๐๐ ๐๐๐๐ ๐๐๐ ๐๐๐๐๐ ๐๐๐๐๐ ๐๐๐๐๐-๐๐๐๐๐ ๐๐ ๐๐๐ ๐๐ ๐๐๐๐ ๐๐๐๐ ๐๐๐๐๐๐๐๐๐ ๐ ๐๐๐๐๐ ๐๐๐ ๐๐๐๐ ๐ ๐๐๐๐๐๐๐๐๐๐ ๐๐๐๐๐๐๐๐๐๐.
โ MVP Development for Fast Launch
Agile MVP's tailored to validate your core concept, reduce time-to-market, and attract user tractionโwithout unnecessary features or costs.
โ UI/UX Design that Converts
Crafting modern, user-focused interfaces for mobile and web appsโbuilt to engage, retain, and grow your audience from day one.
โ Fleet & VTS Tracking โ Real-time GPS tracking and fleet optimization systems
โ IoT Solutions โ Smart, connected platforms with real-time automation
โ AI Integration โ Predictive, data-driven features to power growth
Whether you're testing a new product or refining an existing one, I ensure your app is not just functionalโbut user-loved and market-ready.
Letโs connect to launch your brand and lead the market today!
Objective-C
iOS Development
PHP
Vue.js
SQL
Android App Development
VPN
Android
Laravel
How it works
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Tell us what you need. Create your own job post or generate one with AI then filter talent matches.
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Consult, interview, and hire quickly, so you can meet the freelancers you're excited about.
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Use Upwork to chat or video call, share files, and track project progress right from the app.
Payment simplified
Manage payments in one place with flexible billing options. Only pay for approved work, hourly or by milestone.
Don't just take our word for it
โUpwork provides an umbrella-level of security. I can see a talentโs work history and ratings. I can hold payments in escrow. I can communicate through Upwork Messages instead of working through my email address.โ
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Kim Darling
Emerald Tiger
โUpwork is the best platform to hire skilled professionals when we're not looking for a full-time employee. All the companies in our portfolio use Upwork to find talent across a wide range of fields.โ
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David Merry
Kinetic Investments
โOur very specific requirements can be a challengeโWith Upwork, weโre able to access a bigger community to ensure the success of our projects.โ
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Katja Krohn
Summa Linguae
How do I hire a XUL Developer on Upwork?
You can hire a XUL Developer on Upwork in four simple steps:
Create a job post tailored to your XUL Developer project scope. Weโll walk you through the process step by step.
Browse top XUL Developer talent on Upwork and invite them to your project.
Once the proposals start flowing in, create a shortlist of top XUL Developer profiles and interview.
Hire the right XUL Developer for your project from Upwork, the worldโs largest work marketplace.
At Upwork, we believe talent staffing should be easy.
How much does it cost to hire a XUL Developer?
Rates charged by XUL Developers on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.
Why hire a XUL Developer on Upwork?
As the worldโs work marketplace, we connect highly-skilled freelance XUL Developers and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream XUL Developer team you need to succeed.
Can I hire a XUL Developer within 24 hours on Upwork?
Depending on availability and the quality of your job post, itโs entirely possible to sign up for Upwork and receive XUL Developer proposals within 24 hours of posting a job description.