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Blake C.
$80/hr
100% Job Success
$1M+ earned
Available now
Offers consultations
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I’m Blake, a dedicated C# .NET developer with a strong focus on building scalable, high-performance applications. With over a decade of experience, I specialize in ASP.NET/Core backend development, complemented by Angular and React front-end solutions. My background also includes SQL databases such as MSSQL, MySQL, and PostgreSQL, along with DevOps practices across Azure and AWS. I also help businesses leverage modern AI tools and APIs to move faster and operate smarter. This includes integrating GPT, Claude, and other AI models into real-world workflows for automation, document parsing, data extraction, web automation, internal tools, and customer-facing features. Whether the goal is reducing manual work, improving operational efficiency, or accelerating development delivery, I focus on practical AI solutions that create measurable business value. Throughout my career, I’ve worked with clients ranging from startups to Fortune 500 companies, helping them achieve their goals through reliable, well-built technology solutions. I led a software development agency for five years, managed a team of 20 developers, and delivered over 50 successful projects. I now work independently as an individual contributor. I’m passionate about creating robust, production-ready applications and using the right tools, including AI, to help clients build faster and smarter. Let’s work together to turn your vision into reality.
Blake C. has worked .
Modsi - Analyze, Predict, Automate
Associated with
Modsi - Analyze, Predict, Automate
$1M+
earned
Tejinder S.
$18/hr
100% Job Success
$300K+ earned
Available now
Offers consultations
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As a seasoned Full-Stack .NET Developer, I bring a wealth of technical expertise and a proven track record in building scalable enterprise applications, SaaS platforms, cloud-native systems, high-performance APIs, and modern web and cross-platform applications using the Microsoft technology stack. My expertise spans across ASP.NET Core, .NET 8/9/10, C#, Blazor, MAUI, Angular, React, Microservices, Cloud Infrastructure, and enterprise integrations. I specialize in designing robust backend architectures, secure APIs, real-time systems, and highly responsive frontend applications for businesses across multiple industries. In addition to web and backend development, I have hands-on experience integrating AI-powered solutions into applications, including intelligent chatbots, recommendation engines, predictive analytics, OCR automation, Computer Vision, workflow automation, and AI-assisted business tools. I have worked with modern AI APIs and cloud services to enhance user experience through personalization, smart insights, intelligent automation, and real-time decision-making. My expertise includes developing scalable AI-enabled applications with intelligent automation, real-time decision systems, Computer Vision, OCR pipelines, AI chat assistants, and data-driven personalization features for modern businesses. Listed below is an overview of my skills and the tools I have worked with. Languages : C#, ASP.NET, ASP.NET Core, .NET 8/9/10, JavaScript (ES6+), TypeScript, SQL, T-SQL, HTML5, CSS3, Python, JSON Frameworks : ASP.NET MVC, ASP.NET Core MVC, Blazor Server, Blazor WebAssembly, MAUI Blazor Hybrid, Entity Framework Core, Web API, SignalR, Angular, React.js, Node.js, ABP Framework, Microservices Architecture, Clean Architecture Libraries / APIs : Twilio API, Stripe API, PayPal SDK, Google Maps API, Azure OCR, Google OCR, Firebase, REST APIs, GraphQL APIs, SignalR, WebSockets, MailChimp API, Power BI, ArcGIS, OAuth, JWT Authentication Cloud / DevOps : Microsoft Azure, Azure DevOps, Azure AKS, AWS (EC2, S3, Lambda), Docker, Kubernetes, CI/CD Pipelines, GitHub Actions, IIS Deployment, Cloud Functions Tools : Visual Studio, VS Code, SQL Server Management Studio, Postman, Swagger, Git, GitHub, GitLab, Bitbucket, SVN, Jira, Trello, Redmine, Pivotal Tracker, Azure Portal Frontend : Blazor, Angular, React.js, JavaScript, jQuery, Bootstrap, Tailwind CSS, Responsive UI Development, SPA Applications Database / Storage : Microsoft SQL Server, MySQL, PostgreSQL, MongoDB, SQLite, Redis, Firebase Firestore, DynamoDB Platforms : Web Applications, SaaS Platforms, Enterprise Applications, Desktop Applications (Windows & macOS), Mobile Applications (iOS & Android using MAUI Blazor), Cloud-Based Applications Paradigms : Agile Software Development, Scrum, Kanban, MVC, MVVM, Domain-Driven Design (DDD), Clean Architecture, SOLID Principles Core specialization in: * Enterprise SaaS platforms * CRM / ERP systems * Fintech and payment applications * Healthcare and Telemedicine systems * Logistics and Supply Chain platforms * School Management Systems * AI-powered business applications * Real-time dashboards and analytics systems * E-commerce platforms * Booking and On-demand service platforms * OCR and document processing systems * Cross-platform desktop and mobile applications using .NET MAUI
Tejinder S. has worked .
Yurii B.
$60/hr
94% Job Success
$1M+ earned
Available now
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✅ 15+ years of overall programming experience. 🗃 50+ successfully completed projects on Upwork. 🎓 Master's degree in Applied Mathematics and Informatics. Specialize in: 💎 Web Development 💎 Desktop Development for Windows 💎 Mobile Development for iOS / Android / Cross-platform 💎 MS Dynamics 365 / Salesforce 💎 UI / UX Design 💎 VR & AR Development using Unreal Engine / Unity 3D 💎 Artificial Intelligence/Machine Learning 💎 Project / Product Management 💎 Technical Oversight / Solution Architecture Expert in: C#, JavaScript, TypeScript, MS SQL, MySQL, PostgreSQL, MongoDB, ADO.NET, Entity Framework, OData, WCF Services, SOAP, REST, ASP.NET, ASP.NET MVC, ASP.NET Core, WebAPI SignalR, WinForms, WPF, ClickOnce, WinServices, MSMQ, DirectX/OpenGL, 3D Graphics, HTML, CSS, JavaScript, JQuery, Angular, React, Blazor, Vue, ElasticSearch/Solr.NET/Lucene, Redis, Azure, AWS.
Yurii B. has worked .
Maroof K.
$30/hr
100% Job Success
$4K+ earned
Available now
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With 10+ years of deep technical expertise, I architect and deliver mission-critical software solutions that bridge the gap between legacy systems and next-generation AI capabilities. My career is defined by transforming complex, high-stakes business challenges across US Healthcare, Defense, Aerospace, and Manufacturing into operational excellence. I am not merely a developer; I am a technical partner who ensures your software is scalable, secure, and sustainable. My approach combines a mastery of the Microsoft ecosystem with advanced artificial intelligence to solve problems that others consider impossible, specifically in biometric security, document parsing, and real-time communications. Core Value Proposition: I provide end-to-end solution architecture with full-cycle development ownership, from architectural blueprints to deployment. I ensure your project is architected for the long-term utilizing robust CI/CD pipelines and clean, maintainable code. I specialize in embedding intelligence into existing workflows, whether it is automating complex document processing, building AI Agents, or integrating RAG pipelines to turn data into a strategic asset. My background in Defense and US Healthcare ensures that security is not an afterthought, specializing in secure biometrics integration (ZKTeco, Mantra, Cogent) and cryptography to meet strict regulatory standards. My technical expertise spans the complete Microsoft stack and emerging technologies. For web and cloud, I utilize ASP.NET Core, MVC, Blazor, RESTful APIs, Entity Framework, and SQL Server across Azure and AWS. For desktop and cross-platform, I build using WinForms, WPF, .NET MAUI, and Xamarin. In AI and automation, I leverage RAG, AI Agents, Custom MCP Servers, ML.NET, and Python with Flask, FastAPI, TensorFlow, and PyTorch. I am an expert in biometrics and IoT, integrating ZKTeco (F22), eSSL, Cogent, Mantra, and Safran. For complex document processing, I handle S1000D for defense and aerospace, advanced OCR, and PDF manipulation. In healthcare, I manage EDI claims processing (837, 835, 277) and provider systems. I also specialize in real-time communications via TCP/IP, WebSockets, and payment gateways like Stripe, PayPal, PhonePe, and UPI. Why work with me? With 18 years in the field, I bring stability and foresight that junior developers cannot offer, anticipating pitfalls and designing systems that withstand the test of time. I understand the nuances of healthcare compliance, defense standards (S1000D), and manufacturing logistics. I leverage the robustness of C# and .NET with the agility of Python for data-heavy tasks, allowing me to choose the right tool for the job. I am passionate about Agile methodologies, ensuring transparency, rapid iteration, and continuous delivery. What I deliver is clear: for healthcare, streamlined EDI transactions, secure patient portals, and biometric authentication; for defense and aerospace, S1000D-compliant documentation and secure logistics software; and for enterprises, intelligent automation, AI-driven insights, and robust, scalable architectures. Let's connect to discuss how I can bring your vision to life with reliability and high-performance execution.
Muhammad A.
$35/hr
100% Job Success
$90K+ earned
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🖥️ C# / .NET Developer | 📦 200+ Projects | 💯 Job Success | 🏆 Top Rated Software developer building C# / .NET applications since 2010. Specialized in Windows desktop using WPF & WinForms, with cross-platform expertise in Avalonia. Experienced in Blazor frontend, ASP.NET Core backend & Azure deployments. Developing solutions for business automation, document generation, reporting, data-intensive desktop tools, API integrations, real-time dashboards, Windows service development, and legacy .NET Framework modernization. Delivered 200+ software solutions for global clients across multiple industries, from focused utilities to large-scale, long-term systems, working both independently and within distributed teams. Technical Skills ---------------- Desktop - WPF, XAML, WinForms, WinUI, Avalonia, Uno Platform, WebView2 - MVVM, Prism, ReactiveUI, Custom Controls, Templating, Styling - WinAPI, PInvoke, Native Interop, Windows Shell Integration - Hardware Integration, Third-party SDKs, Enterprise Integration - Reporting, Printing, PDF/Excel Generation, Document Processing Databases - Schema Design, SQL Server, SQLite, EF Core, Dapper, LINQ Backend & Web - REST APIs, ASP.NET Core, Minimal APIs, Swagger, Logging - Blazor, Razor Pages, MudBlazor, HTMX, HTML, CSS, JavaScript Build & Deployment - Git, MSBuild, Visual Studio, NuGet, PowerShell, Azure, Docker - Application Packaging, Installer Creation, Code Signing
Muhammad A. has worked .
Gaurav R.
$22/hr
100% Job Success
$200K+ earned
Available now
Offers consultations
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🏆 Top Rated 👍 100% Job Success 😄 Long List of Happy Clients ⏳ Fast Turnaround 📞 Excellent Communication Full Stack .Net Developer with 15+ years experience in the Healthcare domain with a special interest in HIPPA and Interoperability. I have expert knowledge of information messaging standards (I.e. HL7/FHIR/X12 and middle-ware principles and concepts (i.e. APIs, REST, WSDL, SOAP, Web Services, etc.) AI Chatbots for healthcare (patient support, triage) LLM integrations (GPT, Claude) Medical data summarisation (reports, notes) AI-powered EMR automation Voice → text medical transcription (AI) AI agents for clinics (appointments, follow-ups) My Expertise • Web & Mobile Solution • Telehealth/Telemedicine Virtual Appointment Booking Solutions & mHealth Apps • EMR, EHR, PHI, Medical Billing Solutions for Patient Healthcare/Medical Records • HealthKit Integration for Fitness Apps • Healthcare device and smartwatch integration for vitals extraction • Healthcare Marketplace Management Solutions • Doctor-patient apps and Websites • Medical Job Portals • Staff Management Software, and more! • Chat-bot, video call, SMS, email service integration  Healthcare Consulting & Subject Matter Expertise: • HIPAA Compliance & Standards • HL7 V2, HL7 FHIR, SMART on FHIR, and NCPDP Standards • EHR & EMR Integration (EPIC, Cerner) • Healthcare Device & HealthKit Integration • Consulting on Telemedicine, EMR/EHR, HL7, FHIR, EDI, HIE, CCDA, HIPAA, Mirth Connect, Billing, Benefit Plan Management, Eligibility Verification, Claim Scrubbing • Start-Up and Large Organization Consulting for HIPAA Compliance • Security Risk Assessment and Remediation for Healthcare Applications • Mirth Connect Configuration and Channel Customization • Mirth Connect-Based FHIR Integration • Lab Integrations (Uni-Directional, Bi-Directional) • Integration with PopHealth, Epic, Cerner • Billing Management and EDI Processing Systems • DICOM Viewer & PACS Solutions Technologies: .Net Framework, .Net Core, C#, ASP.Net MVC/WebAPI2/WebForms, React, Redux, Node Js, REACT, Angular,, WinForms, WPF, WinRT/WinJS, Windows Phone/Xamarin, Entities Framework/ADO.NET, MS SQL Server, Cloud Server like AWS, Azure & GC HIPAA Security Expert doing security assessment, identifying PHI, looking for HIPAA compliance, complying HITRUST requirements, Involved in auditing, reviewing BAA with HIPAA hosting provider. I have also updated with emerging technologies like AI, chatbot integration, and process automation. Our Global Impact: I've proven my healthcare domain expertise across the US, Canada, Australia, Europe, South America, and the UAE healthcare industries. Let's connect and transform your vision into a reality! Add value to your dream product with our expertise. Contact us today!
Techbit Solutions Pvt Ltd
Associated with
Techbit Solutions Pvt Ltd
$4M+
earned
Rajesh R.
$25/hr
100% Job Success
$90K+ earned
Available now
Offers consultations
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Building software is easy. Building software that scales with your business is where experience matters. I'm a Senior .NET Developer with 20+ years of experience designing and building scalable SaaS products, enterprise applications, and custom business software. As a Full Stack .NET Developer, I've helped startups, SMEs, and enterprise organizations transform complex business ideas into reliable, secure, and high-performance applications. Over the years, I've successfully delivered 375+ software projects using .NET, ASP.NET Core, C#, Angular, React, Azure, and modern cloud technologies. Whether you need a Senior .NET Developer to build a new SaaS platform, modernize a legacy .NET application, or extend an existing enterprise solution, I focus on delivering software that's scalable, maintainable, and built for long-term success. My expertise covers the complete software development lifecycle, from solution architecture and backend engineering to frontend development, cloud deployment, and ongoing product evolution. I've successfully delivered: • SaaS Platforms Development • Enterprise Web Applications Development • ERP & CRM Systems Development • AI-Powered Business Applications Development • Workflow Automation Solutions Development • Multi-Tenant Applications Development • REST APIs & Microservices Development • Healthcare Platforms Development • FinTech Applications Development • Logistics & Supply Chain Solutions Development • eCommerce Platforms Development • Internal Business Portals Development My core technology stack includes ASP.NET Core, .NET, C#, Entity Framework Core, SQL Server, PostgreSQL, Angular, React, Next.js, Azure, AWS, Docker, Redis, SignalR, Git, and CI/CD. Clients often come to me when they need to: • Build a SaaS product from scratch • Modernize a legacy .NET application • Develop secure REST APIs • Improve application performance • Scale an existing platform • Integrate third-party services • Build cloud-native applications on Azure • Add AI capabilities into existing products I believe writing code is only part of the job. Understanding the business, asking the right questions, and designing solutions that remain reliable as your product grows are equally important. I work closely with clients to make technical decisions that reduce future maintenance costs, improve scalability, and accelerate product delivery. Throughout my career, I've worked across healthcare, finance, manufacturing, logistics, hospitality, education, eCommerce, and AI-driven products. Whether joining an existing development team or leading a project from architecture to deployment, I focus on delivering software that creates long-term value. If you're looking for a Senior .NET Developer who combines deep technical expertise with business thinking, proactive communication, and a commitment to quality, I'd be happy to discuss your project and help you build a solution that's secure, scalable, and built to last.
Rajesh R. has worked .
Microlent Systems Private Limited
Associated with
Microlent Systems Private Limited
$20K+
earned
Jagdip S.
$35/hr
100% Job Success
$100K+ earned
Available now
Offers consultations
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*** Committed to Safe & Secure your Idea, Source code and Data *** Experienced and Self-driven Professional and having extensive 20+ Years of experience as a full-stack developer & architect. Resourceful problem solver and skilled in team leading and product development. Driven by technical excellence, never ending improvement and the fun and reward of building things, achieving goals and helping/contributing as much as possible. Always happy and proactive to work on new challenge and contribute ideas to make process fast and deliver a reliable solution on-time. - Good listener and a very communicative team member. - Can work on my own without guidelines or supervision. - Experienced working remotely with foreign teams. - Like to keep things as simple as possible. - Like to learn/do/contribute as much as possible but always in orderly and controlled fashion so deadlines get meet. Skills: ✅ C#, .NET Framework / Core ✅ ASP.NET / MVC / ASP.Net Web/ Web API / WCF / OAuth ✅ Angular, Vue.js ✅ XAML / MVVM / SignalR ✅ AngularJs / KnockoutJs / JavaScript / TypeScript / jQuery ✅ HTML / CSS / Bootstrap AI TOOLS: ✅ OpenAI API, DeepFace, ML/DL frameworks (TensorFlow, Keras, PyTorch, Scikit-learn), LangChain, Mistral, AgenticAI, Transformers ✅ RAG + custom AI tools: Document recognition and processing, Market Grabber, project management bots, AI for telephony, video/audio analysis ORM Tools: ✅ Entity Framework / Dapper / LINQ / nHibernate and EntitySpaces Database: ✅ SQL (MSSQL, MySQL) / SQLite / MongoDB / Elastic Search / MS Access Cloud-Based Services: ✅ Windows Azure (Expert) / Amazon Cloud services (AWS) Payment Gateway ✅ PayPal/ Stripe / Authorize.Net / Sage APIs: ✅ Google Maps / Google Drive / Facebook / Twilio / Mailgun / Paypal / eBay / Stripe / Authorize.net Others: ✅ Jira / Trello / Git / TFS / BitBucket / GitLab / GitHub. Skill Keywords# Fullstack .NET Developer | Backend .NET Developer | ASP.NET Core | C# | MVC | Web API | SQL Server | Microservices | RESTful APIs | SignalR | Entity Framework Core | Blazor | Azure | AWS | Docker | Responsive Web Design | Frontend Development | Backend Development | Database Management | Agile Development | CI/CD Pipelines | Performance Optimization | Stripe Integration | Stripe Webhooks Integration | Apple In-app Purchase webhook Integration | Google Subscription Pubsub Webooks Integration
Whizcamp Private Limited
Associated with
Whizcamp Private Limited
$100K+
earned
Roman O.
$55/hr
100% Job Success
$500K+ earned
Available now
Offers consultations
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Send your architecture for a free code review! I’m a Senior Full Stack Developer & Software Architect with 20+ years in custom software development. I use modern engineering strategies to build high-performance, enterprise-grade platforms. 🎯 What I bring to your brand as a Senior Full Stack Developer: ✔️ Over 20 years of commercial software engineering experience, leading .NET framework, C# development, and Node.js architectures for global enterprises. ✔️ Results-focused Full Stack Development: As a .NET Expert, I create scalable microservices architectures and API development plans that boost performance and handle high user concurrency. As a Software Architect, I ensure your custom software development is always ROI-driven and infinitely scalable. ✔️ Technical & Architecture Audit Mastery: As a Senior Full Stack Developer, I develop a detailed code audit, database audit, and technical architecture audit to map out your system structure. My cloud infrastructure expertise allows me to refine backend systems before scaling. I’ve delivered 150+ architecture audits and system performance reports, helping streamline software development workflows. ✔️ API Integration & Webhooks Expertise: As an API Specialist and backend developer, I prioritize REST APIs, GraphQL, and third-party integrations. My approach as a Software Architect focuses on secure authentication, OAuth2, and custom API architecture. ✔️ Frontend & Modern UI Solutions: As a Senior Full Stack Developer, I use React.js development and Vue.js optimization for high-performing user interfaces. As a .NET Expert, I handle Angular setups, UI component architecture, and frontend-to-backend integration to ensure your web application performs flawlessly. ✔️ Cloud Deployment & CI/CD Innovation: As an Azure developer and DevOps consultant, I use Docker containerization, Azure App Services, and Azure Functions to scale deployments. ✔️ Database & Performance Optimization: I am a database specialist and SQL Server developer. My technical data skills include PostgreSQL optimization, Entity Framework, and complex SQL queries. As a Software Architect, I ensure your database design is flawless using the best indexing and scaling strategies. ✔️ AI Integrations & Tooling: As an AI integration developer, I build C# and Python solutions for AI-driven services. My expertise includes pragmatic implementation of LLM APIs, OpenAI/Claude integrations, and utilizing the Model Context Protocol (MCP) to securely connect AI agents with backend systems and custom data sources without unnecessary over-engineering. 📊 My Achievements in Numbers: 🔶 Software Architect for a Global Enterprise (SaaS / B2B): ▪️ Improved API response times by 200% through technical code audit and query optimization. ▪️ Reduced cloud infrastructure costs by 50% via enhanced microservices architecture and Docker deployment. ▪️ Accelerated feature delivery by 30% using automated CI/CD pipelines and agile workflows. 🔶 Senior Full Stack Developer for a FinTech Platform: ▪️ Achieved 99.99% uptime through .NET migration and Node.js backend optimization. ▪️ Reduced database deadlocks by 100% with a technical database audit and SQL Server optimization. 🔶 API Specialist for an E-commerce Engine: ▪️ 2x checkout speed by redesigning the REST API and payment gateway integration (Stripe). ▪️ 3x faster user onboarding through architecture audit insights and Auth0 security implementation. Why should you hire me as your Senior Full Stack Developer and Software Architect? ▪️ 20+ years in software engineering, backend architecture, API development, and cloud infrastructure. ▪️ Senior Full Stack Developer in React.js, Vue.js, Angular, and modern JavaScript. ▪️ .NET Expert in C#, ASP.NET MVC, Web API, and .NET. ▪️ Delivered enterprise backend services and microservices architectures for B2B and SaaS platforms. ▪️ Node.js Specialist support for high-concurrency event-driven applications. ▪️ Database architecture specialist for SQL Server, PostgreSQL, and MySQL growth. ▪️ Expert in Azure DevOps, Docker containerization, and CI/CD pipelines. ▪️ Practical experience in AI integrations, delivering C# and Python solutions for AI-driven services, including LLMs and MCP. ▪️ Software Architect and CTO with a proven track record of zero-downtime, secure deployments. Specialized Development Services: 🔹 Architecture Audit: From database performance audit to technical code audit. 🔹 API Integration: From third-party API integrations to custom REST/GraphQL APIs. 🔹 Backend Development: From Node.js microservices to .NET Core enterprise systems. 🔹 Frontend & UI: React.js and Vue.js scalable applications. 🔹 Cloud & DevOps: Optimization for Azure App Services, Docker, and GitHub Actions. 🔹 AI Integrations: solutions for AI-driven services, LLM API endpoints, and MCP (Model Context Protocol) implementation. Looking for an experienced Senior Full Stack Developer and Software Architect? Let’s connect!
Roman O. has worked .
OSKI solutions
Associated with
OSKI solutions
$1M+
earned
Bogdan F.
$49.49/hr
100% Job Success
$20K+ earned
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👋 Hello! I'm a versatile Software Engineer with expertise in both Quality Assurance and Full-Stack Development, dedicated to enhancing your project's performance and reliability. With a strong track record across industries like Fintech, Streaming Services, and Logistics, I excel in optimizing user experiences and ensuring flawless application functionality. 🚀 Here's what I bring to the table: - Automation & QA Expertise: Skilled in Selenium WebDriver for web automation, Appium for mobile automation, and Postman/Swagger for API testing. Proficient in STLC, bug reporting, and test plan creation. - Backend Development Skills: Experienced in C# .NET Framework/Core, ASP.NET Web API/MVC, .NET Entity Framework, MSSQL, and MSUnit for unit testing. - DevOps & Cloud: Familiar with Docker for containerization, Kubernetes for orchestration, AWS/Azure for cloud deployment, and CI/CD pipelines using Git. 🤝 Let's discuss how I can contribute to your project's success through seamless QA practices and robust backend development. Looking forward to collaborating with you! Buzzwords: Payment Integration Stripe Payment Gateway ERP CRM, Develop and Maintain User- friendly Interface.
Bogdan F. has worked .