๐ Senior Full Stack .NET Developer | 5+ Years of Experience
I'm a Full Stack .NET Developer with over 5 years of experience building scalable, secure, and high-performance web applications. As a Full Stack .NET Developer, I specialize in developing end-to-end solutions using modern .NET technologies, clean architecture, and industry best practices.
My expertise covers the complete software development lifecycle, from backend APIs to responsive frontend applications. Whether you need a new application, modernization of an existing .NET project, API integration, or enterprise software development, I can deliver reliable and production-ready solutions.
My Core Skills
โ Full Stack .NET Development
โ ASP.NET Core & ASP.NET MVC
โ .NET 6, .NET 7, .NET 8
โ C# Development
โ RESTful API Development & Integration
โ Entity Framework & Entity Framework Core
โ SQL Server & Database Design
โ Azure Cloud Services
โ HTML5, CSS3, JavaScript
โ React.js & Angular
โ Bootstrap & Tailwind CSS
โ Git, GitHub & Azure DevOps
What I Can Help You With
Custom .NET Web Applications
Enterprise Full Stack .NET Solutions
ASP.NET Core API Development
Full Stack Development with React or Angular
Legacy .NET Application Modernization
Database Design & Performance Optimization
Cloud Deployment with Azure
Third-Party API Integration
Bug Fixing, Maintenance & Performance Improvements
As a dedicated Full Stack .NET Developer, I focus on writing clean, maintainable code, delivering projects on time, and ensuring excellent communication throughout every stage of development.
If you're looking for a reliable Full Stack .NET Developer who can build scalable .NET applications and help your business grow, I'd be happy to discuss your project.
SignalR
C#
.NET Core
Blazor
Entity Framework
ASP.NET Core
ASP.NET MVC
React
Microsoft SQL Server
Microsoft Azure
PostgreSQL
Angular
ADO.NET
.NET Compact Framework
.NET Stack
.NET Framework
Rafael E.
Bogota, Colombia
$35/hr
5.0
11 jobs
Iโm an AV Systems Designer and DSP/Control Programmer with solid experience delivering reliable, installer-ready solutions for commercial and residential projects. I specialize in creating clean system designs, stable DSP files, and intuitive control interfaces for integrators, consultants, and AV contractors.
I work with the following platforms and technologies:
DSP & Audio
- Bose ControlSpace Designer & Modeler
- Biamp Audia, Nexia & Tesira
- Extron DSP
- Loudspeaker coverage analysis & acoustic modeling
- Gain structure, routing, presets & logic
Control Systems
- Crestron (SIMPL Windows, VT-Pro, Toolbox)
- GUI design & signal flow integration
- On-site and remote commissioning
Design & Documentation
- AutoCAD & Revit
- 2D/3D design
- SLD, wiring diagrams, signal flow schematics
- Rack elevations, floor plans & equipment layouts
- Documentation for permits, construction, and installers
Brands I work with
AtlasIED, Bose, Biamp, Crestron, Extron, ElectroVoice, JBL, QSC, SAVI, Shure, Sonance, and more.
Autodesk AutoCAD
Autodesk Revit
3D Design
2D Design
Crestron Programming
2D Drafting
2D Design & Drawings
Crestron
AV Equipment
Digital Signal Processing
Tanvi D.
Gurugram, India
$15/hr
5.0
4 jobs
I help startups, SaaS companies, and enterprises build intelligent AI Voice Agents, AI Calling Systems, AI Receptionists, and Conversational AI solutions that automate customer interactions and streamline business operations. With 5+ years of experience in AI Voice and Speech technologies, I specialize in creating natural, human-like voice experiences powered by Large Language Models (LLMs), real-time speech processing, and cloud communication platforms.
From AI-powered inbound receptionists and outbound sales agents to enterprise contact center automation, I design scalable Voice AI solutions that improve customer engagement, reduce manual workloads, and increase operational efficiency. My expertise covers the complete development lifecycle, from solution architecture and conversational design to deployment, optimization, and ongoing support.
Whether you need a voice agent that answers customer calls, qualifies leads, books appointments, handles support requests, or integrates with your CRM and business applications, I can deliver a reliable, production-ready solution tailored to your business goals.
๐๐จ๐ซ๐ ๐๐ฑ๐ฉ๐๐ซ๐ญ๐ข๐ฌ๐
โข AI Calling Agents & AI Receptionists
โข Voice AI & Conversational AI Development
โข Amazon Connect, Amazon Transcribe & Amazon Polly
โข Vapi, Retell AI, ElevenLabs, Deepgram & Whisper
โข Automatic Speech Recognition (ASR)
โข Speech-to-Text (STT) & Text-to-Speech (TTS)
โข Voice Synthesis & Neural Voice Generation
โข AI Phone Agents & Intelligent IVR Systems
โข OpenAI GPT, Claude, Gemini & LLM Integration
โข Prompt Engineering & AI Agent Workflows
โข CRM, ERP & Business Process Automation
โข Twilio Voice, SIP, WebRTC & Telephony APIs
โข API Integrations & Workflow Automation
โข Real-Time Voice Streaming & Voice Analytics
๐๐ฅ๐๐ญ๐๐จ๐ซ๐ฆ๐ฌ & ๐๐๐๐ก๐ง๐จ๐ฅ๐จ๐ ๐ข๐๐ฌ
โข Amazon Web Services (AWS)
โข Amazon Connect, Amazon Lex, Amazon Polly, Amazon Transcribe
โข Vapi AI, Retell AI, ElevenLabs, Deepgram, AssemblyAI
โข OpenAI, Anthropic Claude, Google Gemini, LangChain
โข Python, Node.js, JavaScript & TypeScript
โข FastAPI, Express.js & REST APIs
โข PostgreSQL, MongoDB, Redis & Vector Databases
โข Twilio, WebRTC, SIP, WebSockets & Cloud Communications
๐๐จ๐ฅ๐ฎ๐ญ๐ข๐จ๐ง๐ฌ ๐ ๐๐ฎ๐ข๐ฅ๐
โข AI Receptionists for businesses and call centers
โข AI Sales Calling Agents & Lead Qualification Systems
โข Customer Support Voice Bots & Virtual Assistants
โข Appointment Scheduling & Calendar Automation
โข Outbound Calling & Follow-up Automation
โข Intelligent IVR & Contact Center Solutions
โข Voice-enabled CRM and Helpdesk Integrations
โข AI Survey, Verification & Customer Feedback Systems
โข Custom Voice AI Applications powered by LLMs
โข End-to-End Voice Automation Workflows
๐๐ง๐๐ฎ๐ฌ๐ญ๐ซ๐ข๐๐ฌ ๐ ๐๐๐ซ๐ฏ๐:
Healthcare โข Real Estate โข Finance โข Banking โข Insurance โข E-commerce โข Logistics โข Manufacturing โข HR & Recruitment โข Education โข Hospitality โข Travel โข SaaS โข Professional Services
๐๐ก๐ฒ ๐๐ฅ๐ข๐๐ง๐ญ๐ฌ ๐๐ก๐จ๐จ๐ฌ๐ ๐๐
โ 5+ years of specialized experience in AI Voice & Speech technologies
โ End-to-end solution development, from architecture to deployment
โ Strong expertise in AWS Voice Services, Amazon Connect, Vapi, and Retell AI
โ Deep understanding of ASR, STT, TTS, Voice Synthesis, and Conversational AI
โ Scalable, secure, and enterprise-ready application development
โ Clean architecture, API-first development, and seamless third-party integrations
โ Reliable communication, transparent project execution, and long-term support
My goal is to build Voice AI solutions that not only sound natural but also deliver measurable business value whether that's automating customer support, increasing sales conversions, improving response times, or reducing operational costs.
If you're looking for an experienced AI Voice developer to build an intelligent calling agent, AI receptionist, or enterprise Voice AI solution, let's connect and discuss how we can bring your idea to life.
Artificial Intelligence
Mobile App
Android App Development
International Development
App Development
Web Development
Web Application
Antonitte N.
Naga City, Philippines
$10/hr
5.0
10 jobs
โข With 13+ years work experience in a multi-national company engaging in biotechnology and healthcare equipment manufacturing
โข Graduate of Engineering with practiced Engineering Documentation skills
โข Supervisory experience in Order Processing System
โช๏ธ Proven experience in customer service, handling inquiries, concerns, and client support efficiently, Handling Requests for Quotations RFQ's & Preparing Price Quotes, Inside Sales & Quote Coordinator
โข Topnotch experience in Inventory Control Management
โข Well-rounded in premium management softwares such as MS Navision, MES Hydra, MS Business Central, etc
โช๏ธ Bill of Materials (BOM) Controller
โช๏ธ Executive Assistant to the CEO, managing emails, calendar, meeting, Following up on key projects and ensuring deadlines are met.
Order Processing
Inventory Plugin
Data Entry
Lead Generation
Customer Support
Email Marketing
Email Management
Request for Quotation
Bill of Materials
Customer Service
ERP Software
Christian G.
Glendale, California
$70/hr
4.9
62 jobs
I help U.S. businesses navigate SMS approval, deliverability, and compliance requirements - reducing the risk of carrier rejections, blocked traffic, and regulatory issues.
I specialize in A2P SMS compliance and deliverability, including 10DLC registration, Toll-Free Verification (TFN), and TCPA/CTIA consent audits, as well as diagnosing carrier-level delivery problems. My work focuses on aligning SMS programs with current carrier and regulatory expectations so they can operate and scale responsibly in the U.S. market.
If your messages are being rejected, filtered, or delayed - or youโre unsure whether your consent flow and use case will withstand carrier or legal reviewโI can help assess and correct the underlying issues.
What I Do
โข 10DLC brand & campaign registration (new submissions, rejections, reclassifications)
โข Toll-Free Verification (TFN) setup and resubmissions
โข TCPA / CTIA compliance audits (opt-in flows, disclosures, opt-out handling)
โข SMS deliverability diagnostics (carrier filtering, content flags, throughput limits)
โข Platform-specific guidance (Infobip, Twilio, GoHighLevel, ClickSend, SimpleTexting)
โข Compliance-aware SMS automation (webhooks, triggers, rate-limiting, quiet hours)
SMS
Lead Generation
Mobile Marketing
Compliance Consultation
Regulatory Compliance
Mobile Marketing Automation
Twilio
Nikhil C.
Palampur, India
$12/hr
5.0
27 jobs
I have extensive working experience in successfully registration in Twilio A2P 10DLC , Twilio text message marketing, Voice API, Bulk messaging, Twilio studio IVR Flows and ensuring businesses stay compliant while maximizing engagement. ๐๐ก๐๐ญ๐ก๐๐ซ ๐ฒ๐จ๐ฎโ๐ซ๐ ๐ฎ๐ฌ๐ข๐ง๐ ๐๐ฐ๐ข๐ฅ๐ข๐จ, Aircall, ๐๐จ๐๐ข๐ ๐ก๐๐๐ฏ๐๐ฅ (๐๐๐), ๐๐ฎ๐ฌ๐ญ๐๐๐ฅ๐ฅ.๐ข๐จ, ๐๐ฆ๐ซ๐ญ๐๐ก๐จ๐ง๐.๐ข๐จ, ๐๐ข๐ง๐ ๐๐๐ง๐ญ๐ซ๐๐ฅ, ๐๐จ๐๐จ๐ง๐ง๐๐๐ญ, ๐จ๐ซ ๐๐ฅ๐จ๐ฐ๐๐ซ๐, I streamline your SMS marketing strategy and make compliance seamless.
๐ What I Offer:
โ ๐๐๐ ๐๐๐๐๐ ๐๐๐ ๐ข๐ฌ๐ญ๐ซ๐๐ญ๐ข๐จ๐ง & ๐๐จ๐ฆ๐ฉ๐ฅ๐ข๐๐ง๐๐ โ I handle your TCR brand & campaign registration to prevent SMS filtering and ensure carrier approval.
โ ๐ง๐๐ฅ ๐๐๐๐ต๐ฒ๐ป๐๐ถ๐ฐ๐ฎ๐๐ถ๐ผ๐ป+ ๐ฉ๐ฒ๐ฟ๐ถ๐ณ๐ถ๐ฐ๐ฎ๐๐ถ๐ผ๐ป ๐๐๐๐ถ๐๐๐ฎ๐ป๐ฐ๐ฒ โ Get approved quickly with my step-by-step guidance.
โ ๐ง๐ฟ๐ผ๐๐ฏ๐น๐ฒ๐๐ต๐ผ๐ผ๐๐ถ๐ป๐ด ๐ฆ๐ ๐ฆ ๐๐ฎ๐บ๐ฝ๐ฎ๐ถ๐ด๐ป ๐ฅ๐ฒ๐ท๐ฒ๐ฐ๐๐ถ๐ผ๐ป๐ โ I resolve A2P 10DLC rejections and compliance issues.
โ ๐ง๐๐ถ๐น๐ถ๐ผ, ๐๐ผ๐๐ถ๐ด๐ต๐๐ฒ๐๐ฒ๐น & ๐๐ป๐ด๐ฎ๐ด๐ฒ๐๐ฎ๐ ๐ฆ๐ ๐ฆ ๐ฆ๐ฒ๐๐๐ฝ โ I integrate SMS marketing with your CRM and automation platforms.
โ ๐๐ฏ๐จ๐ข๐๐ข๐ง๐ ๐๐๐ ๐ ๐ข๐ฅ๐ญ๐๐ซ๐ข๐ง๐ & ๐๐๐ฌ๐ฌ๐๐ ๐ ๐๐๐ฅ๐ข๐ฏ๐๐ซ๐๐๐ข๐ฅ๐ข๐ญ๐ฒ ๐๐ฌ๐ฌ๐ฎ๐๐ฌโ I optimize messages to ensure high open and response rates.
๐ Results You Can Expect:
โ Seamless A2P 10DLC registration with minimal delays.
โ Increased SMS deliverability & engagement rates.
โ A compliant and professional SMS marketing setup.
โ Higher ROI from SMS campaigns.
๐ก Bonus Services:
โ Website Redesign for A2P Compliance โ Optimize your website with opt-in forms, clear T&Cs, and a trust-building design.
โ Custom Integrations & API Development โ Enhance your SMS workflows with custom automation & API integrations.
๐ Letโs Get Started!
Facing A2P 10DLC or TCR compliance issues? Letโs fix them today!
๐ฉ Click the "Send a Message" button, and let's get your SMS campaigns approved.
Twilio
Twilio API
Outbound Call
Dashboard
SMS Module Setup
SendGrid
VoIP
API Integration
Campaign Setup
SMS
Payment Functionality
RingCentral Glip
Aircall
Transferring Phone Calls
WhatsApp
Ad Campaign
ActiveCampaign
REST API
SMS Gateway
Call Scheduling
How it works
Post a job for freePost a job
Tell us what you need. Create your own job post or generate one with AI then filter talent matches.
Hire top talent fast
Consult, interview, and hire quickly, so you can meet the freelancers you're excited about.
Collaborate easily
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
KD
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
DM
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
KK
Katja Krohn
Summa Linguae
How do I hire a SignalR Specialist on Upwork?
You can hire a SignalR Specialist on Upwork in four simple steps:
Create a job post tailored to your SignalR Specialist project scope. Weโll walk you through the process step by step.
Browse top SignalR Specialist talent on Upwork and invite them to your project.
Once the proposals start flowing in, create a shortlist of top SignalR Specialist profiles and interview.
Hire the right SignalR Specialist 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 SignalR Specialist?
Rates charged by SignalR Specialists 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 SignalR Specialist on Upwork?
As the worldโs work marketplace, we connect highly-skilled freelance SignalR Specialists and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream SignalR Specialist team you need to succeed.
Can I hire a SignalR Specialist 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 SignalR Specialist proposals within 24 hours of posting a job description.