I specialize in building high-performance iOS and Android applications using React Native (Expo & CLI) and Flutter. From MVPs and SaaS platforms to enterprise applications, I create scalable, user-friendly mobile apps that are fast, reliable, and easy to maintain.
My expertise includes Firebase, REST and GraphQL APIs, real-time chat, push notifications, maps, live tracking, WebSockets, WebRTC, and subscription systems. I also have experience developing backend services with Node.js, Express, and Laravel to deliver complete end-to-end solutions.
Over the years, I have built applications across healthcare, fintech, e-commerce, logistics, TravelTech, and SaaS. Whether you need a new app from scratch, feature enhancements, bug fixes, or App Store and Google Play deployment, I can help bring your ideas to life.
I follow clean coding practices and modern development workflows using AWS, Docker, Firebase, and CI/CD pipelines to ensure every application is secure, scalable, and production-ready.
Clients value working with me because I communicate clearly, pay close attention to detail, and consistently deliver high-quality results on time.
If you're looking for an experienced React Native and Flutter developer to build a reliable mobile application for iOS and Android, I'd be happy to discuss your projec
React Native
Flutter
Next.js
Node.js
Laravel
TypeScript
Firebase
PostgreSQL
MongoDB
REST API
GraphQL
Mobile App Development
iOS Development
Android App Development
OpenAI API
Twilio
Docker
CI/CD
Andrey P.
Izmir, Turkey
$40/hr
5.0
19 jobs
WebRTC, FFmpeg, AI, OpenCV, Streamin – I fix real-time video apps and have since 2005. 13,485 hours, 14 projects, 100% Job Success. Zero abandoned. ⚡ 𝗙𝗿𝗲𝗲 𝗣𝗥𝗗. 𝗠𝗩𝗣 𝗶𝗻 𝟳-𝟭𝟰 𝗱𝗮𝘆𝘀. 𝗙𝗿𝗲𝗲 𝗰𝗼𝗱𝗲 𝗿𝗲𝘃𝗶𝗲𝘄 𝗼𝗿 𝟮-𝘄𝗲𝗲𝗸 𝘁𝗿𝗶𝗮𝗹 𝗼𝗻 𝗮𝗻 𝗲𝘅𝗶𝘀𝘁𝗶𝗻𝗴 𝗰𝗼𝗱𝗲𝗯𝗮𝘀𝗲.
Netflix, HBO, EA, Nokia, the World Bank, and Harvard trust platforms I've built. These clients don't give second chances. Mine work.
⚠️ Invite me to your job – I reply within 15 minutes.
𝗦𝗲𝗹𝗲𝗰𝘁𝗲𝗱 𝗢𝘂𝘁𝗰𝗼𝗺𝗲𝘀
→ Speed.Space – live production platform for Netflix, HBO, EA, and Apex Legends. Multi-stream switching, real-time collaboration, pro codec control. Used at Paris Fashion Week and Live Nation events. Zero downtime.
→ ShortKlips – video project management for Nokia and the World Bank. 200K+ monthly video views. Cut client project turnaround by 30%.
→ VirtualCr8tive – hybrid event platform for Harvard University and U.S. Vets.
→ CloudDoctors – HIPAA-compliant telehealth on WebRTC. Built from concept through multiple release cycles.
→ YUUALL – WebRTC platform built across multiple versions, long-term engagement.
𝗪𝗵𝗲𝗿𝗲 𝗜'𝗺 𝗦𝘁𝗿𝗼𝗻𝗴𝗲𝘀𝘁
– Pipeline latency – I profile FFmpeg filter graphs and cut processing time without losing quality.
– WebRTC under load – jitter buffer, codec mismatch, TURN/STUN. I find which one is yours fast.
– AI on live video – TensorFlow inference under 80ms; object and audio recognition on live feeds.
– FFmpeg deep work – custom filter graphs, muxing, hardware acceleration (NVENC, VAAPI, VideoToolbox).
– Scale & reliability – systems handling 600M+ call minutes a month, fixed at the architecture level.
𝗦𝗽𝗲𝗰-𝗙𝗶𝗿𝘀𝘁 𝗔𝗴𝗲𝗻𝘁𝗶𝗰 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴
I work spec-first, not vibe-first. I write the full spec and architecture before any code. Then I drive AI agents: developer, tester, analyst – against strict guardrails to produce production-grade code. The hard real-time work I handle or verify myself: WebRTC pipelines, sub-second latency, on-device ML. You get AI speed with the stability of a senior engineer, 4-10× faster than classic coding.
𝗛𝗼𝘄 𝗜 𝗪𝗼𝗿𝗸
You describe what's broken or what you're building. I send back a diagnosis: the problem, the fix, the cost. Not a sales call. Then we scope the work together before either of us commits. My estimates average ~10% off actuals. I validate before building and run staged QA on every release.
𝗛𝗼𝘄 𝗬𝗼𝘂 𝗖𝗮𝗻 𝗪𝗼𝗿𝗸 𝗪𝗶𝘁𝗵 𝗠𝗲
1. Build from scratch – real-time video, AI, or streaming, end-to-end.
2. Drop in on your team – I take the hard video, AI, or WebRTC modules.
3. Rescue and modernize – fix slow or unstable platforms and ship to production.
I work inside the Fora Soft team – 51-200 engineers. If your project grows, a PM, QA, and more developers are already there. No solo freelancer who vanishes when scope expands.
𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 𝗜 𝗨𝘀𝗲 𝗗𝗮𝗶𝗹𝘆
◆ Real-time & video: WebRTC, LiveKit, FFmpeg, GStreamer, OpenCV, HLS/DASH, RTMP/RTSP, OBS, WebGL
◆ AI & ML: TensorFlow, PyTorch, OpenAI API, Whisper, YOLO, object and audio recognition
◆ Back-end: Node.js, Python, TypeScript, distributed systems, high-load APIs
◆ Cloud & infra: AWS, GCP, Docker, Kubernetes, CI/CD
𝗪𝗵𝘆 𝗙𝗼𝗿𝗮 𝗦𝗼𝗳𝘁
The team behind me: 914 jobs · $10M+ earned · 401K+ hours · 250+ projects since 2005 · 400+ clients across 17+ countries · Top WebRTC & Telecom Developer 2022 and 2024 · 1 of 400 devs passes our internal selection.
𝗖𝗹𝗶𝗲𝗻𝘁 𝗙𝗲𝗲𝗱𝗯𝗮𝗰𝗸
"We enjoyed working with Andrey. He saw himself as part of our team and proactively contributed. Even last-minute requests were handled in a timely, constructive way. Many of his proposals were better than our own ideas." – client, YUUALL (WebRTC platform)
⚠️ Describe what's broken. I'll tell you what's wrong, how to fix it, and what it costs.
WebRTC
FFmpeg
Video Stream
GStreamer
OpenCV
TensorFlow
YOLO
Machine Learning
Node.js
Python
React
JavaScript
TypeScript
Amazon Web Services
Real Time Stream Processing
API Integration
MongoDB
Video Processing
Software Development
Web Development
Mohammad S.
Antalya, Turkey
$25/hr
5.0
15 jobs
Looking for a developer who takes time to understand your business before building? You've found one.
✅ Trusted by FedEx, and enterprise Healthcare brands.
👨💻 Senior Full-Stack & React Native Engineer (10+ years) - financial, crypto, healthcare, fintech, gaming, and AI
📱 One of the few React Native devs who ships on-device computer vision - no cloud, no latency
🚀 I build from idea to production: architecture, API design, deployment, and debugging after launch
✔ Brought in by founders for MVP launches, enterprise rebuilds, and production fires
🤝 I work like a product partner — clear trade-offs, honest scope, no handoffs at "the AI part"
As a Full Stack Engineer, I'm usually brought in for MVP builds, product rebuilds, and "this is breaking in production" moments. The difference between hiring me and hiring someone who only ships features: I own the outcome, not just the ticket.
Here's what I do:
1. Full-Stack Development
🔹 End-to-end SaaS and MVP delivery - from architecture decision to production deploy
🔹 Clean code, clear documentation, and a codebase your team can actually maintain
2. React Native + On-Device Computer Vision
🔹 I build real-time CV pipelines directly inside React Native - OpenCV, image processing, object detection, and biometric flows running fully on-device
🔹 New Architecture (Fabric/TurboModules), native-grade performance, no cloud round-trip
3. Healthcare & Healthtech
🔹 I led the technical team at iCareBetter (Boston healthtech), building a platform that connects patients with vetted surgeons — location-aware provider search, Stripe payments, and EMR integration
🔹 Built a double-blinded peer vetting workflow where clinical surgeons review and certify each other, raising the quality bar across the network
🔹 HIPAA-aware development: secure data handling, access controls, and the reliability healthcare products actually require
4. Front-End (React, Next.js, TypeScript, Shadcn)
🔹 Dashboards, product UIs, and modular CMS - built to stay fast as you grow
🔹 SSR, performance audits, and PWA delivery (shipped this at FedEx at enterprise scale)
5. Back-End (Nest.js, Node.js and Laravel)
🔹 APIs, auth (Auth0, JWT), permissions, and business logic built for real usage - not demos
🔹 Background jobs, WebSocket services, and webhooks that hold up when requirements change
6. Database (PostgreSQL, MongoDB, Supabase)
🔹 Data modeling, migrations, and query performance - designed for production, not just MVP
🔹 GraphQL APIs and clean data layers wired to your front end
7. Cloud & Deployment (AWS, Vercel)
🔹 Reliable deployments with clean environments and predictable releases
🔹 AWS Beanstalk for real control; Vercel when you need speed and iteration
8. Fintech & Payment Systems
🔹 Stripe integration, EMR services, and full crypto wallet apps with Web3 signing flows
🔹 Ethereum, Bitcoin, and Binance network integrations - production-grade, not toy demos
9. AI & LLM Integrations
🔹 OpenAI and Anthropic integrations with rate limiting, cost control, and fallback logic
🔹 I wire the AI features into your actual product stack, not a bolt-on
Common projects I handle
SaaS product development — full 0 to Hero ownership
React Native apps with on-device CV and real-time features
MVP builds under real production constraints (Next.js + NestJS + PostgreSQL or Laravel)
Backend systems: auth, APIs, queues, business logic
Fintech and payment systems: Stripe, crypto wallets, Web3
AWS deployments and production stabilization
Performance audits and load testing (k6)
Codebase refactors and release safety improvements
LLM feature integration into existing products
Tools I use
✓ React, Next.js, TypeScript, Shadcn, Redux
✓ Node.js, NestJS, GraphQL, WebSocket
✓ PostgreSQL, MongoDB, Supabase
✓ AWS (Beanstalk), Vercel
✓ Auth0, Stripe, Sentry, Cypress
✓ OpenCV, React Native New Architecture (Fabric/TurboModules)
✓ OpenAI, Anthropic, Web3
If you're building a SaaS, launching an MVP, or fixing something broken in production, let’s chat. I’ll give you a straight-up answer on the scope, timeline, and if I'm the right person for the job.
Full-Stack Development
React
React Native
Next.js
Node.js
TypeScript
SaaS Development
AI App Development
JavaScript
Back-End Development
Computer Vision
GraphQL
PostgreSQL
MongoDB
Amazon Web Services
OpenCV
Supabase
Mobile App Development
API Integration
Web3
Bashar A.
Istanbul, Turkey
$25/hr
4.5
28 jobs
Hello there,
Thank you for visiting my profile.
Are you in search of a dedicated and experienced developer for your upcoming project? Look no further! With over 5 years of expertise, I've evolved from being a lead developer to a senior developer and now proudly operate as a full-time freelance mobile app and backend developer.
I specialize in a variety of technologies such as Laravel, Springboot, Native Android, native iOS, and the Flutter framework. My extensive experience and knowledge will ensure your project is completed to the highest standard.
Technical Skills:
✅ Proficient in Mobile App Development using Android, iOS and Flutter
✅ Skilled in React
✅ Skilled in Laravel and Spring boot
✅ Java, Kotlin, and Swift
✅ Skilled in Bug/Issue Trackers: Jira and Trello
✅ Expertise in Firebase
✅ Automation and Scripting
✅ Seamless Google API Integration
✅ Smooth integration of third-party libraries, plugins, and SDKs
Why Consider Me?
✔ Over 5 years of professional experience with 20+ projects successfully completed.
✔ Available round the clock, 7 days a week.
✔ Excellent communication skills with native English proficiency.
As a friendly and communicative developer, I prioritize customer satisfaction by paying great attention to detail and always striving to bring new and innovative ideas to each project. I am constantly studying and perfecting my skills to ensure I stay up-to-date with the latest trends and technologies.
I am fluent in English and comfortable with setting up calls to discuss project details. I love working with interesting people and would be excited to hear more about YOUR project.
Let's work together to bring your project to life!
WebRTC
Hybrid App Development
CSS
PHP
Java
Kotlin
Flutter
HTML
Dart
Firebase
Android App Development
Laravel
RESTful API
Model View ViewModel
Yusuf A.
Istanbul, Turkey
$45/hr
5.0
63 jobs
With over 20 years of experience in data networks and telecommunication systems, I specialize in delivering top-tier solutions for businesses in need of advanced IP and telecommunication setups. My expertise spans a wide range of services, including the installation, troubleshooting, integration, and consultancy of VoIP systems, with a particular focus on Asterisk and 3CX implementations.
I'm adept at designing and refining Interactive Voice Response (IVR) systems and call center solutions that capitalize on the latest AI integrations. This ensures that businesses not only stay current but also enhance user experiences. My work with AI applications extends to platforms like OpenAI and Google, integrating cutting-edge features for smarter telecommunication systems.
As an engineer proficient in a variety of Linux systems, I regularly implement and customize Asterisk-based software such as FreePBX, Elastix, and Vicidial. I also work with 3CX to provide robust IP telephony solutions. My portfolio includes successful integrations with CRM systems like Zoho, Vtiger, MS Dynamics, and Salesforce through REST or SOAP web services.
Whether you're looking to upgrade your IVR capabilities or explore AI-driven telecommunication solutions, I bring a comprehensive skill set and deep knowledge to ensure seamless deployments. Let’s work together to optimize your business communications with reliable and efficient systems.
Asterisk
3CX
FreePBX
VoIP
Call Center Software
IVR Software
VoIP Software
VoIP Administration
API Integration
AI Bot
Twilio API
Google APIs
Python
PHP
Perl
Huseyin O.
Istanbul, Turkey
$60/hr
5.0
6 jobs
I have 25 years of experience in software industry. Expecially I trust my own python language and linux os systems.
WebRTC
Linux System Administration
System Administration
Scripting
Ubuntu
Debian
Linux
CentOS
PHP
Python
Django
Laravel
JavaScript
Flask
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
“Upwork provides an umbrella-level of security. I can see a talent’s work history and ratings. I can hold payments in escrow. I can communicate through Upwork Messages instead of working through my email address.”
KD
Kim Darling
Emerald Tiger
“Upwork 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.”
DM
David Merry
Kinetic Investments
“Our very specific requirements can be a challenge—With Upwork, we’re able to access a bigger community to ensure the success of our projects.”
KK
Katja Krohn
Summa Linguae
How do I hire a WebRTC Developer in Turkey on Upwork?
You can hire a WebRTC Developer in Turkey on Upwork in four simple steps:
Create a job post tailored to your WebRTC Developer project scope. We'll walk you through the process step by step.
Browse top WebRTC Developer talent on Upwork and invite them to your project.
Once the proposals start flowing in, create a shortlist of top WebRTC Developer profiles and interview.
Hire the right WebRTC Developer for your project from Upwork, the world's largest work marketplace.
At Upwork, we believe talent staffing should be easy.
How much does it cost to hire a WebRTC Developer?
Rates charged by WebRTC 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 WebRTC Developer in Turkey on Upwork?
As the world's work marketplace, we connect highly-skilled freelance WebRTC Developers and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream WebRTC Developer team you need to succeed.
Can I hire a WebRTC Developer in Turkey within 24 hours on Upwork?
Depending on availability and the quality of your job post, it's entirely possible to sign up for Upwork and receive WebRTC Developer proposals within 24 hours of posting a job description.