You will get Full Stack Developer for Real-Time Applications & WebSocket Systems
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Project details
You will get a production-grade real-time application built with WebSockets, Server-Sent Events, or Socket.io alongside React and Node.js. As a Senior Full Stack Developer, I architect low-latency systems where instant data updates are critical - from chat platforms and live dashboards to collaborative tools and notification engines.
Your solution will include real-time state synchronization, secure connection management, reconnection handling, and graceful fallback strategies. I design systems that achieve sub-100ms response times while maintaining stability under high concurrency.
My approach focuses on efficient event architecture, optimized frontend rendering, scalable connection handling, and observability to prevent performance degradation.
Whether you need live tracking, messaging, or collaborative real-time workflows - you receive a scalable system built to support thousands of concurrent users without sacrificing responsiveness.
Your solution will include real-time state synchronization, secure connection management, reconnection handling, and graceful fallback strategies. I design systems that achieve sub-100ms response times while maintaining stability under high concurrency.
My approach focuses on efficient event architecture, optimized frontend rendering, scalable connection handling, and observability to prevent performance degradation.
Whether you need live tracking, messaging, or collaborative real-time workflows - you receive a scalable system built to support thousands of concurrent users without sacrificing responsiveness.
Programming Languages
PHP, JavaScript, TypeScriptCoding Expertise
Performance Optimization, Security, DesignWhat's included $10,000
These options are included with the project scope.
$10,000
- Delivery Time 20 days
- Number of Revisions 1
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About Dmytro
Full Stack developer | Web Developer | Front End Developer
100%
Job Success
Zaporizhia, Ukraine - 11:43 am local time
As a Full Stack Developer and Front End Developer, I design and deliver complete end-to-end systems with a focus on long-term scalability and maintainable architecture. My role as a Full Stack Developer includes system design, backend logic, and infrastructure decisions, while as a Front End Developer I ensure fast, responsive, and conversion-focused interfaces that perform well under real production load.
What we deliver for our clients:
✅ SaaS products supporting 30,000+ active users with real-time collaboration features
✅ Platforms processing over 70,000 API requests per day
✅ Automation systems that reduce manual workflows by 50–65%
✅ Scalable architectures designed to handle 5–8× traffic growth without redesign
🔁 What I Do
📦 End-to-End Application Development (Full Stack Developer / Front End Developer)
As a Full Stack Developer, I build complete systems from scratch, including architecture decisions and deployment strategies. As a Front End Developer, I focus on UI structure, performance, and usability in real production environments.
🔹 SaaS platforms
🔹 Admin dashboards & internal toolsefficiency
🔹 Real-time systems
🔹 Multi-tenant architectures
🔹 Subscription & billing systems
Across all projects, I work as a Full Stack Developer responsible for system consistency from frontend to backend.
🎨 Frontend Engineering (Front End Developer focus)
As a Front End Developer, I build interfaces that remain stable under heavy usage and complex state changes, while aligning closely with backend systems built by Full Stack Developers.
🔹 React / Next.js applications with reusable architecture
🔹 State management systems
🔹 Tailwind & UI systems
🔹 Performance optimization
🔹 Real-time UI updates connected to Full Stack Developer event systems
The goal of every Front End Developer implementation is predictable performance and clean UI behavior.
⚙️ Backend Engineering (Full Stack Developer focus)
As a Full Stack Developer, I design backend systems with reliability, scalability, and observability in mind, ensuring smooth interaction with Front End Developer interfaces.
🔹 REST & GraphQL APIs
🔹 Microservices architectureindependently
🔹 Async workers
🔹 WebSockets and real-time systems
🔹 External API integrations
Each Full Stack Developer decision is made with long-term system evolution in mind.
🧩 Recent Experience (Full Stack Developer / Front End Developer)
✅ Multi-Tenant SaaS Platform (React + Node js + Python)
Lead Full Stack Developer for a platform serving 50K+ monthly users and 30+ organizations. ✔ 100K+ daily API calls • 25M+ records • Billing for $500K+/year
✅ Enterprise CRM (React + Node js)
Primary Full Stack Developer for a CRM used in 12 countries. ✔ Automated workflows cut manual work by 70% ✔ 200K+ processed events/day • 8 API integrations
✅ Scheduling Platform (React + Node js + Python)
As a Full Stack Developer, designed booking logic for 20K+ bookings/month. ✔ Real-time availability (<80ms) ✔ Payment flows processing $1M+ annually
✅ Data Platform (Python + React)
End-to-end ownership as a Full Stack Developer, delivered pipelines processing 3M+ records/day. ✔ 85% faster data prep • <1s dashboard latency
✅ Workflow Automation Engine (React + Node.js)
Built as a Full Stack Developer full automation replacing spreadsheets and manual operations. ✔ 40K+ tasks/day • 92% fewer errors • 70% less manual work
🤝 Why Clients Choose Me as a Full Stack Developer and Front End Developer
✔ True Full Stack Expertise
With 16+ years as a Full Stack Developer, I deliver complete systems, not fragments.
✔ Mastery of React, Node js, and Python
All three technologies are used deeply and consistently across my projects as a Full Stack Developer.
✔ GroupBWT Strength
🔹 Since 2009
🔹 100+ engineers
🔹 Dedicated Full Stack Developer division
🔹 Proven reliability and fast communication
✔ Business Impact
Clients report:
➡ 50% faster delivery ➡ 60% lower manual overhead ➡ 10× fewer bugs after release
All thanks to proper Full Stack Developer engineering principles.
💻 Tech Stack (Full Stack Developer / Front End Developer)
Languages: JavaScript, TypeScript, Python, PHP
Frontend: React, Next.js, Vue, Angular, Tailwind, Material UI
Backend: Node.js, NestJS, FastAPI, Flask, GraphQL, REST
Databases: PostgreSQL, MongoDB, MySQL, Redis
Cloud & DevOps: AWS, GCP, Azure, Docker, Kubernetes, CI/CD
Architectures: SaaS, microservices, event-driven systems
🚀 If you need a scalable web platform - let’s connect.
➡️ Invite me to your job, and I’ll help design and build a reliable production system.
Steps for completing your project
After purchasing the project, send requirements so Dmytro can start the project.
Delivery time starts when Dmytro receives requirements from you.
Dmytro works on your project following the steps below.
Revisions may occur after the delivery date.
Real-Time Architecture & Event Design
I analyze your real-time requirements (chat, tracking, dashboards) and define event flow, WebSocket/SSE strategy, scalability model, and latency targets (sub-100ms response time).
WebSocket Server & Connection Management
I implement WebSockets, Server-Sent Events, or Socket.io with secure authentication, connection lifecycle handling, reconnection logic, and horizontal scaling support.