You will get High-Performance Real-Time Backends & APIs Built with Node.js
Rising Talent
Project details
As a Backend Engineer on Tezdealz, I developed a scalable, high-performance backend for a car sales and purchase platform. Built with Node.js, Express.js, and MongoDB, the system included real-time communication via Socket.io and asynchronous processing through RabbitMQ. I also implemented smart data scraping to auto-populate listings from external sources. The architecture ensured seamless interactions between users and enabled a fluid, responsive user experience.
Key Responsibilities & Contributions:
• Designed and implemented microservices using Node.js and Express.js
• Integrated real-time updates with Socket.io and message queues via RabbitMQ
• Developed scraping tools for dynamic content aggregation
• Structured scalable data models using MongoDB
• Collaborated closely with the React Native team to support cross-platform access
Project Highlights:
• Built a real-time, event-driven system from scratch
• Optimized backend performance for scalability and responsiveness
• Experience integrating data pipelines and asynchronous workflows
• Delivered a backend architecture ready for production at scale
Key Responsibilities & Contributions:
• Designed and implemented microservices using Node.js and Express.js
• Integrated real-time updates with Socket.io and message queues via RabbitMQ
• Developed scraping tools for dynamic content aggregation
• Structured scalable data models using MongoDB
• Collaborated closely with the React Native team to support cross-platform access
Project Highlights:
• Built a real-time, event-driven system from scratch
• Optimized backend performance for scalability and responsiveness
• Experience integrating data pipelines and asynchronous workflows
• Delivered a backend architecture ready for production at scale
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Performance Optimization, Security, DesignWhat's included
| Service Tiers |
Starter
$150
|
Standard
$350
|
Advanced
$700
|
|---|---|---|---|
| Delivery Time | 3 days | 7 days | 12 days |
Number of Revisions | 2 | 2 | 2 |
Number of Pages | 3 | 5 | 10 |
Design Customization | - | - | - |
Content Upload | |||
Responsive Design | - | - | - |
Source Code |
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AH
Alex H.
Jun 2, 2025
Developer Wanted To Join Our Back-End Team
AL
Austin L.
May 8, 2025
Need Senior Full-Stack Developer to Fix a Feature and Optimize Backend (Next.js + PostgreSQL)
Azeem did an exceptional job — he not only fixed the unreliable save/load functionality in my app, but also quickly identified and resolved performance issues I didn’t even know existed. His debugging skills are top-tier, he worked fast, communicated clearly throughout, and delivered clean, well-documented code. Highly recommended if you need a full-stack expert who genuinely cares about quality, speed, and performance.
About Azeem
Senior Elixir & Phoenix Engineer | AI, RAG & LangGraph Specialist
100%
Job Success
Lahore, Pakistan - 3:25 pm local time
My core expertise includes:
Elixir, Phoenix, Phoenix LiveView, LLMs, RAG, AI Agents, LangChain, LangGraph, OpenAI, Claude, Gemini, PostgreSQL, Redis, and AWS.
⚡ 𝐖𝐇𝐀𝐓 𝐈 𝐁𝐔𝐈𝐋𝐃
⤞ Elixir & Phoenix applications
⤞ Phoenix LiveView & real-time systems
⤞ AI Agents & multi-agent systems
⤞ LLM applications & AI integrations
⤞ RAG pipelines & AI knowledge bases
⤞ LangChain & LangGraph workflows
⤞ REST & GraphQL APIs
⤞ SaaS & scalable backend systems
⤞ Microservices & distributed systems
🚀 𝐒𝐄𝐋𝐄𝐂𝐓𝐄𝐃 𝐖𝐎𝐑𝐊
→ 𝐄𝐧𝐭𝐞𝐫𝐩𝐫𝐢𝐬𝐞 𝐋𝐞𝐠𝐚𝐥 𝐀𝐈: Agent Router connecting specialized AI agents using LangGraph, Gemini & pgvector.
→ 𝐋𝐞𝐠𝐚𝐥 𝐑𝐀𝐆 𝐏𝐢𝐩𝐞𝐥𝐢𝐧𝐞: Clause-aware retrieval with source citations for better accuracy and traceability.
→ 𝐀𝐮𝐭𝐨𝐧𝐨𝐦𝐨𝐮𝐬 𝐀𝐠𝐞𝐧𝐭 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦: AI agents with tool-use budgets, spending limits, automatic termination & action logging.
→ 𝐑𝐞𝐚𝐥-𝐓𝐢𝐦𝐞 𝐍𝐅𝐓 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦: Phoenix Channels supporting thousands of concurrent viewers with Ethereum event synchronization.
→ 𝐅𝐢𝐧𝐭𝐞𝐜𝐡 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦: Real-time portfolios, transaction ledger, role-based access & Stripe billing.
🧠 𝐀𝐈 & 𝐋𝐋𝐌 𝐒𝐓𝐀𝐂𝐊
RAG • AI Agents • Agentic AI • LLM Development • LangChain • LangGraph • OpenAI • Anthropic Claude • Google Gemini • pgvector • Pinecone • Vector Search • Multi-Agent Systems
⚙️ 𝐁𝐀𝐂𝐊-𝐄𝐍𝐃 & 𝐈𝐍𝐅𝐑𝐀𝐒𝐓𝐑𝐔𝐂𝐓𝐔𝐑𝐄
Elixir • Phoenix • Phoenix LiveView • Erlang/OTP • PostgreSQL • Redis • Node.js • TypeScript • Python • REST • GraphQL • WebSockets • Docker • Kubernetes • AWS • CI/CD
🎯 𝙒𝙃𝙔 𝘾𝙇𝙄𝙀𝙉𝙏𝙎 𝙒𝙊𝙍𝙆 𝙒𝙄𝙏𝙃 𝙈𝙀
I can take a project from requirements → 𝙖𝙧𝙘𝙝𝙞𝙩𝙚𝙘𝙩𝙪𝙧𝙚 → 𝙙𝙚𝙫𝙚𝙡𝙤𝙥𝙢𝙚𝙣𝙩 → 𝙩𝙚𝙨𝙩𝙞𝙣𝙜 → 𝙙𝙚𝙥𝙡𝙤𝙮𝙢𝙚𝙣𝙩 without losing sight of the business goal.
If you have a 𝙧𝙤𝙪𝙜𝙝 𝙞𝙙𝙚𝙖, 𝙚𝙭𝙞𝙨𝙩𝙞𝙣𝙜 𝙥𝙧𝙤𝙙𝙪𝙘𝙩, 𝙤𝙧 𝙩𝙚𝙘𝙝𝙣𝙞𝙘𝙖𝙡 𝙘𝙝𝙖𝙡𝙡𝙚𝙣𝙜𝙚, send it over.
Let’s build something that works beyond the demo.
𝗞𝗘𝗬𝗪𝗢𝗥𝗗𝗦: Elixir, Phoenix Framework, Phoenix LiveView, Erlang, OTP, BEAM VM, Backend Development, Backend Engineer, API Development, REST API, GraphQL, Ecto, Phoenix Channels, GenServer, Oban, Distributed Systems, Concurrent Programming, High Performance Applications, High Availability Systems, Event-Driven Architecture, Microservices, SaaS Development, Scalable Web Applications, Custom Software Development, Enterprise Software Development, PostgreSQL, Redis, Elasticsearch, Docker, Kubernetes, AWS, Google Cloud Platform (GCP), CI/CD, GitHub Actions, Linux, Nginx, WebSockets, JWT Authentication, OAuth, API Integration, Stripe Integration, Twilio API, Artificial Intelligence, AI Development, Generative AI, OpenAI API, ChatGPT API, GPT-5, Claude AI, Gemini AI, LLM Development, Large Language Models, AI Agents, Agentic AI, AI Automation, AI Workflow Automation, AI Chatbot Development, AI Assistant Development, AI Integration, MCP (Model Context Protocol), Prompt Engineering, Function Calling, Retrieval-Augmented Generation (RAG), RAG Development, LangChain, Python, FastAPI, Django, Flask, Automation, Workflow Automation, Business Process Automation, CRM Automation, Email Automation, n8n, JavaScript, TypeScript, Node.js, React.js, Next.js, Full Stack Development
Steps for completing your project
After purchasing the project, send requirements so Azeem can start the project.
Delivery time starts when Azeem receives requirements from you.
Azeem works on your project following the steps below.
Revisions may occur after the delivery date.
Project Development
I begin working on the project according to the agreed plan and timeline. Regular updates are provided through the workroom to keep you informed of the progress.
Client Reviews & Provides Feedback
Once the project is complete, the client reviews the work and provides any necessary revisions or approvals.