Architecture That Scales. AI That Works.
With 12 years of experience in system design and full-stack engineering, I help businesses bridge the gap between experimental AI scripts and robust, production-grade applications. I don't just bolt on AI features; I architect secure, distributed, multi-tenant systems where AI is integrated as a core, scalable component from day one.
If you need a system optimized for performance, maintainability, and security from the first line of code, you're in the right place.
Core Expertise:
โ System Design & Microservices: I design distributed architectures that don't bottleneck under pressure. This includes implementing event-driven patterns with Apache Kafka for high-throughput messaging and managing complex data lifecycles across MongoDB, PostgreSQL, and Graph databases.
โ Agentic AI & Orchestration: Building stateful, multi-agent systems using LangGraph to handle complex, dynamic logic flows. As an early adopter of the Model Context Protocol (MCP), I leverage FastMCP to build high-performance servers that connect LLMs safely to your secure enterprise data.
โ LLM Engineering & Optimization: Moving beyond basic prompting. I focus on the heavy lifting: optimizing RAG pipelines, managing LLM encodings (tokenization and efficiency), and fine-tuning context windows to balance high accuracy with cost-efficiency.
โ Security & DevOps: Treating AI and MCP security as a first-class citizen, not an afterthought. My development workflows are rooted in Agile principles and backed by robust CI/CD pipelines, ensuring deployments are fast, automated, and secure.
๐ป Languages & Frameworks: Python, Go, Java (Spring Boot), TypeScript/JavaScript (Node.js, React, Angular), PHP (Laravel).
๐ง AI Ecosystem: LangGraph, FastMCP, LLM Encodings, RAG Pipelines, Agentic Workflows.
๐๏ธ Data & Streaming: Apache Kafka, MongoDB, PostgreSQL, Vector Databases, Neo4j (Graph).
๐ก๏ธ DevOps & Security: AI/MCP Security, CI/CD, Docker, Agile Methodologies.
๐ค Letโs Build Something Robust
I am most effective when untangling complex problems that require a deep, holistic understanding of how entire systems interact. Whether you are looking for a senior partner to design a secure AI ecosystem from scratch or you need to scale a legacy application into a modern, distributed architecture, let's talk.
โ Available for:
๐น Architectural Audits
๐น System Design Consultations
๐น Full-Scale Development
AI Agent Development
Python
PHP
Java
Golang
Ruby
WordPress
React
Node.js
MongoDB
Flask
JavaScript
Laravel
MySQL
Angular
Security Engineering
LLM Prompt Engineering
Tarin M.
Dhaka, Bangladesh
$20/hr
4.2
122 jobs
With 15+ years of experience in extensive list of technologies, I am able to provide you with high quality, sophisticated, robust solutions that are well tested, efficient, accurate.
I shine at diving into your existing codebase, find the source of issues, and resolve them without breaking another thing.
If you have old legacy code, or a vibe coded program that is not working, I can fix them up for you to clean and conscious code.
Need to automate? Got your back.
Data processing, parsing complex PDF? Sure thing!
You need it, if there is solution for it, I can get it done.
Technologies I am currently working with:
Rust, Python, Axum, SQLAlchemy, FastAPI, Django, PostgreSQL, SQLite, HTMX, ReactJS, Tailwindcss, RunPod, AI/LLM, Svelte
I am a passionate software engineer who enjoys challenges, and finding solutions. I have extensive experience of diving into existing code, finding issues, and resolve them.
As a hardworking, resourceful engineer who also loves automating things, that usually saves a lot of time, I can provide the best service for the most reasonable costing.
Besides developing data mining applications, automation tools, Websites, I have personal interest in Open Source projects.
Here's a list of, but not limited to, responsibilities I have successfully fulfilled:
โพ๏ธ Desktop application
โพ๏ธ Refactoring
โพ๏ธ Prompt Engineering (Local LLM)
โพ๏ธ Machine Learning
โพ๏ธ Web development
โพ๏ธ Web Scrapers
โพ๏ธ Email processing
โพ๏ธ Distributed applications
โพ๏ธ ETL
โพ๏ธ Automation
โพ๏ธ Server configuration and deployments
โพ๏ธ Bug fixing and code improvements
โพ๏ธ High Performance computing
Let's get in touch.
Django Stack
Tailwind CSS
Data Mining
Scripting
Python
Rust
Web Application
RESTful API
Java
TypeScript
GUI Design
FastAPI
PostgreSQL
SQLAlchemy
SQLite
Spring Boot
Web Scraping
Md Sohel R.
Dhaka, Bangladesh
$49/hr
4.9
120 jobs
$1M+ earned, 17,000+ hours, ๐๐จ๐ฉ ๐๐๐ญ๐๐ ๐๐ฅ๐ฎ๐ฌ (top 3% on Upwork). I'm a full-stack engineer and software architect with ๐๐ ๐ฒ๐๐๐ซ๐ฌ ๐จ๐ ๐๐ฑ๐ฉ๐๐ซ๐ข๐๐ง๐๐. I build AI products, HealthTech platforms, real-time video systems, and SaaS, plus the cloud infrastructure that keeps them fast under real load.
โข 100% Job Success, 95 jobs completed
โข Top Rated Plus: top 3% of Upwork talent
โข 17,000+ hours worked, $1M+ earned
โข Excellent communication, verified by Upwork
๐๐ & ๐๐๐ ๐๐ง๐ ๐ข๐ง๐๐๐ซ๐ข๐ง๐
Production LLM apps: chat assistants, RAG pipelines, and AI agents built on OpenAI and Claude (Anthropic) APIs. Shipped work includes AI Mate and Genius (AI assistants) and TissueConnect.ai, an Azure-based medical imaging AI platform.
๐๐๐๐ฅ๐ญ๐ก๐๐๐๐ก, ๐ ๐๐๐ & ๐๐๐๐๐
I implement HL7 FHIR for interoperable exchange of patient and clinical data with EHR systems, with HIPAA-compliant handling of protected health information end to end. On TissueConnect.ai I built FHIR integration into an Azure-based medical imaging AI platform.
๐๐๐๐ฅ-๐๐ข๐ฆ๐ ๐๐ข๐๐๐จ & ๐๐๐๐๐๐
Low-latency WebRTC is a core strength: telehealth consults, live classes, remote proctoring, and synchronized multi-party sessions. I built Daency, where every student in a class follows the same video in real time with their trainer.
๐๐ฅ๐จ๐ฎ๐, ๐๐๐ฏ๐๐ฉ๐ฌ & ๐๐จ๐๐ ๐๐๐ฅ๐๐ง๐๐ข๐ง๐
AWS (EC2, S3, Lambda, VPC, Route53, CloudFront, ALB/NLB), Azure, Google Cloud, DigitalOcean. Load balancing, auto-scaling, NGINX, Docker, CI/CD (GitHub Actions, Jenkins). I've run infrastructure for an SMS platform handling millions of texts a month, and high-stakes online exams that cannot go down.
๐ ๐ฎ๐ฅ๐ฅ ๐๐ญ๐๐๐ค & ๐๐จ๐๐ข๐ฅ๐
TypeScript, React, Next.js, Vue, Node.js. REST and GraphQL APIs backed by MongoDB, PostgreSQL, MySQL, and Redis. Mobile and desktop with Flutter, React Native, and Electron.
๐๐ซ๐๐ก๐ข๐ญ๐๐๐ญ๐ฎ๐ซ๐ ๐๐ญ ๐๐๐๐ฅ๐
Software architect for TestReach since 2014, an online assessment and remote proctoring platform used by leading certification bodies. Co-founder of NerdDevs (20+ engineers), so when your project needs more than one pair of hands, I can bring a vetted team.
๐๐จ๐ฐ ๐ ๐ฐ๐จ๐ซ๐ค
โข I don't just write code. ๐ผ ๐ ๐๐๐ฃ๐ ๐๐ข๐ ๐๐๐๐ ๐ ๐๐๐๐๐๐๐๐ .
โข TDD and proven design patterns: reliable, maintainable, scalable.
โข Honest, clear communication. You'll always know where things stand.
๐ ๐ ๐จ๐จ๐ ๐๐ข๐ญ ๐ข๐ ๐ฒ๐จ๐ฎ'๐ซ๐...
An ambitious startup, a healthcare or EdTech company, or a business owner who needs a senior engineer to build an AI product, ship a compliant health platform, scale real-time video, or untangle infrastructure.
๐๐๐๐ ๐๐ ๐คโ๐๐ก ๐ฆ๐๐ข'๐๐ ๐๐ข๐๐๐๐๐๐ ๐๐๐ ๐คโ๐๐๐ ๐๐ก โ๐ข๐๐ก๐ , ๐๐๐ ๐ผ'๐๐ ๐ก๐๐๐ ๐ฆ๐๐ข ๐๐ฅ๐๐๐ก๐๐ฆ โ๐๐ค ๐ผ'๐ ๐๐๐๐๐๐๐โ ๐๐ก.
Node.js
DevOps
MongoDB
AI Development
Amazon Web Services
Flutter
AI Agent Development
OpenAI API
Vue.js
Python
TypeScript
MySQL
React
Microsoft Azure
Google Cloud Platform
PostgreSQL
AI Chatbot
FHIR
WebRTC
Twilio API
Moshiour R.
Dhaka, Bangladesh
$80/hr
5.0
39 jobs
I build agentic AI systems that run in production. Not demos.
Flagship client: Princess Cruises (Carnival Corp, Fortune 500) โ sole AI architect across 17+ deployed ship environments.
Platform 1: Multi-agent BDI operations assistant. Custom orchestration written from scratch โ no framework wrappers. LLM planning, guardrails, human-in-the-loop approvals, self-hosted Ollama at the ship edge. Fully air-gap compatible.
Platform 2: Fleet-wide agentic assistant. Hybrid-retrieval RAG with 34,369 Confluence pages indexed into ChromaDB. MCP tooling invoking 40+ microservices in real time.
15+ years of Java and Spring Boot across 40+ microservices in enterprise production. 100+ P1 incidents resolved โ I know what breaks at scale and why.
Most AI engineers are Python-only and treat your existing backend as a black box.
I architect AI directly into enterprise Java infrastructure โ agent tooling, RAG pipelines, and LLM orchestration integrated into the systems you already run.
$400K+ earned on Upwork. Top Rated. 12,755 hours logged.
I also run TechyOwls, my own AI SaaS studio โ because I prefer shipping over advising.
SnapForge โ screenshot and agentic data extraction API. LangGraph-based. Live with paying customers.
Isolate โ AI image processing platform. Background removal, upscaling, virtual try-on, local vision LLMs.
LLM Bridge โ WireGuard-tunneled inference between VPS and home GPU. Enterprise-grade inference without cloud lock-in.
Stack: LangGraph, LangChain, MCP, ReAct, BDI multi-agent, ChromaDB, pgvector, self-hosted Ollama, Llama 3.x Vision, Claude, OpenAI. Java, Spring Boot, Python, FastAPI, TypeScript. Docker, Kubernetes, Ansible, Prometheus, Grafana. Oracle, PostgreSQL, Redis, Kafka.
WHAT YOU GET
When you bring me in, you get someone who has already made the architecture decisions you're about to make โ at Fortune 500 scale, under real compliance pressure, in production environments where failure costs money.
I embed as technical lead alongside your existing team or execute independently โ both at the same standard. System design, agent orchestration, RAG pipeline, security review, stakeholder communication. You focus on the product. I keep the AI from becoming a liability.
WHERE I ADD THE MOST LEVERAGE
Teams past the prototype stage that need production-grade AI โ systems that survive security review, scale to real users, and run in regulated or air-gapped environments. Enterprise codebases where AI needs to integrate with existing Java/microservices infrastructure,
not replace it.
Currently accepting a limited number of long-term engagements. Fixed-scope architecture audits also available.
Python
Spring Boot
OpenAI API
LangChain
Retrieval Augmented Generation
AI Agent Development
FastAPI
Vector Database
AI Chatbot
Machine Learning
Prompt Engineering
Large Language Model
Ashraful I.
Sylhet, Bangladesh
$13/hr
5.0
2 jobs
Over the last 3 years, I have developed a wide range of Software and Mobile App using Apache Cassandra, Apache Solr, Apache Hadoop, Apache Spark, C, Java and Android. Now i am working for IPVision Canada Inc. as Big Data developer and I am seeking opportunities to build more App and Software.
I also have some experience in the following areas: Shell Script, MySQL, SQLite, Regex, Python, PHP, OpenGL Glut, Game Developing and Software Testing
Apache Solr
Apache Cassandra
Java
Apache Spark
Android App Development
C
Apache Hadoop
Machine Learning
MATLAB
Sagar R.
Khulna, Bangladesh
$40/hr
5.0
81 jobs
๐ Winner : Best ERP Software Development Specialist 2025 โ South Asia
More than 15 years+ experienced in requirement analysis, programming, software designing, development, building, testing, deployment and maintenance with php,java and its associated technologies including MVC and WEB API, MY SQL , AWS and Linux/Windows environment including cloud computing and Web technologies including Php, HTML5, CSS3, Java Script, React JS and Jquery in off shore software developing companies.
Skills and accomplishments:
Problem solving experience in different areas of Computer Science. Professional work experience in System design and development Professional Knowledge in Agile Scrum and Test driven development. Experience in design, development and testing in Object-oriented technology, Desktop/Web/Mobile based application in different architectures. Good understanding of Object-Oriented principles and software engineering practices Skilled programming experience in PHP/Java and its associated technologies Understanding and experience in Relational Database Management Systems: MySql, Mysql lite, Apace/Ningix Server/AWS, and MongoDb Professional knowledge in White-Box, Black-Box testing, Usability testing. Quick Learning ability, ability to manage and mingle with team, interpersonal skills.
Specialties:
Programming Languages: C/C++,Java,J2EE,Dart ,Rust
Web3: Blockchain , Solana , Smart Contract
Database : Aws/Linux Server, MySQL,Mysql Lite
No SQL : Mongo DB
Testing Tools: PHP unit, Junit, Robotium Android Testing Tool
Scripting Language: PHP, Javascript
Java Framework : JAVA swing, Android
Java Script Framework: React JS, VueJs, JQuery, Google chart
Php Framework : CodeIgniter, Laravel, Yii - framework ,
CSS Framework : Bootstarp Framework
Markup Languages : HTML, XHTML, XML , WML , WSDL, CSS
APIs (Facebook/ Twitter/ Google/ Stripe/ PayPal/ Mailchimp etc.)
Protocol : HTTP, TCP, UDP, SMP
Servers : Apache, Ningix , Aws
Modeling and documentation tools: Rational Rose, java doc, UML
Requirement engineering documentation tools: Rational Requisite pro
Operating Systems: Windows , Linux
Version Control Tools: GitHub, SVN, TFS, Putty
Docker
Thank you for viewing my profile. I look forward to the opportunity to collaborate with you."
JavaScript
Node.js
Next.js
Laravel
PHP
React
Tailwind CSS
RESTful API
Docker
TypeScript
MySQL
PostgreSQL
MEAN Stack
Full-Stack Development
Blockchain
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