Technical Services & Expertise
Production-grade engineering services from a Senior Developer with 10+ years of experience building scalable systems for startups and enterprises.
$ ls ai-ml/ 17 services
AI Chatbots
Building chatbots that actually understand context and deliver real value
AI Code Assistants
Building AI tools that make developers 10x more productive
AI Strategy
AI strategy grounded in what actually works in production
AI Automation
Automating knowledge work that was previously impossible to automate
Document AI
Turning unstructured documents into structured, actionable data
Google Gemini
Building with Google's most capable AI model for enterprise applications
LLM Fine-tuning
Making AI models experts in your specific domain
LLM Observability
Making AI systems debuggable, traceable, and optimizable
Semantic Search
Building search that understands what you mean, not just what you type
AI Agents
Building AI that doesn't just answer questions, it gets things done
Anthropic Claude
Enterprise-grade AI with Claude's long context and safety features
LangChain
Building production-grade LLM applications that actually work in the real world
MCP (Model Context Protocol)
Connecting AI agents to the tools and data they need
OpenAI & LLMs
Production-grade LLM integrations that actually work in enterprise
Prompt Engineering
Crafting prompts that make AI reliable and cost-effective
RAG Systems
Turn your documents into intelligent, searchable knowledge bases
Vector Databases
Powering semantic search and AI memory with vector embeddings
$ ls backend/ 30 services
API Development
Building APIs that developers love to use
API Security
Building authentication systems that are secure AND usable
Background Jobs
Building job systems that handle millions of tasks reliably
CRM Integration
Connecting your CRM to everything else in your tech stack
Data Pipelines
Building data pipelines that process millions of events reliably
E-commerce
Building e-commerce platforms that scale from startup to $30M+ in orders
EdTech
Building education platforms that engage learners and scale globally
Fintech
Building financial systems that handle millions in transactions securely
HealthTech
Building healthcare software that meets compliance requirements and saves lives
IoT Backend
Building IoT platforms that handle millions of sensor readings reliably
LegalTech
Building legal technology that lawyers actually trust
Performance Optimization
Turning 5-second responses into 50-millisecond responses
Real-time Systems
Building live applications with sub-200ms latency that scale
SaaS Backend
Building SaaS platforms that scale from MVP to enterprise
Salesforce
Building Salesforce solutions that integrate smoothly with your business
MVP Development
Ship your MVP in weeks, not months, without cutting corners that matter
Web Scraping
Turning websites into structured data pipelines that just work
Celery
Reliable distributed task processing for Python applications
Django
Battle-tested Python framework for rapid, secure development
FastAPI
Modern, fast Python APIs built for scale and maintainability
Flask
Lightweight, flexible Python web development
GraphQL
Flexible, efficient APIs that give clients exactly what they need
gRPC
High-performance RPC framework for microservices communication
Java
Enterprise-grade Java applications built for reliability
Node.js
High-performance JavaScript backends for modern applications
PHP
Building reliable web applications and backend systems with modern PHP
Python
Production-grade Python backends from an engineer who's shipped at scale
REST API
Well-designed APIs that developers love to use
Spring Boot
Enterprise-grade Java backends built for reliability and scale
TypeScript
Type-safe JavaScript for reliable, maintainable applications
$ ls cloud/ 6 services
CI/CD
Shipping code faster with automated, reliable pipelines
AWS
Production-grade cloud infrastructure that scales with your business
Docker & Kubernetes
Containerized deployments that scale reliably
GitHub Actions
Automated CI/CD pipelines for fast, reliable deployments
Google Cloud Platform
Modern cloud infrastructure on Google's global network
Terraform
Infrastructure as code for reproducible, version-controlled deployments
$ ls databases/ 6 services
Database Tuning
Turning 5-second queries into 50-millisecond queries
MySQL
Turning slow databases into high-performance systems
Elasticsearch
Powerful search and analytics for your data
MongoDB
Flexible NoSQL database for modern applications
PostgreSQL
High-performance database architecture for data-intensive applications
Redis
Lightning-fast caching and real-time data for high-performance applications
$ ls architecture/ 9 services
Fractional CTO
Senior technical leadership for companies that need expertise, not headcount
Legacy Modernization
Modernizing legacy systems without breaking the business
Multi-Tenant Architecture
Building platforms where every tenant feels like they have their own system
Architecture Review
Find problems before they find you
Technical Due Diligence
Know what you're buying before you buy it
Apache Kafka
Real-time event streaming for data-driven applications
Microservices
Scalable, maintainable distributed systems that grow with your business
RabbitMQ
Reliable message queuing for microservices communication
Serverless
Pay-per-execution compute without server management
$ ls frontend/ 4 services
Next.js
Full-stack React framework for production applications
React
Modern, performant frontends that users love
Tailwind CSS
Rapidly build modern, responsive UIs with utility-first CSS
Vue.js
Progressive, approachable JavaScript framework
Hire a Senior Software Engineer
I’m Nazmul Hoque Khan (Shuvro), a senior software engineer with 10+ years of experience building production systems for startups and enterprises across the US, Europe, and the Middle East.
I specialize in backend development, AI/ML integration, and cloud architecture. My systems have served millions of users at companies like Anaqua, Flowrite, Pipelinepharma, and Spiio.
Core Service Areas
🤖 AI & Machine Learning
Build production-ready AI systems: LLM applications, RAG pipelines, AI agents, and intelligent automation. OpenAI, Claude, Gemini, LangChain expertise.
Popular: LangChain · RAG Systems · AI Agents · OpenAI Integration
⚡ Backend Engineering
Scalable APIs, microservices, and production systems. Python (FastAPI, Django), Node.js, databases, and high-performance backends.
Popular: FastAPI · Python Backend · REST APIs · PostgreSQL
☁️ Cloud & DevOps
Cloud architecture and infrastructure automation. AWS, GCP, Docker, Kubernetes, Terraform, and CI/CD pipelines.
Popular: AWS Architecture · Docker & Kubernetes · CI/CD Pipelines
👔 Technical Consulting
Technical leadership and strategic advisory. Fractional CTO, architecture review, due diligence, and technology strategy.
Popular: Fractional CTO · Architecture Review · Due Diligence
Why Work With Me
- Production Experience: Built systems handling millions of requests at scale
- Full Lifecycle: From architecture design to deployment and maintenance
- AI Specialist: Deep expertise in LLM integration, not just API wrappers
- Communication: Clear, proactive updates, no surprises
- Flexibility: Available for projects, retainers, or fractional CTO engagements
What Clients Say
“Nazmul built our high-performance AI backend with FastAPI. His expertise in async Python and LangChain integration helped us scale to handle millions of patent documents.”
Engineering Lead, Anaqua
“He architected our FastAPI services to handle 10x traffic growth. Clean code, excellent documentation, and deep understanding of async patterns.”
CTO, Flowrite
“Our RAG system processes millions of legal documents with high accuracy. Nazmul delivered a production-grade solution that our IP professionals rely on daily.”
Director of AI, Anaqua
“Nazmul built our entire IoT data pipeline in Python. reliable, well-tested code that processed millions of sensor readings reliably.”
Technical Lead, Spiio
Flexible Pricing
I offer competitive, transparent pricing with multiple engagement options:
- MVP Projects: Fixed-price from $3,499
- Prepaid Hours: Effective rates from $45-60/hour
- Monthly Retainers: $6,499/month for dedicated support
How to Get Started
- Browse my services below to find what matches your needs
- Check pricing options for engagement models
- Schedule a discovery call to discuss your project
I typically respond within 24 hours and can start most projects within 1-2 weeks.
Complete Service Directory
AI & Machine Learning
LangChain Development · RAG Systems · AI Agents · OpenAI Integration · Claude Integration · Google Gemini · AI Chatbots · Prompt Engineering · LLM Fine-tuning · LLM Observability · Vector Databases · Semantic Search · Document AI · AI Workflow Automation · AI Code Assistants · MCP Development · AI Strategy Consulting
Backend Frameworks
Python Backend · FastAPI · Django · Flask · Node.js · TypeScript · Spring Boot · Java · PHP
APIs & Integration
API Development · REST APIs · GraphQL · gRPC · API Security · CRM Integration · Salesforce
Databases
PostgreSQL · MongoDB · MySQL · Redis · Elasticsearch · Database Tuning
Cloud & Infrastructure
AWS Architecture · GCP · Docker & Kubernetes · Terraform · Serverless · CI/CD Pipelines · GitHub Actions
Architecture & Messaging
Microservices · Multi-Tenant · Celery · Kafka · RabbitMQ · Background Jobs · WebSockets · Data Pipelines
Frontend
React · Next.js · Vue.js · Tailwind CSS
Industry Solutions
SaaS Backend · Startup MVP · E-commerce · FinTech · HealthTech · EdTech · LegalTech · IoT Backend
Consulting & Advisory
Fractional CTO · Architecture Review · Technical Due Diligence · Legacy Modernization · Performance Optimization · Web Scraping
💰 Transparent Pricing
Flexible engagement options: MVP projects from $3,499, prepaid hours from $45/hr effective, monthly retainers at $6,499/month.
Need Custom Development?
Don't see exactly what you need? I work on custom projects across the full stack.