Develop
Backend systems
Designing product-critical APIs, workers, data flows, and operational services that stay boring under pressure.PythonGoFastAPIPostgreSQLRedis
Hello! I'm
HojayfaRahman
I buildBackendsAgentsProducts
I build
About me
IturnmessyðŸ˜workflowsintoclearsystems.APIs,queues,search,andagents🤖shouldstayboringunderpressure.Lessnoise.Moresignalsâš¡teamscanacton.
WhatI do
Automate
AI workflows
Turning scattered research, enrichment, search, and generation loops into reliable agent-facing systems.RAGLangGraphSearch APIsCeleryLLMs
Shape
Product engineering
Clarifying the system, the interface, and the operational contract so teams can ship with less guesswork.PlanningArchitectureObservabilityDX
My career and experiences
Full Stack Software Engineer
SoftStandard Solutions
NOW
Built AI SaaS backend systems for sales automation, AI-native search, and marketing automation products.
Technical Consultant
Humana Apparels
2025
Advised on architecture, infrastructure, and performance improvements for factory workflow systems.
Software Engineer
Humana Apparels
2025
Built ProTrac for production-floor tracking, bottleneck detection, DHU, and real-time action signals.
Software Engineer
Hours Media Ltd
2023
Built and scaled backend services for digital products using Go, Fiber, PostgreSQL, and Redis.
RAG
PostgreSQL
Go
Pinecone
Kubernetes
Pydantic
Vector DB
LLMs
FastAPI
LangGraph
Django
Systems for AI workloads
Tools I reach for when the system has to hold.
Search systems
AI/search
RAG, agents, source-aware retrieval.
LLMsRAGLangChain
Service edges
APIs
Service edges and background workers.
PythonGo
System path
Build path
Search, APIs, data, product.
Search systemsService edgesReliability base
Reliability base
Data core
Storage, queues, deploys, and recovery paths.
PostgreSQLMongoDBRedis
Delivery surface
Product surface
Interfaces where workflows become usable.
Next.jsReact
Working set
Practical stack
A compact slice grouped by layer.
Search systemsService edgesReliability baseDelivery surface
