Hello! I'm

HojayfaRahman

Work with me
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I buildBackendsAgentsProducts

I build

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Iturnmessy😭workflowsintoclearsystems.APIs,queues,search,andagents🤖shouldstayboringunderpressure.Lessnoise.Moresignals⚡teamscanacton.

WhatI do

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Develop

Backend systems

Designing product-critical APIs, workers, data flows, and operational services that stay boring under pressure.
PythonGoFastAPIPostgreSQLRedis

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

Senior Software Engineer

SubscriptionPro

NOW

Own a multi-channel AI concierge platform for the European luxury-travel market front to back: the agent loop, the retrieval and memory layers, the channel integrations, the operator console, and the AWS infrastructure under all of it.

Full Stack Software Engineer

SoftStandard Solutions

2025

Built an eight-agent sales system on one explicit state machine (company finder, lead finder, email finder, enrichment, verification, scoring, campaign, reply handling), with retry and backoff per stage and a single core exposed over both REST and MCP.

Software Engineer

Humana Apparels Ltd (Ha-Meem Group) — ready-made garments

2024

Built ProTrac, a real-time production-tracking system for one of Bangladesh's largest garment manufacturers, on Django REST and Next.js. Replaced day-late manual reporting with live bottleneck, DHU and plan-versus-actual signals, surfaced while a shift could still be corrected.

Software Engineer

Hours Media Ltd

2023

Built and ran backend services, automation APIs and background workers for client products (reselling, micro-investing, e-commerce) in Python and Next.js on PostgreSQL, working directly with clients to turn requirements into scope.

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.

AI and Agents

AI/search

RAG, agents, source-aware retrieval.

Agentic WorkflowsMCP (Model Context Protocol)RAG
Service edges

APIs

Service edges and background workers.

PythonGo
System path

Build path

Search, APIs, data, product.

AI and AgentsService edgesReliability base
Reliability base

Data core

Storage, queues, deploys, and recovery paths.

SQL / PostgreSQLRedis (Streams)AWS (ECS Fargate, Secrets Manager, KMS)
Reliability base

Product surface

Interfaces where workflows become usable.

SQL / PostgreSQLRedis (Streams)
Working set

Practical stack

A compact slice grouped by layer.

AI and AgentsService edgesReliability baseReliability base