Things I built.

NextVector (nextvector.rhasan.online) is an independent technology news and digital intelligence platform built to cut through marketing hype, benchmark saturation, and repetitive news regurgitation. Updated daily with breaking technical developments and executive newsletter briefings ('The Morning Vector'), NextVector evaluates every story through its signature Three Questions Framework (What happened? Why does it matter? What could happen next?). Baked directly into the platform is an expanding, dynamic frontier AI model registry (tracking 135+ models across 24+ global research labs with real-time token pricing and LMSYS Arena rankings) and an empirical benchmark watchdog auditing real capability leaps against dataset contamination.

• Daily Tech & AI News Engine

  Curated technical journalism evaluated through the Three Questions Framework with real-time breaking tickers and audio briefings.

• 'The Morning Vector' Newsletter

  Daily executive newsletter dispatch delivering a high-purity, 3-minute technical scan of critical daily AI and technology developments.

• Integrated Model & Benchmark Radar

  Dynamic, continuously expanding registry of frontier AI models (135+ models across 24+ labs) with live LMSYS Arena Elo rankings and empirical benchmark audits.

Built and self-host an autonomous AI assistant engineered with dynamic tool-calling, headless browser automation, and multi-channel messaging integration. Hermes automates personal workflows, executes terminal tasks, and explores practical applications of agentic AI architectures in IT operations.

• Tool-Calling Engine

  Autonomous execution of terminal commands, filesystem operations, and HTTP APIs.

• Browser Automation

  Headless portal interaction, report downloads, and web data extraction.

• Self-Hosted Linux

  Dedicated Linux host with local state persistence and secure webhook gateways.

Hackathon AssemblyAI Voice Agent Hackathon · September 2026 · Submitted · judging in progress

MediScribe Live is a voice-first assistant for emergency departments, built solo for the AssemblyAI Voice Agent Hackathon on lablab.ai. A full-duplex voice agent does bedside intake and calls tools while it talks. A medical-tuned realtime scribe transcribes the doctor-patient consultation. Then an LLM drafts a SOAP note in which every item cites the transcript turn it came from, and a named clinician must sign before the note is final.

• Bedside Voice Triage

  Full-duplex voice agent with barge-in. Calls tools mid-conversation and updates the chart, ESI score and drug alerts live.

• Ambient Scribe

  Universal-3.5 Pro with the medical-v1 domain. Separates Doctor and Patient and catches drug names and clinical terms.

• Source-Linked SOAP

  Every note item cites transcript turns, checked on the server. Clinician sign-off, then HL7 FHIR R4 export.

Innworld RPG is a free, non-commercial fan game set in pirateaba's web serial The Wandering Inn. You play an unnamed Earther pulled into Innworld by the Great Ritual at the start of Book 1, and the story of the books runs around you day by day. Books 1–6 are encoded as structured data — 898 canon events, 261 characters, 103 places across 38 maps — so canon is the default timeline rather than a scripted rail: do nothing and the books happen as written, step in and you can delay, change or stop events. I build it to learn systems I do not touch at work: a deterministic simulation engine, a data-driven content pipeline, tactical turn-based combat, and a full release pipeline that ships to the browser, Windows and Linux.

• You Level By Living

  Cooking, fighting, trading and talking feed hidden class pools. At night the System may offer a class — decline it and that offer never returns.

• Canon As Data, Not A Rail

  898 events from Books 1–6 as declarative nodes with roles, preconditions and fallbacks, so the player can delay, change or stop them.

• Deterministic Headless Core

  All rules in game/core/ with no nodes or scenes, one GameState, one seeded RNG. Same seed plus same commands replays the same game.

TimeBuddy (timebuddy.orderbuddy.pro) is a multi-tenant SaaS for time tracking, attendance and team productivity, built under Thrive IT Solutions. Companies sign up, invite their team and see who is working, on what, and for how long. A small Windows agent records the active app and idle time. It never logs keystrokes, never uses the webcam, and cleans sensitive window titles before sending anything.

• Multi-Tenant SaaS

  Self-service company sign-up, invite links, and four roles: owner, admin, team manager, employee.

• Windows Desktop Agent

  Reads the active app and idle time through Win32 APIs, with an offline store-and-forward buffer.

• Timesheets & Reports

  Auto-built timesheets, approval queues, punctuality scores, project-hour budgets and CSV export.

OrderBuddy (orderbuddy.pro) is a multi-tenant SaaS built under Thrive IT Solutions that unifies courier dispatch for e-commerce merchants. A merchant sends one order payload, and OrderBuddy formats and sends it to the right courier, such as Pathao or RedX. Slow courier API calls run in a background queue, so the dashboard stays fast. Courier API keys are encrypted at rest.

• Unified Dispatch Engine

  Strategy-pattern courier adapters turn one payload into the right Pathao or RedX API call.

• Background Queue

  BullMQ + Redis worker takes slow courier calls off the request path and retries failures.

• Encrypted Credential Vault

  AES-256-GCM encryption for every merchant's courier API keys and secrets.

LedgerBuddy is a cross-platform finance and inventory app for small businesses, freelancers and shop owners, built under Thrive IT Solutions. It runs on Windows and Android, and is published on both the Microsoft Store and Google Play. It covers sales and PDF invoices, point of sale, stock, purchases, expenses, quotations, and customer and supplier balances. It works fully offline and syncs with the cloud when the internet is back. A separate marketing and account website runs at ledgerbuddy.thriveitbd.com.

• POS & Invoicing

  Cart checkout with barcode scanning, multiple payment types, and branded PDF invoices.

• Offline-First Sync

  Local SQLite first, then bidirectional sync with Supabase when the internet is back.

• Multi-Tenant SaaS

  Trial, startup, full and lifetime plans with five business roles and access control.

Equa is an offline-first personal finance ledger built under Thrive IT Solutions, published on the Microsoft Store with builds for Android and Linux. All data lives on the device by default. Balances are always derived from transaction history using double-entry rules, and money is stored as integer cents. It tracks net worth, monthly cash flow and loans, with full JSON export and import. Optional cloud backup and sync is available as a premium extra. The product website runs at equa.thriveitbd.com.

• Double-Entry Engine

  Balances are derived from transactions, never typed in, so the ledger always adds up.

• Private by Default

  Offline-first storage with no ads or tracking; cloud sync is opt-in.

• Analytics & Loans

  Net worth, monthly cash-flow charts, and loan repayment tracking against principal.

Hackathon AMD Developer Hackathon: ACT II · Certificate of Achievement

An AI-driven accounting document extraction prototype developed for the AMD AI Developer Hackathon (Act II). Implements LLM tool-calling pipelines to parse unstructured PDF receipts, perform schema validation, and automatically generate double-entry ledger entries with discrepancy detection.

• Document Parsing

  Automated ingestion of raw financial receipts and invoices into normalized JSON records.

• Ledger Reconciliation

  Auto-generation of debit/credit rows and chart-of-accounts classification.

• Open Source MVP

  Reproducible Python codebase engineered with clean virtual environments and tests.

A fast, fully static corporate marketing website for OGGRO Technologies Limited, the Bangladesh arm of Techants Solutions (Australia). Built with Next.js 15, React 19, TypeScript, and Tailwind CSS v4, shipped as zero-runtime static HTML on Apache/WHM with automated Playwright testing.

• Static HTML Export

  Pure static build deployed to Apache/WHM without requiring live Node.js servers or databases.

• Automated QA Testing

  Automated Playwright test suites verifying layout integrity, console logs, and WCAG AA contrast.

• Vector Brand Engineering

  Custom SVG vector logo system engineered from legacy raster assets for razor-sharp rendering.