Md. Latiful Kabir

Software Engineer

system online Open to new opportunities

MD · LATIFUL · KABIR

I build software
that ships.

Full-stack engineer across the JavaScript & Python ecosystems — React, Next.js, Node and FastAPI. I build products that actually ship: auth systems, AI tooling, and a fleet of live apps & public APIs.

Software Engineer Dhaka, BD
0

apps deployed

live on vercel

0

public apis

openapi · no-key

90K +

users reached

affpilot · global

FlowGenX

current post

gen-ai engineer

deploy log
▸ Gochhano Doetra deployed · OK ▸ Vexel deployed · OK ▸ Shuddho deployed · OK ▸ Stamp deployed · OK ▸ Unheic deployed · OK ▸ Tabby deployed · OK ▸ Inkly deployed · OK ▸ Bezel deployed · OK ▸ Memely deployed · OK ▸ Snippy deployed · OK ▸ Hue deployed · OK ▸ Morph deployed · OK ▸ Chirp deployed · OK ▸ Squish deployed · OK ▸ Sticka deployed · OK ▸ Formly deployed · OK ▸ Embiggen deployed · OK ▸ Glean deployed · OK ▸ Gochhano Doetra deployed · OK ▸ Vexel deployed · OK ▸ Shuddho deployed · OK ▸ Stamp deployed · OK ▸ Unheic deployed · OK ▸ Tabby deployed · OK ▸ Inkly deployed · OK ▸ Bezel deployed · OK ▸ Memely deployed · OK ▸ Snippy deployed · OK ▸ Hue deployed · OK ▸ Morph deployed · OK ▸ Chirp deployed · OK ▸ Squish deployed · OK ▸ Sticka deployed · OK ▸ Formly deployed · OK ▸ Embiggen deployed · OK ▸ Glean deployed · OK
01

Terminal

type a command · it's real
visitor@latiful.kabir — shell
try →
visitor@latiful.kabir:~$
02

Operator Profile

dossier
// readme operator.md

I'm a full-stack engineer working across the JavaScript and Python ecosystems — React, Next.js and TypeScript on the front end, Node.js or FastAPI on the back end, whichever the problem calls for. I care most about the parts that are easy to get wrong: authentication (OAuth 2.0 and JWT), data modelling across PostgreSQL, MongoDB and MySQL through ORMs like Prisma and Drizzle, and the messy glue of third-party integrations. I've shipped products used by tens of thousands of people, and lately I've been building AI-powered tools end to end. I started out in C and Java, grew into the web stack, and I'm picking up Rust and Go on the side. Mostly I just like turning fuzzy problems into clean, practical software that ships.

$ readme.md · 124 words plain text
spec sheet id · public
based in
Dhaka, Bangladesh
focus
Full-stack Auth AI tooling
languages
Bangla Native speaker English Intermediate
interests
Open Source Development Cloud Architecture Emerging Technologies
@Saimon8420 open ↗
03

Deployment History

career log
  1. Dec 2025

    ▸ present

    1 yr

    Software Engineer - Gen AI @ FlowGenX AI

    San Francisco, California, United States Remote

    FlowGenX AI is an agentic AI platform designed for enterprise integration and automation. The platform enables businesses to deploy intelligent AI agents that orchestrate complex workflows and integrate with various systems, featuring multi-agent coordination, universal API connectivity, knowledge base management, and enterprise-grade security.

    • Building and developing connectors for third-party integrations including Google Sheets, Google Ads, Meta Ads, PayPal, Dropbox, Google Pub/Sub, Airtable, and more to enable seamless enterprise automation workflows.
    • Maintaining and enhancing the core platform built with Next.js, ensuring stability, performance, and scalability.
    • Identifying and resolving bugs and issues across the platform to improve reliability and user experience.
    • Implementing new features and enhancements to expand platform capabilities and meet evolving business requirements.
    Next.js
  2. Mar 2025

    — Dec 2025

    10 mo

    Full-Stack Developer (Front-End Focused) @ Affpilot AI

    DOHS, Mirpur-12, Dhaka, Bangladesh Onsite

    Affpilot AI is an AI-powered content creation tool designed for bloggers and marketers to automate the generation of SEO-optimized articles, product reviews, and other content. Key features include bulk article generation (up to 1,000 articles in one click), auto-posting capabilities for WordPress and Blogger, and advanced SEO tools for keyword research and grouping. The platform offers specialized generators for various content types, such as Amazon review articles, biography articles, comparison articles, and informational articles. It also provides tools for content optimization like paragraph rewriting, sentence correction, and FAQ generation.

    • Spearheading development of the Affpilot AI platform — an AI-powered content automation system with over 90,000+ global users.
    • Leading front-end initiatives using React.js, TypeScript, and Tailwind CSS, ensuring seamless scalability and performance.
    • Built interactive dashboards for bulk content generation, SEO automation, and one-click publishing to WordPress/Blogger.
    • Integrated RESTful APIs for content generation, keyword analysis, and real-time job tracking.
    • Collaborated cross-functionally for the AppSumo global launch, enhancing onboarding flow and multilingual UI/UX.
    • Improved code modularity and component reusability, reducing front-end code redundancy by 25%.
    TypeScriptReact.jsTailwind CSSREST
  3. Jun 2024

    — Feb 2025

    9 mo

    Software Developer @ AdsPillar (PlanPost AI)

    Begum Rokeya Sarani, Mirpur, Dhaka, Bangladesh Onsite

    PlanPost AI is an AI marketing assistant that helps users create content, ads, and manage SEO. It offers features such as generating 30 days of social media posts, ad copy, graphics, and videos in seconds. Key functionalities include a bulk social media post generator, a free online graphic design tool, an AI ad creative generator, and an AI agent chatbot for customer engagement. The platform aims to save time, reduce costs, and help businesses grow faster by streamlining content creation and ad campaign management.

    • Contributed to PlanPost AI, an AI-driven social media content creation and scheduling platform.
    • Developed backend APIs with Python (FastAPI) and crafted responsive UIs using React.js.
    • Designed and launched Canvas, a manual graphics design tool inspired by Figma/Canva.
    • Integrated AI-assisted media rendering workflows and implemented scalable client-server communication models.
    • Enhanced backend performance, reducing API latency by 40%.
    React.jsPythonFastAPIFigma
  4. Feb 2024

    — May 2024

    4 mo

    Software Developer Intern @ AdsPillar

    Begum Rokeya Sarani, Mirpur, Dhaka, Bangladesh Onsite

    Supported full-stack development of internal projects using React.js, Node.js, and Python. Participated in Agile sprints, performed debugging, and contributed to QA testing pipelines. Assisted in integrating third-party APIs and improving code efficiency through refactoring.

    • Supported full-stack development of internal projects using React.js, Node.js, and Python.
    • Participated in Agile sprints, performed debugging, and contributed to QA testing pipelines.
    • Assisted in integrating third-party APIs and improving code efficiency through refactoring.
    React.jsPythonNode.jsAgile
04

Flagship Systems

selected builds
flagship · operational

Doetra — AI SEO Article Generator

Full-stack AI SaaS, built end-to-end as a solo developer, that generates SEO-optimized product review and informational articles with auto-generated images and one-click WordPress publishing. Live app at app.doetra.com with a Next.js marketing site at doetra.com.

Suite of 24 free

Suite of 24 free in-browser tools on doetra.com (image upscaler, OCR with Bangla, auto subtitles, PDF editor, background remover, job-form photo resizer and more), each at a search-keyword path with its own pre-rendered pages, structured data and sitemap, routed through a Cloudflare Worker with edge caching in front of Vercel.

Five article generation flows

product Roundup reviews, Info (educational) articles, Outline-to-Article, plus bulk Roundup and bulk Info batch jobs with queue-based async processing and live status tracking.

AI text and image

AI text and image generation through swappable model providers, so models can be upgraded without code changes: featured images and up to 3 inline section images per article.

Live Amazon Creators API

Live Amazon Creators API integration across 31 search indexes with in-stock filtering and per-site Amazon affiliate tag management.

  • Full WordPress integration supporting publish, schedule, and draft statuses, categories, featured images, and inline image uploads via the /wp-json/wp/v2 REST API. WordPress credentials encrypted at rest with AES-256-GCM.
  • Dual authentication: Google OAuth (@react-oauth/google on frontend, google-auth-library on backend) plus email/password with verification codes and password reset; JWT access tokens (15m) + refresh tokens (7d) in httpOnly cookies.
  • Abuse protection: Fingerprint.js device fingerprinting on signup, Redis-backed per-endpoint rate limiting (login, register, generate, bulk), Helmet security headers, and a CORS allow-list.
  • Frontend: React 19 + TypeScript + Vite + Redux Toolkit + Tailwind + Radix UI + Tiptap 3.20 rich-text editor with an AI-powered internal linking service between articles.
  • Admin panel covering user management, article moderation, API usage audit, bulk job monitoring, plan and credit-pack CRUD, an internal blog CMS, and an email campaign builder with reusable templates, variable substitution, and per-plan user targeting.
  • Billing via Stripe: subscription plans and one-time credit packs with signed webhooks, and configurable per-article-type credit costs (roundup, info, outline, per extra image) editable live from the admin dashboard.
  • Transactional email via Nodemailer + Hostinger SMTP for signup verification, password reset, and Stripe-webhook-triggered order confirmations.
  • Backend: Node.js + Express + MongoDB/Mongoose + Redis caching (24-hour TTL on Amazon search results), running in PM2 cluster mode (2 instances, 1 GB max memory) with Vercel-compatible serverless detection.
Launch

A free, privacy-first video editor that runs entirely in the browser — no upload, no watermark, no signup. 29 tools (trim, compress to any size, resize for Reels/TikTok, text, music, blur, GIF, split and more) stack into one edit list and export in a single pass. Live at doetra.com/online-video-editor, part of the Doetra suite of free tools.

  • Edit stack: every tool is a layer on one timeline (trim, cuts, speed, crop, resize, text, logo, music, blur, picture-in-picture, side-by-side, progress bar) rendered once, so there is no quality loss between steps.
  • Video engine on Mediabunny + WebCodecs in a Web Worker: hardware encoding, a stream-copy fast path when nothing needs re-encoding, fit-to-size bitrate targeting, and 720p preview proxies for 4K files.
  • GPU colour grading: one WebGL2 shader shared by the live preview and the export (exposure, white balance, colour wheels, curves, per-colour HSL, .cube LUTs, scopes), matched pixel-for-pixel to a reference implementation.
  • SEO-first Next.js 16 site: a page per tool, 6 category hubs, structured data, Open Graph images and an animated landing page; mobile-first down to 320 px.
  • In development (Pro): AI editor chat, English/Bangla captions, auto highlights for Shorts, smart shortening and clean-sound processing.
live

A live sky-visualization web app that consumes my own Horizon (Sun & Moon) and Orrery (planetary) APIs to show exactly what's above you at this moment — read back in plain language, with a full English ⇄ Bengali interface.

  • Sky Compass: a top-down radar that tracks the Sun by day and the phase-accurate Moon by night — and the next body to rise when both are down — plotting real altitude/azimuth and refreshing live.
  • Plain-language hero lede generated in code from live data (e.g. "The Sun hangs 72° over the east-southeast, setting in 7h 49m…").
  • Two honest views with a toggle: a geocentric "from Earth" sky dial and a heliocentric "from above" orrery, at real ecliptic longitudes.
  • Full internationalization (English ⇄ বাংলা) via a hand-rolled, type-safe i18n layer — Bengali numerals and per-language sentence generation, not word-for-word swaps.
  • Detail cards (Sun, the full twilight set, Moon), upcoming moon phases, and a responsive monthly almanac (desktop grid + a mobile daylight-ribbon agenda).
  • Built with Vite + React 19 + TypeScript (strict) + Tailwind, backed by 100+ Vitest tests; consumes real-data REST APIs I built and deployed.
live

A calm live wallpaper for Windows written in Rust: today's prayer times from my Miqaat API, the next prayer, and one authentic reminder at a time with its source, drawn behind the desktop icons on a photo of a great mosque. One 14 MB self-installing exe, about 30 MB of memory.

  • Native Rust + Win32: Direct2D/DirectWrite drawn in software (no GPU driver in the process), a layered child of Explorer's WorkerW so it works on Windows 11 24H2.
  • Offline library of 45 Quran verses, 34 graded hadith and 76 Hisn al-Muslim adhkar, pulled from published datasets by a build script and chosen by the time of day; authentic special days with references.
  • Light follows the prayers, 20 Wikimedia photos, 4 layouts, 27 fonts, English/বাংলা/العربية, optional CPU/GPU/RAM/disk/network strip, pauses during full-screen games.
  • Per-user self-installer with Start menu entry, autostart and Apps uninstall; interactive demo page on GitHub Pages.
github

A web application for reading the Quran, with features like advanced search, multiple translations, audio recitations, and customizable themes.

  • Comprehensive Browsing: Navigate the Quran by Surah, Juz, Hizb, Manzil, Ruku, Sajda, and Page.
  • Advanced Search: Quickly find verses with a powerful and intuitive search functionality.
  • Multiple Translations: Compare and understand verses with multiple translations side-by-side.
  • Audio Recitations: Listen to beautiful recitations of each verse.
  • Customizable Themes: Switch between light and dark modes for a comfortable reading experience.
  • Responsive Design: Enjoy a seamless experience on any device, from desktops to mobile phones.
  • Elegant UI: A clean and modern user interface built with Shadcn/ui and Tailwind CSS.
  • State Management: Efficient and predictable state management with Redux Toolkit.
github

A modern, fully responsive web application for exploring authentic Islamic Hadiths in Arabic, English, and Urdu.

  • Access 9 major Hadith collections including Sahih Bukhari, Sahih Muslim, Jami' Al-Tirmidhi, Sunan Abu Dawood, Sunan Ibn-e-Majah, Sunan An-Nasa'i, Mishkat Al-Masabih, Musnad Ahmad, and Al-Silsila Sahiha.
  • Search Hadiths by text in English, Arabic, or Urdu with real-time results and pagination.
  • Filter by book collection and authenticity status (Sahih, Hasan, Da'eef).
  • Browse chapters within each book with multilingual chapter titles.
  • View complete Hadith texts and narrator chains in all supported languages with RTL support for Arabic and Urdu.
  • Fully Responsive Design: Optimized for mobile, tablet, and desktop with touch-friendly navigation.
  • Light & Dark Mode: Seamless theme switching with system preference detection and persistent user choice.
  • Clean & Elegant UI: Built with shadcn/ui, Tailwind CSS, and smooth transitions for an enhanced user experience.
github

A comprehensive web application providing accurate Islamic prayer times, fasting schedules, Qibla direction, and Hijri calendar conversion for Muslims worldwide.

  • Accurate prayer time calculations for Fajr, Sunrise, Dhuhr, Asr, Maghrib, and Isha with real-time countdown and progress indicators, supporting 12 different calculation methods and Shafi/Hanafi madhab options.
  • Fasting schedule with Sahur and Iftar times, countdown timers, fasting duration calculation, and Ramadan awareness features.
  • Qibla direction finder with precise calculation based on user location, interactive compass, and distance to Makkah.
  • Hijri calendar with Gregorian to Hijri date conversion, Arabic/English display, and White Days (Ayyam Al-Beed) tracker.
  • Privacy-focused design with all calculations performed locally on the device — no data sent to external servers.
  • Built with React 18, TypeScript, Vite, Tailwind CSS, Zustand, and Radix UI with Dark/Light/System theme support.
github

A fast, free, browser-based graphic-design studio (a mini-Canva) built with React 18 and Fabric.js — no login, no download. Make social posts, thumbnails, slides, flyers and logos, then export up to 5K. Live at canvo-dev.vercel.app.

  • 115+ curated shapes across Custom (speech bubbles, badges, banners, arrows, organic blobs), Plain and Rounded panels, plus 300+ searchable Lucide icons and 49 Google Fonts.
  • Insert any image and clip it into a shape or into editable text; background/overlay images with a 5 MB limit and live thumbnail previews; high-resolution PNG export up to 5K.
  • Full editor: 15 artboard presets, smart 8px snapping guides, 50-state undo/redo, layers, grouping, alignment, and stroke / fill / shadow / opacity controls on a Fabric.js canvas.
  • Animated marketing landing page (React Router) with a light/dark theme toggle; premium coral→amber dark UI set in Bricolage Grotesque, Figtree and JetBrains Mono.
  • Mobile-first and fully responsive — the editor goes canvas-first on phones with dismissible overlay panels and a scrollable bottom action bar; zoom clamped to 50–200%.
live

Browser-based design tool for creating customizable Islamic greeting cards, inspired by Figma and Canva.

  • 80+ pre-built templates for Eid ul-Fitr, Eid ul-Adha, Ramadan, Milad-un-Nabi, and other Islamic occasions, organized by style (Minimal, Floral, Geometric, Calligraphy).
  • Fabric.js-powered canvas editor with 15 aspect ratio presets, smart snapping guides, 10%–500% zoom, and 50-state undo/redo.
  • 60+ geometric shapes, 300+ Lucide icons with real-time search, and a 20+ category asset library (mosques, lanterns, patterns, calligraphy).
  • Rich text editing with 49 Google Fonts via WebFontLoader; image filters including sepia, blur, grayscale, and duotone.
  • High-resolution export from HD (1280×720) up to 5K (5120×2880) in PNG, JPEG, and WebP.
  • Built with React 18 + Context API + Tailwind CSS + shadcn/ui, optimized with lazy-loaded panels, virtualized asset grids, and code-split bundles.
github
05

Backend APIs

10 services · online

10 free, public, no-key REST APIs — documented with OpenAPI, deployed on Vercel.

Free public astronomy API — planetary positions, rise/set & transit times, twilight, Moon phases, solar & lunar eclipse prediction (global + local visibility), equinoxes & solstices, plus conjunctions & greatest elongations. Pure-computation engine, no data feeds.

ExpressTypeScriptOpenAPIastronomy-engine

Free public thermal-comfort & heat-safety API — Heat Index, Wind Chill, Humidex, Dew Point, Wet-Bulb, Apparent Temperature, WBGT and UTCI with safety categories & plain-English guidance for any weather reading, in metric or imperial. Pure-computation engine, no API key.

ExpressTypeScriptOpenAPIUTCI

Free public magnetic-declination & geomagnetic-field API — World Magnetic Model declination, inclination, field intensity & components, secular drift, grid variation, and true↔magnetic bearing conversions for any location & date. Pure-computation engine, no API key.

ExpressTypeScriptOpenAPIgeomagnetism

Free public geospatial-geometry API — measure area/length/centroid, geodesic distance & bearing, buffers, polygon overlay (union/intersect/difference), spatial predicates, convex & concave hulls, simplification, and TIN/Voronoi/isoline/IDW interpolation. Send GeoJSON, get GeoJSON back; powered by Turf.js, no API key.

ExpressTypeScriptOpenAPITurf.js

Free public carbon-footprint & emissions API — CO₂e for driving, flights & public transport, electricity by national grid, household fuels, diet & food, and freight shipping, plus real-world equivalencies. Bundled published emission factors (DEFRA, IEA, Poore & Nemecek); every response carries a not-a-certified-audit disclaimer.

ExpressTypeScriptOpenAPIzod

Free public clinical-calculators & medical-scores API — BMI/BSA, kidney function (eGFR, creatinine clearance), ASCVD cardiac risk, electrolyte & acid-base labs, GCS & APGAR scores, obstetric dating, and weight/BSA drug dosing. Validated published formulas; every response carries a not-medical-advice disclaimer.

ExpressTypeScriptOpenAPIzod

Free public astrology API — natal birth charts, planetary positions, houses, aspects, transits, synastry, composite & solar-return charts, all with built-in interpretations. Pure-computation engine, no data feeds.

ExpressTypeScriptOpenAPIastronomy-engine

Free public Human Design API — full BodyGraph (Type, Authority, Profile, Centers, Channels, the 64 Gates, Definition & Incarnation Cross) from birth data, plus two-person connection charts, live transits and interpretations.

ExpressTypeScriptOpenAPIastronomy-engine

Free public Sun & Moon REST API — sunrise/sunset, the full twilight set, golden & blue hour, solar position, day length, plus moonrise/set, illumination, phase and upcoming phase forecasts.

ExpressTypeScriptOpenAPISunCalc

Free public Islamic prayer-times & fasting API — prayer & fasting schedule, Hijri calendar, Qibla direction, makruh windows and Islamic event countdowns.

ExpressTypeScriptOpenAPIadhan
06

The Fleet

51 apps · auto-synced

51 apps deployed on Vercel — this grid rebuilds itself from my account, so new launches appear on their own.

Screenshot of Gochhano Doetralive
Gochhano DoetraUtilities
Screenshot of Vexellive
Vexel

Image to SVG — trace PNG/JPG logos, sketches and art into clean vector paths in your browser.

Utilities
Screenshot of Shuddholive
Shuddho

Bijoy ↔ Unicode for text and whole Word, Excel and PowerPoint files (English kept), and any Bangla PDF — broken, Bijoy or scanned — to a correct Word file.

Utilities
Screenshot of Stamplive
Stamp

Photo watermarker — text or logo watermarks, placed or tiled, on up to 50 photos at once with zip download.

Utilities
Screenshot of Unheiclive
Unheic

HEIC converter — turn iPhone photos into JPG, PNG or WebP in your browser, many at once.

Utilities
Screenshot of Tabbylive
Tabby

Favicon generator — from an image, text or emoji to a full pack: multi-size ICO, PNGs, app icons and the HTML snippet.

Design & makers
Screenshot of Inklylive
Inkly

Handwriting → font — draw your letters or snap a photo of paper, and download a real, installable .ttf.

Design & makers
Screenshot of Bezellive
Bezel

Device mockups — drop a screenshot into iPhone, MacBook, Android or browser frames and export a clean mockup.

Design & makers
Screenshot of Memelylive
Memely

Meme maker — classic captions, GIF memes, multi-panel layouts and deep-fry effects; full-res export, no watermark.

Design & makers
07

Live Ops

real-time · client-side
systems status pinging 10 services…
  • Miqaat Prayer times & fasting ····
  • Horizon Sun & Moon ····
  • Orrery Ephemeris / astronomy ····
  • Astraea Astrology / natal charts ····
  • Rave Human Design ····
  • Vitals Clinical calculators ····
  • Verdant Carbon footprint ····
  • Tessera Geospatial geometry ····
  • Declino Geomagnetic field ····
  • Swelter Thermal comfort ····
interactive · run it live no key required
GET —
idle
// pick an endpoint and hit Run — the live JSON shows up here.
where & when · your location · qibla also live · miqaat api
live · prayer times Miqaat API

location

locating…

hijri

—

qibla

—

next prayer

— --:--:--

—

Fajr

··:··

Sunrise

··:··

Dhuhr

··:··

Asr

··:··

Maghrib

··:··

Isha

··:··

Sehri ends

··:··

Iftar

··:··

Fetching your local schedule…

mission map

qibla — · — km to Makkah

Dhaka · home Makkah
home Makkah you
08

Source Activity

@Saimon8420
contribution signal @Saimon8420 ↗
09

Systems / Stack

56 technologies

Expert

9 technologies

  • JavaScript
  • TypeScript
  • React.js
  • Next.js
  • HTML5
  • CSS3
  • Tailwind CSS
  • Git
  • GitHub

Advanced

18 technologies

  • Python
  • Shadcn UI
  • Magic UI
  • Astro
  • Redux Toolkit
  • React Query
  • Zustand
  • Context API
  • Node.js
  • Express.js
  • FastAPI
  • PostgreSQL
  • MongoDB
  • Prisma
  • JWT
  • OAuth 2.0
  • Vercel
  • Postman

Proficient

22 technologies

  • Angular
  • Vue.js
  • Material UI
  • Chakra UI
  • DaisyUI
  • MySQL
  • Supabase
  • Drizzle ORM
  • Mongoose
  • ClerkAuth
  • Docker
  • GitHub Actions
  • Railway
  • Render
  • Firebase
  • Jest
  • React Testing Library
  • Figma
  • Notion
  • VS Code
  • Trello
  • Slack

Familiar

7 technologies

  • Java
  • C
  • Rust
  • Go
  • Bun.js
  • Elysia.js
  • Passport.js
10

Credentials

education