Zerova VPN
Fast, private WireGuard VPN client — shipped to Google Play.
Privacy · PublishedAvailable for AI engineering & product work
I build AI products that actually ship.
I'm Zubair Alam, an AI Software Engineer from Bangladesh. I turn ideas into AI-powered mobile & web products — and I take them all the way to the Google Play & App Store. 40+ delivered orders, a 5.0★ record, and an Air Force R&D project on the side.
- AI Engineering
- AI Mobile Apps
- Full-Stack Web
- App Publishing
- Autonomous Systems
Fiverr · Top-Rated
5.0 ★ · 40+ orders
Shipped
12 apps built & signed
0Orders delivered
0Fiverr rating
0GitHub repositories
0Apps built & signed
Featured product
A VPN that went from idea to Google Play.
Zerova / Zystra VPN
A cross-platform Flutter VPN client with a WireGuard core, native tunnel management, multi-region server selection and a complete privacy & rebrand lifecycle — designed, built, signed and shipped to Google Play.
- WireGuard tunnel + native Android VPN service
- Server picker with latency-aware selection
- Session stats, kill-switch & restore-on-restart
- Store listing, data-safety forms and review survival
Shipped work
Apps built, signed and released
Twelve Android & Flutter builds — from privacy tools to offline utilities and AI coaches.
CoreSizer
Offline CCTV storage & server sizing calculators for AFLY Cloud LLC.
Business tool
NetCarve
Zero-permission subnet & CIDR calculator that shows its maths.
Networking
Rise
Adaptive routine coach for IELTS Band 8+ and healthier habits.
AI · Productivity
AniLoom
Offline, ad-free local video player with Continue Watching for TV.
Media · Android TV
AnimeNook
Offline random anime picker — no ads, no tracking, no internet.
Offline utility
AniEye
Watch-order helper that keeps long series in the right sequence.
Offline utility
AniWorthy
Offline trivia and quiz app built for fast, repeat play.
Game
Episovue
Drama cliché bingo — a fun, fully offline party game.
Game
Plotvard
Offline drama watch-order guide with a clean, fast UI.
Offline utility
Toondra
Offline drama night cards for effortless discovery.
Offline utility
Rekordly
Consent-based screen recorder for your own Messenger calls.
UtilityAbout
Engineer, builder, shipper.
I'm an AI Software Engineer who builds end-to-end products — from the AI layer and backend to polished mobile and web front-ends. My work spans AI app development, Android / Kotlin & Flutter, full-stack web platforms and publishing to Google Play & the App Store.
Alongside client work, I contribute to an Air Force research & development project and maintain a large open-source footprint — autonomous systems, radio/SDR tooling, computer vision, machine-learning experiments and more.
On Fiverr I'm a top-rated Level 2 seller with 40+ completed orders and a 5.0 rating — helping founders and developers ship apps, add AI features, and get apps live without the usual publishing headaches.
I completed my BSc in Computer Science & Engineering at the European University of Bangladesh, and I'm working toward a master's abroad to deepen my engineering and AI skills.
- TitleAI Software Engineer
- FiverrTop-rated · Level 2
- FocusAI · Mobile · Web
- EducationBSc in CSE
- LocationBogura / Dhaka, Bangladesh
- LanguagesEnglish · Bangla · Hindi · Urdu
Expertise
What I build, ship and support
End to end — the AI layer, the backend, the app, and the store listing.
AI
AI Engineering
LLM integration (OpenAI · Gemini · Claude), chatbots, RAG, vision, voice, recommendations and on-device ML.
▣
AI Mobile Apps
AI-powered Android and iOS apps — native Kotlin/Swift or Flutter — built for real users, not demos.
◐
Full-Stack Web
React/Next.js front-ends with Node or FastAPI backends, databases, auth, payments and deployment.
▤
Android & Flutter
Production Android apps in Kotlin/Java, plus cross-platform apps for Android and iOS with Flutter/Dart.
▲
App Publishing
Google Play and Apple App Store publishing, organization consoles, DUNS onboarding and store listings.
⌘
Automation & Scripting
Python automation, scraping, data pipelines, trading bots (MQL5/Pine) and Google Sheets dashboards.
⚙
Embedded & R&D
ESP32/microcontroller firmware, SDR & radio tooling, sensors, simulations and applied defense R&D.
◈
Games & Simulation
Real-time Unity prototypes and simulation systems exploring interactive and autonomous behavior.
◉
Autonomous Systems
Computer-vision, path-planning and control experiments for drones, robots and intelligent agents.
How I work
A process built for shipping
Clear scope, visible progress, working software — not endless demos.
-
01
Scope & plan
We pin down the product, the users and the must-work flows. You get a milestone plan with dates and a fixed price.
-
02
Build in the open
Short cycles with builds you can install and test. The AI layer, backend and UI are built together — not bolted on at the end.
-
03
Harden & sign
Release builds, signing keys, permissions, privacy policy, data-safety forms and a store-ready listing.
-
04
Publish & support
Submitted to Google Play / App Store, then monitored through review. Fixes, updates and handover documentation included.
Toolbox
The technologies I reach for
Boring, proven tools — used well — beat hype every time.
AI & Data
Mobile
Web & Cloud
Capabilities
Everything I can design, build and maintain
Across the full stack and beyond.
AI AI & Machine Learning
- LLM integration — OpenAI, Gemini, Claude, open models
- RAG pipelines, vector search & embeddings
- Agents, tool-calling & autonomous workflows
- Fine-tuning, prompt engineering & evaluation
- Computer vision, OCR, detection & tracking
- Speech — STT, TTS & voice assistants
- Classical ML — scikit-learn, TensorFlow, PyTorch
- On-device / edge ML & model optimization
▣ Mobile
- Flutter / Dart — Android & iOS from one codebase
- Native Android — Kotlin & Java
- iOS — Swift & SwiftUI
- Firebase, push notifications & offline sync
- Native plugins, platform channels & FFI
- App Store & Google Play publishing
- Organization console, DUNS & store compliance
- Rejected-app diagnosis & resubmission
◐ Web & Backend
- React, Next.js & TypeScript front-ends
- Node.js, NestJS & Express APIs
- Python — FastAPI & Flask services
- REST, GraphQL & WebSockets
- Postgres, MongoDB, Redis & Firebase
- Auth, payments & multi-tenant systems
- SEO, performance & accessibility
- Responsive, production-grade UI/UX
☁ Cloud & DevOps
- Docker & containerized deployments
- CI/CD pipelines & release automation
- Linux server admin, Nginx & reverse proxies
- AWS, GCP, Oracle Cloud & VPS provisioning
- Git, GitHub Actions & version control workflows
- Monitoring, logging & observability
- Networking, WireGuard VPNs & tunnels
- Secrets management & security hardening
⌘ Automation & Data
- Python automation & web scraping
- Data pipelines, ETL & scheduled jobs
- Trading bots — MQL5 & Pine Script
- Android automation via ADB & accessibility
- Google Sheets & dashboard integrations
- Browser automation & Playwright testing
- API integrations & webhooks
- Data analysis & visualization
⚙ Embedded, R&D & Systems
- ESP32, Arduino & microcontroller firmware
- PlatformIO & embedded C/C++
- SDR & radio signal tooling
- Sensors, telemetry & hardware integration
- Autonomous systems — CV, path planning & control
- Unity prototypes & real-time simulation
- Shell scripting & systems tooling
- Technical writing, docs & research support
Credentials
Certifications
Verified credentials from Google and HackerRank.
▶
Google Play Academy — Store Listing Certificate
Google Play Academy · 2025◆
Software Engineer
HackerRank · 2025◆
Python (Basic)
HackerRank · 2025◆
JavaScript (Basic & Intermediate)
HackerRank · 2025◆
SQL (Intermediate)
HackerRank · 2025◆
REST API (Intermediate)
HackerRank · 2025◆
Problem Solving (Basic & Intermediate)
HackerRank · 2025◆
SEO
bcc.gov.bd · 2015Case studies
Real products, shipped
Across AI, mobile, web and autonomous systems.
Product · Security★ Featured
Zerova / Zystra VPN
A cross-platform Flutter VPN client with WireGuard core, native tunnel management, multi-region server selection and a complete privacy & rebrand lifecycle — built, signed and shipped to Google Play.
Read the case studyAI · Mobile
AI-Powered Mobile Apps
Android & cross-platform apps with integrated LLM features — chatbots, vision, voice and smart recommendations.
Read moreAutomation · Finance
AI Trading Bot
Autonomous MetaTrader system combining MQL5 execution with Python strategy models, live dashboards and risk controls.
Read moreR&D · Autonomous
Air Force R&D
Contributing engineering to a defense research & development project — simulation, signal processing and autonomous systems.
Read moreFull-Stack
Web Platforms
Full-stack products with React/Next.js front-ends, NestJS/Node & TypeScript backends, and live deployment.
Read moreML / Data
ML & Data Experiments
Regression, classification, NLP sentiment analysis, voice age prediction and reinforcement-learning projects.
Read moreAgent · Automation
On-Device AI Agent
An agentic assistant that automates phone and desktop workflows — scheduling, messaging and data tasks via LLM tool-calling.
Read moreJourney
A quick line through my path
-
Present
AI Software Engineer & Fiverr Top-Rated Seller
Shipping AI mobile/web products for clients worldwide — 40+ orders at a 5.0★ rating — while contributing to defense R&D.
-
R&D
Air Force Research & Development
Applied engineering in simulation, signal processing and autonomous systems for a national defense project.
-
Education
BSc in Computer Science & Engineering
European University of Bangladesh — foundations in algorithms, systems, AI and software engineering.
-
Next
Master's Abroad & Deeper AI Research
Working toward an MSc in a technologically advanced country to push the frontier of AI engineering.
Writing
Notes from the build
Engineering, not hype — how these products actually get made.
Engineering
Shipping an AI Mobile App End-to-End: Idea to Google Play
The full pipeline — scoping, the AI layer, Flutter delivery, and getting past store review.
Read post → AIRAG in Production, Without the Hype
What actually matters when retrieval has to work for real users — chunking, evals, guardrails.
Read post → MobileShipping a WireGuard VPN to Google Play
Native tunneling, the VPN service declaration, data-safety forms and store review survival.
Read post → AgentsOn-Device AI Agents with LLM Tool-Calling
Designing reliable agents that automate real phone and desktop workflows — safely.
Read post →Services
Hire me on Fiverr
Fixed packages, clear delivery — from app builds and AI integration to store publishing.
Level 2 · Top-Rated
5.0 ★★★★★
41 five-star reviews, 40+ completed orders and a 1-hour average response time. Certified by Google Play Academy for store listing & publishing — so I don't just build apps, I get them live with a low-rejection record.
- AI mobile apps (iOS & Android, Flutter)
- Custom Android apps — Kotlin & Flutter
- Flutter cross-platform apps
- AI chatbot & feature integration
- Website → app conversion + Play publish
- Google Play publish & App Store publish
- Organization console + DUNS setup
- Rejected-app fix & resubmission
- Websites & full-stack web apps
- AI VPN apps (WireGuard) + admin panel
- Bug fixes & new features
- Automation, scraping & scripts
AI Mobile App Development
Chatbots, vision, voice and GPT/Gemini/Claude integration — iOS & Android from one Flutter codebase, up to a full store launch.
From $95AI Chatbot & Feature Integration
Add an AI chatbot, RAG on your own data, smart search or voice to your existing app — no rebuild required.
From $120Flutter App + Store Publishing
Cross-platform Flutter app for iOS & Android with backend, auth and notifications — optionally published to the stores.
From $95AI VPN App (WireGuard)
Custom VPN app with WireGuard core, AI smart-server selection, admin panel and AdMob monetization — plus Play publish.
From $120Google Play Publishing
Publish or update your app on Google Play from an established console — skipping the new-account 12-tester delay.
From $25Apple App Store Publishing
App record setup, build upload, signing, App Store Connect metadata and review submission.
From $25Organization Console + DUNS
End-to-end organization Play Console setup — DUNS lookup or registration, business verification and publishing.
From $25Rejected-App Fix & Resubmit
Diagnosis and fixes for Play rejection issues — technical, metadata, target API, permissions and policy — then resubmit.
From $25Website + Mobile App
Responsive website plus iOS/Android app from one team — React/Next.js front-end, Node/FastAPI backend, deployed.
From $100AI Chatbot for Websites
Embeddable chat assistant trained on your content — with analytics and guardrails.
From $120Automation & Scripts
Python automation, web scraping, data pipelines and Google Sheets/Excel dashboards.
On requestSomething Bigger?
Multi-stage products, R&D, embedded and cloud work — message me for a custom milestone-based offer.
Custom quoteContact
Let's build something.
Open to AI engineering work, mobile and web projects, research collaborations and opportunities abroad.