Ajendra Singh
Full Stack Developer | Android Developer | Security Researcher
codeajen@gmail.com | Uttar Pradesh, India | ajendra.info | github.com/ajendras
Summary
Full Stack and Android Developer with 5+ years of freelance experience and 50+ projects, including websites for 30+ clients. Creator of DarkCoder.ai, an AI coding platform with a VS Code extension, Windows desktop app and OpenAI-compatible API. Works mainly with PHP, Laravel, React, Node.js and TypeScript, and tests web applications for security using Burp Suite and the OWASP Top 10.
Skills
Languages: PHP, JavaScript, TypeScript, Python, Java, Kotlin, HTML, CSS, Bash
Frameworks: Laravel, React, Node.js, TanStack Start, Tailwind CSS, Alpine.js
Web & APIs: REST API Development, E-commerce Development, SaaS Development, Webhooks, Payment Integration, PWA, SEO
Mobile & Desktop: Android Development, Flutter, Firebase, Windows Desktop Apps, VS Code Extensions
Databases: MySQL, PostgreSQL, SQLite
Security: Burp Suite, Penetration Testing, VAPT, OWASP Top 10, Bug Bounty, Malware Analysis
Automation: Selenium, Playwright
AI: LLM Integration, AI Coding Agents, API Gateways, MCP, OpenAI API, Ollama
DevOps: Linux, Git, Docker Compose, Nginx, Apache, PM2, Cloudflare, VPS Hosting
Experience
- Delivered websites for 30+ clients across e-commerce, healthcare, gaming and brand sectors, including AnkurMedicose.com
- Built e-commerce stores with online ordering, product catalogs and mobile-first layouts, including RubyChocoBliss.com and TrishnaOrganics.com
- Developed REST API endpoints and automated web workflows with Selenium and Playwright
- Ran VAPT engagements with Burp Suite and wrote a Python scanner that checks web apps against the OWASP Top 10 and produces PDF reports with fixes
- Since 2023, advised 15+ early-stage founders on hosting and MVPs through a community startup program
- Built 6+ Android apps under a personal developer profile, including BTEUP App, Ajen Browser, Madx VPN, Bodhi News App, BTC Harvest App and RootChecker
Projects
AI coding platform and self-hosted gateway: one OpenAI-compatible API over Copilot, Claude, Gemini, Grok, DeepSeek and Ollama.
- Developed a VS Code extension with a coding agent that plans, edits with diff approval and runs tests
- Shipped a Windows desktop app (.exe) with editor, terminal, git and MCP extensions, plus a CLI
- Added user API keys with spending caps and usage tracking, on a DarkCoder subscription or the user's own provider accounts
- Added automatic fallback so coding tools keep working when a model is rate-limited or down
Full-stack web hosting platform with customer panel, staff admin, plans, domains, DNS, SSL, billing and multi-node VPS management.
Tech: Node.js, React 19, TypeScript, TanStack Start, PostgreSQL, Tailwind CSS, PM2, Nginx
Pastebin platform with public, private and encrypted pastes, 170+ syntax languages, user dashboards, a REST API and a Telegram bot.
Tech: Laravel 9, PHP 8, MySQL, Tailwind CSS, Alpine.js
Self-hosted URL shortener SaaS with link analytics, plans and payments, affiliates, webhooks and a full admin panel.
Tech: PHP 8, MySQL, SQLite, JavaScript, GeoIP
Delhi-themed endless-runner browser game with a custom canvas engine and hand-made sprite art.
Tech: React 19, TypeScript, Vite, Canvas, Tailwind CSS
Free image and PDF tools that run entirely in the browser, with no uploads, including exam photo presets and background removal.
Tech: React
Government jobs portal with results, admit cards and syllabus, organised by department, with Hindi support, search and an admin CMS.
Telegram bot for managing a domain registrar account (DNS, nameservers, DNSSEC, renewals), with a domain shop that accepts Telegram Stars and Bitcoin.
Tech: Python 3, python-telegram-bot, httpx, SQLite, Cloudflare API