Full-Stack Engineer who helps startups and growing businesses ship AI-native products, scalable SaaS platforms, and production-ready web applications - from the first line of code to deployment and long-term support.
With 4+ years of commercial experience and 15+ delivered projects, I've built everything from MVPs validated in weeks to complex multi-tenant platforms used by thousands of users. I work across the full stack and treat AI-assisted development as a core part of how I work, not an afterthought. Claude Code, GitHub Copilot, and Cursor are open in my editor every day - I use them to move faster and catch problems earlier, with strong engineering judgment applied to everything that ships.
๐ช๐ต๐ฎ๐ ๐ ๐๐ผ๐ฟ๐ธ ๐๐ถ๐๐ต
On the frontend I build with React and Next.js, using TypeScript, TanStack Query, Zustand, Redux Toolkit, Tailwind CSS, Shadcn UI, Radix UI, and Framer Motion. I care about responsive design, performance, and interfaces that actually feel good to use.
On the backend I design and build APIs with Node.js, NestJS, and Express - REST and GraphQL, WebSockets for real-time features, JWT and OAuth for auth, and Supabase or Firebase when the project calls for it.
For AI and LLM work I integrate Anthropic Claude, OpenAI GPT-4o, and Gemini into production applications. I build RAG pipelines, AI agents with tool calling, and multi-step LLM workflows using LangChain, LangGraph, and LlamaIndex. For vector search and memory I use Pinecone, pgvector, and Weaviate.
For databases I work with PostgreSQL, Supabase, MongoDB, MySQL, and Redis, using Prisma, TypeORM, or Drizzle ORM depending on the project.
For infrastructure I deploy on AWS (EC2 S3 Lambda RDS CloudFront), Vercel, Railway, and DigitalOcean, with Docker, GitHub Actions, and CI/CD pipelines. Cloudflare and Nginx for edge and proxy configuration.
For integrations I connect Stripe, Twilio, SendGrid, Resend, Google APIs, Mapbox, Clerk, HubSpot, n8n, Zapier, and Vapi into production systems.
๐ช๐ต๐ฎ๐ ๐ ๐ฏ๐๐ถ๐น๐ฑ
AI-native SaaS platforms and MVPs that ship in 4-12 weeks. Full-stack web applications, admin dashboards, and CRM systems. LLM integrations, AI agents, RAG systems, and workflow automation that reduces manual operations by up to 70%. Real-time applications with WebSockets. E-commerce platforms and multi-sided marketplaces. API design and 3rd-party integrations. Cloud infrastructure, DevOps setup, and ongoing maintenance.
I write clean, well-documented code, communicate clearly at every stage, and take ownership of what I build. If you're working on something ambitious and need someone who can move fast without breaking things - we need 100% to talk.
Subhadip S.
Senior Full-Stack & AI Engineer | React, Node, Python, SaaS
Bengaluru, India
$10/hr$10 per hour5.0 (1) 3 jobs $400+ total earnings
๐ ๐๐ ๐ง๐๐๐ฅ๐, ๐'๐ ๐ฆ๐จ๐๐๐๐๐๐ฃ. I'm new to this platform.
I have 9+ years of experience in software development. My goal is to provide my customers with high-quality work and best practices.
I've spent ๐น๐ฎ๐๐ ๐ณ๐ฒ๐ ๐๐ฒ๐ฎ๐ฟ๐ ๐ฏ๐๐ถ๐น๐ฑ๐ถ๐ป๐ด ๐ฝ๐ฟ๐ผ๐ฑ๐๐ฐ๐๐ถ๐ผ๐ป-๐ด๐ฟ๐ฎ๐ฑ๐ฒ ๐๐ผ๐ณ๐๐๐ฎ๐ฟ๐ฒ used by billions of people at some of the biggest companies in the world. when billions of people use the software you've built, you stop thinking like a developer you start thinking like ๐ฎ๐ป ๐ฒ๐ป๐ด๐ถ๐ป๐ฒ๐ฒ๐ฟ ๐๐ต๐ผ ๐ฑ๐ฒ๐น๐ถ๐๐ฒ๐ฟ๐ ๐ฟ๐ฒ๐๐๐น๐๐. I'm ๐ฎ ๐ฆ๐ผ๐ณ๐๐๐ฎ๐ฟ๐ฒ ๐๐ป๐ด๐ถ๐ป๐ฒ๐ฒ๐ฟ ๐๐ถ๐๐ต 9+ ๐๐ฒ๐ฎ๐ฟ๐ ๐ผ๐ณ ๐ฒ๐ ๐ฝ๐ฒ๐ฟ๐ถ๐ฒ๐ป๐ฐ๐ฒ building production-grade applications. I've had the privilege of working with Fortune 500 companies, where I contributed to products actively used by billions of users every single day at massive scale, with ๐๐ฒ๐ฟ๐ผ ๐๐ผ๐น๐ฒ๐ฟ๐ฎ๐ป๐ฐ๐ฒ ๐ณ๐ผ๐ฟ ๐ณ๐ฎ๐ถ๐น๐๐ฟ๐ฒ. In my professional career at a leading MNC, I've worked across the ๐ณ๐๐น๐น ๐๐ผ๐ณ๐๐๐ฎ๐ฟ๐ฒ ๐ฑ๐ฒ๐๐ฒ๐น๐ผ๐ฝ๐บ๐ฒ๐ป๐ ๐น๐ถ๐ณ๐ฒ๐ฐ๐๐ฐ๐น๐ฒ ๐ณ๐ฟ๐ผ๐บ ๐ฎ๐ฟ๐ฐ๐ต๐ถ๐๐ฒ๐ฐ๐๐๐ฟ๐ฒ ๐ฎ๐ป๐ฑ ๐ฑ๐ฒ๐๐ถ๐ด๐ป ๐๐ผ ๐ฑ๐ฒ๐ฝ๐น๐ผ๐๐บ๐ฒ๐ป๐ ๐ฎ๐ป๐ฑ ๐บ๐ผ๐ป๐ถ๐๐ผ๐ฟ๐ถ๐ป๐ด following enterprise-grade standards that most freelancers simply don't have exposure to. You're hiring someone ๐๐ต๐ผ ๐ต๐ฎ๐ ๐๐ต๐ถ๐ฝ๐ฝ๐ฒ๐ฑ ๐ฟ๐ฒ๐ฎ๐น ๐ฝ๐ฟ๐ผ๐ฑ๐๐ฐ๐๐, ๐บ๐ฒ๐ ๐ฟ๐ฒ๐ฎ๐น ๐ฑ๐ฒ๐ฎ๐ฑ๐น๐ถ๐ป๐ฒ๐, ๐ฎ๐ป๐ฑ ๐๐ผ๐น๐๐ฒ๐ฑ ๐ฟ๐ฒ๐ฎ๐น ๐ฏ๐๐๐ถ๐ป๐ฒ๐๐ ๐ฝ๐ฟ๐ผ๐ฏ๐น๐ฒ๐บ๐ at the highest level of the industry. I bring the same professionalism, communication, and code quality to every project big or small.
๐ ๐ช๐๐๐ง ๐ ๐๐จ๐๐๐
โ AI Agents & LLM Systems
Agentic workflows ยท RAG pipelines ยท Vector search
LangChain ยท OpenAI / Anthropic / Gemini
Voice/Video generation ยท Real-time AI pipelines
โ Full-Stack & Mobile
React / Next.js ยท TypeScript ยท Python / FastAPI
React Native ยท Flutter ยท Node.js ยท Java / Spring Boot
โ FinTech & Blockchain
90+ blockchain integrations ยท DeFi ยท Smart contracts
Tax compliance ยท Audit trails ยท Multi-jurisdiction reporting
โ Marketplaces & Booking
Multi-vendor ยท Real-time scheduling ยท Payments
Stripe Connect ยท Two-role systems ยท Admin panels
โ AI-Powered Automation
Document processing ยท Lead qualification
Workflow orchestration ยท Human-in-the-loop approval systems
๐ก ๐ง๐๐๐ ๐ฆ๐ง๐๐๐
AI & Automation: LLM Integration, AI App Development, AI Workflow Automation (n8n), Machine Learning, Business Process Automation, RAG & Chatbots
Data & Analytics: Data Analysis, Power Bi, Data Visualization, Time Series Analysis, Dashboards & Reporting, Pandas, NumPy
Backend Development: Node.js, Express.js, Python, Django, Flask, FastAPI, REST API Development, API Integration, PostgreSQL, MongoDB, Redis
Frontend Development: React.js, Next.js, JavaScript
Full-Stack & Frameworks: MERN Stack (MongoDB, Express, React, Node.js), Full-Stack Development
Cloud & Infrastructure: Amazon Web Services (AWS), Amazon EC2, Amazon S3
Mobile Development: Flutter, Mobile App Development
Databases: MongoDB, PostgreSQL, Redis
No-Code / Low-Code Development: Bubbleio, Go High level(GHL), Rapid SaaS Prototyping, No-Code App Development
ERP & Business Solutions:
Odoo, Odoo ERP Development, Odoo Customization, Odoo Module Development, Odoo Integration, Business Process Automation
Others: SaaS Development, Web Development, Software Development
Let's build something great together.
Beqa B.
Full-Stack Developer - React, Node.js, PostgreSQL, AI Agents
50+ clients. 100% Job Success Score. 10+ years in software engineering.
I work with startup founders who have a clear idea and need one person to build it end-to-end โ architecture, backend, frontend, deployment. No team to manage.
Deepest experience in fintech, but I've shipped products across healthcare, edtech, and SaaS. If it's a web product, I can build it.
Recently built a TradingView-style charting engine with live order-book visualization, and AI agents that extract structured data from documents so a chatbot can answer questions straight from them.
DM me with what you're building.
Aschalew D.
Full Stack Developer | Next.js, Node.js | AI Automation & n8n |
Addis Ababa, Ethiopia
$15/hr$15 per hour5.0 (2) 3 jobs $400+ total earnings
I build production-grade AI automation workflows, scalable SaaS architectures, and enterprise backends for teams that need robust systems instead of fragile, one-off scripts. I bridge the exact gap businesses struggle with: connecting rapid low-code automation pipelines (n8n) with highly optimized, custom full-stack code (Next.js & NestJS).
My flagship framework is an AI-Powered Semantic Extraction & Matching Engine. It ingests multi-file unstructured data payloads, runs precise prompt orchestration via LLMs (Gemini/OpenAI), and structures the data into type-safe relational schemas without token-limit crashes or API latency blocks. This covers the exact core problems modern companies hire for: intelligent data pipeline routing, complex vector search architectures, and seamless full-stack deployment.
Whether you need a scalable SaaS launched from scratch or a manual operational bottleneck fully automated, I own the entire engineering lifecycle end-to-end.
๐ข WHAT I DELIVER
โข AI Automation & Agentic Workflows: Production-grade n8n pipelines, webhook orchestration, LLM prompt engineering, and structured JSON output validation.
โข Scalable SaaS MVPs: End-to-end web applications built with highly responsive frontends and modular database layers ready for immediate market launch.
โข Enterprise Backend Architectures: Clean, heavily structured NestJS/Node.js systems with real-time capabilities (WebSockets), secure authentication, and deep data caching.
โข System Modernization: Refactoring legacy code environments into lightning-fast, SEO-optimized Next.js architectures using modern server-side rendering patterns.
๐ข SELECTED PRODUCTION PROJECTS
1. AI-Powered Semantic Matching Platform
An automated multi-file analysis system that processes unstructured document data, leverages generative AI for deep context analysis, and outputs structured, validated data schemas.
โข Stack: Node.js, Next.js, Gemini API, PostgreSQL, Render
2. TradeWise - Real-Time Financial SaaS Backend
Architected the robust backend core for a high-frequency, real-time data streaming platform handling live market data updates and type-safe transactional flows.
โข Stack: Node.js, Express, WebSockets, Redis (Caching & Queues), PostgreSQL
3. Premium Interactive E-Commerce Ecosystem
A full-stack web application featuring lightning-fast image delivery, complex state synchronization, dynamic animations, and fully integrated custom checkout pipelines.
โข Stack: Next.js (App Router), Zustand, TailwindCSS, Prisma ORM, Vercel
๐ข MY ENGINEERING METHODOLOGY
1. Deep Architectural Logic: I define data schemas, API routes, and workflow flows completely before writing the first line of code.
2. Clean, Scalable Assembly: I write highly maintainable, type-safe code that is fully modular, ensuring any developer joining your team later can extend it seamlessly.
3. Rigorous Integration Testing: I test webhook idempotency, error states, LLM fallback options, and edge cases prior to final production release.
4. Professional Version Control: Continuous integration and deployment pipelines (CI/CD) tracked carefully through GitHub.
๐ข CORE TECH STACK
โข Frontend: Next.js (App Router, Server Components, Server Actions), React.js, TailwindCSS, Zustand, Redux Toolkit, TanStack Query
โข Backend & APIs: Node.js, NestJS (Enterprise Architecture), Express.js, Fastify, RESTful APIs, GraphQL, WebSockets
โข AI & Automation: Custom LLM Integrations (Gemini, OpenAI), n8n Orchestration, Vector Databases (Pinecone, pgvector), LangChain
โข Databases & ORMs: PostgreSQL, MongoDB, Redis (Caching & Queues), Prisma ORM, Drizzle ORM
โข DevOps & Deployment: Docker, AWS, Vercel, Render, GitHub Actions (CI/CD)
๐ข ENGAGEMENT DETAILS
โข Availability: 30โ40 hours/week
โข Timezone: EAT (UTC+3) โ Smooth overlap with European and North American working hours.
โข Engagement Style: Open to milestone-based fixed contracts or dedicated hourly sprints.
Let's establish a bulletproof technical foundation for your application. Send me a message, and we can map out the exact architecture to bring your system to life.
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