Available for projects

Hi, I'm Damantha Jasinghe
Programmer

From Sri Lanka

I design smart, scalable, and creative solutions that bring ideas to life. Whether it's building intelligent bots, powerful APIs, or seamless web experiences, my goal is to turn challenges into digital opportunities.

Open to work

🇱🇰 Sri Lanka

DISCOVER MY STORY

About Me

I'm a developer from Sri Lanka, passionate about building scalable bots, APIs, and AI-driven tools. I love turning complex problems into simple, elegant digital solutions.

Full-Stack Development

Building complete solutions from backend APIs to modern frontend UIs.

Telegram Bots & Automation

Creating bots with advanced features that serve thousands of active users.

Web Development

Developing scalable, responsive, and SEO-friendly web applications.

AI & Data-Driven Projects

Leveraging machine learning and analytics to deliver smarter solutions.

Cloud & DevOps

Deploying and managing apps with Cloudflare, GitHub Actions, and containers.

UI/UX & Creative Design

Designing modern, user-friendly interfaces with TailwindCSS and animations.

WHAT I OFFER

Services

Clear pricing, fast delivery, real results. All projects include source code ownership.

Telegram Bot Development

From $100per bot

Custom Telegram bots built for scale — AI responses, media tools, payment systems, admin panels, and full SDBOTS API integration.

Full bot architecture & deployment
API integration
MongoDB database setup
Cloudflare Workers hosting
Admin control panel
30-day post-launch support

Start a bot project

Fast delivery

Web Application

From $300per project

Modern, performant web apps built with Next.js — landing pages, dashboards, SaaS products, and portfolio sites.

Next.js + TypeScript
Responsive & mobile-first
SEO & performance optimized
CMS or API integration
Deployment to Vercel/Cloudflare
Source code handover

Start a web project

Scalable infra

API & Backend

From $200per project

REST or GraphQL APIs, serverless functions, database design, and third-party integrations — built to handle real traffic.

REST / GraphQL API design
Auth (JWT, OAuth2)
MongoDB / PostgreSQL
Rate limiting & caching
API documentation
Load testing included

Start an API project

Cutting edge

AI Integration

From $400per project

Add AI to your product — LLM-powered features, image/text pipelines, intelligent automation, and ML-driven tools.

OpenAI / Gemini integration
Custom prompt engineering
RAG pipeline setup
Image & document processing
Cost optimisation
Usage monitoring

Start an AI project

All prices are starting points. Final cost depends on scope. Contact me for a free estimate.

JOURNEY

Experience

Founder

SD Bots

2022 – Present

Founded and lead SD Bots, a software company specializing in Telegram bot development and the SDBOTS API platform. Oversee architecture, product development, and community growth.

Telegram APINode.jsMongoDBCloudflare

Full-Stack Developer

Freelance

2021 – Present

Building custom web applications, REST APIs, and automation tools for clients. Specializing in Next.js, TypeScript, and serverless deployments.

Next.jsTypeScriptREST APIsVercel

Open-Source Contributor

GitHub

2021 – Present

Maintaining and contributing to open-source Telegram bot libraries and developer utilities. Authored tools used by thousands of developers worldwide.

PythonJavaScriptGitHub ActionsOpen Source

FEATURED WORK

Projects

A selection of things I've built — bots, APIs, and web tools that solve real problems.

10Live

PySDBots

PySDbots is a Python library that serves as a centralized, easy-to-use collection of free APIs. It allows developers to quickly integrate various services into their projects without needing complex authorization or API keys.

Source Live

24Live

TeraboxDL

TeraboxDL is a specialized Python library designed to interact with the TeraBox cloud storage platform. It serves as a programmatic wrapper to simplify file operations that would otherwise be difficult to perform via standard browser interactions.

Source Live

0In Development

AI-Driven Web Tools

Machine-learning powered tools for data analysis and automation. Built with TensorFlow and deployed on serverless infrastructure.

Source Live

0Live

Portfolio Website

This site — built with Next.js 15, Motion, and Tailwind CSS. SEO-optimized with structured data, Open Graph, accessibility, and security headers.

Source Live

View all on GitHub

GitHub Activity

1,041 contributions in the last year

@Damantha126

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KIND WORDS

Testimonials

“Damantha built our entire Telegram bot infrastructure from scratch. The SDBOTS API integration was seamless — our user base grew 3× within two months of launch. Exceptionally reliable work.”

Kavindu Perera

Startup Founder · TechSL