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Sidath R.
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Sidath R.

Senior Software Engineer | AI Agent Developer | AI Automation & APIs

Senior Software Engineer specializing in AI agents, AI automation, and API integrations. I build production-ready AI agents, RAG pipelines, and custom backends in Python and Node.js. I also turn AI-generated ("vibe-coded") MVPs into secure, scalable software that survives real users. 🌟 Top Rated Plus | 100% Job Success | 6,400+ Hours | 7+ Years Experience 🌍 Flexible US / EU / AU Time Zone Coverage | NDA Ready Most AI projects don't fail at the demo. They fail the first week they meet real traffic, real users, and real data. That gap between prototype and production is what I do. WHAT I BUILD ✅ AI agents that actually run in production I build agents with tool calling, memory, retries, cost controls, evaluations, and tracing, so you can see what the agent did, why, and what it cost. I build single-agent and multi-agent orchestration, deployed on AWS Lambda, GCP Cloud Run, or your own infrastructure, authenticated so only authorized systems reach them. Built on OpenAI, Claude, Gemini, Vertex AI, or AWS Bedrock. ✅ Deploying and securing agent harnesses Running OpenClaw or Hermes Agent? They run shell commands and reach your files, messages, and credentials. I self-host them hardened: Docker sandboxing (non-root, read-only root filesystem, dropped capabilities, network limits), credentials in Vault or AWS Secrets Manager instead of plaintext, per-session scoped tool execution, and audit logging. For Claude Cowork and Claude Code, I point them at your own inference on Bedrock, Vertex AI, or Azure AI Foundry with a vetted MCP allowlist and custom Agent Skills. ✅ RAG systems and AI integration into your existing product Document Q&A, knowledge base search, and chat over enterprise data: chunking, embeddings, vector search, reranking, and citations. I also build custom MCP servers so your internal tools and databases connect to Claude, ChatGPT, or your own agents with real auth and audit trails, not raw API keys. ✅ Production hardening AI-generated MVPs Built your application with Cursor, Claude Code, Lovable, Bolt, or Replit? I secure it with authentication, Row Level Security, rate limiting, secrets management, and prompt injection protection. I fix performance and deploy it to handle hundreds or thousands of users on your cloud. ✅ Taking over stalled, inherited, or half-built applications Project stuck? Developer gone? Backend half-finished in Python, Node.js, or Java? I take it over and ship it. Strongest with AWS and GCP, solid with Azure. ✅ Automation that outgrew Zapier, Make, and n8n When no-code platforms hit their limits, I build secure custom backends for complex business logic, third-party database validation, high-volume API processing, guest and user validation flows, and custom PDF generation from HTML templates. Then I wire them back into your n8n, Zapier, or Make workflows so you keep what works. If it has an API, it can be automated. HOW I WORK 1. Short scoping call or chat. 2. Fixed-price milestones with defined deliverables. 3. Clean handover: documented, deployed, fully yours. 🧩 TECH I WORK WITH AI & Agents OpenAI, Claude, Gemini, Vertex AI, AWS Bedrock, LangChain, LangGraph, MCP (Model Context Protocol), RAG, Pinecone, pgvector, multi-agent systems, evaluations and tracing, prompt and context engineering Agent Harnesses & Runtimes OpenClaw, Hermes Agent, Claude Cowork, Kimi Claw, Manus, Claude Code, Cursor, CrewAI, AG2, Dify, Browser Use, Stagehand, Browserbase, Playwright MCP, custom Agent Skills and MCP servers Voice AI & Media Vapi, Retell, Bland, ElevenLabs, Whisper, speech-to-text, text-to-speech, image and video generation Automation n8n, Zapier, Make, Airtable API, Typeform, Jotform, ClickUp API, Notion, Slack Backend Python (FastAPI, Flask, Django), Java (Spring, Spring Boot), Node.js, JavaScript, TypeScript Frontend & Mobile React, Next.js, React Native (Expo), with OTA updates for iOS and Android Cloud & DevOps AWS (Lambda, EC2, S3, CloudFront, CloudWatch, Cognito, SES, Bedrock), GCP (Cloud Run, Vertex AI, BigQuery), Azure App Service, Docker, CI/CD Data Supabase (with Row Level Security), PostgreSQL, MongoDB, Firestore, BigQuery, MySQL Integrations Stripe, Shopify, HubSpot, Dialpad API, SmartLead, Apollo, Clay 📦 RECENT WORK A Zapier-triggered service that runs correlation analysis and generates custom PDF reports from HTML templates. A resume parsing API that extracts work history, skills, and contact details from any CV in one request. A scheduled AWS service that checks for pending work and runs the jobs on a timer. An end-to-end model training pipeline on Vertex AI, automated from data ingestion to deployment. Clients hire me as an AI agent developer, AI automation engineer, AI integration developer, or AI consultant. I work in whatever stack your codebase uses. Preferred: Fixed-price, milestone-based, or retainer engagements. Also open to hourly projects, especially for engagements over 25-30+ hours/week.

🇱🇰Galle, Sri Lanka$30/hr100% JSS4.85 (54)Since Nov 2019
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Earnings and projects

MRR
$548

Last 6 months ÷ 6

World#74,091 / 412k
🇱🇰Country#228 / 1,581
Revenue, last 30 days
$105

Last 6 months: $3.3k

World#91,165 / 412k
🇱🇰Country#352 / 1,581
Total earnings
$102k

Billed in all: $109k

World#38,157 / 412k
🇱🇰Country#114 / 1,581
Per project
$1.4k

$823 in the last 6 months

World#100,535 / 412k
🇱🇰Country#198 / 1,581
Projects, last 6 months
4

Across 6 contracts

50% fixed50% hourly
World#51,816 / 412k
🇱🇰Country#239 / 1,581
Projects in all
74

Across 118 contracts

52% fixed48% hourly
World#40,168 / 412k
🇱🇰Country#266 / 1,581

Earnings, last 30 days

$109k+$105 earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$108.6k$108.7k$108.8kOct 9Oct 24Nov 8

Skill rankings: Top 15% in AWS Lambda

Ranked by MRR among everyone on Upwork with the skill.

  1. #17Vertex AI90 freelancers · 🇱🇰 #1Top 19%
  2. #109AI Text-to-Speech529 freelancers · 🇱🇰 #1Top 21%
  3. #325AWS Development1,478 freelancers · 🇱🇰 #2Top 22%
  4. #442AWS Lambda2,947 freelancers · 🇱🇰 #6Top 15%
  5. #699AI Implementation2,383 freelancers · 🇱🇰 #2Top 29%
  6. #906AI Video Generation3,553 freelancers · 🇱🇰 #4Top 25%
  7. #972LangChain3,821 freelancers · 🇱🇰 #2Top 25%
  8. #1,100FastAPI4,337 freelancers · 🇱🇰 #6Top 25%