You will get a custom Python or Node.js backend when Zapier, Make, and n8n hit the limit
Top Rated
Project details
Zapier, Make, and n8n are excellent until the moment they are not. Then you are stuck: too much logic for a no-code step, not enough budget for an agency.
That gap is what I build. A real backend service that does the hard part, wired back into the workflow you already have.
WHAT THIS SOLVES
• Business logic too complex for a no-code step
• Validating data against a third-party database before you act on it
• High-volume API calls that blow past your task limits or rate caps
• Guest and user validation flows with real authentication
• Custom PDF generation from your own HTML templates
• Calculations, scoring, and reporting your tools cannot do
• Anything that must run on a schedule and be reliable at 3am
WHAT YOU GET
A deployed, authenticated service on AWS Lambda, GCP Cloud Run, or your own infrastructure, with webhooks into your existing n8n, Zapier, or Make workflows. Error handling, logging, and documentation included. You keep everything that already works.
BUILT WITH
Python (FastAPI, Flask, Django), Node.js, TypeScript, or Java if that is your stack.
Describe the step your automation cannot do and I will tell you what it takes to build.
That gap is what I build. A real backend service that does the hard part, wired back into the workflow you already have.
WHAT THIS SOLVES
• Business logic too complex for a no-code step
• Validating data against a third-party database before you act on it
• High-volume API calls that blow past your task limits or rate caps
• Guest and user validation flows with real authentication
• Custom PDF generation from your own HTML templates
• Calculations, scoring, and reporting your tools cannot do
• Anything that must run on a schedule and be reliable at 3am
WHAT YOU GET
A deployed, authenticated service on AWS Lambda, GCP Cloud Run, or your own infrastructure, with webhooks into your existing n8n, Zapier, or Make workflows. Error handling, logging, and documentation included. You keep everything that already works.
BUILT WITH
Python (FastAPI, Flask, Django), Node.js, TypeScript, or Java if that is your stack.
Describe the step your automation cannot do and I will tell you what it takes to build.
Programming Languages
JavaScript, Python, JavaCoding Expertise
Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$499
|
Standard
$799
|
Advanced
$1,399
|
|---|---|---|---|
| Delivery Time | 6 days | 10 days | 15 days |
Number of Revisions | 1 | 2 | 3 |
Install Script | |||
Test Script | |||
Task Automation |
Optional add-ons
You can add these on the next page.
Extra API endpoint
+$350
Scheduled job or cron service
+$300
Rush delivery (half the time)
+$500Frequently asked questions
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JR
Justin R.
Nov 10, 2025
Deploy real-time ML scoring model in Vertex AI and build scoring pipeline orchestration in GCP
My company worked with Sidath for over 9 months. He displayed the utmost professionalism and on-time delivery. His communication is excellent and commitment to solving the problem is high. He is very responsive when critical needs are flagged.
Based on my direct experience, I would recommend him for:
- Python based data engineering
- Python based ML applications
- Java-based backend engineering
He is a creative problem solver and you can give him open-ended tasks and expect good results. I recommend him without reservation.
Based on my direct experience, I would recommend him for:
- Python based data engineering
- Python based ML applications
- Java-based backend engineering
He is a creative problem solver and you can give him open-ended tasks and expect good results. I recommend him without reservation.
RM
Robert M.
Nov 3, 2025
Fixup bugs in summarize.py
JH
Jason H.
Apr 1, 2025
Pulling Ad Post Comments from Facebook Automation
NH
Noah H.
Feb 22, 2025
Troubleshoot application / zaps
Ranmal is an excellent and talented developer. They're very easy to work with. I highly recommend!
NH
Noah H.
Feb 3, 2025
Build a Barcode/QR/OCR scan plugin for Bubble.io
About Sidath
Senior Software Engineer | AI Agent Developer | AI Automation & APIs
100%
Job Success
Galle, Sri Lanka - 7:24 pm local time
🌟 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.
Steps for completing your project
After purchasing the project, send requirements so Sidath can start the project.
Delivery time starts when Sidath receives requirements from you.
Sidath works on your project following the steps below.
Revisions may occur after the delivery date.
Scoping call or chat
Understand what is failing and agree exactly what the service must do.
Architecture and plan
Decide the approach, the endpoints, and where it runs. Explained in plain English before any code.