I am a Lead Software Engineer in QA with 7+ years of experience designing enterprise-grade automation and performance testing solutions across Finance, Cloud, Telecom, and Big Data systems.
I specialize in building scalable automation frameworks, performance engineering strategies, and data validation systems for complex microservices and ETL pipelines.
๐น Performance Testing โ JMeter, Locust, Load Modeling, Microservices Load Strategy
๐น Automation Framework Development โ Python, Playwright, Selenium
๐น API & Backend Validation โ REST/SOAP, Postman, SQL
๐น Big Data & ETL Testing โ PySpark, Snowflake, Oracle, Data Validation Frameworks
๐น CI/CD Integration โ Jenkins, Bamboo, Airflow
I have led QA teams for mission-critical financial systems and enterprise scheduling engines, delivering robust, maintainable, and high-performance testing architectures.
If you need:
A scalable automation framework
Performance bottleneck identification
ETL/data pipeline validation
CI/CD testing optimization
Letโs build a reliable, production-grade QA solution.
Automation
Selenium
ETL
SQL
Performance Testing
Apache JMeter
Load Testing
API Testing
PySpark
Test Automation Framework
CI/CD
Jenkins
Apache Airflow
Snowflake
REST API
Hana H.
Colombo, Sri Lanka
$15/hr
5.0
2 jobs
I help businesses eliminate repetitive manual tasks and scale operations through custom software automation. By bridging the gap between business information systems and robust software engineering, I build reliable scripts and integrations that save hours of manual labor.
What I do:
Task Automation: Custom Python scripts, web scraping, and data processing.
API Integrations: Connecting CRMs, databases, and third-party tools.
Workflow Optimization: Building automated data pipelines and bots.
Teaching English
Mathematics Tutoring
Software Development
Task Automation
Build Automation
Google Sheets Automation
Electronic Design Automation Software
Prompt Engineering
Sachintha D.
Anuradhapura, Sri Lanka
$15/hr
5.0
2 jobs
I've been working on factory floors and control panels for over 5 years commissioning systems, fixing programs that shouldn't have broken, and building automation solutions that actually hold up in production.
My core work is PLC programming and SCADA/HMI development. I've delivered projects across Siemens TIA Portal, Schneider EcoStruxure, Mitsubishi GX Works, Omron Sysmac, Allen-Bradley Studio 5000, and a range of other platforms including Xinje, Wecon, CODESYS-based systems, and AutomationDirect. On the SCADA side I've worked with AVEVA Plant SCADA, WinCC, Viejo Citect, and Node-RED based IIoT dashboards.
Beyond the programming side, I handle VFD and servo drive commissioning, industrial communication setup (Modbus, ProfNet, Ethernet/IP, MQTT), and full project documentation. Most of my projects run from design through to site commissioning so I understand what it takes to get a system working in the real world, not just on paper.
Across 5+ years I've commissioned systems in food processing, manufacturing, and utilities โ if you have a system that needs building, fixing, or upgrading, send me the details and I'll tell you straight whether I can help.
Automation
Control Engineering
Industrial Automation
Instrumentation
PLC
PLC Programming
SCADA
Industry 4.0
System Automation
Ladder Logic
SolidWorks
Python
Electrical Design
Lahiru B.
Matale, Sri Lanka
$15/hr
4.9
20 jobs
Did you know businesses lose 30โ40% of productive hours to tasks that AI Agents can handle automatically 24/7, without error, without overtime?
I build production-grade AI Agent systems that eliminate manual work, automate complex workflows, and integrate directly into your existing tools and operations. From LangGraph multi-agent pipelines to n8n automation and real-time voice agents โ everything I deliver goes into production, not just a demo.
100% Job Success Score ยท Top Rated on Upwork ยท 10+ production deployments across real estate,
healthcare, SaaS, and service businesses.
โ What You'll Gain by Working With Me:
๐ฐ Cut Operational Costs
Replace expensive manual workflows with AI agents that scale. My systems reduce support overhead, automate lead handling, and eliminate data entry โ while improving speed and accuracy across your operations.
โฑ Save Your Team Hundreds of Hours
Free your team from repetitive tasks. My agents handle customer queries, document search, lead qualification, appointment booking, and CRM updates โ instantly and accurately, around the clock.
๐ Scale Without Hiring
AI agents operate 24/7 without fatigue. Scale your support, sales, and operations withoutincreasing
headcount or overhead.
๐ฏ Smarter Customer Experiences
Deploy always-available AI agents that give your customers real-time answers, handle inquiries, and guide them through your process โ with zero wait time.
๐ Deep Integrations, Not Just Chatbots
I connect your AI agents directly to your CRM, APIs, databases, and internal tools โ so everything runs seamlessly in the background without manual handoffs.
๐ง What I Build:
AI Agent Systems (LangGraph) Multi-step agentic workflows with tool routing, memory, and real API integrations โ far beyond simple chatbots
RAG Knowledge Agents
Agents trained on your documents, FAQs, and databases that retrieve accurate answers instantly
Workflow Automation (n8n ยท Make)
End-to-end pipelines connecting your tools, CRM, webhooks, and APIs with zero manual intervention
Voice AI Agents (Retell AI ยท Vapi ยท Twilio)
AI phone agents that answer calls, qualify leads, book appointments, and trigger follow-up actions automatically
WhatsApp & Messaging Agents
AI agents connected to WhatsApp Business API, Telegram, and Slack โ handling inquiries, orders, and support
CRM Automation (GoHighLevel ยท HubSpot)
Smart lead routing, pipeline management, follow-up sequences, and contact syncing running automatically
๐ Tech Stack:
Agents & AI: LangGraph ยท LangChain ยท OpenAI API ยท RAG pipelines ยท Prompt Engineering
Automation: n8n ยท Make ยท Zapier ยท Webhooks
Voice: Retell AI ยท Vapi ยท Twilio ยท LiveKit ยท ElevenLabs ยท WebRTC
Messaging: WhatsApp Business API ยท Telegram ยท Slack
Backend: Python ยท FastAPI ยท Supabase ยท PostgreSQL
CRM: GoHighLevel ยท HubSpot ยท Salesforce
๐ Results From Real Deployments:
โ LangGraph AI Agent: Automated 7-intent WhatsApp ordering system for a restaurant client zero
manual order handling
โ Voice AI Pipeline: Built self-hosted voice agent at $0.02/min vs $0.08โ$0.10/min with third-party providers โ 75% cost reduction for the client
โ RAG Knowledge Agent: Deployed on cloud platform reduced internal query resolution
time by 60%
โ Outbound Voice Agent: Built AI staffing pipeline that autonomously contacts candidates qualifies them, and updates CRM โ replacing 40+ hours/week of manual outreach
โ Computer Vision Pipeline: Real-time YOLO-based detection system deployed on edge hardware for industrial monitoring
๐ผ Who I Work Best With:
Startups building AI-first products or MVPs
SaaS companies adding LLM features to existing platforms
Service businesses automating sales and support ops
Agencies needing white-label AI agent builds
Founders who want production systems, not prototypes
๐ฆ What You Get:
Custom AI Agent built specifically for your use case
Clean, documented, production-ready code
Full integration with your tools, APIs, and workflows
Testing with your real data before handoff
Deployment-ready โ hosted or self-hosted
Optional ongoing support and optimisation
๐ Let's Build Your AI Agent System
Whether you need a LangGraph agentic workflow, an n8n
automation pipeline, a RAG knowledge base, or a voice
AI agent โ I'll design and deploy a system that
delivers real, measurable business impact.
๐ฉ Send me a message or click "Invite to Job" let's talk about what we can automate for you.
AI voice agent development, AI voice agents, custom AI voice agents, AI phone agents, conversational AI, voice AI development, AI call automation, AI IVR systems, Twilio voice, Twilio IVR, Twilio automation, Retell AI, Retell AI development, Vapi AI, Vapi voice agents, LiveKit voice AI, WebRTC voice agents, real-time voice AI, AI receptionist systems,
Claude Code, Claude Code automation, Claude Code AI agents, Claude Code workflows, Claude Code prompt engineering, Claude Code integrations, Claude Code API integration whatsapp bot
Machine Learning
Deep Learning
NLP Tokenization
Computer Vision
Chatbot
LLM Prompt
MLOps
Python
OpenCV
TensorFlow
C++
Natural Language Processing
Data Analysis
Microsoft Excel
Artificial Intelligence
Vidusha S.
Meegoda, Sri Lanka
$10/hr
5.0
3 jobs
Welcome to my profile! Iโm Vidusha Sanidu, an expert in Full Stack Solutions Designing, AI Integration, Scalable AWS solutions and complex logics. I am a Computer Science graduate(Bsc Hons) with hands-on experience building scalable, secure, and production-ready applications for more than 4 years.
๐น Why Work With Me?
โ 4+ years of experience in full-stack development
โ Experience with AI integration & Pipeline setup
โ Delivered optimized & production-ready projects with Next.js, NestJS, and Docker
โ Skilled in CI/CD automation for faster, error-free deployments
โ Clear communication and strong attention to details and requirements
โ Passion for solving problems with clean, scalable code
I specialize in modern TypeScript/ Python frameworks like Next.js, React.js, NestJS, FastAPI and Express.js, backed by solid expertise in databases (PostgreSQL, MongoDB, MySQL, Redis) and DevOps tools (AWS, Docker, GitHub Actions, CI/CD pipelines).
And also I have a solid background in AI Integration and Automation using technology like RAG/ Agent systems using Langchain, VectorDBs and LLMs.
Whether you need a robust Full stack application, an AI solution or a full-stack application deployed with Docker, I bring the technical skills and problem-solving mindset to deliver high-quality solutions, on time, every time.
โจ Letโs collaborate to bring your ideas to life from concept to deployment. Iโm excited to help you build innovative, reliable, and scalable digital solutions.
Code | Compile | Conqueror
Next.js
NestJS
Node.js
CI/CD
Python
Java
Back-End Development
Amazon S3
Web Application
Front-End Development
Machine Learning
Automated Workflow
API Integration
Faisal A.
Malwala, Sri Lanka
$50/hr
5.0
1 jobs
I help businesses build secure, scalable infrastructure and automate the work that slows them down.
With a background in network engineering and cloud security, I design and deploy infrastructure that is reliable, hardened, and built to last. On the automation side, I build AI-powered workflows that cut manual work, reduce errors, and free teams to focus on what actually matters.
Core Services:
-Cloud Infrastructure: Designing and deploying scalable environments on Azure, AWS, and GCP. Containerised workloads with Docker, CI/CD pipelines, and infrastructure-as-code.
-Network Engineering: Firewall configuration (Fortinet), site-to-site and remote VPNs (IPSec/GRE), VLAN design, and network segmentation for performance and security.
-Cloud Security: Vulnerability assessments, penetration testing, security hardening, identity and access management, and compliance audits. Backed by CEH and Fortinet certifications.
-AI Automation: Building AI-powered workflows using Make, Zapier, and direct API integrations with Claude, GPT, and other LLMs. Custom scripting for complex automations that no-code tools cannot handle.
Background & Certifications:
-Bachelor of Engineering in Computer Networking, London Metropolitan University
-Microsoft Certified: Azure Administrator Associate
-Certified Ethical Hacker (CEH)
-Microsoft Certified: Azure Fundamentals
-Certifications in Fortinet, Network Security, and ICSI
I bring deep technical expertise paired with a practical understanding of how businesses actually run. Every solution I deliver is built for security, reliability, and long-term scalability, with clear documentation and direct communication throughout.
Ready to help you build infrastructure that works and automate the workflows that drain your team's time.
Network Security
Computer Network
Network Engineering
System Administration
Cloud Computing
Server Administration
Virtualization
IT Support
Cloud Security
Cloud Implementation
Azure DevOps
Microsoft Azure Administration
Make.com
Zapier
API Integration
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