Hello, I'm

Kousigan A

|

Microsoft Dynamics 365 Business Central | Full-Stack & AI Engineer. Shipping enterprise ERP extensions, AI-powered QA automation, and cloud-native applications.

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About Me

R&D Engineer at Aptean building enterprise-grade ERP solutions on Microsoft Dynamics 365 Business Central

Architecting AI-powered test automation pipelines using LLMs, reducing manual QA effort by 80%

Published 7 production apps on Microsoft AppSource serving global F&B enterprise clients

Full-stack engineer proficient in React, TypeScript, Node.js, Python, and cloud-native architectures

Hands-on experience with RAG pipelines, AI agents, prompt engineering, and MCP integrations

Passionate about shipping product — from IoT prototypes to scalable SaaS platforms

Languages:Tamil(Native)English(Professional)

Professional Journey

R&D Engineer — Development

Aptean

Jul 2025 - Present · 9 mosTamil Nadu, IndiaFull-time

Spearheading AI-driven test automation and LLM integration for the Business Central R&D division. Leading cross-functional initiatives to modernize QA workflows with GPT-based code generation.

Key Achievements

Architected an LLM-powered test automation pipeline that generates AL ATDD test cases from user stories, cutting manual QA effort by 80%
Integrated GPT models with Azure AI Studio for intelligent test scenario generation with 92% accuracy
Leading a cross-functional R&D squad to ship AI-augmented developer tooling across the BC product line
Designed and deployed CI/CD-integrated PR automation reducing review-to-merge cycle time by 40%
Driving adoption of AI agents and MCP servers for autonomous workflow orchestration

Published Apps (1)

Advanced Pricing

Technologies

Azure AI StudioLLM IntegrationAL ProgrammingATDDMicrosoft Business CentralPythonNode.jsAzure DevOpsCI/CDGitHub APIPrompt EngineeringRAG

Associate R&D Engineer — Development

Aptean

Aug 2023 - Jul 2025 · 1 yr 11 mosTamil Nadu, IndiaFull-time

Core contributor to the Dynamics 365 Business Central product team. Shipped 6 AppSource-certified extensions for the Food & Beverage vertical while building internal test automation tooling.

Key Achievements

Published 6 Microsoft AppSource-certified apps for Dynamics 365 BC (Packaging, Buffer Order, Order Minimums, Lot Management, Trading Board, Advanced Pricing)
Built the BC Test Assistant — an internal tool that auto-generates ATDD test scaffolding from requirements, saving ~20 hours/sprint
Implemented end-to-end ATDD pipelines with automated PR workflows, achieving 95% test pass rate on first run
Developed complex RDLC/Word report layouts for enterprise invoicing and compliance reporting
Established API integration patterns adopted as team-wide standards for BC extension interoperability

Published Apps (6)

Packaging Buffer Order Order Minimums Lot Management Trading Board Advanced Pricing

Technologies

AL ProgrammingMicrosoft Business CentralATDDAzure DevOpsRESTful APIsRDLC ReportsWord ReportsGitScrumApp IntegrationPull Request Automation

Skills & Expertise

Enterprise ERP

Microsoft Dynamics 365 Business Central

Senior3+ yrs

AL ProgrammingBusiness CentralATDDRDLC / Word ReportsAzure DevOpsAppSource PublishingAPI IntegrationSAP ABAP

AI / ML

LLMs, Agents & Intelligent Automation

Senior1+ yr

Prompt EngineeringRAG PipelinesAzure AI StudioAI AgentsMCP ServersLLMs (GPT / Claude / Gemini)Scikit-learnContext Engineering

Full-Stack

Web & Mobile Development

Senior3+ yrs

ReactTypeScriptNext.jsNode.jsPythonFlaskReact NativeMongoDB

Cloud & DevOps

Infrastructure, CI/CD & Orchestration

Mid-Level2+ yrs

Microsoft AzureGoogle CloudFirebaseDockerKubernetesCI/CD PipelinesGit / GitHubScrum / Agile

IoT & Embedded

Microcontrollers & Sensor Networks

Mid-Level2+ yrs

ESP32 / ESP8266ArduinoMAX30102 (Pulse Ox)DHT11 / DHT22Relay ModulesWi-Fi / BLE

Low-Code & Analytics

Power Platform & Observability

Mid-Level1+ yr

Power AppsPower AutomateGoogle AnalyticsFirebase AnalyticsSEO / Search ConsoleLinux / CLI

Projects

2025

BC Test Assistant — AI-Powered QA Automation

In Production

AI AutomationLead Developer2025 — Present

LLM-driven platform that auto-generates ATDD test cases from user-story documents, slashing manual QA effort by 80% across the Business Central R&D pipeline.

QA Effort Reduced: 80%

Generation Latency: < 30s

First-Pass Accuracy: 92%

GPT / LLMAzure AI StudioMicrosoft Business CentralAL / ATDDNode.js+4

2023

IoT Wearable Health Monitor

Completed

IoT & HealthcareIoT & Full-Stack Developer2023 (4 months)

Real-time vital-sign monitoring system using ESP32, MAX30102 pulse oximetry, and DHT11 sensors — accessible globally via a React web dashboard with Firebase backend.

Sensor Accuracy: 96%

Latency: < 2s end-to-end

Uptime: 24/7 monitoring

ESP32MAX30102DHT11ArduinoReact.js+4

2022

Smart Home Automation System

Completed

IoT & EmbeddedIoT Engineer2022 (3 months)

ESP8266/ESP32-based home automation platform controlling AC/DC loads via relay modules with a real-time web interface and temperature-adaptive fan control.

Response Time: < 1s

Temp Accuracy: +/- 1 C

Energy Savings: ~30%

ESP8266ESP32DHT11Relay ModulesArduino+3

2021

CGPA Prediction Engine

Completed

Machine LearningML Engineer2021 (4 months)

Supervised ML model predicting student CGPA from academic and behavioral features — deployed as a Flask web app with interactive visualizations.

Accuracy: 87%

R-squared: 0.84

Dataset: 1000+ records

PythonScikit-learnPandasNumPyMatplotlib+2

Education & Certifications

Education

Bachelor of Technology — Information Technology

Kalasalingam Academy of Research and Education

2019 - 2023Tamil Nadu, IndiaCGPA: 8.87 / 10

Key Achievements

Graduated with First Class Distinction — CGPA 8.87/10
Built and deployed ML and IoT projects presented at department symposiums
Active in competitive programming and inter-college hackathons

Relevant Coursework

Data Structures & AlgorithmsSoftware EngineeringDBMSMachine LearningCloud ComputingComputer NetworksOperating SystemsOOP

Certifications

SAP Certified Development Associate — ABAP with SAP NetWeaver 7.50

SAP

Verify

SAP ABAPNetWeaverERP Development

Leaders of Learning (GSE2x)

HarvardX — edX

Verify

LeadershipLearning Design

Data Science

Asia University (Taiwan)

Verify

Data ScienceMLPython

Cybersecurity Essentials

Cisco — NASSCOM FutureSkills

Verify

Network SecurityThreat DetectionOWASP

Cloud Development — HTML5, CSS3, JavaScript

IBM — edX

Verify

Cloud DevHTML5JavaScript

Building a Cybersecurity Toolkit (CYB003x)

UWashingtonX — edX

Verify

Security AssessmentRisk Management

Introduction to Linux

Linux Foundation — edX

Verify

LinuxCLISysadmin

Fundamentals of Digital Marketing

Google

SEOSEMAnalytics

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