SP
Available for select product engineering roles

Building resilient backend systems and AI-native products that ship.

I’m a software engineer focused on production SaaS, backend architecture, and LLM-integrated systems that turn complex requirements into reliable products.

LaravelPythonReactNext.jsOpenAIREST APIsRBACMySQL
500+
Users Served
70%
Manual Effort Reduced
40%
API Improvement
Portrait illustration of Sheromi Paramanathan
Focus
Production SaaS • AI systems • Backend architecture
Location
Colombo, Sri Lanka

Production Deployments

High-impact systems engineered for scale.

View all deployments →
Core Infrastructure
System Active
Featured work

High-Integrity Intelligence & Recruitment Ecosystem

A production-grade recruitment ecosystem engineered to automate high-volume hiring through semantic AI evaluation, reducing manual screening effort by 70%.

Case study
EFFORT REDUCTION
70%
API PERFORMANCE
+40%
AVAILABILITY
99.9%
ARCHITECTURE
N-Tier

AI News Aggregation

View project

Automated news ingestion system with similarity detection and duplicate removal using Perplexity API and OpenAI Embeddings.

/Perplexity API/OpenAI Embeddings

LMS Intelligence

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Learning analytics platform with ETL pipelines, automated reporting, and student performance dashboards.

/Laravel/MySQL

ExecutionOS – Personal Productivity & Execution Intelligence Platform

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A productivity-first SaaS platform built to measure execution performance through structured Morning Check-In and Evening Debrief workflows.

/Laravel/MySQL/Tailwind CSS

Real-Time Yoga Pose Correction System

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AI-powered mobile app using MoveNet for skeleton keypoint detection and a custom CNN for 90%+ accurate pose classification.

/Python/TensorFlow/MoveNet

Engineering Tenure & Impact

Jul 2025 — May 2026

Associate Software Engineer

Balanita Pvt Ltd, Colombo

Core Mandate: Led the design and development of a multi-tenant LMS Intelligence Platform, unifying multiple WordPress LMS environments through custom ETL pipelines and REST APIs to enable centralized cross-organization analytics.

  • Led design and development of a multi-tenant LMS Intelligence Platform, unifying multiple WordPress LMS environments through custom ETL pipelines and REST APIs to enable centralized cross-organization analytics.
  • Built a compliance monitoring engine that flagged at-risk learners and surfaced completion trends via real-time dashboards, giving stakeholders organization-wide visibility into performance for the first time.
  • Engineered the ETL pipeline architecture (extract, transform, load) for ingesting data from multiple external LMS platforms, enforcing data consistency checks that made downstream analytics reliable.

Core Mandate: Owned backend architecture for an AI-powered Applicant Tracking System serving 500+ users, designing the LLM-based resume evaluation pipeline and re-architecting core APIs for performance and reliability.

  • Owned backend architecture for an AI-powered Applicant Tracking System serving 500+ users; designed the LLM-based resume evaluation pipeline that cut manual screening effort by 70%.
  • Re-architected core REST APIs applying SOLID principles, targeted database indexing, query optimization, Laravel Queue Workers, and caching - reducing average response time 40% (800ms → 480ms).
  • Built a news aggregation and content-intelligence system that turned raw web data into structured feeds, using embedding-based semantic deduplication and a multi-LLM orchestration pipeline spanning Perplexity, GPT, Gemini, and Claude.
  • Developed an LMS pricing calculator that cut quotation preparation time from 30 minutes to 2 minutes, letting Business Analysts and Sales generate accurate cost estimates on demand.
  • Designed a three-tier RBAC and secure authentication layer underpinning an MVP AI-powered recruitment platform, including a dynamic form engine and automated candidate-ranking model.
  • Partnered with product and design to compress the feature-delivery cycle from 4 weeks to 2 weeks, shipping production features on a recurring release schedule.
LaravelMySQLQueue WorkersCachingLLM Orchestration
Jan 2025 — Jul 2025

Software Engineer Intern

Balanita Pvt Ltd, Colombo

Core Mandate: Built the MVP of an AI-powered ATS Intelligence System from scratch, covering resume scoring, CV generation, and order workflow, later adopted as the foundation for a platform now serving 500+ users.

  • Built the MVP of an AI-powered ATS Intelligence System from scratch - resume scoring, CV generator, and order workflow - later adopted as the foundation for a platform now serving 500+ users.
  • Diagnosed and fixed critical data-integrity and UI-responsiveness defects in a survey platform, preventing loss of 10,000+ responses and cutting page load time from 8s to 2s.
  • Triaged and resolved 15+ production issues, improving system stability and reducing user-reported errors.
PHPLaravelATSUI ResponsivenessProduction Support

Validated Credentials

BSc in Computer Science

Eastern University of Sri Lanka

Aug 2021 — Dec 2024GPA: 3.60 / 4.00
Second Class Upper

Advanced Level - Physical Science

Vincent Girls High School, Batticaloa

Combined Mathematics . Physics

2010 — 2018
Verified
SLIIT Certified AI/ML Engineer (Stage 1)

SLIIT

Verified
Web, Backend & Python Programs

University of Moratuwa

Verified
GitHub Professional Certificate

Career Essentials in GitHub

Verified
Generative AI & Copilot Series

Microsoft & LinkedIn Learning

Verified
Fundamentals of Agile Project Management

Project Management Institute

Technical Infrastructure

A comprehensive audit of the core systems, data layers, and intelligence models engineered for production-grade reliability and performance.

Backend & Systems

PHP
Laravel
Flask
Node.js
RESTful API Development
Authentication & Authorization (RBAC)
MVC Architecture
Service-Oriented Architecture (SOA)
Repository Pattern
Laravel Queue Workers
SOLID Principles
Scalable Backend Systems

Data & Databases

MySQL
Schema Design
Query Optimization
Indexing
Relational & Multi-tenant Schema Design
ETL Pipelines
Data Normalization
Caching Strategies
Workflow Orchestration

AI & ML

LLM Integration
OpenAI API
Embeddings
Vector Search
Semantic Similarity
Multi-LLM Orchestration
Prompt Engineering
OCR Processing

Frontend, Tools & Delivery

JavaScript
TypeScript
React.js
Next.js
HTML/CSS/JS (Strong)
Vue.js (Foundational)
Git/GitHub
Postman
Apache JMeter
API Testing
Unit Testing
Integration Testing
Agile/Scrum
Code Reviews
cPanel
xCloud