Amodh Herath // Engineering Ledger

I write backend software focused on distributed architecture and system reliability. Instead of just wrapping APIs, I build the middleware that makes AI integration viable in production—handling the network edge, managing asynchronous events, and ensuring services communicate reliably without dropping data. I care about fault tolerance, concurrency, and engineering clean backend logic that stays fast under real-world load.

Operational Experience

Fullstack AI Engineering Intern

Dilexus Infotech

2025 - Present

Co-developed the frontend dashboard and user workspaces using Next.js, TypeScript, and Tailwind CSS, focusing on responsive design, stateless authentication, and Core Web Vitals optimizations.
Designed and implemented a normalized 3NF relational database schema using Prisma and PostgreSQL, integrating soft-deletion and automated audit trails to ensure financial data compliance.
Engineered a localized, air-gapped document intelligence pipeline by integrating IBM's Docling for geometric layout parsing and serving quantized Small Language Models (SLMs) via Ollama.
Built the asynchronous API and service layer with FastAPI, implementing validation schemas with Pydantic and decoupling heavy computation from web requests using background task queues.
Containerized services using multi-stage Docker configurations to reduce footprint, and established secure bridge networks to isolate internal services and enable local GPU acceleration.

Featured Projects

View All Projects

ID	System	Architecture	Core Stack	Status
SYS-02	SazzlerMicroservices-based e-commerce backend built on event-driven architecture, distributed caching, and state machine choreographies.	Backend Engineer	Java, Spring Boot, Spring Cloud, Kafka, PostgreSQL, MongoDB	Ongoing
SYS-01	Janus Security GatewayAn ultra-low latency AI API gateway and reverse proxy featuring asynchronous prompt injection defense, PII redaction, and automated LLM fallback routing.	AI/Backend Engineer	Go, Python, gRPC, Redis, Docker	Ongoing
SYS-04	Centurion AIOpsA polyglot AIOps platform orchestrating self-healing infrastructure via Event-Driven Architecture, durable execution, and LLM-based root cause analysis.	AI/SRE Engineer	Java, Python, TypeScript, Kafka, Temporal, PGVector, LangGraph	Ongoing

SYS-01

Janus Security Gateway

Ongoing

An ultra-low latency AI API gateway and reverse proxy featuring asynchronous prompt injection defense, PII redaction, and automated LLM fallback routing.

Architecture: AI/Backend Engineer

Core Stack: Go, Python, gRPC, Redis, Docker

SYS-02

Sazzler

Ongoing

Microservices-based e-commerce backend built on event-driven architecture, distributed caching, and state machine choreographies.

Architecture: Backend Engineer

Core Stack: Java, Spring Boot, Spring Cloud, Kafka, PostgreSQL, MongoDB

SYS-03

Portfolio

Production

Static site engineered to showcase backend architecture, system design case studies, and engineering maturity.

Architecture: Frontend Engineer

Core Stack: Next.js, TypeScript, Vercel

SYS-04

Centurion AIOps

Ongoing

A polyglot AIOps platform orchestrating self-healing infrastructure via Event-Driven Architecture, durable execution, and LLM-based root cause analysis.

Architecture: AI/SRE Engineer

Core Stack: Java, Python, TypeScript, Kafka, Temporal, PGVector, LangGraph

SYS-05

Sortify

Completed

A full-stack AI application that processes and classifies waste materials using a custom machine learning model.

Architecture: Fullstack AI Engineer

Core Stack: React, FastAPI, Pytorch

SYS-06

Sinhala Emotion Recognition

Ongoing

A deep learning research project focused on multi-class emotion detection(Ekaman's Basic Emotions) for the low-resource Sinhala language using a hybrid SinBERT-CNN architecture.

Architecture: AI Researcher & Engineer

Core Stack: SinBERT (RoBERTa), PyTorch, CNN, FastAPI

SYS-07

Spring Boot Pilot Project

Completed

A production-grade Spring Boot REST API featuring JWT authentication, role-based access control, and Argon2 password hashing.

Architecture: Backend Engineer

Core Stack: Java 21, Spring Boot 3, Spring Security, JJWT, Oracle DB, Gradle

Academic Baseline

B.Sc. Computer Engineering (hons)

2026

University of Jaffna

▹ Systems & Infrastructure: Operating Systems, Computer Networking, Computer Architecture, Computer and Network Security.
▹Intelligence & Data: Machine Learning, Deep Learning, AI, Data Mining.
▹Software Engineering: Software Architecture, DS & Algorithms, Database Systems.
▹Research - Emotion Recognition of Sinhala Language Texts in Social Media