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11 followers · 12 following

Achievements

Achievement: Pull Sharkx3Achievement: YOLO

Achievements

Achievement: Pull Sharkx3Achievement: YOLO

Highlights

  • Pro

Organizations

@Wemo-20 @StemDevops @RosterMate @EdgeCare @T-C-Developers @CodeJam-by-CSE

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ThejanB/README.md

Thejan Weerasekara

Software Engineer · FinTech · Backend, Full-Stack & AI Systems

Building dependable software, scalable services, and intelligent digital products.

Portfolio  ·  LinkedIn  ·  Email

About

I’m a Software Engineer with professional experience in the FinTech domain, currently focused on backend engineering at GTN Technologies.

I work across production APIs, services, data flows, and large, complex legacy systems where reliability, maintainability, and careful delivery matter. I also build full-stack web and mobile applications and explore applied AI through RAG, agent-based workflows, and intelligent product features.

  • Backend engineering for production FinTech systems
  • Full-stack web and mobile product development
  • Large-scale and legacy system maintenance
  • Applied AI, RAG, and agent-based workflows

Technology Stack

Languages

Java   Python   TypeScript   JavaScript   Kotlin

Java · Python · TypeScript · JavaScript · Kotlin

Backend and APIs

Spring Boot   Node.js   FastAPI   Django

Spring Boot · Node.js · FastAPI · Django · REST APIs

Frontend, Mobile and Motion

React   Angular   HTML5   CSS3   Sass   Vite

React · Angular · React Native · HTML5 · CSS · Sass · Vite · GSAP

Data and Storage

PostgreSQL   MySQL   MongoDB

PostgreSQL · MySQL · MongoDB · ObjectBox

Applied AI

LangGraph · LangChain · Hugging Face · RAG · LLM APIs · Agent Workflows

Cloud, CI/CD and Delivery

AWS   Docker   Git   GitLab   GitHub Actions   Nginx   Linux

AWS · Docker · Git · GitHub Actions · GitLab CI/CD · Nginx · Linux

View my portfolio  ·  Start a conversation

Popular repositories Loading

  1. ThejanB ThejanB Public

    Config files for my GitHub profile.

  2. SimpleExpenseManager SimpleExpenseManager Public

    Forked from GayashanNA/SimpleExpenseManager

    This is an android based basic expense manager application which will be used as a lab assignment for CS3042 - Database Systems course module.

    Java

  3. Money-Manager-Moblie-App Money-Manager-Moblie-App Public

    A expence manager that can manage both own expenses, and group expenses in a group and divide the money equally amoung group

    JavaScript

  4. RPAL-Interpreter-1_Thejan RPAL-Interpreter-1_Thejan Public

    Forked from tharoosha/RPAL-Interpreter

    Implement a lexical analyzer and a parser for the RPAL language. Output of the parser gives the Abstract Syntax Tree (AST) for the given input program. Implemented an algorithm to convert the Abstr…

    C++

  5. ShopHere---E-commerce_platform ShopHere---E-commerce_platform Public

    PHP

  6. Smart_Medi_Box Smart_Medi_Box Public

    Micro Controller Project

    C++