000
Available for projectsBased in Jaffna, Sri Lanka

Senior Software Engineer.

Every problem is an opportunity to innovate.

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Portrait of Kugapriyan Jeyasingam
// 01 — About

Engineer first.Product minded.

Mobile & full stack engineer building fast, reliable apps with React Native, React, Next.js and NestJS — plus agentic AI features powered by LLMs.

Today I work on Maestro, an AI-powered luxury travel concierge, where I own features from design hand-off to App Store and Google Play releases. I also implemented Encore, its agentic AI travel assistant powered by LLMs, and built its mobile client.

Underneath the apps I am a full-stack engineer — React and Next.js on the web, Node.js and NestJS behind them — so I can own a feature from the API to the last animation.

Years building
4+
Projects built
15
Companies
4
// 02 — Expertise

What I build

Outcome first, stack second. Four ways I can help your product move.

  • Mobile app development

    Production React Native and Expo apps for iOS and Android — push notifications, deep linking, offline mode and store releases.

    React NativeExpoiOSAndroid

  • Full stack web

    Responsive, accessible web apps and dashboards with React and Next.js, with secure sign-in and clean API integration.

    ReactNext.jsTypeScriptKeycloak

  • Backend & APIs

    Node.js and NestJS APIs and microservices with role-based access, secure login and well-indexed databases.

    Node.jsNestJSMicroservicesMongoDB

  • Agentic AI

    LLM-powered AI assistants with real-time streaming and human-in-the-loop approval of agent actions, integrated into production mobile apps.

    LLMsOpenAISSEReact Native
// 03 — Stack

Tools of the trade

Mobile first, AI-driven, full-stack by habit.

  • React Native
  • Expo
  • TypeScript
  • iOS
  • Android
  • React Query
  • Zustand
  • Redux Toolkit
  • MMKV
  • Firebase
  • Next.js
  • React
  • Node.js
  • NestJS
  • Express
  • PostgreSQL
  • MongoDB
  • Prisma
  • Docker
  • PostHog
  • 08

    Mobile

    My home turf — cross-platform apps that feel native.

    • React Native
    • Expo
    • Redux Toolkit
    • Zustand
    • MMKV
    • Stream Chat
    • App Store Connect
    • Google Play Console
  • 06

    Frontend

    Typed, accessible, responsive.

    • React
    • Next.js
    • TypeScript
    • JavaScript
    • Tailwind CSS
    • React Query
  • 08

    Backend

    APIs that scale.

    • Node.js
    • NestJS
    • Express
    • Prisma
    • PostgreSQL
    • MySQL
    • MongoDB
    • Keycloak
  • 05

    AI

    Agentic features in shipped products.

    • Agentic AI
    • Large Language Models (LLMs)
    • OpenAI
    • SSE streaming
    • AI-assisted parallel workflows
  • 06

    Tools / DevOps

    Ship it safely.

    • Git
    • GitHub
    • Docker
    • PostHog
    • Grafana
    • Firebase
// 04 — Projects

Projects

Mobile products first — then the AI and web work around them. Open a card for the case study.

View all 15 projects
01 · Mobile2026

Senior Software Engineer – Mobile

Concierge chat, Google sign-in, push notifications and offline mode for an AI-powered travel app on iOS and Android, plus deep linking and PostHog analytics.

React NativeExpoTypeScriptNestJSStream ChatPostHog
App StoreGoogle Play
02 · Mobile2026

Senior Software Engineer – Mobile

Implemented an LLM-powered agentic travel assistant with human-in-the-loop approval of agent actions, and built its mobile client with SSE streaming, message queueing, stop/regenerate, concierge hand-off and dropped-stream recovery.

React NativeLLMs (OpenAI)Agentic AISSEZustandMMKV
03 · Mobile2025

Software Engineer | Mobile Developer

Mobile features for Kinso, the AI-powered networking platform from Founders Lab, including voice recognition and Microsoft contacts.

React NativeExpoRedux ToolkitSkiaAzure
04 · Mobile2025

Full Stack & Mobile Developer

Maps, real-time location tracking and location selection for a food delivery app.

React NativeExpoZustandReact QueryMaps
05 · Full stack2025

Full Stack Developer · Individual project

A complete mobile ordering app and backend, from sign-up to Stripe payment.

React NativeExpoNode.jsExpressMongoDBStripe
TASMU Digital Valley Platform — cover
06 · Web2025

Frontend Developer

Responsive, accessible front-end features and interactive dashboards with secure sign-in.

Next.jsReact QueryZustandKeycloakWordPress
View all 15 projects
// 05 — Experience

Where I have shipped

From Node.js microservices to owning mobile features for an AI-powered luxury travel concierge.

  1. Feb 2026 — Present

    Senior Software Engineer – Mobile

    Allion Technologies (client: Maestro)Now
    • Own React Native / Expo (TypeScript) features end-to-end, from design hand-off to App Store and Google Play releases.
    • Implemented Encore, an agentic AI travel assistant using Large Language Models (LLMs), and its mobile client with SSE streaming and human-in-the-loop approvals.
    • Worked full-stack: backend APIs, an internal ops dashboard feature, Google sign-in, push notifications and deep linking.
    • Adopted agentic development workflows, running AI coding agents in parallel for coding, review and testing.
  2. Apr 2025 — Jan 2026 · Part-time

    Full Stack & Mobile Developer

    Xeat
    • Built full-stack features for Xeat, including maps and real-time location tracking.
    • Developed Smart Nursing features with React Native and Node.js.
  3. Jan 2025 — Jan 2026

    Software Engineer | Mobile Developer

    Surge Global (via Zenson Pvt Ltd)
    • Developed mobile features for the Founders Lab AI networking platform with React Native (Expo) and Redux Toolkit.
    • Built TASMU Digital Valley Platform features with Next.js, React Query and Zustand.
  4. Nov 2023 — May 2024

    Front End Developer

    Bnovaslabs
    • Built responsive interfaces for a Dental Care Application with React and Tailwind CSS.
  5. Aug 2022 — Feb 2023

    Trainee Software Engineer (Microservices)

    Arimac Digital
    • Developed Node.js backend APIs in a microservice architecture, with role-based access and secure login.
// 06 — Education

Always learning

  • Completed
    2019 — 2024

    B.Sc. (Hons) Computing & Information Systems

    Sabaragamuwa University of Sri Lanka · Second Class (Upper Division)

  • Completed
    2016

    G.C.E. Advanced Level

    Physical Sciences

// 07 — Contact

Let's buildsomething

Hiring, building a startup, or need an app shipped? Tell me about it — I usually reply within two working days.

Available for projects · Jaffna, Sri Lanka
 
 
 
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