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abin.th

Full-Stack / Backend DeveloperAvailable for freelance

Hi, I'm Abin T H.

Building systems that scale beyond the demo.

A full-stack engineer with a backend focus. I design, build and run production software, from service architecture and APIs to cloud infrastructure and the interfaces people actually use.

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01About

I build the whole system, not just the ticket.

I'm a self-driven software engineer with around 4.5 years of experience across company and freelance work, building for clients and for products. I'm most at home in backend engineering: service design, data models, APIs and the infrastructure they run on. I'm comfortable taking a system from architecture all the way to deployment.

The interesting problems usually live between the layers: how a frontend talks to an API, how services hold up when traffic spikes, and how a release reaches production safely. That's where I like to work.

Quick facts

Available for freelance projects
Role
Full-Stack / Backend Developer · SDE 2
Experience
~4.5 years · company & freelance
Location
Bengaluru, India · IST (UTC+5:30)
Work mode
Remote · Hybrid
Core stack
Java · Spring Boot · Node.js · TypeScript · React · Next.js · AWS
Email
abinth.dev@gmail.com
  • 01

    Backend & system design

    Service boundaries, data models and APIs designed for the load they'll actually see.

  • 02

    Full-stack delivery

    Comfortable shipping the interface as well as the services, CMS and infrastructure behind it.

  • 03

    Cloud & infrastructure

    Containerised workloads on AWS, autoscaling, and separate staging and production environments.

  • 04

    Learning & problem solving

    I learn whatever the problem needs, whether that's a new language, a broker API or a deployment model.

02Now

What I'm working on right now.

Last updated · October 2026

  • Building

    Personal · Open source

    Trading Simulator

    A stock exchange simulator: Spring Boot services with a per-symbol matching engine, Kafka events published through a transactional outbox, and a React admin dashboard.

    • Java 21
    • Spring Boot
    • Kafka
    • PostgreSQL
    • Redis
    • React
    GitHub

  • At work

    SDE 2

    Platform → product

    Evolving the event management platform from a client build into a standalone product.

    • Java
    • Spring Boot
    • AWS ECS
    • Next.js
    Related case study

  • Learning

    Daily practice

    Data structures & algorithms

    Working through a structured DSA course alongside regular LeetCode practice.

    • Arrays & hashing
    • Trees & graphs
    • Dynamic programming
    • Heaps & stacks
    LeetCode profile

03Experience

Around 4.5 years of shipping production software.

Full-stack engineering on client and product work since January 2024, built on a year and a half of freelance work, with backend systems, cloud infrastructure and end-to-end delivery running through both.

  1. Services & products

    Jan 2024 – Present

    SDE 2 · Full-Stack Developer

    Company name withheld · Confidential

    Full-stack engineering at a company that builds software for clients alongside its own products, shipping production systems used by real customers.

    • Owned the backend and AWS infrastructure of an event platform supporting ~150K concurrent users at peak, sustaining <200 ms API responses at ~5K req/sec: 5 Spring Boot services on autoscaling ECS Fargate
    • Designed and built the core of an algorithmic trading platform: separate backtesting and live engines on the same strategy code, 7 broker integrations, 5× faster WebSocket trade feeds and 6× faster backtests
    • Owned the event-driven serverless backend (AWS Lambda, DynamoDB, SST) of a loyalty platform for a global brand, serving 100K+ users
    • Built an editorial and publishing platform for an industry association across backend, frontend, CMS and infrastructure, and contributed to a logistics platform
    • Now evolving the event platform into a standalone product
    • Mentor junior developers, review the team's code, and set up CI/CD pipelines and engineering standards
  2. Freelance

    2022 – 2023 · ~1.5 years

    Full-Stack / Backend Developer

    Independent

    Client engagements delivered end to end, from architecture to deployment, alongside an intensive software engineering bootcamp.

    • Built and open-sourced TutorTrek, an e-learning platform that has earned 120+ GitHub stars
    • Delivered a production e-learning platform for a client, building on TutorTrek's architecture
    • E-commerce platforms for clients
  3. Education

    2019 – 2022

    Bachelor of Computer Science

    College of Applied Science Thiruvambadi · University of Calicut

    Bachelor's degree in Computer Science.

04Selected work

Production systems, not side demos.

A few of the systems I've designed, built and shipped. Open any of them for the full case study. Confidential client work is labelled as such.

05Engineering

The toolbox, organised by layer.

I pick tools for the problem rather than the trend. These are the ones I've used to build and run real systems.

Languages

05
  • JavaScript
  • TypeScript
  • Java
  • Go
  • Python

Frontend

04
  • React
  • Next.js
  • Redux Toolkit
  • Tailwind CSS

Backend

08
  • Node.js
  • Express.js
  • Spring Boot
  • REST APIs
  • WebSockets
  • Microservices
  • Kafka
  • RabbitMQ

Databases

05
  • PostgreSQL
  • MySQL
  • MongoDB
  • DynamoDB
  • Redis

Cloud & Infrastructure

17
  • AWS
  • ECS
  • Fargate
  • Lambda
  • API Gateway
  • EC2
  • S3
  • CloudFront
  • SST
  • GCP
  • Docker
  • Nginx
  • CI/CD
  • GitHub Actions
  • Jenkins
  • Prometheus
  • Grafana

Engineering

07
  • System Design
  • DSA
  • Clean Architecture
  • MVC
  • Authentication
  • Security
  • Testing

06Architecture mindset

Thinking past the code.

Every layer of a system makes promises to the layers around it. Pick a concern to see what I look for at each layer.

Select a concern

“Design for the peak, pay for the average.”

  1. 01

    Client

    Web · Mobile web

    —

  2. 02

    Frontend

    React / Next.js · CDN-cached assets

    Static assets served from a CDN so traffic spikes don't reach the origin.

  3. 03

    API Gateway / Backend

    Routing · AuthN / AuthZ · Validation · Rate limits

    Stateless request handling, so any instance can serve any request.

  4. 04

    Services

    Domain services · Background workers · Stateless containers

    Services scale horizontally and independently, each based on its own load.

  5. 05

    Database · Cache · Queues

    PostgreSQL / MySQL · Redis · Queues · DynamoDB / MongoDB

    Hot reads served from Redis; slow work moved onto queues.

  6. 06

    Cloud Infrastructure

    AWS ECS / Fargate · Autoscaling · S3 · CloudFront · CI/CD

    Container tasks on ECS / Fargate that scale out for peak traffic and back in afterwards.

A reference architecture: the general shape of the production systems I build, not a diagram of any specific client system.

07Impact

Real systems. Real usage.

Figures from production systems and open-source work, and nothing else.

Years experienceCompany & freelance
4.5+
Concurrent users at peakEvent platform
~150K
Requests per second at peakEvent platform · <200 ms
~5K
Loyalty platform usersRewards platform
100K+
Broker integrationsTrading platform
7
GitHub starsTutorTrek · Open source
120+

08Contact

Have a system worth building?

A new platform, a service that needs to scale, or infrastructure that needs untangling. I'd like to hear about it.

abinth.dev@gmail.com