Arjun is available for hire

Arjun Subash

Verified Expert in Engineering

Full-stack Developer

Manama, Capital Governorate, Bahrain

Toptal member since October 26, 2022

Expertise

JavaScript CSS Express.js Node.js MongoDB REST API Database TypeScript React.js Next.js Redux Discord Bot OpenAI Linux

Bio

Arjun is an experienced full-stack developer and a lifelong learner passionate about coding and learning new technologies. His hands-on experience in fintech and healthtech projects led him to acquire deep knowledge about IT security related to the financial and health sectors. Arjun is proficient in multiple technology stacks and is willing to keep learning while embracing new projects.

Portfolio

Financial Institution

JavaScript, TypeScript, Node.js, React, MSSQLCE, DB, Oracle Database, Git...

Healthtech Startup

TypeScript, JavaScript, MongoDB, Express.js, React, Next.js, Redux, Redux-Saga...

Experience

JavaScript - 6 years
Express.js - 5 years
Node.js - 4 years
MongoDB - 4 years
Python - 4 years
TypeScript - 2 years
React - 2 years
Next.js - 2 years

Availability

Part-time

Preferred Environment

TypeScript, Next.js, Node.js, Express.js, Git, React, JavaScript, MongoDB, Linux, Redux

The most amazing...

...solution I've built is a monitoring system that integrates a financial institution's multiple systems.

Work Experience

Full-stack Developer

2018 - PRESENT

Financial Institution

Developed a monitoring system to monitor, track, and produce reports of several connected and on-demand systems.
Reverse-engineered and built REST API wrappers for older software to be integrated with different systems.
Built tools to manage daily processes and activities, improving users' performance.
Oversaw and contributed to a comprehensive automation process that allowed a recurrent operation to be done with very little or no user intervention.

Technologies: JavaScript, TypeScript, Node.js, React, MSSQLCE, DB, Oracle Database, Git, API Integration, APIs, REST APIs, React Redux, Single-page Applications (SPAs), CSS, Express.js, NoSQL, Next.js, Redux, Redux-Saga, Databases, Database Design, Full-stack, Full-stack Development, Charting, Charts, REST, HTML, Axios

Team Lead

2020 - 2021

Healthtech Startup

Designed and built the architecture of an OAuth-like system for a multiservice platform, including the company's main product in the healthtech category.
Built dashboard and control panel for platform management, with capabilities to manage the entire platform, such as user profile and platform features, with segregated control of roles and permissions.
Found and fixed vulnerabilities in the existing platform, thus improving the security of the platform.
Tracked and fixed bugs in the existing platform using tools like Jira, Slack, and GitHub.

Technologies: TypeScript, JavaScript, MongoDB, Express.js, React, Next.js, Redux, Redux-Saga, React Native, Node.js, REST APIs, APIs, Linux, Python, React Redux, Amazon Web Services (AWS), Docker, Docker Compose, Git, Single-page Applications (SPAs), CSS, WebSockets, Android, NoSQL, API Integration, Databases, Database Design, Firebase, Full-stack, Full-stack Development, REST, HTML, Axios, Auth, Jest

Experience

Advanced Monitoring System

Built a monitoring application based on Node.js. It connects multiple databases, tools, webpages, logs, and other systems to fetch, store and show the parsed data, alerts, reports, and graphs on a modern web-based front end. Users can then visualize and act on the data through a thoroughly engineered UX and a fluent UI experience.

Multi-service Platform

A multi-service platform designed to accommodate the needs of various services/subsidiaries of the same holding company, with an OAuth-like authentication system, helps the end-users access all the platforms with single login while all the data is well segregated in the databases of respective services.

Utility Bot

A Node.js-based utility bot for guild (or server) management in Discord (a social network). I worked as the sole developer of the project from idea to execution, building the bot to be extremely customizable, secure, and feature-rich.

Skills

Libraries/APIs

Node.js, React, Redux-Saga, REST APIs, React Redux, Auth

Tools

Git, Docker Compose

Languages

JavaScript, TypeScript, CSS, HTML, Python, Kotlin

Frameworks

Express.js, Next.js, Redux, React Native, Jest

Paradigms

Database Design, REST

Storage

MongoDB, Databases, DB, NoSQL, MSSQLCE

Platforms

Oracle Database, Linux, Android, Amazon Web Services (AWS), Docker, Firebase, Act-On

Other

API Integration, APIs, Single-page Applications (SPAs), Axios, Discord Bots, Discord, WebSockets, OpenAI, Full-stack, Full-stack Development, Charting, Charts

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