Open to opportunities

Jinson Joseph

@jinsonjoseph

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Backend-focused full-stack developer building secure, scalable API systems.

India

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What I'm looking for

I’m looking for a backend-focused full-stack role where I can architect secure, scalable APIs, collaborate with frontend teams, and ship real products. I value continuous learning, clean integrations, and measurable QA improvements.

I’m a backend-focused Full-Stack Developer with 6 years of hands-on experience building scalable, secure, and efficient backend systems. My core strength lies in architecting APIs and handling complex server-side logic, while expanding my frontend skills to round out my full-stack capability.

At Appteq Technology Solutions, I led the development of a Crypto Payment Gateway supporting BTC, ETH, BNB, and TRX. I designed custom security mechanisms to protect against reverseengineering and fraud (IP masking, token obfuscation, request signatures, and server-side transaction validation) and built internal tools to monitor and log blockchain activity for audit and dispute resolution. I also contributed to inflightdubai.com with scalable backend features, optimized API endpoints, and seamless third-party integrations, and I built Selenium-based automation frameworks to improve QA coverage and reduce regression time.

Previously at ZH Healthcare, I redesigned a RESTful API in Java (SpringBoot) replacing an older PHP module for medicine-allergy contraindication checks. I handled EHR integration using SpringDataJPA and MySQL, and used SpringSecurity for secure token-based access control to protect sensitive patient data. I’ve also developed a custom HRMS with role-based access and built and maintained CodeIgniter (PHPMVC) and WordPress applications, focusing on stability, maintainability, and usability for both internal teams and clients.

Experience

Work history, roles, and key accomplishments

Current

Senior FullStack Developer

Current

Appteq Technology Solutions

Jul 2024 - Present (2 years)

Led development of a crypto payment gateway supporting BTC, ETH, BNB, and TRX, integrating blockchain APIs for transaction handling and real-time wallet management. Built security mechanisms to deter reverse engineering and fraud, developed internal audit/monitoring tools, and supported scalable backend work for inflightdubai.com using PHP, Node.js (Express), Postgres, and REST APIs.

Crypto Payments BNB Transaction Monitoring IP Masking Server Side Transaction Validation Audit Logging Selenium PHP Node Express PostgreSQL REST APIs

Software Developer

ZH Healthcare

Nov 2023 - May 2024 (6 months)

Redesigned and implemented a RESTful API in Java (Spring Boot) to replace an older PHP module for checking medication-allergy contraindications. Processed patient medication data in real time via JSON requests from the PHP frontend, integrated with an internal EHR database, and secured access using Spring Security token-based controls.

Java Spring Boot REST APIs PHP JSON MySQL Spring Security Token Based Access Control EHR Integration Allergy Assessment

Software Developer

Codepoints Software Pvt Ltd

Dec 2021 - Sep 2023 (1 year 9 months)

Contributed to the development of a custom HRMS covering the employee lifecycle from onboarding and attendance through payroll, bonuses, and exit workflows. Built and optimized backend modules in PHP with MySQL, and implemented role-based access for HR, management, and employees.

Employee Onboarding Payroll Bonus and Increment Calculation PHP MySQL Role Based Access Control REST APIs CRUD Operations Data Modeling SQL Query Optimization

Software Developer

ISPG Technologies

Jun 2020 - Dec 2021 (1 year 6 months)

Worked on in-house applications built with CodeIgniter (PHP MVC) and WordPress to support internal operations and client-facing portals. Maintained CodeIgniter modules, customized WordPress themes and plugins, and supported deployments, server configuration, and basic application support.

CodeIgniter PHP WordPress Query Optimization Plugin Development Deployment Configuration Testing Support

Developer

Virtual Sys Technologies Pvt Ltd

Jun 2018 - Apr 2020 (1 year 10 months)

Joined as a trainee/junior developer and contributed to small-scale web projects under senior supervision. Worked with PHP, HTML/CSS, and basic JavaScript, supporting form handling, CRUD operations, basic SQL, debugging, and testing/documentation tasks.

PHP HTML CSS JavaScript CRUD Operations SQL Debugging Testing Support Documentation

Education

Degrees, certifications, and relevant coursework

Marian College Kuttikkanam

Master of Computer Application, Computer Applications

2013 - 2016

Gained a strong foundation in software development, data structures, algorithms, OOP, and databases. Covered core subjects including Operating Systems, Computer Networks, Web Technologies, and Software Engineering.

Swami Saswathikananda College

Bachelor of Computer Application, Computer Applications

2008 - 2013

Completed a Bachelor of Computer Application program with a foundation in core computing concepts. Studied relevant subjects leading into software development and related technical areas.