Working as a full-stack developer, on an application with backend using JAX-RS, Spring frameworks and a front-end built on Angular embedded in a chromium wrapper, to serve the purpose of a desktop application with PKI card security and session with Database usage. The application deals with complex calculations and algorithms, as the application usage is done for CO2 calculations for various fleets of cars manufactured by the company, with multiple options available for data manipulations and various tree-graph based structures created on UI and evaluated accordingly.Also was responsible for the migration of application from Angular7 to Angular15, and successfully achieved the same along with the required CI/CD pipeline configurations.

Manipulated third party systems and UI by making adjustments to its cookie sessions, and enabledoptions to do the functionalities present in the UI to be done and triggered from outside of the third-party UI, to enable flexible usage and embedding of third-party UI by by-passing its security.

Backend REST API service, created in Spring Boot, Spring MVC with Spring Security and JWT token authorization and made the design to be fit for more than 10 different teams for their primary work regarding creation of Invoices,Letters,etc. being migrated to the API.Frontend Angular UI integrated with the API and made it 90% dynamic by creating a Oracle SQL DB design that addresses most of the previously hard-coded UI forms. UI integration with the new API made the UI transactions secure upto 95%, by using AES Encryption to hide credentials from UI and API's Bearer token security.

Analyzed security for third party APIs, and automated replication of the processes and API calls up to 70% using python scripts for various Android and iOS Apps, for the purpose of automating digital marketing.The role required, going through various third party requests made by the mobile apps for tracking activities performed in the application, and handling the security using cookies, hashing and encryptions.Randomized the parameters automated across the various API calls to get up to 60% of organic reach on the mobile apps.