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Senior Web, Frontend, and Mobile Developer with a strong focus on React and TypeScript. I build clean, scalable, and user-friendly web and mobile applications and enjoy working close to the product and end users. Reliable, communicative, and experienced in both startup and enterprise environments.…

Sayan Vaheesan

Front-End Developer, Web Developer, App Developer, +1

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Senior Web, Frontend, and Mobile Developer with a strong focus on React and TypeScript. I build clean, scalable, and user-friendly web and mobile applications and enjoy working close to the product and end users. Reliable, communicative, and experienced in both startup and enterprise environments.…

Available to hire

Senior Web, Frontend, and Mobile Developer with a strong focus on React and TypeScript. I build clean, scalable, and user-friendly web and mobile applications and enjoy working close to the product and end users. Reliable, communicative, and experienced in both startup and enterprise environments.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

German

Fluent

English

Advanced

Tamil

Fluent

Work Experience

Frontend Application Developer at ADS Swiss Net AG

July 1, 2024 - May 1, 2026

Development and continuous improvement of React frontend applications for the onboard portal of the Electronic Patient Dossier (EPD). Design and implementation of UI/UX concepts in close collaboration with stakeholders. Backend enhancements with Java and database integrations to improve maintainability, performance, and usability.

Frontend Application Developer at Abraxas Informatik AG

September 1, 2022 - May 1, 2024

Development and maintenance of React frontend applications; close collaboration with UI/UX designers; extension of backend functionalities (Java) including database integration.

Full Stack Application Developer at ERNI Schweiz AG

October 1, 2020 - July 1, 2022

Software development in complex client projects; building applications with Angular and Java; collaboration with interdisciplinary, agile teams.

Medical Informatics Application Developer at Cistec AG

August 1, 2019 - August 1, 2020

Development and maintenance of medical informatics applications using Q-Script.

Driver (C1) at Swiss Military Service

March 1, 2015 - August 1, 2015

Swiss military service as a driver.

Java Application Developer at Unique AG

August 1, 2014 - February 1, 2015

Java application development for various client projects.