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Tibor Halmen

@tiborhalmen

Frontend Team Lead at Sagemcom Magyarország Kft, guiding frontend development and shaping scalable, maintainable solutions.

Hungary

Message

At Sagemcom Magyarország Kft, I lead and mentor frontend developers while driving the architecture and design of scalable, maintainable frontend solutions. I coordinate delivery through sprint planning, task allocation, code reviews, and regular Scrum rituals.

Previously, at Diaverum (via Kibit Solutions), I worked on an internal patient and hospital management web application, helping coordinate frontend work and develop technical solutions for new epics. Across my roles, I’ve contributed to web applications and component libraries using React, TypeScript, and related frontend technologies.

Experience

Work history, roles, and key accomplishments

Current

Frontend Team Lead

Current

Sagemcom Magyarország Kft

Oct 2025 - Present (1 year)

Lead, mentor, and manage frontend developers, conducting Scrum rituals, 1:1s, and performance reviews. Drive architecture and design of scalable frontend solutions, oversee sprint planning, and ensure timely delivery of high-quality features.

React Angular NodeJS TypeScript OpenAPI Formik Material UI React Query Docker Leadership Scrum Code Review

Senior Frontend Developer

Diaverum

Jul 2023 - Sep 2025 (2 years 2 months)

Worked on an internal patient/hospital management web application, coordinating frontend team activities, code reviews, and technical task breakdown. Collaborated with project managers, backend developers, and designers to ensure smooth delivery.

React TypeScript OpenAPI React Hook Form Material UI React Query Team Coordination Code Review

Senior Frontend Developer

SEON Technologies

Feb 2021 - Apr 2023 (2 years 2 months)

Worked on full stack projects including WordPress and Strapi CMS websites, and an authentication service. Daily activities included project planning and mentoring junior developers.

React Preact Next.js NodeJS NestJS TypeScript AWS Lambda WordPress Strapi

Senior Frontend Developer

MSCI

Oct 2020 - Jan 2021 (3 months)

Worked on a React-based stock exchange calculator web application, modifying and developing existing architecture, and contributing to an in-house frontend component library. Wrote Jest tests and performed bug fixing and maintenance.

React SASS Jest Frontend Architecture Component Libraries

Senior Frontend Developer

Agillic AS

May 2019 - Oct 2020 (1 year 5 months)

Recreated the frontend for a cloud-based marketing automation solution in React, created a UI component library, and designed frontend architecture. Managed and supervised junior frontend developers as temporary tech lead.

React Redux TypeScript Functional Programming Stylus Sass Cypress UI Component Library

Developer

Freelancer

Jan 2019 - May 2019 (4 months)

Implemented smaller and bigger features in websites' back and front-end.

NodeJS PHP C#.NET Next.js React Redux Vue.Js AngularJS

Web Developer

Vertica Norge AS

Mar 2018 - Oct 2018 (7 months)

Worked as backend developer in .NET and frontend developer in AngularJS, Vue.js, and CSS. Created CMS functionalities and templates using Umbraco CMS, and performed testing and debugging.

C#.NET AngularJS Vue.Js CSS Umbraco JavaScript

Developer

myVR Software AS

Jan 2017 - Dec 2017 (11 months)

Developed new front-end for internal site, fixed bugs in company SDK, added new features, performed software testing, set up and maintained build-bots, and updated documentation.

JavaScript NodeJS Inferno React C++Objective C Android

System Developer

Patientsky AS

May 2016 - Aug 2016 (3 months)

Changed and developed the system build up.

PHP Symfony

Software Tester

TV 2 Danmark

Sep 2014 - Sep 2015 (1 year)

Developed automated tests for applications using Java, Appium, and Selenium. Executed functional and user tests, reported bugs, documented and executed regression tests, and performed test status reporting.

Java Appium Selenium PHP HTML XML Testing

Mobile Developer (Intern)

S.C. Smartsoft Serv SRL

Jun 2013 - Aug 2013 (2 months)

Created a movie streaming player application, including database structure in SQL, connecting with Android via content provider, implementing animations, and writing test functions in Java.

Android MySQL Java SQL Content Provider

Education

Degrees, certifications, and relevant coursework

Sapientia EMTE

Bachelor's degree, Computing

2010 - 2014

Studied computing, including programming methods, electronics, and computer engineering, with specific languages such as C, C++, Java, and web technologies.