Open to opportunities

Maria Onaca

@mariaonaca

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Senior Frontend Engineer with 9+ years building scalable, performance-focused web apps.

Romania

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What I'm looking for

I’m looking for a Senior/Frontend role where I can own end-to-end delivery, lead frontend architecture, and drive performance and maintainability. I want to work on large-scale products and mentor engineers while improving measurable outcomes.

I’m a Senior Frontend Engineer with 9+ years of experience designing and delivering scalable web applications across AdTech, FinTech, Recruitment Tech, IoT, and EdTech. I’ve built products used by millions of users, focusing on performance, maintainability, and business growth.

Most recently at CONNATIX, I owned user-facing delivery end-to-end for a large-scale video technology and monetization platform. I built and enhanced core video player capabilities across browsers and devices, contributing to performance, scalability, and long-term frontend strategy.

Previously, at AROBS I developed frontend solutions for a major Swiss recruitment platform using React and Next.js, and I also worked across digital banking onboarding and interactive learning experiences. I enjoy leading complex frontend initiatives—from architecture and implementation to production support—while mentoring engineers and strengthening engineering quality.

Experience

Work history, roles, and key accomplishments

Current

Senior Frontend Engineer

Current

Connatix

Jul 2021 - Present (5 years)

Owned delivery of user-facing frontend features end-to-end for a large-scale video technology and monetization platform. Built core video player capabilities across browsers and devices and led performance, scalability, and maintainability initiatives.

Video Player Development Performance Optimization Scalability Maintain Frontend Architecture Mentoring Technical Interviews

Frontend Engineer

AROBS

May 2018 - Jul 2021 (3 years 2 months)

Developed frontend solutions for a Swiss recruitment platform using React and Next.js. Built dashboards and reporting tools for recruitment analytics and worked on additional product experiences including an indoor positioning platform using BLE beacons and interactive digital learning platforms.

React Next.js Dashboard Development Reporting & Analytics Recruitment Analytics Onboarding Experience Digital Learning Platforms

Full Stack Engineer

HPE

Dec 2016 - May 2018 (1 year 5 months)

Developed automation solutions for enterprise server infrastructure. Built Java backend services and React applications for infrastructure management.

Java React Backend Services Automation Infrastructure Management

Software Developer

Netmatch

Jan 2015 - Dec 2016 (1 year 11 months)

Started as an intern and progressed into a junior developer role. Gained experience building with .NET, JavaScript, HTML, CSS, and Agile delivery, including work with OutSystems.

.NET JavaScript HTML CSS Agile Delivery OutSystems