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I'm Maria Onaca, a Senior Frontend Engineer with 9+ years of experience building scalable web applications across AdTech, FinTech, Recruitment Tech, IoT, and EdTech. I design, implement, and ship features with a strong focus on performance, maintainability, and measurable business impact. I enjoy leading frontend initiatives from architecture through production, collaborating with product, design, and data teams, and mentoring teammates to raise engineering standards. I'm passionate about delivering robust user experiences and driving innovation on large-scale platforms.…I'm Maria Onaca, a Senior Frontend Engineer with 9+ years of experience building scalable web applications across AdTech, FinTech, Recruitment Tech, IoT, and EdTech. I design, implement, and ship features with a strong focus on performance, maintainability, and measurable business impact. I enjoy leading frontend initiatives from architecture through production, collaborating with product, design, and data teams, and mentoring teammates to raise engineering standards. I'm passionate about delivering robust user experiences and driving innovation on large-scale platforms.

Maria Onaca

Front-End Developer, Full Stack Developer, Web Developer, +1

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I'm Maria Onaca, a Senior Frontend Engineer with 9+ years of experience building scalable web applications across AdTech, FinTech, Recruitment Tech, IoT, and EdTech. I design, implement, and ship features with a strong focus on performance, maintainability, and measurable business impact. I enjoy leading frontend initiatives from architecture through production, collaborating with product, design, and data teams, and mentoring teammates to raise engineering standards. I'm passionate about delivering robust user experiences and driving innovation on large-scale platforms.…I'm Maria Onaca, a Senior Frontend Engineer with 9+ years of experience building scalable web applications across AdTech, FinTech, Recruitment Tech, IoT, and EdTech. I design, implement, and ship features with a strong focus on performance, maintainability, and measurable business impact. I enjoy leading frontend initiatives from architecture through production, collaborating with product, design, and data teams, and mentoring teammates to raise engineering standards. I'm passionate about delivering robust user experiences and driving innovation on large-scale platforms.

Available to hire

I’m Maria Onaca, a Senior Frontend Engineer with 9+ years of experience building scalable web applications across AdTech, FinTech, Recruitment Tech, IoT, and EdTech. I design, implement, and ship features with a strong focus on performance, maintainability, and measurable business impact.

I enjoy leading frontend initiatives from architecture through production, collaborating with product, design, and data teams, and mentoring teammates to raise engineering standards. I’m passionate about delivering robust user experiences and driving innovation on large-scale platforms.

Skills

CSS

JavaScript

TypeScript

Experience Level

CSS

Expert

JavaScript

Expert

TypeScript

Expert

Work Experience

Senior Frontend Engineer at CONNATIX

July 1, 2021 - Present

Owned the end-to-end delivery of user-facing features for a large-scale video technology and monetization platform, from requirements analysis and technical breakdown to implementation, testing, release, and post-release support. Built and enhanced core video player capabilities across browsers and devices, improving user experience and platform reliability. Contributed to products serving thousands of publishers and advertisers and delivering billions of monthly video plays and ad impressions. Drove performance, scalability, and maintainability initiatives, enabling faster feature delivery and reducing technical debt. Collaborated with product, business, and engineering teams to deliver monetization-focused solutions and customer value. Contributed to architectural decisions and long-term frontend strategy for a large-scale platform. Led code reviews and participated in technical interviews, helping maintain engineering standards and supporting team growth. Mentored junior engineers a

Frontend Engineer at AROBS

May 1, 2018 - July 1, 2021

Developed frontend solutions for one of Switzerland's largest recruitment platforms using React and Next.js. Built and optimized data-intensive dashboards and reporting tools used by recruiters and employers to analyze candidate pipelines, job posting performance, and recruitment metrics. Contributed to the onboarding experience of a leading European digital banking platform used by more than 10 million customers across multiple countries. Architected and developed an indoor positioning platform from the ground up using BLE beacon technologies. Developed digital learning platforms that transformed traditional school textbooks into interactive educational experiences.

Full Stack Engineer (React & Java) at HPE

December 1, 2016 - May 1, 2018

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

Software Developer at NETMATCH

January 1, 2015 - December 1, 2016

Started as an intern and progressed into a junior developer role. Gained hands-on experience in .NET, JavaScript, HTML, CSS, Agile delivery, OutSystems, and rapid application development tools.