Marko Bilanović

Senior UX-focused Frontend Engineer

Salary / Daily rate

Novi Sad, Serbia

Freelance, open to permanent contract

Skills

ReactTypescriptNodeNextReduxData Visualization

About me

Intro

Senior UX-focused Frontend Engineer with 10+ years of experience designing and building complex, user-facing products. I specialize in translating ambiguous product and design requirements into clear, accessible, and scalable interaction systems, with a strong focus on reducing user friction and improving consistency. Experienced in leading design system evolution, shaping CMS-driven user journeys, and driving measurable improvements in usability, performance, and accessibility across large platforms.

Links

Work experience

Senior Frontend Engineer, Design Systems & Platform

Voy (formerly Manual)

Jan 2024 - Present

2 years 10 months

– Led frontend architecture for a company-wide website rebrand, enabling incremental migration from a legacy platform via complex A/B testing while driving design system alignment with designers to ensure consistent components, tokens, and interaction patterns across applications. – Re-architected CMS-driven user journeys by migrating from a legacy CMS to headless Sanity, enabling faster iteration and improved content-driven user journeys. – Improved perceived performance and SEO across CMS-driven pages by addressing load times, interaction delays, and rendering behavior, resulting in ~54% higher performance score, ~61% faster FCP, ~70% lower TBT, and over 50% JavaScript reduction. – Led adoption of AGENTS.md to standardize Al agent context across the team, improving developer workflows and reducing time required to build and iterate on features. – Actively share engineering learnings through internal talks on frontend architecture, developer experience, and Al-assisted workflows, including presenting a proof of concept for reducing brownfield tech debt using Al-driven nightly workers.

Senior Frontend Engineer

Nabis

Apr 2023 - Dec 2023

9 months

– Improved a customer-facing wholesale dashboard by simplifying key workflows and addressing usability issues, reducing customer support requests and improving day-to-day efficiency for users.

Front-End Engineer

Reichle & De-Massari AG

Jan 2018 - Apr 2023

5 years 4 months

– Progressed from junior developer to frontend lead within a small, highly skilled team, taking ownership of complex, user-facing systems. – Built and scaled a real-time data center management platform under strict performance constraints, balancing system complexity with clear, predictable user workflows. – Owned UX and architectural decisions for complex real-time workflows, balancing system constraints with clear mental models and predictable interaction patterns. – Planned and conducted usability testing with new users, introducing in-app guidance and workflow improvements that reduced time to complete core tasks by ~50% (from ~30 to ~15 minutes).

Junior Software Engineer

Schneider Electric DMS

Oct 2013 - Dec 2017

4 years 3 months

– Joined as a stipend student during studies and transitioned into a full-time engineering role.


Education

Faculty of Technical Sciences, University of Novi Sad

Master's degree, Electrical and Computer Engineering

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