Open to opportunities

Roman Saito

@romansaito

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Senior Full-Stack Engineer with 10+ years of experience.

Czechia

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What I'm looking for

I am looking for a role that fosters innovation, encourages collaboration, and offers opportunities for professional growth.

I am a Senior Full-Stack Engineer with over a decade of experience in delivering high-performance web applications across various industries, including fintech, healthcare, and real estate. My expertise lies in architecting scalable systems and optimizing backend performance, achieving up to a 40% improvement in efficiency. I thrive in Agile environments, leading cross-functional teams to create resilient, user-focused digital platforms.

Throughout my career, I have successfully led the development of enterprise-grade applications, significantly reducing client-side load times and enhancing user engagement. My passion for clean architecture and test automation drives me to build robust solutions that not only meet but exceed client expectations. I am committed to continuous learning and mentorship, fostering collaboration and innovation within my teams.

Experience

Work history, roles, and key accomplishments

Current

Senior Full-Stack Engineer

Current

Infinum

Oct 2020 - Present (4 years 7 months)

Led full-stack development for enterprise-grade fintech and healthcare applications using Next.js, Node.js, and PostgreSQL, helping reduce client-side load times by 45%. Redesigned a complex PostgreSQL schema, applying indexing, partitioning, and trigger-based automation, which improved API response times by 40%.

Next.js Node PostgreSQL Tailwind Ruby on Rails Spring Boot Redis Docker GitHub Actions Jest RSpec

Mid-level Front-End Developer

Ackee

Apr 2015 - Nov 2020 (5 years 7 months)

Led the development of an investor dashboard using React.js, optimizing render logic and bundle size to improve initial page load time by 42%. Architected and delivered a dynamic component system using React, TypeScript, and Tailwind, which increased developer efficiency by 38%.

React TypeScript MongoDB HTML5 CSS3 Git JavaScript

Junior Front-End Developer

Mobilunity

Aug 2013 - Mar 2015 (1 year 7 months)

Contributed to building customer portals using React.js, directly improving UX and leading to a 40% increase in user engagement. Collaborated with senior engineers to develop over 30+ modular React components, which helped standardize the UI and reduce development time.

React JavaScript HTML5 CSS3 Git Agile

Education

Degrees, certifications, and relevant coursework

Brno University of Technology

B.S. in Computer Science, Computer Science

2010 - 2013

Grade: 3.8 / 4.0

Completed a Bachelor of Science degree focusing on Computer Science. Studied core concepts including programming, data structures, algorithms, and software engineering principles.