Juraj Slavíček
Lead Software Engineer
Hi, I’m Juraj, a software engineer with over 10 years of experience in building complex web applications, particularly in startups poised for substantial growth.
From concept to completion, I have led teams in delivering projects that respond to actual business needs effectively. I'm all about taking startups to the next level technically, ensuring they're not just keeping up but setting the pace.
Core skills
Software Development
Lead Software Engineer with 10+ years in full-stack development, excelling in problem-solving, code quality, and agile practices.
Frontend engineering
Expert in frontend development, crafting scalable web and mobile apps with React, React Native and Next.js, focused on top-tier user experiences.
Backend engineering
Competent in backend engineering, experienced with Node.js, Django, and PostgreSQL, focusing on integrating front-end solutions and managing APIs.
Any fool can write code that a computer can understand. Good programmers write code that humans can understand.
- Martin Fowler
Experience
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7bridges
2022-NowLondon, UKLead Software Engineer
ReactGraphQLDjangoPythonTypeScript- Led technical efforts at 7Bridges, an AI-powered supply chain management innovator, enhancing customer experience and automation for clients like Philipp Plein and Huel.
- Led a significant refactoring and modernization of a complex JavaScript codebase, transitioning to TypeScript while maintaining ongoing production operations and shipping new features. Enhanced code maintainability, and reduced runtime errors. Increased TypeScript integration from 14% to 87%.
- Successfully introduced a 75% improvement in support time by introducing state-of-the-art engineering practices, which dramatically improved productivity and allowed for greater focus on core development tasks.
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Simplicity
2021-2022Bratislava, SlovakiaLead Frontend Engineer
ReactReact NativeExpoCypressNode.jsGraphQL- Contributed to Simplicity’s mission of transforming cities into AI-powered hubs by leading the development of web and mobile applications, enhancing the urban experience for over 50 million residents across 120 cities worldwide. I joined the team following a major capital raise and played a pivotal role in the company's rapid expansion from inception to operations in all major U.S. cities, including New York, Los Angeles, and Miami.
- Led a team of 5 front-end engineers in the greenfield development of multiple complex web applications for city officials and a native mobile app for residents on iOS and Android, establishing the entire front-end architecture.
- Utilized a tech stack comprising Next.js, React, React Native, Expo Cypress, Node.js, and GraphQL to build robust, maintainable, and highly scalable applications.
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Ciklum
2018-2021Bratislava, SlovakiaSenior Fullstack Engineer
ReactNext.jsTypeScriptGraphQLJavaSpring BootScalaDockerAzure- In Ciklum I was part of multiple high-profile software development projects across fashion, real estate, e-commerce, and financial sectors as both a senior and lead engineer, guiding architectural and technical direction for global platforms like Peek-Cloppenburg, Der Standard, and others.
- Designed and implemented modern frontend architectures and established robust testing frameworks, introducing CI/CD pipelines and code quality systems to ensure scalable and maintainable software solutions.
- Delivered high-performance software, both in greenfield projects and legacy rewrites, capable of handling tens of HTTP requests per second, demonstrating exceptional efficiency and scalability.
- Led and mentored a substantial number of full-stack developers across three distinct projects.
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ESET
2015-2018Bratislava, SlovakiaSoftware Engineer
TypeScriptJavaGWT (Google web toolkit)gRPC- In ESET a global leader in digital security, providing advanced antivirus and cybersecurity solutions I transitioned from a junior to a senior developer role, taking ownership of a handful of critical features that impacted millions of users.
- Introduced and integrated React into the existing Java codebase, modernizing the application architecture and improving maintainability while also enabling a transition from on-premise to cloud.
- Participated in creating a company-wide component library, standardizing UI components, and promoting reusability across different projects.
Testimonials
Available for selected opportunities
Have an exciting project you need help with? Send me an email,book a call via Calendly or shoot me a message on LinkedIn!
This website was made with love on spring 2024 using Astro.build 💞. Some design elements were inspired by the creative work of Tamal San.
Juraj is technically strong, does a good job understanding business goals, and really helped reset and establish good front end engineering architecture and processes for us, as well as executing on a daily basis on a wide range of features and experiences. He understands when to be pragmatic but also has a clear idea of what good looks like. I'm very glad I was able to work with him, and see him as a strong team contributor.
— Amy Heineike
VP of Engineering @ 7bridges
I worked with Juraj for a few months, and I will remember those days for a long time. Juraj is a very skilled and capable programmer, excelling in many areas. He delivers work extremely fast without compromising quality—in fact, quite the opposite. He always looks for the best solution to any problem, using his technical expertise and thoughtfully challenging business and product ideas. Juraj is great at leading and teaching junior colleagues and always supports his team when needed. The only downside is that our cooperation was too short.
— Robert Čapla
Head Of Product @ Simplicity
I worked with Juraj on several streams. Juraj was not only a very senior developer but he proved excellent leadership skills on all the projects. He was the main counterpart for the customer converting customer's ideas into architecture and design. There are some other benefits working with Juraj though. He is a guy you enjoy lot of fun with and therefor he was also naturally helping building the right team spirit across the Bratislava branch and whole my department of 100+ devs at that time. If you want a guy who will make things done and improve your team spirit, Juraj is the one!
— Jan Černý
Web & Mobile Director @ Ciklum