Available to hire
I’m Ivan Brajković, a frontend engineer with nearly a decade of experience building scalable, user-centric web and mobile solutions. I excel at bridging design and development to deliver seamless, maintainable experiences that grow with product needs.
I love mentoring teams, designing efficient architectures, and optimizing workflows using modern frontend practices. I’m passionate about staying at the forefront of emerging tech, and I aim to lead projects that blend great UX with AI-enhanced capabilities.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Language
English
Fluent
Work Experience
Principal Lead Frontend Engineer at Valcon
June 1, 2024 - PresentArchitected a scalable GOV.UK citizen research system, reducing processing time by 60%. Led a distributed frontend team, implemented agile best practices and robust API integration, and increased user engagement by 35% through domain-specific requirement refinement.
Lead Frontend Engineer at ROKO Lab
June 1, 2024 - September 6, 2025Managed a six-engineer squad that deployed React (web), React Native (mobile), and Node (backend). Delivered a wine cellar climate control MVP in one month, resolving 100+ tickets. Migrated backend from Firebase to AWS, reducing downtime by 20% and increasing scalability.
Senior Frontend Engineer (Consultant) at byBrick
December 1, 2023 - September 6, 2025Boosted app performance by 20% by upgrading React Native and resolved bottlenecks. Coordinated with backend teams to enable seamless system migrations and integrate APIs.
Senior Frontend Engineer at Bornfight
December 1, 2023 - September 6, 2025Scaled Elevien’s platform to 10,000+ users and reduced Firebase latency by 30%. Resolved 1,000+ issues, significantly optimizing performance and user experience.
Senior Frontend Developer at Epti Factory
January 1, 2023 - September 6, 2025Immomer team — Led frontend work, established coding best practices, improved team efficiency and product quality; mentored junior developers and delivered MVP under tight deadlines.
Senior Frontend Developer at Epti Factory
January 1, 2022 - September 6, 2025Space Gaming team — Migrated Flutter app to React Native; achieved 40% performance improvement. Integrated social login and payment options, boosting signups and sales.
Intermediate Frontend Developer at Epti Factory
January 1, 2021 - September 6, 2025Cang team — Refactored 70% of the codebase to React 16; improved performance and maintainability. Cleared 90% of backlog and automated repetitive tasks.
Software Developer at Hrvatski Telekom
January 1, 2020 - September 6, 2025Enhanced and maintained operational software supporting the support team. Built a browser plugin saving 300 hours monthly and developed proactive xDSL maintenance-ticket generation to prevent outages.
Software Developer at Freelancing
January 1, 2016 - September 6, 2025Delivered projects across Next.js, React, and .NET; built RFID data collection software and time-tracking systems for various clients.
Principal Lead Frontend Engineer at Valcon
June 1, 2024 - PresentArchitected a scalable GOV.UK citizen research system, reducing processing time by 60%. Led a distributed frontend team, implementing agile best practices and robust API integration. Increased user engagement by 35% through collaborative domain-specific requirement refinement.
Lead Frontend Engineer at ROKO Lab
June 1, 2024 - September 6, 2025Managed a six-engineer squad that deployed React (web), React Native (mobile), and Node (backend). Delivered a wine cellar climate control MVP in one month, resolving 100+ tickets. Migrated backend from Firebase to AWS, reducing downtime by 20% and increased scalability.
Senior Frontend Engineer (Consultant) at byBrick
December 1, 2023 - September 6, 2025Boosted app performance by 20% by upgrading React Native and resolved bottlenecks. Coordinated with backend teams to enable seamless system migrations and API integrations.
Senior Frontend Engineer at Bornfight
December 1, 2023 - September 6, 2025Scaled Elevien’s platform to 10,000+ users and reduced Firebase latency by 30%. Resolved 1,000+ issues, significantly optimizing performance and user experience.
Senior Frontend Developer at Epti Factory
December 1, 2023 - September 6, 2025Established coding best practices, improving team efficiency and product quality. Mentored junior developers and delivered the MVP under tight deadlines.
Senior Frontend Developer at Epti Factory
December 1, 2022 - September 6, 2025Migrated from Flutter to React Native and achieved a 40% performance improvement. Increased sales by 20% via Swish & Swedish Bank ID integrations. Implemented social login, raising sign-ups by 15%.
Intermediate Frontend Developer at Epti Factory
December 1, 2021 - September 6, 2025Refactored 70% of the codebase to React 16, improving performance and maintainability. Cleared 90% of backlog tickets and streamlined workflows by automating repetitive tasks.
Software Developer at Hrvatski Telekom
December 1, 2020 - September 6, 2025Enhanced and maintained operational software systems critical to the support team's functions. Created a browser plugin saving the support team 300 hours monthly and developed proactive software for xDSL infrastructure to anticipate issues by generating maintenance tickets before fallout.
Software Developer (Freelancing) at Various projects
December 1, 2016 - September 6, 2025Developed a range of solutions across platforms, including the Pazin City Museum’s Next.js site, commercial React sites, desktop apps with .NET, RFID/data collection software for embedded devices, and employee time-tracking systems.
Principal Lead Frontend Engineer at Valcon
June 1, 2024 - PresentArchitected a scalable GOV.UK citizen research system, reducing processing time by 60%. Led a distributed frontend team, implementing agile best practices and robust API integration. Increased user engagement by 35% through collaborative domain-specific requirement refinement.
Lead Frontend Engineer at ROKO Lab
June 1, 2024 - September 6, 2025Managed a six-engineer squad deploying React (web), React Native (mobile), and Node (backend). Delivered a wine cellar climate control MVP in one month, resolving 100+ tickets. Migrated backend from Firebase to AWS, reducing downtime by 20% and increasing scalability.
Senior Frontend Engineer (Consultant) at byBrick
December 1, 2023 - September 6, 2025Boosted app performance by 20% by upgrading React Native and resolved bottlenecks. Coordinated with backend teams to enable seamless system migrations and integrate APIs.
Senior Frontend Engineer at Bornfight
December 1, 2023 - September 6, 2025Scaled Elevien’s platform to 10,000+ users and reduced Firebase latency by 30%. Resolved 1,000+ issues, significantly optimizing performance and user experience.
Senior Frontend Developer at Epti Factory (Immomer team)
January 1, 2023 - September 6, 2025Established coding best practices, improving team efficiency and product quality. Mentored junior developers and delivered the MVP under tight deadlines.
Senior Frontend Developer at Epti Factory
January 1, 2022 - September 6, 2025Space Gaming team: Migrated a Flutter app to React Native and achieved a 40% performance improvement; Increased sales via Swish & Swedish Bank ID integrations; Implemented social login, raising user sign-ups by 15%.
Intermediate Frontend Developer at Epti Factory
January 1, 2021 - September 6, 2025Refactored 70% of the codebase to React 16, improving performance and maintainability. Cleared 90% of backlog tickets and streamlined workflows by automating repetitive tasks.
Software Developer at Hrvatski Telekom
January 1, 2020 - September 6, 2025Enhanced and maintained operational software for the support teams. Created a browser plugin saving the support team 300 hours monthly; developed proactive software for xDSL infrastructure to generate maintenance tickets before issues arise.
Software Developer at Freelancing
January 1, 2016 - September 6, 2025Developed a range of solutions across platforms, including Next.js site for Pazin City Museum, React-based commercial sites, desktop apps in .NET, RFID applications, data collection software, and employee time-tracking systems.
Education
B.Sc. Computer Science at Faculty of Informatics, University of Juraj Dobrila, Pula
January 11, 2030 - September 6, 2025B.Sc. Computer Science at University of Juraj Dobrila, Pula
January 11, 2030 - September 6, 2025B.Sc. Computer Science at Faculty of Informatics, University of Juraj Dobrila, Pula
January 11, 2030 - September 6, 2025Qualifications
Industry Experience
Software & Internet, Government, Professional Services, Media & Entertainment, Education
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
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