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Frontend Engineer with 6 years of experience designing and building responsive, user-centric web applications across product and platform teams in both SaaS and agency settings. Expertise in React, Ember, JavaScript, and CSS, paired with strong UI instincts, problem-solving skills, and effective communication. Driven to create elegant solutions that meaningfully enhance user experiences. Looking to join a team that prioritizes autonomy, ownership, and thoughtful engineering, where developers are trusted to make impact and grow.…Frontend Engineer with 6 years of experience designing and building responsive, user-centric web applications across product and platform teams in both SaaS and agency settings. Expertise in React, Ember, JavaScript, and CSS, paired with strong UI instincts, problem-solving skills, and effective communication. Driven to create elegant solutions that meaningfully enhance user experiences. Looking to join a team that prioritizes autonomy, ownership, and thoughtful engineering, where developers are trusted to make impact and grow.

Karlo Šeler

Front-End Developer, Web Developer, Developer, +2

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Frontend Engineer with 6 years of experience designing and building responsive, user-centric web applications across product and platform teams in both SaaS and agency settings. Expertise in React, Ember, JavaScript, and CSS, paired with strong UI instincts, problem-solving skills, and effective communication. Driven to create elegant solutions that meaningfully enhance user experiences. Looking to join a team that prioritizes autonomy, ownership, and thoughtful engineering, where developers are trusted to make impact and grow.…Frontend Engineer with 6 years of experience designing and building responsive, user-centric web applications across product and platform teams in both SaaS and agency settings. Expertise in React, Ember, JavaScript, and CSS, paired with strong UI instincts, problem-solving skills, and effective communication. Driven to create elegant solutions that meaningfully enhance user experiences. Looking to join a team that prioritizes autonomy, ownership, and thoughtful engineering, where developers are trusted to make impact and grow.

Available to hire

Frontend Engineer with 6 years of experience designing and building responsive, user-centric web applications across product and platform teams in both SaaS and agency settings. Expertise in React, Ember, JavaScript, and CSS, paired with strong UI instincts, problem-solving skills, and effective communication.
Driven to create elegant solutions that meaningfully enhance user experiences.

Looking to join a team that prioritizes autonomy, ownership, and thoughtful engineering, where developers are trusted to make impact and grow.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Beginner

Language

English

Advanced

Work Experience

Frontend Engineer at Productive.io

January 23, 2023 - December 31, 2025

• Owned and delivered key Ember.js features that enhanced product capabilities and user experience. • Partnered with product stakeholders to implement features central to a new upselling strategy supporting business growth initiatives. • Served on the platform team, modernizing legacy Ember codebases and resolving technical debt to enable adoption of Ember Embroider. • Developed foundational UI components for a new design system, establishing reusable patterns used across multiple teams. • Took ownership of high-priority user and stakeholder escalations, rapidly shipping time-sensitive features while maintaining code quality and platform stability.

Software Engineer at EPAM Systems

May 5, 2022 - December 30, 2022

• Worked cross-functionally within a BAU team on the Primark project, helping deliver the end-to-end Click & Collect customer experience. • Contributed code and improvements to the Oracle Cerner Terra UI open-source web framework. • Identified and fixed defects in legacy systems to unblock feature development and improve system reliability. • Supported and executed production deployments, ensuring new functionality went live safely and without service interruptions. • Maintained and expanded technical and user documentation, improving clarity around new workflows and processes.

UI Developer at CloudSense Ltd.

October 1, 2020 - April 29, 2022

• Led development of internal React-based UI libraries, including reusable form and data grid components adopted across multiple Salesforce-based applications. • Improved code reuse and maintainability by standardizing shared UI patterns, reducing duplicated frontend logic across products. • Established testing standards and documentation for internal UI libraries, improving reliability and easing long-term maintenance. • Collaborated on the design and development of an internal documentation application supporting the team’s UI design system. • Conducted onboarding, mentoring, and code reviews, supporting junior engineers and promoting platform best practices

Junior UI Developer at CloudSense Ltd.

January 1, 2020 - October 1, 2020

• Developed and optimized user interfaces across multiple Salesforce-based applications using shared UI components. • Debugged and resolved frontend issues to improve application performance, usability, and stability. • Contributed to the design and development of the team’s internal design system, implementing reusable UI components and patterns. • Collaborated closely with senior developers to adopt platform standards and improve consistency across products.

Junior Software Tester at CloudSense Ltd.

July 23, 2018 - December 31, 2019

• Executed manual quality assurance for Salesforce-based applications, developing a strong understanding of user workflows, edge cases, and system behavior. • Identified, documented, and tracked defects, partnering closely with developers to ensure timely resolution and high-quality releases. • Performed regression testing to validate new features and bug fixes, reinforcing application stability and reliability. • Collaborated with product and business stakeholders to translate requirements into clear test scenarios, strengthening alignment between user needs and implementation.