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June 4, 2026

Senior Front-End Engineer (ExtJS)

Senior • Remote

Krakow, Poland

Svitla Systems Inc. is looking for a Senior Front-End Engineer (ExtJS) for a full-time position (40 hours per week) in Poland. Our client is a leading global provider that involves gathering information and reporting to enhance the environmental and social impacts on the business.  

Requirements

  • Strong knowledge of Ext JS (version 7 or at least 5 years of experience).

  • Understanding of web development using an IDE (ideally PhpStorm).

  • Familiarity with current trends in software development.

  • Knowledge of software design patterns and best practices.

Nice to have

  • Experience optimizing applications for performance.

  • Experience in SaaS product development.

  • Understanding of Scrum/Agile methodologies.

Responsibilities

  • Take part in Scrum/Agile-based development of a SaaS Application.

  • Provide technical design, build, and unit testing for new features.

  • Conduct analysis and refactoring of existing source code.

  • Analyze requirements, suggest concepts, and assess development efforts.

  • Establish yourself as a Subject Matter Expert.

  • Mentor other engineers.

We offer

  • US and EU projects based on advanced technologies.

  • Competitive compensation based on skills and experience.

  • Regular performance appraisals to support your growth.

  • Flexibility in workspace, either remote or our welcoming office.

  • Bonuses for article writing, public talks, and other activities.

  • Generous time off, including vacation, national holidays, sick leaves, and family days.

  • Personalized learning programs tailored to your interests and skill development.

  • Free tech webinars and meetups organized by Svitla.

  • Regular corporate online activities.

  • Awesome team and a friendly, supportive community!