Senior Frontend Engineer – React, JavaScript

Justera Group

. Design, develop, and maintain application interfaces using React and JavaScript .

Posted 10/9/2026full-timeStockholm • SwedenSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in Frontend Development with a focus on React and JavaScript, ensuring compliance with quality standards and effective API integrations. Strong analytical and problem-solving abilities support independent task ownership and collaboration with cross-functional teams.

Highest-signal resume keywords

Frontend DevelopmentReactJavaScriptAPI IntegrationProblem-Solving

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Frontend DevelopmentReactJavaScriptPythonAPI IntegrationApplication Interface DevelopmentTestingDebuggingContinuous ImprovementRisk Identification

Soft Skills

Analytical SkillsProblem-SolvingCommunicationCollaborationOwnership

Industry Keywords

Application InterfacesScalable SolutionsQuality StandardsTechnical RequirementsBusiness RequirementsKnowledge SharingProfessional DevelopmentStakeholder EngagementIndependent WorkTeam Environment

Tech Stack

Tools & technologies

JavaScriptPythonReact

About the role

Key responsibilities & impact

Design, develop, and maintain application interfaces using React and JavaScript
Translate business and technical requirements into scalable, maintainable frontend solutions
Ensure interfaces comply with established guidelines, frameworks, and quality standards
Work with APIs and integrations to support seamless communication between systems
Collaborate with product owners, project managers, test leads, solution architects, and development teams
Troubleshoot technical issues, investigate defects, and implement effective solutions
Contribute to testing, debugging, and continuous improvement of application quality
Identify risks, technical challenges, and unclear requirements, raising them proactively with stakeholders
Work independently while ensuring close collaboration between business and IT
Contribute to team environment, knowledge sharing, and professional development

Requirements

What you’ll need

Strong experience in frontend development, particularly with React and JavaScript
Good knowledge of Python and its application in software development
Experience working with APIs and system integrations
Ability to develop application interfaces based on functional and non-functional requirements
Strong analytical and problem-solving skills
Experience working independently and taking ownership of development tasks
Excellent communication and collaboration skills
Professional proficiency in Swedish

Benefits

Comp & perks

Competitive compensation and comprehensive benefits package
Supportive culture fostering continuous learning, growth, and professional development
Flexible hybrid working model
25 days of annual leave
Annual wellness allowance of 3,500 SEK
Wellness initiatives and mental health support
Meaningful in-person collaboration and flexible work options