Senior Frontend Engineer

Appgate; Göteborgs kommun; On-site; SEK 600,000 - 800,000; Full time

Job summary

AppGate in Gothenburg, Sweden, is seeking a talented Software Engineer to strengthen our frontend team. You will design, develop, and maintain high-quality frontend applications using React and TypeScript, collaborating with product managers, designers, and backend engineers.

You will contribute to the frontend architecture, write clean, testable code, participate in reviews, and help improve performance, accessibility, and user experience while staying current with modern tools and AI-assisted

Qualifications

• Professional experience developing web applications with React and TypeScript.
• Solid knowledge of HTML, CSS and responsive design.
• Experience with Git and collaborative code reviews.
• Ability to write clean, maintainable, and reusable code.
• Comfortable working in an Agile environment.
• Proficient in spoken and written English.

Responsibilities

• Design, develop, and maintain frontend applications using React and TypeScript.
• Collaborate with product managers, designers, and backend engineers to deliver user-focused features.
• Contribute to the architecture and evolution of frontend platform and component library.
• Write clean, maintainable, and well-tested code following modern engineering practices.
• Participate in code reviews and provide constructive feedback to teammates.
• Troubleshoot, debug, and improve application performance and reliability.
• Contribute to technical discussions, estimation, planning, and sprint activities.
• Continuously improve development workflows, tooling, and engineering practices.
• Stay up to date with modern frontend technologies and share knowledge with the team.

Skills

React

TypeScript

HTML/CSS

Git

Agile

English proficiency

Tools

Playwright

React Testing Library

Vitest

Storybook

Next.js

Redux

Job description

AppGate is looking for a talented Software Engineer to join our team in Gothenburg, Sweden. We work creatively in a supportive yet challenging environment. Our teams are technical owners of the components they produce, creating an inspiring, innovative, and collaborative culture. Within AppGate, you will be surrounded by a team of ethical hackers, security experts, machine learning experts and software engineers.

Responsibilities

• Design, develop, and maintain high-quality frontend applications using React and TypeScript.
• Collaborate closely with product managers, designers, and backend engineers to deliver user-focused features.
• Contribute to the architecture and evolution of our frontend platform and component library.
• Write clean, maintainable, and well-tested code following modern engineering practices.
• Participate in code reviews and provide constructive feedback to teammates.
• Troubleshoot, debug, and improve application performance and reliability.
• Contribute to technical discussions, estimation, planning, and sprint activities.
• Continuously improve development workflows, tooling, and engineering practices.
• Stay up to date with modern frontend technologies and share knowledge with the team.

Requirements

Must Have

• Professional experience developing web applications with React and TypeScript.
• Solid knowledge of HTML, CSS and responsive design.
• Experience working with Git and participating in collaborative code reviews.
• Ability to write clean, maintainable, and reusable code.
• Comfortable working in an Agile environment.
• Proficient in spoken and written English.

Nice to Have

• Experience mentoring other engineers.
• Experience with Next.js.
• Experience with Redux.
• Experience with test library and framework like Playwright, React Testing Library and Vitest.
• Experience building or maintaining a component library (with Storybook).
• Strong focus on performance, accessibility, and user experience.
• Experience working with AI-assisted development tools and agentic AI workflows.

Bonus Skills

• Knowledge of frontend security best practices.
• Experience with performance monitoring and optimization.
• Experience with Jira, Confluence, and the Atlassian ecosystem.
• Experience leading technical initiatives or owning frontend architecture.

If you are a passionate frontend developer eager to work in a collaborative and dynamic environment, we would love to hear from you. Apply now to join our team and contribute to the success of AppGate SDP!