Hybrid Front-End Developer, Payment Experience

at Trustly

• Job title: Front-End Developer, Payment Experience
• Job type: Full Time
• Experience level: Mid level, Senior
• Salary: Not specified
• Degree requirement: Bachelor's Degree
• Tech skills: Android, iOS, Java, JavaScript, Kubernetes, React, TypeScript
• Location requirements: Hybrid, Stockholm, Sweden

About the role

• Front-End Developer improving the Checkout experience at Trustly, a leader in Open Banking Payments. Collaborate with teams to create high-performance web applications.

Responsibilities

• Be a part of our payment team and build the UI for the next-generation payment platform using **React**.
• Learn new methods and techniques in a team where **pair and mob programming** is part of the daily methodology.
• Work closely with other developers, UX Designers, and product owners on a daily basis.
• Maintain a high focus on writing clean, testable code.
• Analyze large volumes of data to find possible problems and propose performance improvements.
• Identify performance issues and propose solutions.
• Support new developers on the company and train them on the development process, patterns, and features.
• Participate in functional meetings with non-engineering teams, offering knowledge of all front-end features and skills to propose solutions.
• Be able to participate in incident meetings and create an action plan.
• Drive technical initiatives from ideation to completion, influencing how your team collaborates and ships code.
• Design, develop, test, deploy, maintain, and improve software; take full responsibility for the lifecycle of your code.

Requirements

• Expert understanding and deep practical knowledge of state management, API integration, and frontend testing frameworks, ensuring robust and maintainable code
• Highly skilled in JavaScript/TypeScript, including ES6+ features, asynchronous operations, and contemporary web development methodologies.
• Significant practical experience with current web frameworks such as React.
• Demonstrated success in building fast, high-performance web applications, with a focus on speed optimisation, adherence to accessibility standards (WCAG), and reliable cross-browser functionality.
• Familiarity with CI/CD (Continuous Integration/Continuous Delivery) practices.
• Familiar with using AI-tools in software development
• Ability to navigate across the entire technology stack, not limited to the frontend scope.
• Strong communication skills and fluency in English.
• Experience in mobile app development, specifically covering both iOS and Android platforms.
• Knowledge of infrastructure orchestration using Kubernetes and Istio for traffic flow management.
• Proficient in application monitoring, leveraging tools like Datadog for system reliability.
• Experience of Java for building scalable and maintainable backend services.
• Expertise in end-to-end testing methodologies, utilising modern frameworks like Playwright.
• Familiarity with deployment control, specifically using feature flag tools like Config Cat.
• Interest in User Experience (UX), ensuring technical deliverables align with design principles.
• Proven ability to manage merchant integrations and provide direct technical customer support.
• Responsible and proactive in driving things end-to-end.
• A collaborative spirit, as you will be one of a small number of Front-end developers—it is important that we do not work in a silo.
• A willingness to act as a cross-team bridge between different teams and systems.

Benefits

• 20 to 30 days of holiday to support a healthy work-life balance
• Monthly team outing allowance to enjoy social events with your colleagues
• Parental leave top-up additional support for new parents
• Daily breakfast and on-site perks to make your workday smoother
• Well being support our health allowance covers gym memberships, massages, and much more to help you feel your best
• PLUS additional benefits designed to enhance your work-life experience!