Software Development Engineer II (Frontend)

Job DescriptionEvery SIXT booking ends here. The Orange Checkout team owns the final, most critical step of the customer journey — the moment a browsing session turns into revenue. You'll be working on a product that's constantly evolving — one week you're optimizing conversion on a new payment flow, the next you're rebuilding a step to support a market launch. If you like solving problems where the ground keeps shifting under you (in a good way), this is that kind of team. YOUR ROLE AT SIXT You turn ambiguous product problems into clear, testable specifications that agents can execute againstYou run end-to-end agent workflows to build features, then review the resulting change as a whole: correctness, consistency with our architecture, and drift, rather than line by lineYou own what your agents ship to production: debug to root cause, and encode prevention (a test, a rule, an agent constraint) so the same issue is caught automatically next timeYou ship small-to-medium features end-to-end with minimal guidance, including deploymentYou build production-quality, reusable React components and integrate reliably with backend and third-party systemsYou challenge unclear requirements, weigh business and user trade-offs, and communicate decisions and risks clearly to product and engineering partnersYOUR SKILLS MATTER You hold a Bachelor's or Master's degree in Computer Science or a related fieldYou bring 3–6 years of frontend software engineering experienceYou have strong React.js, Redux and framework-based JavaScript skills: component contracts, state management, and rendering/performance behavior. This depth is non-negotiable, as it's what lets you review and trust agent outputYou are proficient with HTML, CSS, JSON, build tools, Git, and confident debugging in Chrome DevToolsYou actively use AI coding assistants such as Claude or Cursor to accelerate your development, while applying sound engineering judgment to validate, review, and own the outputYou work well with product, design, and engineering stakeholdersWHAT WE OFFER Grow Further, Go Further Advance your skills and unlock your potential with our Education Assistance ProgramBalance Your Career Benefit from a hybrid work environment complemented by flexible working hoursFuel Your Day Great work deserves great fuel. Enjoy meal benefits that keep you energized and ready to bring your A-gameYour Wellness Matters We're committed to your well-being through comprehensive insurance, wellness programs, health checkups, and fitness benefitsRecognition That Counts We create a culture of appreciation, rewarding your impact through referral incentives and loyalty perks as you advance with usGrowing Families, Growing Joy As your family grows, we're here to celebrate with a special newborn gift for your little one