About the Company Kasagi Labo is acquiring anime IPs and building an AI-powered social platform that connects fans and creators more effectively than traditional methods, automating and enhancing interactions like fan engagement and content creation, and proving so innovative that it's fostering a global community and redefining anime fandom. We've raised one of the largest seed rounds in SEA totalling US$20M to build out our vision. The team is small because we can't hire great people as fast as the company is growing. About the Role We're looking for a mid-to-senior level Back-End Engineer to build the infrastructure powering the next generation of anime experiences. You'll work closely with Product, Front-End, and DevOps teams to architect, implement, and scale reliable services for millions of fans worldwide. This role is ideal for someone who thrives in a fast-paced, product-led environment and wants to make a meaningful impact on both technology and culture. Responsibilities Build scalable APIs, backend services, and data models that support both user-facing features and internal operations. Work closely with product managers, designers, and frontend engineers to ship features that solve real user problems. Monitor, troubleshoot, and enhance the performance and reliability of critical services, ensuring high availability at scale. Implement backend architectures with a strong focus on security, fault tolerance, and future scalability. Lead the full development lifecycle-from technical planning and design to deployment, observability, and maintenance. Participate in code reviews, mentor junior engineers, and help shape best practices to elevate the engineering bar across the team. Requirements 3-5 years (5-10 years for senior) of back-end development experience Strong proficiency in one or more languages (e.g. Node.js, Python, Go) Experience with RESTful API design and database systems (e.g. PostgreSQL, Firebase, MongoDB) Familiarity with cloud infrastructure (e.g. GCP, AWS) and containerisation (e.g. Docker, Kubernetes) Knowledge of authentication protocols and web security best practices Comfortable working in agile, startup environments Ability to work in high-tempo, ambiguous startup environment Adaptability, resilience, and a willingness to embrace change. Bonus: Experience with consumer apps, especially media/social/fan platforms Bonus: Interest in anime or pop culture What We Offer Competitive base salary (we pay above market rate) Unlimited PTO Flexible Hybrid setup Annual offsites and monthly team activities Opportunity to build something fans actually care about Pay range and compensation package We&aposre ready to invest more for exceptional talent. Kasagi Labo is building the future of anime fandom. If you&aposre excited to work on meaningful tech in a high-ownership culture, we'd love to hear from you. Show more Show less