alosim is a global eSIM platform that enables travelers to purchase and activate mobile data plans instantly across 200+ countries. The product spans a high-performance marketing website, a complex backend powering plan discovery and activation, and mobile apps that deliver a seamless onboarding and eSIM installation experience.
I worked as a full-stack engineer alongside the original AffinityClick team, contributing across frontend, backend, performance, and product execution.
What i did:
- Built and optimized user-facing flows across the marketing and product experience
- Implemented responsive, conversion-focused UI for destination discovery, plan comparison, and checkout
- Improved page performance, load times, and SEO-critical sections
- Ensured consistent UX across landing pages, product flows, and support sections
- Worked on API-driven flows for plan selection, purchase, and activation
- Integrated third-party services for payments, eSIM provisioning, and customer support
- Helped maintain clean, scalable backend architecture to support global usage
- Collaborated closely on data handling, validation, and error-resilient workflows
- Supported app flows for eSIM installation, activation, and account management
- Ensured backend and frontend parity between web and mobile experiences
- Assisted with edge-case handling around device compatibility and onboarding