Ahtisham S

Senior Software Engineer

Global Software Consulting • Vollzeit

Jan 2025 - Present • 1 yr 9 mos

Owned development of production web and mobile products across React, Next.js, React Native and Expo, taking features from architecture through release. Designed and maintained shared monorepo architecture with Turborepo across web, mobile and backend applications. Built backend services and serverless workflows using Node.js, NestJS, PostgreSQL, AWS Lambda and API Gateway. Integrated production payment flows including Stripe, Stripe Connect, Apple Pay, Google Pay and RevenueCat. Worked across authentication, API integrations, state management, performance optimization, testing, CI/CD and production debugging. Led frontend implementation and supported architectural decisions across multiple product areas, including code reviews and mentoring for junior engineers. Supported production releases across the App Store, Google Play, web and desktop platforms.

Senior Software Engineer

Fiverr • Freiberufler

Jan 2019 - Present • 7 yrs 9 mos

Working as an independent software engineer, I build production-ready mobile applications, web platforms, SaaS products, backend systems, and AI-powered solutions for startups and businesses worldwide. My primary expertise is React Native and Expo development for iOS and Android. I handle mobile architecture, responsive interfaces, API integrations, authentication, payments, subscriptions, push notifications, real-time features, performance optimization, testing, Expo EAS builds, and App Store and Google Play deployment. I also develop Next.js and React web applications, Node.js and NestJS APIs, PostgreSQL databases, admin dashboards, multi-tenant platforms, and AWS cloud infrastructure. My AI experience includes OpenAI, Claude, Gemini, RAG systems, chatbots, virtual assistants, and workflow automation. With 7+ years of professional experience, I manage the full development lifecycle—from product planning and architecture to deployment, communication, and long-term support.

Senior Software Engineer

Obenan • Vollzeit

Oct 2023 - Jan 2025 • 1 yr 3 mos

Led frontend engineering for core Obenan products, including the Dashboard, Landing Platform and OmniPulse. Built and maintained production SaaS interfaces using Next.js, React, TypeScript, Redux Toolkit, Tailwind CSS and Turborepo. Developed backend services and REST APIs with Node.js, Express.js and PostgreSQL for platform integrations and business workflows. Worked on AI-driven product features within a platform supporting 1,500+ locations across 43+ countries and integrations with 100+ platforms. Built responsive, SEO-focused web applications using Next.js SSR/SSG and reusable frontend architecture. Integrated Strapi CMS and multilingual functionality for dynamic content and internationalized products. Collaborated with product and backend teams to translate complex business requirements into production-ready features.