Simon K

Full Stack App Developer & No-Code Specialist

DevsAffinity Softwares / Freelance • Freiberufler

Jul 2025 - Present • 10 mos

Specialize in building scalable mobile and web apps using Flutter, Unity, and no-code platforms like Bubble.io, Adalo, Glide, WeWeb, and Thunkable. Handle full development lifecycle — UI/UX design, backend APIs, database architecture, third-party integrations (payments, ads, analytics), and App Store/Play Store publishing. Completed 500+ projects with focus on honest timelines, clean code, and post-launch support. Known for fixing broken MVPs, last-minute launch rescues, and turning rough ideas into production-ready apps. Core skills: Flutter, Firebase, REST APIs, SQLite, MongoDB, Unity SDK integrations, responsive design, and cross-platform deployment.

Full-Stack App Developer & Deployment Engineer

Fiverr • Freiberufler

Jul 2024 - Present • 1 yr 10 mos

DEPLOYMENT solutions for startups, SaaS brands, and e-commerce clients. Key responsibilities included: Building scalable BASE44 APP systems and integrating them into production environments Handling full PUBLISH BASE44, PUBLISH LOVABLE, and PUBLISH REPLIT workflows for client applications Deploying lovable app to playstore and managing full BASE44 TO PLAYSTORE and BASE44PLAYSTORE releases Developing cross-platform solutions using FLUTTER APPS, REACT NATIVE, and REACT NEXT JS Debugging and optimizing performance across web and mobile products Leading complete APP DEVELOPMENT lifecycle from idea to APP DEPLOYMENT in production Also served as a ZOHO EXPERT, integrating Zoho CRM and Zoho Creator systems into deployed applications for automation, analytics, and business scaling. Worked closely with founders and startups to ensure smooth APP DEPLOYMENT, stable BASE44 APP performance, and successful scaling through modern stacks including REACT DEVELOPER workflows and cloud-based infrastructure.