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Tim Endert
From Switzerland
$60/hr or $90,000/yr

Active over a week ago


Member since May 2026

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Senior Fullstack Engineer

Full-Stack Engineer
Available for hire
Years of experience
7+ years
Experience level
Senior
Available for
Freelance
Download Resume / CV

I am a Senior Fullstack and Mobile Engineer with over 8 years of industry experience, specializing in building scalable, product-led architectures. I bridge the gap between robust backend systems and high-performance mobile applications, with a proven track record of taking "extreme ownership" of the entire development lifecycle. My approach is deeply rooted in business value: I don't just write code; I build solutions that accelerate growth and reduce technical debt. I thrive in fast-paced environments where I can apply an MVP-first mindset to deliver polished, user-centric products. Key Technical Achievements: • Enterprise-Grade Mobile Redesign: Led the end-to-end technical architecture for a major mobility application (AMAG), ensuring seamless integration between a complex Node.js backend and a high-traffic Flutter/Swift frontend. • Strategic Innovation: Independently pioneered an in-house integration strategy for Apple CarPlay and Android Auto by reverse-engineering competitor UX and technical protocols. This initiative shifted a sidelined feature to a high-priority roadmap item and saved significant costs on external agencies. • DevEx & Scalability: Optimized engineering workflows by establishing centralized design system processes using Widgetbook. This drastically reduced UI testing cycles and enabled cross-team scalability for complex feature rollouts. • CI/CD & Automation: Architected and implemented automated deployment pipelines that significantly reduced release lead times and improved overall system stability. Technical Proficiencies: • Backend: Node.js, TypeScript, API Design, Microservices. • Mobile: Flutter (Expert), Swift, SwiftUI, Apple CarPlay Integration. • Frontend: React, Next.js, Modern CSS/UX. • Infrastructure: CI/CD, GitHub Actions, DevOps Best Practices. I am looking for challenging projects where I can leverage my versatility as a generalist to build exceptional software and drive technical excellence.

Employment History

Fullstack Developer at autoSense 2024 - 2026
Technical Project Lead & Architecture: Spearheaded the complete technical redesign of the AMAG app. Design Systems: Developed and implemented a comprehensive, interactive Design Book for AMAG (using Widgetbook) to ensure scalable UI/UX standards. Native Integrations: Independently developed and integrated native interfaces for Apple CarPlay and Android Auto. Backend & API Design: Fullstack development using Node.js, including the conception and implementation of a dedicated proxy server for secure and high-performance app communication. DevOps & Infrastructure-as-Code: Automated release processes by building CI/CD pipelines via Fastlane and managed infrastructure using AWS CloudFormation (YAML). Security & Market Intelligence: Conducted in-depth competitive analysis through reverse engineering of competitor applications to strategically position our own product.
Fullstack Developer at Migros Switzerland (FoodNow) 2023 - 2024
• Real-time Communication: Designed and implemented a fail-safe, real-time emergency communication solution via Twilio, drastically reducing response times for time-critical orders. • Mobile Multiplatform Architecture: Introduced and scaled a Kotlin Multiplatform (KMP) architecture to centralize business logic across iOS (SwiUI) and Android (Jetpack) platforms, accelerating feature parity and minimizing code duplication. • Performance API Design: Designed and developed a central GraphQL API layer (based on Node.js) that orchestrated complex data streams from web (Angular) and mobile frontends in a highly performant and type-safe manner. • Predictive Operations Tools: Developed an intelligent absence management system for the automated, data-driven optimization of delivery fleet capacities (Flutter/Sunmi).
Frontend & App Developer at moebel.de 2020 - 2023
• Legacy Migration & Modernization: Strategically migrated a technically neglected Flutter application to the latest version, managing complex breaking changes to ensure long-term maintainability. • CI/CD Orchestration (Codemagic): Designed and implemented a fully automated deployment process, massively optimizing release times from approx. 4 hours to 10 minutes (increasing delivery pipeline efficiency by over 95%). • Automated Quality Gates: Established strict build pipelines with mandatory test suites before every merge to ensure flawless code quality and minimize regression bugs in the production system. • Revenue & Checkout Architecture: End-to-end design and implementation of a frictionless "Click-And-Buy" funnel, including complex Stripe integration for direct monetization and increased platform revenue.
Software Developer Apprentice at CHECK24 2018 - 2020
• Production Impact from Day 1: Took on significant responsibility exceptionally early by contributing direct code and critical bug fixes to the live production system of Germany's leading comparison portal. • Legacy-to-Modern Migration: Actively contributed to complex architectural modernization by systematically migrating historically grown legacy codebases into a modern Angular ecosystem. • Architectural Deep-Dive (Backend): Designed and developed an independent, functional PHP framework (reverse engineering the Laminas/Zend framework) to gain a profound, system-level mastery of fundamental backend design patterns. • Agile & International Delivery: Seamlessly integrated into a highly experienced, international development team and proactively, autodidactically built deep knowledge in Angular.

Education

Associate Degree at IHK Hamburg 2018 - 2021