Senior Software Engineer (Next.js / TypeScript / Mobile)

Jobtailor; Deutschland; Vor Ort; EUR 90.000 - 130.000; Vollzeit

Zusammenfassung

Jobtailor in Germany seeks a senior full-stack engineer to own the Next.js codebase and platform architecture, crafting features across frontend and backend and guiding mobile app delivery with React Native (Expo/Capacitor) to production on iOS and Android.

You will collaborate with the founder and UI/UX designer to ship polished experiences, optimize PostgreSQL and services, and shape marketplace workflows including payments, logistics, and garment-care related tools.

Qualifikationen

• 5+ years of experience building modern web applications.
• Strong expertise with Next.js, React, TypeScript, and modern JavaScript development.
• Solid backend development experience.
• Strong experience with PostgreSQL or other relational databases.
• Experience owning production systems and live databases.
• Experience developing and publishing mobile applications using React Native (Expo), Capacitor, or similar technologies.
• Experience releasing applications to the Apple App Store and Google Play Store.
• Strong understanding of software architecture and scalable application design.
• Experience collaborating closely with product designers and translating Figma designs into polished user experiences.
• Knowledge of software testing methodologies and production-quality engineering practices.
• Ability to work autonomously with minimal supervision.
• Excellent communication skills and ability to collaborate with founders and non-technical stakeholders.
• Availability to work primarily during New York (Eastern Time) business hours.
• Nice to Have
• Experience building marketplace platforms.
• Background in e-commerce products.
• Previous experience in Fashion Retail, Fashion Technology, or Fashion E-commerce (highly valued).
• Experience with Stripe Connect, including marketplace payments, escrow flows, manual capture, and off-session charging.

Aufgaben

• Own and maintain the company's entire Next.js codebase.
• Design, develop, and ship high-quality product features across frontend and backend.
• Lead the technical strategy for the company's mobile application (React Native with Expo, Capacitor, or alternative approach).
• Deliver production-ready iOS and Android applications.
• Collaborate closely with the founder and UI/UX designer to create intuitive and polished user experiences.
• Build and improve marketplace workflows, including rentals, payments, notifications, and logistics.
• Develop new features related to garment care, dry‑cleaning operations, inventory condition tracking, and operational workflows.
• Maintain and optimize PostgreSQL databases and backend services.
• Ensure application quality through testing strategies, debugging, and performance improvements.
• Participate in architectural decisions and recommend the best technical solutions for product evolution.
• Communicate technical concepts effectively with non-technical stakeholders and help translate business ideas into product features.
• Work independently while maintaining high engineering standards and shipping consistently.

Kenntnisse

Next.js

React

TypeScript

JavaScript

Backend development

PostgreSQL

React Native (Expo)

Capacitor

Stripe Connect

Software architecture

Testing methodologies

Autonomous work

Communication with stakeholders

Tools

Next.js

React

TypeScript

JavaScript

PostgreSQL

React Native (Expo)

Capacitor

Stripe Connect

Jobbeschreibung

Responsibilities

• Own and maintain the company's entire Next.js codebase.
• Design, develop, and ship high-quality product features across frontend and backend.
• Lead the technical strategy for the company's mobile application (React Native with Expo, Capacitor, or alternative approach).
• Deliver production-ready iOS and Android applications.
• Collaborate closely with the founder and UI/UX designer to create intuitive and polished user experiences.
• Build and improve marketplace workflows, including rentals, payments, notifications, and logistics.
• Develop new features related to garment care, dry‑cleaning operations, inventory condition tracking, and operational workflows.
• Maintain and optimize PostgreSQL databases and backend services.
• Ensure application quality through testing strategies, debugging, and performance improvements.
• Participate in architectural decisions and recommend the best technical solutions for product evolution.
• Communicate technical concepts effectively with non-technical stakeholders and help translate business ideas into product features.
• Work independently while maintaining high engineering standards and shipping consistently.

Requirements

• 5+ years of experience building modern web applications.
• Strong expertise with Next.js, React, TypeScript, and modern JavaScript development.
• Solid backend development experience.
• Strong experience with PostgreSQL or other relational databases.
• Experience owning production systems and live databases.
• Experience developing and publishing mobile applications using React Native (Expo), Capacitor, or similar technologies.
• Experience releasing applications to the Apple App Store and Google Play Store.
• Strong understanding of software architecture and scalable application design.
• Experience collaborating closely with product designers and translating Figma designs into polished user experiences.
• Knowledge of software testing methodologies and production-quality engineering practices.
• Ability to work autonomously with minimal supervision.
• Excellent communication skills and ability to collaborate with founders and non-technical stakeholders.
• Availability to work primarily during New York (Eastern Time) business hours.
• Nice to Have
• Experience building marketplace platforms.
• Background in e-commerce products.
• Previous experience in Fashion Retail, Fashion Technology, or Fashion E-commerce (highly valued).
• Experience with Stripe Connect, including marketplace payments, escrow flows, manual capture, and off-session charging.