Senior Fullstack Engineer (m/f/d)

Westwing; New Munich (MN); On-site; USD 101,000 - 146,000; Full time

Benefits offered by this job

30 days holiday

Hybrid work setup

Dog-friendly office

On-site daycare

Wellbeing resources

Employee discounts

Job summary

Westwing, Europe’s #1 in Beautiful Living e-commerce, is seeking a Senior Software Engineer for the Web & API team in Munich. You will own features end-to-end across storefront and mobile API, collaborating with Product and Design in an agile setup to deliver fast, reliable user experiences for millions of customers.

You'll work across React, TypeScript, AI-powered features, and data integrations, focusing on performance, security, and maintainability while shaping the architecture and guiding

Qualifications

• Deep expertise in React, TypeScript, and modern frontend development.
• Strong performance focus across the stack and SSR with React Router.
• Experience architecting scalable frontend architectures and collaborating with product/design.
• Fluency in English with excellent written and verbal communication.

Responsibilities

• Design, build, and maintain storefront features end-to-end.
• Extend integrations with e-commerce systems, headless CMS, search, analytics, and experimentation platforms.
• Build AI-powered user-facing features and review AI outputs for correctness, security, and maintainability.
• Own the caching, rendering, and performance strategy for storefront and mobile API.
• Collaborate with Product Managers and Designers to deliver high-quality experiences.
• Champion code quality through testing and reviews to keep the codebase healthy.

Skills

React & TypeScript

Frontend architecture

Performance optimization

AI tooling & integration

English communication

Tools

GraphQL

Server-side rendering

React Router

APIs (REST/GraphQL)

Headless CMS

Job description

JOIN OUR TEAM

As a Senior Software Engineer on our Web & API team, you will play a key role in shaping and evolving our e-commerce storefront. Working across the full stack, from React components and data integrations to AI-powered features, you will take ownership of complex features end-to-end, from specification and architecture through to delivery and monitoring. In close collaboration with Product and Design in an agile environment, you will combine a keen eye for performance with a drive to build experiences that delight millions of customers. Your curiosity for emerging technologies will help the team work smarter, ship faster, and continuously push the boundaries of what is possible. This position is permanent and based in Munich.

WHAT YOU'LL DO

Design, build, and maintain features end-to-end across the storefront and mobile API, from specification through server-side data loading and UI to production release and maintenance

Build and extend integrations with our e-commerce, headless CMS, search, analytics, and experimentation platforms

Build AI-powered user-facing features, directing and reviewing AI coding agents in your own and the team's workflow while owning the correctness, security, and maintainability of everything that ships

Own the caching, rendering, and performance strategy for the storefront and mobile API

Partner with Product Managers and Designers to turn business goals into performant, high-quality user experiences

Champion code quality and reliability through testing, code reviews, and the conventions and context that keep the codebase healthy for both engineers and AI agents as it grows

YOU COME WITH

Deep expertise in React, TypeScript, and modern frontend development, backed by strong software architecture skills and solid engineering principles

A sharp focus on performance across the stack, from frontend rendering to backend data fetching, including server-side rendering (ideally with React Router) and GraphQL

Strong specification and architecture judgment, turning ambiguous requests into precise, testable specs that teammates and coding agents build against, while making load-bearing technical decisions with confidence

Rigorous approach to code verification, designing the tests, evals, and checks that determine production readiness without relying on surface-level outputs

High standards for maintainability, resilience, security, and cost efficiency, reasoning through failure modes and remaining especially vigilant when reviewing AI-generated code

Proven fluency with Agentic AI, directing coding agents on well-scoped work, reviewing output with informed scepticism, owning the result, and leveraging AI to accelerate delivery and power user-facing features

A product-driven mindset that connects technical decisions to business impact and user experience, with prior experience in Product Engineering or Product Management considered a plus

Fluency in English with excellent written and verbal communication skills

WHY WESTWING

If you are looking for a place where ambition meets creativity, where ideas turn into impact fast, and where people are trusted to grow - you have found it.At Westwing, we’re building the Superbrand in Design with a team that’s shaping the future of beautiful home & living.Here is what you can look forward to:

• A high-performance culture built on trust, feedback and collaboration
• An inspiring, international environment that empowers you to think big, take ownership, and grow beyond your comfort zone
• A flexible hybrid setup with ideally 3 office days per week - because strong connections and quick collaboration make great ideas happen
• Professionally equipped workstation of your personal choice
• 30 days of paid holiday to rest, recharge, and come back ready to create
• A beautiful, centrally located, dog-friendly office with inspiring spaces, a sunny terrace, and good food - designed for moments that energise and connect
• Exclusive discounts - 40% off Westwing Collection, 20% off third-party brands (each on non-reduced items), 10% Family & Friends discount, plus special-occasion vouchers
• Wellbeing support through mental health resources, sports memberships, and preventive care
• Sustainable mobility options with discounted public transport and JobRad - moving with purpose and care for the planet
• Support for working parents, including our on-site Westwing Wichtel daycare and a partnership with multilingual provider Elly & Stoffl
• One annual Social Impact Day to give back to a cause you care about - because being human is our true superpower
• Team rituals that celebrate results and togetherness - from Summer & Winter Parties to Oktoberfest

ABOUT US

Westwing, Europe’s #1 in Beautiful Living e-commerce, is present in 20+ European countries and achieved a GMV (Gross Merchandise Volume) of EUR 507 million in 2025. As Europe’s premium one-stop destination for Design Lovers, it offers a unique brand experience with a carefully curated assortment of the