Senior Full Stack Software Engineer React +.NET (gn)

ATworld; Berlin; Vor Ort; EUR 70.000 - 90.000; Vollzeit

Zusammenfassung

A dynamic tech company in Berlin is looking for a Senior Full Stack Developer. You will shape the core of the app, contributing to both mobile and web platforms. Collaborating closely with the CTO, you'll pioneer new features and ensure scalable, robust software. Candidates should have extensive experience in Full Stack Development, particularly with React and C#/.NET. Enjoy the benefits of a meaningful role in a fast-growing tech environment with a competitive salary and an international team.

Leistungen

Competitive salary

Strong development opportunities

Collaborative international team

Qualifikationen

• 5 years of experience as a Full Stack Developer with a track record of shipping products.
• Expertise in modern front-end frameworks and building responsive UIs.
• Experience with building high-performance scalable applications.

Aufgaben

• Design and develop new features for the mobile app and web application.
• Architect solutions that are scalable, performant, and secure.
• Participate in code reviews and mentor fellow developers.

Kenntnisse

Full Stack Development

React

C# / .NET Core

RESTful APIs

Problem-Solving

Tools

AWS

React Native

Spring

Jobbeschreibung

About ATworld

ATworld is redefining the way we work and connect. We offer a flexible connected and ownable fourth space a dynamic ecosystem where individuals and companies can access resources services and communities anytime anywhere.

Powered by a sleek mobile app built with React Native ATworld makes finding your perfect workspace effortless giving members instant access to hundreds of inspiring locations across Europe. Our rapidly growing community launched successfully in March after a thriving closed beta and we have already unlocked 400 locations for our members.

Supported by hotels offices and partner locations owned by Aroundtown ATworld is rapidly expanding across Europe. We are committed to proving that doing good and doing well can go hand in hand. Backed by one of Europes largest real estate funds ATworld has the resources scale and operational excellence including ISO-27001 certification to pioneer the future of work.

We are a small high-performing and dynamic team that thrives on innovation collaboration and a healthy dose of fun. Now entering an exciting growth phase this is the perfect time to join and help us scale.

Job Scope

Were on the hunt for a Senior Full Stack Developer who isnt just skilled but truly passionate about making an impact. This isnt just about writing code; its about shaping the very core of the ATworld app as we gear up for massive scale and ambitious plans for 2026.

Youll be a pivotal player contributing significantly to our React Native mobile app and playing a key role as we begin to build out a new web application to support operations (where your React expertise will shine!). Youll work side-by-side with our experienced CTO (a leader who loves to push the boundaries of whats possible while keeping the team spirit high). Youll own critical features from concept to launch ensuring our platform is robust scalable and delightful for our users. If youre someone who thrives on complex challenges and wants to see your work directly influence a global movement youve found your home.

Responsibilities

Your days will be a blend of strategic thinking and hands-on creation as you :

• Pioneer New Features : Design develop and deploy exciting new functionalities primarily for our React Native mobile app and later for our new web application.
• Build for Hyper-Growth : Architect and implement solutions that arent just functional but inherently scalable performant and secure because were preparing for exponential expansion.
• Collaborate & Elevate : Jump into engaging brainstorming sessions and work closely with our CTO and other senior developers to define our technical roadmap and champion best practices.
• Craft Elegant Code : Write clean maintainable and highly efficient C# / .NET Core backend and React / React Native frontend code that stands the test of time (and scale!).
• Lead & Learn : Participate actively in code reviews to share your expertise with fellow developers fostering a culture of continuous learning.
• Innovate with AI : Potentially dive into exciting new AI features leveraging Large Language Models (LLMs) to enhance the user experience.
• Stay Ahead of the Curve : Continuously explore emerging technologies and industry trends ensuring ATworld remains at the forefront of innovation.

Your superpowers

The Non-Negotiables :

• You've got 5 years of battle-tested experience as a Full Stack Developer with a proven track record of shipping impactful products.
• React is your playground : You're a wizard with modern front-end frameworks and can build intuitive responsive UIs.
• C# Core are your backend fortress : You deeply understand building robust scalable APIs and services.
• You've demonstrably built and maintained high-performance scalable applications you understand what it takes to prepare for significant user growth.
• RESTful API is your second language.
• A fervent dedication to writing secure top-tier code security isnt an afterthought for you.
• You're a proactive problem-solver capable of tackling complex challenges with creativity and tenacity.

Awesome Bonus Points If You've Got :

• React Native experience : As our current app is mobile this is a very strong plus!
• Hands‑on experience deploying and managing services on AWS .
• Previous experience working in a scale‑up environment.
• LLM Experience : Familiarity with large language models especially frameworks like Langchain or platforms like Amazon Bedrock.

What We Offer

• A central meaningful role in a fast-growing European platform
• Direct collaboration with leadership and strong development opportunities
• A diverse international team that values collaboration and shared ownership
• Competitive salary

To Apply

If you would be interested in applying for the position please use the Apply Now button. Or directly reach out to :

David Gregor

Co-Founder & CTO

LinkedIn

We are committed to finding innovative ways to develop its cultural and brand values. Its this kind of thinking that creates a unique work environment by rewarding talent celebrating diversity and encouraging forward thinking.

All qualified applicants will receive consideration for employment without regard to race color religion sex sexual orientation gender identity national origin disability status or any other characteristic protected by applicable law.

Required Experience

Senior IC

Key Skills

Spring, .NET, C / C++, Go, React, OOP, C#, AWS, Data Structures, Software Development, Java, Distributed Systems

Employment Type

Contract

Experience

Years

Vacancy

1