Senior Full Stack Software Engineer (f/m/d) – React, Node.js, TypeScript + AI

Bertelsmann-Jobs; Berlin; Remote; EUR 90,000 - 130,000; Full time

Benefits offered by this job

Annual leave 30 days

December 24 and 31 off

Smart Fridays with 4-day week option

Deutschlandticket

JobRad bike leasing

Wellness benefits

Corporate discounts

RTL+ access

Job summary

smartclip Europe GmbH is seeking a Senior Full Stack Software Engineer to craft production-grade applications using React, Next.js, TypeScript and Node.js. You will drive AI-powered interfaces and agent workflows, while ensuring robust APIs and maintainable systems.

You will collaborate with Product, UX/UI and Engineering to deliver scalable solutions across the stack. Remote-first with Berlin office opportunities, occasional in-person gatherings and travel.

Qualifications

• Experience with React, Next.js, TypeScript and Node.js
• Hands-on experience building REST APIs and working with SQL databases
• Awareness of AI-first interfaces or agent workflows is a plus
• Strong code quality mindset with attention to scalability and maintainability
• Ability to explain technical decisions and work independently

Responsibilities

• Build real, production-ready apps with React, Next.js, TS and Node.js
• Create AI-powered interfaces and agent workflows
• Experiment with AI while maintaining accountability for code
• Understand problems deeply before coding and propose solid solutions
• Collaborate with Product, UX/UI and Engineering teams
• Maintain high standards for architecture, performance and testing

Skills

React

Next.js

TypeScript

Node.js

APIs

SQL

GraphQL

Testing

Tools

Jest

Vitest

Jenkins

Grafana

Confluence

Jira

Job description

Senior Full Stack Software Engineer (f/m/d) – React, Node.js, TypeScript + AI

• Full-time
• LegalEntity: smartclip Europe GmbH

AI makes us faster. It doesn’t replace our human judgment. We challenge AI output, verify the results and own what we ship. We experiment fast, learn quickly and deliver with care.

Own the experience. Own the technology. Build what comes next.

Software is changing. AI agents are changing how people interact with products – and we’re building for what comes next.

Join our UI Engineering team and build production-grade products at the intersection of AI, engineering, UX and product. You’ll shape not just how our products look and work, but how people will interact with them in the future.

Be an engineer. Think like a Product Builder.

Your Mission

Build real, production-ready applications with React, Next.js, TypeScript and Node.js – from the UI to APIs and services.

Create new ways for people to interact with our products through AI-powered interfaces, conversational UIs and agent workflows.

Use AI to work smarter and faster. Experiment, build and test with AI, but always think for yourself and take responsibility for the code you ship.

Understand the problem before jumping into code. Get curious about users, challenge assumptions and find solutions that make a real difference.

Make good technical decisions. Build scalable architectures, work confidently across the stack and know when to keep things simple.

Work closely with Product, UX/UI and Engineering to build software that works well, performs reliably and is easy to maintain.

You’re not here just to turn tickets into components. You want to understand the problem, figure out the right solution and build something people actually use.

Your Skills

AI is part of how you work. You use AI to explore ideas, write code and solve problems, while reviewing its output critically and taking responsibility for what you ship.

Have strong experience with React, Next.js, TypeScript and Node.js and understand how modern web applications fit together.

Know your way around APIs and databases. You have hands-on experience building and integrating REST APIs, working with SQL databases and making sound decisions about data structures and database design. GraphQL is a plus.

Care about code quality. You consider architecture, performance, scalability and maintainability, spot edge cases and take testing seriously. Hands-on experience with Jest, Vitest or Node.js testing is essential.

Think beyond the code and take ownership. You understand the problem you're solving, can explain your technical decisions and work independently to find the right solution. Experience with AI-first interfaces, agent workflows or natural-language products is a plus.

Bonus: AWS, Jenkins, Grafana, Graylog, Confluence, Jira or shell scripting.

What to expect at smartclip

Remote-first, with meaningful time together: We work remotely most of the time, with occasional workshops, team sessions and opportunities to collaborate in person at our tech office in Berlin. We also host team events throughout the year, including our annual Company Offsite, which takes place at a different venue in Germany each year. Being willing to travel to and attend these gatherings is part of the role.

Ownership over micromanagement: Take ownership of your work and drive your topics forward independently.

Build > Talk: Try things early, get things wrong early, learn early.

High standards, low ego: We give direct feedback and work together openly and respectfully.

Keep growing: Develop your skills through hackathons, conferences and community exchange.

And of course, the benefits matter, too: 30 days of annual leave, plus December 24 and 31 off, Smart Fridays with the option of a four-day workweek, a Deutschlandticket (public transport pass) and JobRad bike leasing, sports and health benefits, mental health support, corporate discounts, access to RTL+ and much more.

Your CV is just the beginning.

What interests us more than your CV is a portfolio, a side project or a demo repo – something that shows us how you approach technical challenges and turn ideas into working solutions.

AI disclaimer: AI was allowed to contribute ideas, but it didn’t get the final say. We kept that privilege for ourselves.

smartclip is committed to fostering a diverse and inclusive work environment. All qualified applicants will be considered for employment regardless of ethnic origin, nationality, age, gender, gender identity, religion, sexual orientation, disability or any other personal characteristic.

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