Itentio IT Recruitment
Our client is a fast-growing AI startup developing an advanced platform that powers real-time, AI-driven recommendations and search visibility solutions. They are now looking for Senior FullStack Engineer to join their core engineering team and help build scalable features, intuitive dashboards, and efficient APIs for a product that is redefining AI-powered search experiences.
Whom are we looking for – Senior FullStack Engineer
Location:Berlin, Germany (on-site)
Brief position description
As a Senior Full Stack Engineer, you will be responsible for architecting, building, and optimizing the core platform of a next-generation AI product. You will collaborate closely with product, design, and data teams to deliver new features end-to-end – from rapid prototyping to production-ready deployment. Your work will include building scalable APIs, creating intuitive dashboards, and ensuring smooth data flows that drive real-time AI-powered insights for customers. This role is perfect for developers who thrive in fast-paced startup environments, enjoy ownership of projects from start to finish, and are passionate about AI-driven products that solve complex challenges.
Why is it worth joining this company?
- Very fast-growing startup: they are showing incredible growth and customer acquisition, had a quickest fundraise from top-tier VC funds.
- AI-First Product: Work on cutting-edge AI-driven search and recommendation technologies shaping the next generation of digital visibility that grows extremely fast.
- Impact & Ownership: Join an early-stage team where your decisions directly influence the product and its future, and you have a solid career progression opportunity.
- Competitive Offer: Attractive salary with equity options for early team members!
Senior FullStack Engineer – Key Responsibilities:
- Design, develop, and optimize the company’s core platform with TypeScript (frontend and backend).
- Build scalable APIs and real-time features that power AI-driven insights.
- Develop sleek and intuitive dashboards using React, shadcn/ui, and Tailwind CSS.
- Collaborate with product, design, and data teams to transform ideas into production-ready features.
- Take ownership of projects end-to-end: from prototyping to testing, shipping, and performance optimization.
- Maintain code quality, consistency, and productivity using modern tools and practices.
Tech Stack
- Languages: TypeScript
- Backend: GCP, Cloud Functions, Firestore, Firebase Auth, Cloud Tasks, Cloud Scheduler
- Frontend: React, shadcn/ui, Tailwind CSS
- AI Models: OpenAI, Claude, Perplexity, Gemini, Llama, etc.
Senior FullStack Engineer – Main requirements:
- Strong experience with TypeScript and React for end-to-end feature development;
- Ability to work quickly and deliver high-quality, maintainable code in a startup-paced environment;
- Use Cursor to enhance productivity while keeping committed code concise, clear, and maintainable;
- Hands-on experience implementing frontend and backend features independently;
- Familiarity with Google Cloud Platform services (Cloud Functions, Firestore, Firebase Auth, Cloud Tasks, Cloud Scheduler);
- Ability to adapt to an existing codebase and follow its conventions;
- Strong problem-solving skills and a bias for action.
Desired Attributes
- Experience with or curiosity about AI models (OpenAI, Claude, Gemini, Llama, etc.).
- Contributions to open-source projects or notable side/hobby projects that we can check out.
- Previous experience in an early-stage startup or founding environment is a plus.
Senior FullStack Engineer – What is in it for you?
- Salary: between €75,000 – €120,000 annually either on employment contract or B2B;
- Equity: 0.1% – 0.3% stock options to benefit from the company’s future growth;
- Impact & Career Growth: Join a core team of early builders shaping the next AI success story;
- Food in the office;
- Relocation support and bonus;
- Latest MacBook and additional screen for your convenience;
- Workation opportunity;
- Help with working visa (if needed);
- Collaborative Culture: Work alongside top talent with a focus on innovation and speed of delivery.
The Next Step for you:
Are you ready to be part of a team that is building the next generation of AI-driven search and recommendation platforms? Apply via the contact form below and join this journey of impact and innovation.
Itentio IT Recruitment privacy and equal opportunity statements:
By submitting the recruitment application, you consent to the processing of your personal data contained therein. The controller of your personal data is Vladyslav Muzhylivskyi operating under the business name Vladyslav Muzhylivskyi Itentio with its registered office in Kraków (Tax ID: 6751522794). Personal data will be processed in order to carry out the recruitment process for the position specified in the job offer, including for the purpose of assessing the qualifications for work in this position. You can withdraw your consent at any time, which, however, does not affect the legality of the processing that was carried out on its basis before its withdrawal. You have the right to request access to your data, to rectify it, delete it or limit its processing, as well as the right to transfer your personal data, the right to object to data processing and the right to lodge a complaint with the supervisory authority for the protection of personal data. Additional information on the processing of personal data is in our Privacy Policy available at https://itentio.com/privacy-policy/.
Please note that all applications are treated with strict confidence. Itentio IT Recruitment will never share your data outside our organization without your written consent. Itentio is an equal-opportunity recruitment company and values diversity at our company. We do not discriminate based on race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.
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