About this role

Salary: CHF 100’000 - 120’000 per year

Requirements:

To excel in this role, candidates should have:
4+ years fullstack experience with a strong emphasis on React, Next.js, and modern TypeScript in complex B2B SaaS or technical environments.
Proficiency in backend development with Python (FastAPI preferred), plus solid understanding of API design and integrations.
Proven track record shipping scalable, user-friendly applications in fast-moving environments, balancing speed and quality.
Hands-on experience with CI/CD, testing frameworks, and version control (GitHub), ensuring code quality and maintainability.
Strong communication and problem-solving skills, comfortable collaborating across teams and directly with users/customers.

Responsibilities:

As a Senior Fullstack Engineer at Scalera AI, you will:
Lead frontend development (60% focus) in a backend-heavy team, shaping the product’s user experience with React/Next.js.
Contribute to backend services (40% focus) using Python/FastAPI, ensuring seamless integrations and performance.
Collaborate closely with CEO, CTO, and Head of Engineering, influencing technical decisions and product direction.
Ship features end-to-end: from problem discovery with users to implementation, testing, and production.
Maintain high standards in code quality, testing, and deployment through CI/CD best practices.
Embrace a startup mindset (“chaos hacker”): iterate quickly, talk to users, and see through startup fog.
Be part of our growth journey: Zurich HQ (Sihlcity), 4 days/week, working with a team of ETH/EPFL engineers who have already processed CHF 3bn+ tender volume.

Technologies:

AI
API
Backend
CI/CD
Cloud
CTO
Django
FastAPI
Frontend
Fullstack
GCP
GitHub
Python
React
TypeScript
UX UI Design
JavaScript
NextJS

More:

RA Scale AG is an ETH Zurich spin-off building Scalera.ai, the AI-powered SaaS platform transforming the €200B+ European construction industry. We automate supplier selection, tender management, and bid evaluation - already processing CHF 8bn+ tender volume for 110+ customers in Switzerland, Austria, and Germany.

Our culture is guided by startup values: humble collaboration, “chaos hacker” mentality, and direct user focus. We believe in solving hard problems with speed and precision, making tendering as easy and intelligent as possible.

We’re on a mission to become the European leader in AI-driven construction procurement. Joining Scalera means working hands-on with cutting-edge projects, scaling across Europe, and helping to build the norm for how every future construction project gets tendered.

last updated 39 week of 2025