Senior Backend Engineer (Python)

Scalera; Zürich; Vor Ort; CHF 90.000 - 120.000; Vollzeit

Benefits dieser Stelle

Competitive salary

Equity

Flexible work arrangement

Zusammenfassung

Scalera in Zürich is seeking a Senior Backend Engineer with expertise in Python to enhance their AI-driven procurement platform. The successful candidate will work closely with the CTO and VP Engineering, tackling integration and scalability challenges while collaborating with a dedicated team.

Ideal applicants have 4+ years of backend experience, solid API design skills, and familiarity with FastAPI or Django. The role offers a competitive salary and equity, with a flexible work arrangement including four days in-office and Fridays remote.

Qualifikationen

• 4+ years of backend engineering experience with Python as primary language.
• Strong API design skills and experience with RESTful systems.
• Hands-on experience with FastAPI or Django in production.

Aufgaben

• Own problems end-to-end: talk to users, understand their needs, and ship solutions.
• Build and maintain Python backend services to bring AI capabilities into production.
• Design and implement APIs linking AI systems with frontend apps.

Kenntnisse

Backend engineering experience

Python programming

API design

Experience with FastAPI or Django

Database understanding

CI/CD practices

Communication skills

AI/ML interest

Tools

GCP (Cloud Run, BigQuery, Pub/Sub)

Jobbeschreibung

Senior Backend Engineer (Python)

About Us

Scalera is an ETH Zurich spin-off building AI-powered procurement software for the €200B+ European construction industry. Our platform automates supplier selection, tender management, and bid evaluation, already processing over CHF 8bn in tender volume for 110+ customers across Switzerland, Austria, and Germany.

We’re a small, fast-moving team that works closely with users and applies genuinely new AI techniques to complex, real‑world problems. We're growing our team and looking for an engineer who's excited about building the infrastructure behind intelligent procurement.

The Role

You’ll join a collaborative engineering team building the services and APIs that power Scalera’s AI‑driven platform. Working closely with the CTO and VP Engineering, you’ll tackle challenges like integrating AI models into production workflows, processing large and complex datasets, and ensuring reliability as we scale across Europe.

The problems we work on are rarely solved with off‑the‑shelf tools. We value engineers who are comfortable exploring, iterating, and discovering the right solution through experimentation.

What You’ll Do

• Own problems end-to-end: talk to users, understand their needs, and ship solutions
• Build and maintain Python backend services that bring AI capabilities into production (e.g. document parsing, supplier matching, bid scoring)
• Design and implement APIs and integrations connecting our AI systems with frontend applications and external platforms
• Develop data pipelines to ingest, normalize, and process large volumes of structured and unstructured construction data
• Collaborate with teammates on code reviews, testing, and CI/CD practices
• Contribute ideas on applying new AI techniques to real procurement challenges

What we’re looking for

• 4+ years of backend engineering experience, with Python as your primary language
• Strong API design skills and experience with RESTful systems
• Hands‑on experience with FastAPI or Django in production
• Solid understanding of databases, data modeling, and query optimization
• Experience with CI/CD and a strong focus on code quality and maintainability
• Ability to make progress in ambiguous environments. You can scope, prioritize, and deliver without perfect clarity
• Interest in AI/ML systems and how they behave in production
• Clear communicator and strong team collaborator

Nice to have

• Experience with GCP (Cloud Run, BigQuery, Pub/Sub or similar).
• Background in data‑heavy or AI‑integrated product architectures.
• Familiarity with AI developer tooling (Cursor, Claude, Copilot, etc.).
• B2B SaaS, construction tech, or procurement domain knowledge.
• German language skills (bonus, not required).

Working at Scalera

• Zürich HQ, four days in-office with Fridays remote.
• Small team, no bureaucracy. You’ll work directly with the people making decisions.
• Competitive salary and equity.