List job

Senior AL/ML Engineer

Requirements: What you'll own You'll own the ML behind our products, end to end. In practice that means: * Training and fine-tuning: embedding models, rerankers, classifiers and LLMs, trained on our own data. * Document understanding: models that pull structure, quantities and product specs out of tenders, orders and catalogs. * Product matching: retrieval and LLM agents that match tender positions to the right products. * Evaluation: offline benchmarks, per-customer evals and gates that keep a new model from shipping if it makes things worse. * Training and serving infrastructure: automated retrain pipelines, GPU serving and vector search in production. * Customer problems: when a model gets something wrong for a customer, finding out why and fixing it. What success looks like after 3 months * There's a model or part of the pipeline people now think of as yours, and you're the one deciding what happens to it next. * You've spotted a problem nobody asked you to solve, made the case for it, and shipped a first version. * A model you trained runs in production, and customers can see the difference in their results. * Retraining runs automatically, and nothing reaches customers without passing an eval you designed. * You've cut LLM cost or latency by replacing an expensive step with a smaller model of your own. * You've decided at least one thing we should stop building. Responsibilities: You'll probably thrive here if * You've taken something from zero to one: a company, a model in production, or a side project with real users. * You've trained and fine-tuned models yourself, ideally embeddings, retrieval or document models, and evaluated them honestly on held-out data. * You've built with LLMs in production and know where agents fail. * You write strong Python and can run what you build: Docker, CI/CD, and cloud on GCP, AWS or Azure. * You measure before you believe, and a single aggregate score doesn't convince you. * You'd rather open a customer's actual document than wait for a spec. * You're comfortable with ambiguity. You can make progress while the problem is still half-defined, which at a startup it usually is. * You want a large scope of responsibility and are happy to own things well beyond your job title. * Rapidly changing requirements don't throw you. When customers or priorities shift, you adapt and keep going. * You enjoy direct customer contact and want to be on customer calls. * You write clearly in English. German is a plus, not a requirement. You probably won't enjoy it if * You just want to code and go home. * You don't like talking to customers. * Ambiguity and chaos bother you. * You want a well-defined research agenda handed to you. * You'd rather hand a model to someone else to deploy and debug. * Your main goal is managing people soon. Here, scope grows with what you own, not with headcount. Technologies: AI AWS Azure CI/CD Cloud CTO Docker Embedding Models ERP Fine-tuning GCP LLM Model Serving Python Agentic AI Langfuse PostgreSQL More: If you've built something before, start here Most ML jobs hand you a benchmark. This one hands you a business problem with paying customers and their real data. Construction tenders are long, messy and full of trade jargon, and every decision a customer makes on our platform becomes a labeled example you can train on. We need someone who can turn that data into models that customers notice: from the first experiment to the model serving production traffic, and back again when a customer says it got something wrong. If you've founded a company (whether it worked out or not), been the first ML engineer somewhere, or shipped a model people paid for, this role was written for you. About Scalera Scalera is an ETH Zurich spin-off building AI for the €200B+ European construction industry. Manufacturers, wholesalers and suppliers in Switzerland, Austria and Germany still run their most document-heavy work by hand, from reading 300-page tenders to retyping purchase orders into their ERP. We automate that work one process at a time, and ML sits at the center of every one of them. How we hire * Screening call (30 min) with our VP Engineering. It's two-way: ask us anything, including the hard questions. * Technical deep-dive call: walk us through a model or system you built, the decisions you made and what went wrong in production. * Meet Scalera Day: join us for a day at our office in Zürich, work on a real problem with real (anonymized) tender data, and meet the team. * Offer: if it's a fit on both sides, we'll move quickly to an offer. Working at Scalera * Zürich HQ, four days in the office, Fridays remote. If not located in Zürich then this role is open to remote within the EU or EEA, * Occasional customer visits across Switzerland, Austria and Germany * Small team, no bureaucracy. You'll work directly with the CEO, CTO, VP Engineering and Customer Success * Competitive salary and meaningful equity Founders and former founders: if you're unsure whether you fit, send a few lines about what you built and why you moved on. We read every one. last updated 44 week of 2026

Zurich

CHF 100K – 120K/year

Senior Backend & AI Engineer

Requirements: What you'll do You'll be part product manager, part engineer. You'll spend real time with customers and help shape what we build. Sometimes you'll spot the next problem yourself, and sometimes we'll hand you a clear priority to run with. * Spend real time with customers. Join calls and site visits, sit with the people who do the work, and understand why they do it the way they do. You'll know their problems firsthand, not from a ticket. * Shape what to build. Turn what you hear into a clear problem, a scope and a plan, and push back when the obvious request isn't the real need. When we bring you a priority, you'll own how it gets solved. * Build it. Design and build backend services in Go and Python that turn messy tenders, catalogs and purchase orders into data customers can rely on. * Ship, then check. Get it in front of customers fast, watch how they actually use it, and iterate. * Own it in production. When something breaks at a customer, it's yours to understand and fix. * Build with AI. Use AI heavily in how you work, and design systems that agents can use as well as people. Responsibilities: You'll probably thrive here if * You've taken something from zero to one: a company, a product line, or a side project with paying users * You've built and run backend systems in production that other people depend on. We care more about your judgment than your language; you're strong in Go or Python and happy to work in both * You're solid on data modeling, API design and messy real-world data * You'd rather talk to a customer than wait for a spec * You're comfortable with ambiguity. You can make progress while the problem is still half-defined, which at a startup it usually is * You want a large scope of responsibility and are happy to own things well beyond your job title * Rapidly changing requirements don't throw you. When customers or priorities shift, you adapt and keep going * You enjoy direct customer contact and want to be on customer calls * You make things simpler over time, not more clever * You write clearly in English. German is a plus, not a requirement You probably won't enjoy it if * You just want to code and go home * You don't like talking to customers, whether on calls or on the occasional site visit * Ambiguity and chaos bother you * You want a well-defined backlog handed to you * Your main goal is managing people soon. Here, scope grows with what you own, not with headcount Technologies: AI API Backend CTO ERP FastAPI GCP PostgreSQL Product Manager Python Cloud Agentic AI Golang LLM React More: If you've built something before, start here The hardest part of a startup usually isn't the code. It's finding customers who really need what you build and getting them to change how they work. At Scalera, that part is done: manufacturers, suppliers and contractors across Switzerland, Austria and Germany already run their tenders through us every day. What we need now are people who can take the next unsolved problem and turn it into a product customers can't do without. If you've founded a company (whether it worked out or not), been the first engineer somewhere, or built something people paid for, this role was written for you. About Scalera Scalera is an ETH Zurich spin-off building AI for the €200B+ European construction industry. Large manufacturers and suppliers still run their most document-heavy processes by hand, from reading 300-page tenders to retyping purchase orders into their ERP. We automate them one by one. Our product matching already handles 1,400 tender positions in 16 minutes at 98% precision, work that used to take a sales rep most of a day. What success looks like after 3 months * There's a part of the product people now think of as yours, and you're the one deciding what happens to it next * You've spotted a problem nobody asked you to solve, made the case for it, and shipped a first version * You've shipped features from both sources: priorities we set and ideas from your own customer conversations * At least once, you've talked us out of building something customers didn't really need * You've left a part of the platform simpler than you found it Our stack Go and Python (FastAPI), PostgreSQL, GCP, and LLMs throughout the document pipeline. You don't need to know all of it on day one. How we hire * Screening call (30 min) with our VP Engineering. It's two-way: ask us anything, including the hard questions. * Technical deep-dive call: walk us through something you built from scratch, the decisions you made and what went wrong. * Meet Scalera Day: come to our office in Zürich, work on a real problem with real (anonymized) construction documents, and meet the team. * Offer: if it's a fit on both sides, we'll move quickly to an offer. Working at Scalera * Zürich HQ, four days in the office, Fridays remote * Occasional customer visits across Switzerland, Austria and Germany * Small team, no bureaucracy. You'll work directly with the CEO, CTO, VP Engineering and Customer Success * Competitive salary and equity last updated 44 week of 2026

Zurich

CHF 100K – 120K/year