Back End Developer, Utrecht

Senior Backend (Python) Developer - AI-Driven SaaS Product - Utrecht / Hybrid– up to 95K

My client is a scale-up that has built and is successfully scaling an AI-driven SaaS product. Their international customer base is growing fast, backed by solid investments. The product helps knowledge workers automate repetitive tasks, giving teams more time for real human interaction and high-value work. While they integrate the latest possibilities like ChatGPT, they’ve actually been building toward this vision since 2018, long before the current AI hype.

The role As a Senior Backend Developer you will strengthen the tech team, consisting of Data Scientists, Backend and Frontend Developers. You’ll be joining a funny and enthusiastic group that builds high-quality features in a fast-paced environment. We aren' t just looking for someone to pick up tickets; we need a senior engineer who leads by example. You should be the type of person who thrives on continuous improvement - if you see something broken or inefficient, you fix it or create a clear plan how to fixit, document the solution and help the rest of the team learn from it.

Tech stack We rely on a modern and scalable stack to keep our product running smoothly. Youʼll be working heavily with: Python and FastAPI SQLAlchemy&Alembic for Database interaction Elasticsearch Google Cloud Platform (GCP) Pub/Sub for messaging Temporal for workflow orchestration

What you bring 12+ years of experience with commercial, production-running systems. You know what truly great software looks like and have the hands-on experience to move existing systems to that level. A pro-active "boy scout" mentality - you always leave the code better than you found it. Keeping it with the given estimations.A true can-do attitude. You don' t just identify problems; you get energy from solving them quickly and efficiently. Deep seniority in Python. You know how to write clear, simple code without over-complicating things. Strong understanding of software architecture and design principles. Hands-on experience with Databases, Search Engines (Elasticsearch is a pro) and GCP.You' re comfortable setting up meaningful alerts and keeping systems observable and reliable The ability to improve CI/CD pipelines and a commitment to writing solid tests and performing meaningful code reviews. An interest in AI and Machine Learning, specifically around LLMs and ReRankers. An enthusiastic personality. You're good with people, you like to help and you thrive in an honest, transparent culture.The ability and desire to mentor engineers, fostering growthand sharing your expertise generously Familiarity with Infrastructure as Code tools is a plus.

Why join us? Work with ambitious, driven people in a high-energy scale-up. Plenty of growth opportunities; as we scale, new roles and responsibilities open up constantly. Flexibility to work from home, with a policy of 2 days in the Utrecht office to collaborate and learn together. Solid package that includes unlimited days off.

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