The world of payment processing is rapidly evolving, and businesses are looking for loyal and strategic partners, to help them grow.
Meet Nuvei, the Canadian fintech company accelerating the business of clients around the world. Nuvei's modular, flexible and scalable technology allows leading companies to accept next-gen payments, offer all payout options and benefit from card issuing, banking, risk and fraud management services. Connecting businesses to their customers in more than 200 markets, with local acquiring in 50 markets, 150 currencies and 700 alternative payment methods, Nuvei provides the technology and insights for customers and partners to succeed locally and globally with one integration.
At Nuvei, we live our core values, and we thrive on solving complex problems. We’re dedicated to continually improving our product and providing relentless customer service. We are always looking for exceptional talent to join us on the journey!
Your Mission:
We are seeking a passionate AI Python Developer who thrives on building innovative solutions in a state-of-the-art AI and Machine Learning environment. If you love technology, embrace clean coding principles, and are excited by DevOps, AI, and Machine Learning, this is the perfect opportunity for you.
*You can be based anywhere in Romania*
Responsibilities:
- Design, build, and maintain efficient, reusable, scalable, and reliable Python code.
- Partner with product and domain experts to translate business problems into well posed analytical/ML/LLM tasks.
- Build datasets and pipelines, run EDA, and design statistically valid experiments.
- Train, evaluate, and ship models/LLM agents; own their production lifecycle (observability, reliability, and continuous improvement).
- Define and maintain golden test suites; automate offline and online evaluations to prevent regressions.
- Agile mindset. Contribute to product requirements - user stories & epics, extracting requirements from high-level User Stories.
- Perform code reviews of your peers and refactor existing code to improve readability and maintainability.
- Champion privacy, security, and responsible AI practices in day-to-day work.
Requirements
- Experience with Python programming language.
- Experience with LLMs and development frameworks such as LangChain, Autogen or CrewAI.
- Model Evaluation & Quality, hands on with selecting and interpreting the right metrics cross validation and explainability.
- Experience with machine learning packages such as pandas, numpy, scikit, keras, tensorflow.
- Strong exploratory data analysis skills (pandas/polars), statistical inference, and experiment design (A/B tests, power analysis, sequential testing). Comfortable with data visualization (matplotlib/seaborn/plotly) and communicating insights clearly to non‑technical partners.
- Good understanding of data modelling.
- Experience working with databases, basic knowledge of SQL.
- Understanding of programming languages principles and methodology, use of code versioning.
- Technical background and experience with software development.
- Experience with Agile development processes.
- Comfortable in English written and spoken.
- University degree in computer science, electronics, programming, or related areas.
- Focus on getting things done - we ship working products and we ship often.
Would be a plus:
- Experience in working with an AI copilot
- Experience with Docker, Kubernetes
- Knowledge of ML algorithms (e.g., classification, regression, clustering, anomaly detection).
- Experience with MLflow and a model registry.
- Hands on with RAG pipelines (embeddings, retrieval strategies, vector DBs) and evaluation frameworks (Ragas, Promptfoo, DeepEval, LangSmith).
- Experimentation at scale: A/B testing platforms, sequential tests, or bandits; online metrics definition and guardrail metrics.
- Observability for ML/LLM systems: quality, drift, data freshness, cost/latency budgets, and alerting.
- Familiarity with Azure managed AI services.
- Experience with BI, analytics, data interpretation and representation
- Code quality concepts such as SOLID, unit testing
Benefits
- Competitive remuneration package and flexible benefits.
- 21 days annual leave.
- Private Medical Insurance.
- Access to benefit platform.
- Glasses reimbursement.
- Free tea & coffee.
- Access to the relaxation area where we have PlayStation 5, Ping-pong, team games and other facilities.
Please send your resume in English.
Nuvei is an equal-opportunity employer that celebrates collaboration and innovation and is committed to developing a diverse and inclusive workplace. The team at Nuvei is comprised of a wealth of talent, skill, and ambition. We believe that employees are happiest when they're empowered to be their true, authentic selves. So, please come as you are. We can't wait to meet you.
