Summer Trainee, AI/ ML Engineering

Ready to start summer with Neste?

We are looking for you, Summer Trainee, AI/ML Engineering to join our Process Analytics, Automation & AI team in Espoo (Keilaranta). We are a part of the Group Business Processes team, driving business process efficiency and excellence across Neste, as part of the Processes, Data and IT Unit.

Join us and grow your career! You’ll have the opportunity to innovate, contribute your ideas, and play a meaningful role within our company. We’re committed to providing you with onboarding, guidance, and the support you need to succeed and build your future with us.

Your role during the summer

As a Summer Trainee, AI/ML Engineering, you will support the team in developing and delivering AI/ML solutions that help enhance core business processes. You’ll get hands-on exposure to real business challenges and learn how AI is applied in an industrial and global company environment.

During the summer you will:

• Support AI/ML development work across the lifecycle: data preparation, prototyping, model training, and validation

• Assist in building pipelines and APIs to integrate models into business operations

• Help with documentation and reproducibility (clear notebooks, version control, and solution descriptions)

• Participate in data quality checks and monitoring, helping ensure reliable model performance

• Collaborate closely with AI/ML engineers, analysts, and business stakeholders, learning how to translate needs into practical solutions

• Contribute to MLOps practices, such as basic CI/CD tasks, model packaging, deployment support, or retraining workflows (depending on your background)

What we're looking for:

Education & background:

• Currently studying or recently graduated in Computer Science, Data Science, Machine Learning, Statistics, or a related field

Technical skills

• Strong Python skills with hands-on experience working with data (pandas, Jupyter notebooks, etc.)

• Solid understanding of version control using Git

• SQL and basic data querying experience is a big plus

• Genuine interest in machine learning engineering and how models drive real business impact

Soft Skills

• Excellent communication skills in English, both written and verbal

• Ability to collaborate effectively with technical and non-technical colleagues alike

• Curious, proactive mindset with a readiness to take ownership of tasks

• Eager to learn how ML models are built, deployed, and integrated into production systems

Great to have (but not required)

• Familiarity with ML frameworks (e.g., PyTorch, TensorFlow)

• Some experience with cloud platforms (GCP / AWS / Azure) or tools like Vertex AI, SageMaker, Azure ML

• Interest or experience in GenAI, Agentic AI, RAG pipelines, or Large Language Models (LLM) based solutions (e.g., LangChain)

• Any exposure to CI/CD, Git workflows, testing, or software engineering best practices

• Interest in industrial use cases like supply chain, manufacturing, operations, or commercial planning

What’s in it for you?

• Neste summer trainees are valued and integral members of their teams

• Flexible working hours and possibility to work partly remotely depending on role

• Extensive self-study opportunities offered by our learning platform

• A chance to do voluntary work for one working day

• Access to our on-site gym located in Espoo, giving you the opportunity to stay active and energized

• Occupational health services and a leisure accident insurance 

The job is located in Keilaranta, Espoo, with excellent transport connections. Currently we work regularly at least three days a week at the office to ensure seamless collaboration and sense of belonging.

The position follows the collective agreement for senior salaried employees. If you are in the early stages of your studies, the minimum starting salary is 2350 EUR. Your salary will also depend on relevant work experience and, for students, the number of completed course credits. We welcome applications from both current students and those who have graduated after 1st January 2025. Please note that you must be at least 18 years old at the start of employment. The summer job typically takes place between May 1 and September 30, 2026.

Let’s get you started

We look forward to receiving your application by February 8th, 2026. Due to security and confidentiality, please submit your application through our recruitment system. Applications sent via email will not be considered.

We will screen applications and the selection can be made already during the application period. We will do our best to contact all the applicants latest on week 14. The recruitment process will include one or two interviews held by the hiring manager. In some cases, we may also use a video interview. By submitting an application, you give us permission to consider it for all applicable summer jobs 2026. A health check, including drug testing, will be conducted for individuals selected for certain roles. A possible security clearance is obtained with your consent.

If you have questions regarding the recruitment process, we answer them at summerwithneste@neste.com. Due to the large number of applications, we are not able to comment on individual jobs or applications. You’ll find tips and answers to frequently asked questions from here.

We hope to see you this summer!

Neste in brief

Neste (NESTE, Nasdaq Helsinki) creates solutions for mitigating climate change and accelerating a shift to a circular economy. The company is the world’s leading producer of sustainable aviation fuel (SAF) and renewable diesel, enabling its customers to reduce their greenhouse gas emissions. Neste refines waste, residues and other renewable raw materials to high-quality renewable fuels at its refineries located on three continents. The company’s annual renewable fuels production capacity will be increased to 6.8 million tons in 2027. 

Neste has high standards for sustainability and the company has consistently been recognized by several leading sustainability indices. In 2024, Neste's revenue stood at EUR 20.6 billion. Read more: neste.com