Junior AI Developer - Posti Oy - Helsinki, Finland

We at Posti take care of a smoother flow of everyday life for you, companies and society while building a more sustainable future for us all with a diverse pool of professionals from mail deliverers and warehouse workers to artificial intelligence experts. As a large company, the range of possibilities we offer is huge – also internationally. Overall, we have 13,000 experts across the Nordics and Baltics. Join us to create the future Posti! Are you excited about building real AI solutions that make a visible impact on the physical world? We are seeking a Junior AI Developer to join our AI, Data Science & Online Analytics Team in a full-time, one-year fixed-term role. Our team delivers AI-driven analytics and intelligent automation solutions across Posti’s logistics and digital services - including mail, parcels, warehousing, and freight. In this role, you will contribute to real AI projects that support our operations and customers. Your work may involve building predictive models, experimenting with Generative AI and large language models, optimizing logistics through machine learning, or developing intelligent decision-support systems. This is a unique opportunity to see how a large international delivery and fulfillment company applies AI on a scale - powered by massive datasets, a modern tech stack, and strong mentorship. Key responsibilities: - Explore and analyze large datasets from real operational systems. - Develop and evaluate AI and machine learning models, including LLM-based and predictive models. - Prototype, test, and deploy solutions using modern MLOps and development practices. - Work alongside data scientists, ML engineers, and business specialists. - Share your results and insights with stakeholders and our data community. To succeed in this position, we hope that you have: - Curiosity, problem-solving mindset, and passion for AI & data. - Recently graduated or final-year studies in data-related fields (e.g., computer science, statistics, physics, mathematics, economics). - Interest or experience in machine learning & data analysis, python (pandas, numpy, scikit-learn, etc.), generative AI or LLM frameworks (Hugging Face, prompt engineering, RAG) - a plus, not required, SQL and cloud platforms (e.g., AWS, Databricks, Spark/PySpark, Sagemaker) & data visualization and communication. - Strong communication skills and willingness to collaborate. - Fluent spoken and written English and Finnish language skills. Why should you join us? With us, you will be part of a company whose operations impact the daily lives of millions of people. We have grown into an international logistics expert that employs around 13,000 people in the Nordic and Baltic countries. We are constantly developing new technology, and we are pioneers in our industry in building a more sustainable future: we have set the ambitious objective of operating fossil-free by 2030 and be on net-zero what comes to our emissions by 2040. We promote a diverse and inclusive work environment. All our managers undergo Caring Leader training, and together, we are building a caring work culture. Our dedication to supporting mental well-being at work has also been acknowledged with the Mental Health Friendly Workplace® label in 2025. With us, you will also have an excellent opportunity to develop your career and skills through diverse tasks, development projects, and training programs. As part of our employee benefits, we offer comprehensive occupational healthcare through Mehiläinen, Epassi benefits for culture, sports, and commuting, an excellent gym at our Ilmala office, and lunch at a discounted staff rate. You will also get to participate in events offered by the Posti Group’s occupational well-being foundation, such as wellness courses, concerts, sports events and amusement park days. We work according to our hybrid model, both in the office of Helsinki city center, Postitalo and remotely. For more information about this position, please contact Chapter Lead, Heikki Pulkkinen (+358414377542) on Monday 27.7.2026 between 10.00 and 11.00. The recruitment process is as follows: 1. Phone discussion with the hiring manager 2. Interview with the hiring manager (Teams) 3. Second interview with the hiring manager & team (face-to-face) 4. Final meetings with top candidates 5. Job offer Is this your next career move? Please submit your application by 9.8.2026 via Posti’s recruitment system. We will start interviews during the application period, and the position will be filled as soon as a suitable candidate is found. We value diversity, equity, and inclusion in our work community. We encourage applicants of different ages and genders, as well as persons belonging to linguistic, cultural, or other minorities to apply. We hope to hear from you soon! Our common values – reliable, respectful, progressive - guide everything we do. Read more! We are Posti, a versatile, modern, and international logistics expert with 400 years of experience. Today, we foster connections between people and companies by delivering information, emotions, and goods with 13,000 experts across the Nordic and Baltic countries. We take care for smoother flow of everyday life for you, companies and society while building a more sustainable future for us all. We are building evolving and customer-centric Posti with a diverse pool of professionals from mail deliverers and warehouse workers to digital business developers and artificial intelligence experts. As a big company, the range of possibilities we offer is huge – also internationally. Join us to create the future Posti!