Lead Software Developer

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 15,000 experts across the Nordics and Baltics. Join us to create the future Posti!

TechHub drives technology, software development and agile excellence across Posti Group, helping our businesses build customer value faster. Our development teams build Posti's online services and channels and shape how we work.

We're looking for a Lead Software Developer to strengthen our AI competence in Posti's business operations. Additionally, you'll build high-quality backend services with Python and AWS, work closely with product owners and domain owners, and have an impact that reaches beyond a single team.

You might be the right fit if you have:
Hands-on experience applying AI to real business operations, beyond hobby and PoC projects
Solid experience on the backend side with Python and AWS
Genuine curiosity about new AI technologies, libraries and best practices in the area
Experience across the full SDLC
Experience leading the technical direction, representing engineers, and making architectural decisions and tradeoff calls


Bonus points for: LiteLLM, RAG, AWS Bedrock, AWS CDK, production LLM work, or order management systems.

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 2026. 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, 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. Our office is located in Postitalo, Helsinki city centre, however we also do provide the opportunity to work remote.

Is this your next career move? Please leave your application by 14.10.2026 via Posti's recruitment system. 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!