Lead Software Developer

Posti Group Oyj; Helsinki; Hybrid; EUR 90,000 - 120,000; Full time

Benefits offered by this job

Occupational healthcare (Mehiläinen)

Epassi benefits

Discounted staff lunch

Wellness programs

Well-being events

Job summary

Posti Group Oyj is seeking a Lead Software Developer to strengthen AI capabilities and build scalable backend services using Python and AWS. You will collaborate with product owners and domain experts and help steer the technical direction across teams.

The role emphasizes real-world AI integration, full SDLC involvement, and leadership in architectural decisions, with flexibility for remote work from Helsinki or nearby locations.

Qualifications

• Hands-on experience applying AI to real business operations.
• Backend development proficiency with Python and AWS.
• Experience across the full SDLC, from design to deployment.
• Experience leading technical direction and making architectural tradeoffs.

Responsibilities

• Build high-quality backend services with Python and AWS.
• Collaborate with product owners and domain owners to shape solutions.
• Lead technical direction, architecture decisions and tradeoffs.
• Contribute to strengthening Posti's AI competence and delivery.

Skills

AI in business

Backend development

Team leadership

SDLC experience

Tools

Python

AWS

ML libraries

Job description

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 deliverersand 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!

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 CloudFormation, 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.

We hope to hear from you soon!

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.

Our common values – reliable, respectful, progressive - guide everything we do. Read more!