Job Description

We are looking for a senior Application Quantitative Developer to take technical ownership of an internal pricing platform used for pricing and structuring industrial-scale electricity procurement products, including long‑term PPAs.

In essence, this position is about managing and developing a business‑critical application that brings together quantitative pricing models, energy market data and user‑facing workflows to support daily decision‑making by Portfolio Management, Pricing, Sales and Product Management. The platform is developed primarily in Python and is continuously evolving as new pricing products and methodologies are introduced.

This role sits at the intersection of quantitative modelling, application development and energy market understanding. It is not a generic software engineering position, but a domain‑driven role focused on making quantitative pricing models robust, usable and reliable in operational use. In addition to application development, you will also participate in production development by converting business requirements into actionable implementation tasks.

About the role

As Application Quantitative Developer – Pricing Platform, you will:

• Take technical ownership of the application, including its codebase, structure and documentation
• Develop, maintain and evolve the application to support new and existing pricing products
• Work closely with pricing quants to translate pricing logic into reusable, auditable and operational application components
• Ensure robustness, traceability and consistency of pricing results across products and use cases
• Participate in product implementation by defining necessary data sources, user inputs and key results
• Support users and stakeholders
• Uphold high standards regarding documentation, architecture and code quality and share knowledge with other developers

About you

We are looking for a person who combines strong technical skills with sound judgement and domain curiosity

You bring:

• Strong Python development skills in quantitative or analytical environments
• Experience working with and maintaining long‑lived internal applications or large codebases
• Experience from relational databases, cloud services (preferably AWS), containers, infrastructure-as-code and CI/CD pipelines
• Ability to structure code for robustness, readability and long‑term maintainability
• An interest in, or understanding of, energy markets, pricing or risk‑driven decision‑making
• The ability to think in terms of systems and downstream effects, not just local code changes
• A practical, ownership‑oriented mindset and ability to work independently

It is an advantage if you have experience with:

• Pricing, risk, trading or asset‑based modelling
• Energy markets, electricity pricing or PPAs
• Testing practices, version control and documentation in analytical applications

We offer you

The possibility to bring your strong technical and mathematical background to deliver a real impact in decarbonising Europe.
At Fortum, we believe in a better future and want to be involved in shaping it. Our workplace is a safe place, both physically and mentally. You will grow with professional colleagues, being trusted and free to challenge yourself. We offer comprehensive benefits, flexible working hours, and hybrid work model to support your productivity, development and wellbeing. We are committed to build diverse teams where everyone feels included and is treated equally.

More information about our culture and benefits can be found here

Interested?
Submit your application by 17.04.2026 at the latest. If you would like to hear more about the position, please contact Jussi Makela through e-mail Jussi.Makela@fortum.com.

To be selected for the position, the applicant must go through background clearance and a health examination.

We are Fortum
Fortum is a Nordic energy company. We generate and deliver reliable energy to our customers and the Nordic energy system while at the same time helping industries decarbonise their processes and grow. Our core operations comprise efficient and best-in-class low-carbon power generation, customer services, and heating and cooling. Fortum’s power generation is already 99% from renewable or nuclear sources with one of the lowest specific CO2-emissions in Europe. We are guided by our ambitious SBTi-validated emission reduction targets on our way towards net-zero by 2040. For our ~4,500 employees, we commit to be a safe and inspiring workplace. Fortum's share is listed on Nasdaq Helsinki. fortum.com