Lead Application Engineer - Commercial & Origination Portfolio

We're looking for a Lead Application Engineer – Commercial & Origination Portfolio to join our team in Lausanne, Switzerland, in an on-site working mode. You will support a major European company across more than 10 countries. The project brings the client’s application services under one managed services partner, covering both production operations (Run) and change delivery (Build).

As Lead Application Engineer you will shape the architecture of customer-facing sales, origination and contract pricing applications, built on both custom code and SaaS solutions. You will work closely with agile delivery teams across Switzerland, Spain and India and align technical direction with the client’s commercial goals. The role follows business hours, with extended support around releases, go-lives and market deadlines.

Responsibilities
Act as senior technical reference for the commercial and origination application portfolio
Define and govern application architecture and technology choices in line with client design principles
Support Build and Run teams in managing priorities and quality
Build and mantain relationships with senior client stakeholders across IT and commercial leadership
Ensure technical governance through design reviews, standards adherence and technical debt management
Support business cases for portfolio investments with effort, risk and option analysis
Manage escalations for high-impact incidents and delivery risks within the portfolio
Requirements
Extensive experience (10+ years) in application engineering or solution architecture
Strong background in energy markets and trading applications
Experience guiding or coordinating Build and Run activities, acting as a technical reference for the team
Expertise in solution, application and integration architecture
Practical knowledge of AWS, web services and modern web/backend stacks
Strong stakeholder management and technical governance skills in an outsourced delivery model
Bachelor’s or Master’s degree in Computer Science, Engineering or a related field
Fluent English, with French or German strongly preferred
Nice to have
Experience with SaaS integration
Hands-on experience with full-stack JavaScript or Python
Familiarity with risk and pricing applications