Your responsibilities, Identify, prioritize, and implement solutions for impactful cross‑cutting concerns such as reliability, scalability, security, developer experience, and customer experience., Strengthen shared platform components and libraries in a mature codebase, balancing pragmatic improvements with long-term architectural evolution in close collaboration with product engineers., Improve testing practices and quality assurance across the platform—whether through better test frameworks and data management, contract testing for service boundaries, or strategies that make legacy code more testable without requiring full rewrites., Modernize deployment practices and infrastructure as the platform migrates from Service Fabric to AKS, improving reliability and release velocity for a production system serving millions of invoices., Raise engineering quality through pair programming, thoughtful code reviews, and clear technical communication., Collaborate closely with engineers across the team to promote best practices, knowledge sharing, and consistent architectural patterns.

Experience as a senior engineer working in cloud‑native Azure and .NET environments., Proven track record of improving engineering effectiveness in areas such as throughput, stability, observability, and developer experience., Strong proficiency in C#, .NET, and Azure services, Ability to analyse systemic problems and design robust abstractions rather than localized fixes., Strong collaborative mindset, with experience in pair programming, mentoring, and driving technical alignment., Excellent communication skills and fluency in English for effective cross‑team collaboration.

This is how we work, in house, you focus on a single project at a time, you have influence on the choice of tools and technologies, you have influence on the technological solutions applied, you have influence on the product, you focus on product development, agile

work-organization-team-members

Team members, backend developer, data scientist

This is how we work on a project, architect / technical leader support, documentation

Development opportunities we offer, industry-specific e-learning platforms, intracompany training, substantive support from technological leaders, technical knowledge exchange within the company

What we offer, International environment with Swedish working culture, Spacious office near Rondo Grzegórzeckie in a unique building (no open spaces), Equipped kitchen with all things that help (tea, coffee, milk, Nutella, etc.), Support for professional development through a variety of initiatives to foster growth and clear career progression within a dynamic global culture, Additional 1 day off for your birthday (B-Day), Multikafeteria program, private healthcare (LuxMed), life insurance, Integration Parties (Summer Party, Xmas Party, Game Board Party, and other spontaneous events), Team building budget, Hybrid working model

Benefits, sharing the costs of sports activities, private medical care, sharing the costs of professional training & courses, life insurance, remote work opportunities, flexible working time, fruits, integration events, corporate library, no dress code, coffee / tea, drinks, parking space for employees, leisure zone, employee referral program

additional-module

Our values, Connect: We believe in the power of people, both individually and collectively. Our success is driven by respect and understanding, with a shared commitment to empowering finance teams of the future., Question: We embrace challenges and value diverse perspectives. By questioning and collaborating, we unlock better solutions and continuously innovate., Own: We are proactive, decisive, and committed to delivering results. We anticipate customer needs and follow through, earning their trust to focus on what they do best.

Medius Poland Sp. z o.o, Medius is a global company that provides cloud-based that helps businesses manage their invoices and payments more easily. The company provides software that automates tasks like approving invoices, tracking expenses or paying suppliers., , Medius's solutions are used by over 500,000 unique users across 116 countries, highlighting its extensive global reach and the widespread adoption of its spend management tools., , The company employs over 750 people and serves more than 4,000 customers worldwide. These customers collectively manage over $200 billion in spending each year using Medius's solutions.

About the project

The Capture team at Medius processes millions of invoices through a cloud‑native platform built on Azure. As a Senior Platform Engineer, you will play a key role in shaping the application platform that underpins the product. You will work directly in the product codebase, building frameworks, abstractions, and cross‑cutting capabilities that improve reliability, scalability, security, and developer experience. Success in this role means elevating the engineering effectiveness of the entire team and strengthening the platform foundations that enable Capture to deliver a world‑class product experience.

This is how we work on a project, architect / technical leader support, documentation

work-organization-team-members

Team members, backend developer, data scientist

additional-module

Our values, Connect: We believe in the power of people, both individually and collectively. Our success is driven by respect and understanding, with a shared commitment to empowering finance teams of the future., Question: We embrace challenges and value diverse perspectives. By questioning and collaborating, we unlock better solutions and continuously innovate., Own: We are proactive, decisive, and committed to delivering results. We anticipate customer needs and follow through, earning their trust to focus on what they do best.

About the project

The Capture team at Medius processes millions of invoices through a cloud‑native platform built on Azure. As a Senior Platform Engineer, you will play a key role in shaping the application platform that underpins the product. You will work directly in the product codebase, building frameworks, abstractions, and cross‑cutting capabilities that improve reliability, scalability, security, and developer experience. Success in this role means elevating the engineering effectiveness of the entire team and strengthening the platform foundations that enable Capture to deliver a world‑class product experience.

Your responsibilities

• Identify, prioritize, and implement solutions for impactful cross‑cutting concerns such as reliability, scalability, security, developer experience, and customer experience.
• Strengthen shared platform components and libraries in a mature codebase, balancing pragmatic improvements with long-term architectural evolution in close collaboration with product engineers.
• Improve testing practices and quality assurance across the platform—whether through better test frameworks and data management, contract testing for service boundaries, or strategies that make legacy code more testable without requiring full rewrites.
• Modernize deployment practices and infrastructure as the platform migrates from Service Fabric to AKS, improving reliability and release velocity for a production system serving millions of invoices.
• Raise engineering quality through pair programming, thoughtful code reviews, and clear technical communication.
• Collaborate closely with engineers across the team to promote best practices, knowledge sharing, and consistent architectural patterns.

Our values

• Connect: We believe in the power of people, both individually and collectively. Our success is driven by respect and understanding, with a shared commitment to empowering finance teams of the future.
• Question: We embrace challenges and value diverse perspectives. By questioning and collaborating, we unlock better solutions and continuously innovate.
• Own: We are proactive, decisive, and committed to delivering results. We anticipate customer needs and follow through, earning their trust to focus on what they do best.

Benefits, sharing the costs of sports activities, private medical care, sharing the costs of professional training & courses, life insurance, remote work opportunities, flexible working time, fruits, integration events, corporate library, no dress code, coffee / tea, drinks, parking space for employees, leisure zone, employee referral program

additional-module

Our values, Connect: We believe in the power of people, both individually and collectively. Our success is driven by respect and understanding, with a shared commitment to empowering finance teams of the future., Question: We embrace challenges and value diverse perspectives. By questioning and collaborating, we unlock better solutions and continuously innovate., Own: We are proactive, decisive, and committed to delivering results. We anticipate customer needs and follow through, earning their trust to focus on what they do best.

Medius Poland Sp. z o.o, Medius is a global company that provides cloud-based that helps businesses manage their invoices and payments more easily. The company provides software that automates tasks like approving invoices, tracking expenses or paying suppliers., , Medius's solutions are used by over 500,000 unique users across 116 countries, highlighting its extensive global reach and the widespread adoption of its spend management tools., , The company employs over 750 people and serves more than 4,000 customers worldwide. These customers collectively manage over $200 billion in spending each year using Medius's solutions.

About the project

The Capture team at Medius processes millions of invoices through a cloud‑native platform built on Azure. As a Senior Platform Engineer, you will play a key role in shaping the application platform that underpins the product. You will work directly in the product codebase, building frameworks, abstractions, and cross‑cutting capabilities that improve reliability, scalability, security, and developer experience. Success in this role means elevating the engineering effectiveness of the entire team and strengthening the platform foundations that enable Capture to deliver a world‑class product experience.