Freelance Simulation Software Engineer Jobs in Wisconsin

• Locations Belgium Poland United Kingdom France Netherlands

Division: Group Business Solutions (GBS)

Your career opportunity

Join our Group Business Solutions (GBS) division, where we design and sustain IT solutions for financial market securities. Be part of a dynamic, collaborative team in a fast-evolving environment, shaping the future of financial technology.

Ready to make an impact?

We’re seeking a skilled and proactive Expert Engineer eager to broaden their expertise and drive impactful improvements across our solutions. You’ll tackle complex problems and help shape our delivery, working in a collaborative environment that supports growth, fosters innovation and strengthens our alignment with business needs.

• Lead the design, architecture, and development of technical and functional solutions, owning complex features and collaborating with senior developers and cross‑functional teams to deliver robust, scalable systems. Provide expert input to technical decisions and support junior colleagues in resolving medium‑to‑high‑complexity issues.
• Contribute and actively shape ideation workshops by providing expert insights and recommending enhancements to improve product functionality and user experience.
• Drive the definition, estimation, and validation of complex technical requirements, proactively influencing planning accuracy and enabling predictable, high‑quality feature delivery across teams.
• Ensure the stability and reliability of production applications by independently leading technical investigations, implementing durable fixes, and guiding peers in troubleshooting.
• Lead the creation and improvement of design documentation for medium‑to‑high‑complexity changes, ensuring technical clarity and alignment with architectural standards while contributing to stronger design practices across the team.
• Drive the adoption and evolution of best practices and coding standards to ensure high code quality, while leading and contributing to continuous improvement initiatives across the team.
• Take ownership of applications (quality, support, evolution).
• Perform production support (including off‑hours when required).

What you need to have to succeed in this role:

• Hands‑on experience as a software engineer (at least 5 years).
• Advanced understanding of software related system designs and technology stacks.
• Solid knowledge of solution development and design principles.
• Ability to interpret business requirements, assess their technical implications, and help translate them into well‑scoped, practical technical solutions.
• Proactive in learning and expanding technical expertise, while contributing to team goals, engaging in cross‑functional projects, and supporting cloud migration efforts, AI integration, automation frameworks, Infrastructure as Code best practices and effective collaboration within and across teams.
• Strong command of English, both spoken and written.
• Hands‑on experience with tools/platforms such as:
• Mainframe: PL/I or Cobol, DB2, MQ, CICS.
• Nice to have:
  • Java / .NET / APIs / Integration.
  • Azure, Kafka, event‑driven architecture.
  • IntelliJ IDEA, Eclipse, JDK, Javac/Java commands, Maven, Gradle, IDE environments, JUnit, Git, Docker, CI/CD pipelines (Jenkins, GitHub Actions), Prometheus, Grafana, OpenTelemetry, VisualVM, JFR, Kubernetes, Azure Cloud, AWS, GCP, VPC/VNet, CLI, Visual Studio, Oracle, CSS, SSIS, APIs, MQ Series, Linux, Togaf, CoBit.

What makes you stand out:

• Strong analytical mindset and problem‑solving abilities.
• A strong sense of ownership and accountability in your work.
• Proactive attitude with a structured and solution‑oriented approach. Communicate clearly with technical and non‑technical stakeholders.
• Ability to collaborate effectively in a multicultural environment.
• Clear and effective communication skills with both technical and non‑technical stakeholders.
• Coaching and mentoring capabilities, with a willingness to support team growth.
• A continuous learning mindset and drive for improvement. Strong analytical mindset and problem‑solving abilities.
• Knowledge of Agile methodologies.

Work outside of business hours is sometimes required as launches in production are generally carried out after 5PM or on Saturday as well as watch duty during nights and weekends.

Please note that this is a permanent position, and we do not offer freelance or contract arrangements for this role.

Embark on your new adventure at Euroclear, and work at the heart of the global capital markets. We connect over 2,000 financial institutions across the globe. As an open and resilient infrastructure, we contribute to the stability of the financial markets. We help clients cut through complexity, lower costs, and mitigate risks of financial transactions. At Euroclear, we have the clear ambition to use our key role to facilitate and accelerate a sustainable global financial system.

What We Offer:

• Work closely with inspiring, supportive and engaged colleagues from more than 80 different countries.
• Practice your talents in a highly professional international environment.
• Join a learning and development environment with an emphasis on knowledge sharing and training.
• Competitive salary and comprehensive benefits.

Ways of working

Find your own optimal balance within our hybrid working model, where you can connect at the office 8 days a month and also benefit from remote working.

Great Place to Work for All

We are committed to creating an inclusive culture that celebrates diversity and strives to be a Great Place to Work for All. All qualified applicants will be considered for employment, regardless of any aspect that makes them unique (including race, religion, national origin, gender, sexual orientation, age, marital status, pregnancy, disability, ...). If you need any specific accommodation due to disability or any other reason, you can let the recruiter know during your application process. Our values guide how we work together and shape our future: Our mission and values - Euroclear.

The Group Business Solutions (GBS) division ensures the competitiveness of Euroclear by delivering reliable and sustainable IT solutions for the financial securities markets. Our technical teams deliver new IT solutions and improve existing applications for both our internal and external clients. We deploy changes into the production environment in a controlled and structured way that doesn't compromise production stability and we ensure applicative production support.