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Senior Systems Architect 5/31/2018

Aon Bloomington, MN

Bloomington, MN
AJE Ref #
Job Classification
Full Time
Job Type
Company Ref #
Mid-Career (2 - 15 years)
Bachelors Degree


Job Family US-MN-Bloomington


Aon is looking for a Senior Systems Architect

As part of an industry-leading team, you will help empower results for our clients by delivering innovative and effective solutions supporting our Enterprise Application Architecture organization within Risk Business Technology (RBT) in our Bloomington, Minnesota office.

Job Summary:

It s an exciting time to be at Aon! We are seeking a motivated and innovative Senior Systems Architect who partners with the project manager and business analyst assigned to the project to ensure what is being developed conforms to enterprise goals and standards for the organization.

Your impact as a Senior Systems Architect

Core Responsibilities:

* Acquire expertise and deep knowledge of the software libraries supported by the EA team

* Acquire expertise and deep knowledge of the shared application and REST API services supported by EA team

* Participate in domain analysis exercises to design class models for specific problem domain

* Participate in sessions to help / guide other development teams

* Conduct research and development to produce PoC solutions for specific cases

* Collaborate with EA team members to create technology talks on targeted topics to help educate Aon Benfield s development community

* Collaborate with Operations teams for deployment of solutions maintained by EA team

Identity and Access Management

* Development of features to support Identity and Access Management Service in support of claims-aware applications which consume the platform

* Provide education and guidance for application development teams who are interested in off-loading IAM responsibilities from their corresponding applications

* Participate in domain analysis exercises to discover implementation approach

* Maintain components, libraries, and services to conduct full cycle of IAM

* Conduct research and development to produce PoC solutions for specific cases

* Collaborate with Application Development team members to implement claim-aware application security

* Collaborate with Operations teams for deployment of solutions maintained by IAM Service team

You Bring Knowledge and Expertise


8+ years of experience with the following:

* Experienced working with a Software-Architect mind set

* Must be able to navigate ambiguity and ask for help if uncertain of next steps

* Experience collaborating with and articulating project status to stakeholders (i.e. PM and Product Managers

* Undrstand difference between procedural code vs. object-oriented (data & behavior)


* C# Expert

* Correct use of Async / Wait, OOP

* Understand and apply Clean Code practices

* Understand and apply Code Refactoring practices

* Experience conducting or participating in code reviews

* Experience publishing NuGet components

* Experience implementing software components server-side

* Experience with Microsoft SQL Server 2014/16, RDBMS, T-SQL and Stored Procedures, and creation and interpretation of ERD diagrams

* Understand application patterns

* Dependency Injection

* Registering / Resolving / Releasing objects

* Experienced with containers, scopes, singletons, per-request and other options

* Understand anti-pattern avoidance

* Autofac / Ninject experience (preferred)

* Inversion of Control

* Separation of Concerns

* Repository pattern


* Experienced in Unit Testing and Mocking

* Moq framework (preferred)

* Understand the 3 A s of unit testing

* Experienced in Integration Testing

* Able to articulate, clearly, correctly the difference between Unit Testing and Integration Testing

* Understand (i.e. can read / draw) UML diagrams

* Experience with Identity and Access Management concepts

* SALM Assertions (SAML 2.0)

* OAuth 2.0

* OpenID Connect

* WS-Federation

* Claims-Aware applications

* Identity Federation

Preferred Experience:

* Knowledge on CLSA, Autofac, Moq and Entity Framework a plus

* Past experience in invoicing, accounting or finance related software applications

* Knowledge of insurance/reinsurance fundamentals a major plus

* Active Directory Federation Services 3.0 or above is a plus

* Thinktecture s Authorization Server is a plus

* Experience with Okta and/or Net IQ is a plus


* BA/BS degree in Computer Science or related software engineering field, or equivalent practical experience

Aon provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, creed, sex, sexual orientation, gender identity, national origin, age, disability, veteran, marital, or domestic partner status. Aon is committed to a diverse workforce and is an affirmative action employer.


Aon plc (NYSE:Aon) is a leading global professional services firm providing a broad range of risk, retirement and health solutions. Our 50,000 colleagues in 120 countries empower results for clients by using proprietary data and analytics to deliver insights that reduce volatility and improve performance.

Company Size:
50,000+ Employees
Financial Services
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200 East Randolph
Chicago, IL 60601

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