Responsibilities
- Reverse engineer legacy monolithic and n-Tier .NET applications to understand architecture, business rules, data flows, and integration points
- Analyze poorly documented systems to extract functional and non-functional requirements
- Produce current-state architecture diagrams, data flow models, and dependency maps
- Identify technical debt, architectural anti-patterns, and modernization risks
- Design target state architectures to decompose monolithic systems into modular services, including microservices where appropriate
- Define modernization strategies, including strangler patterns, phased migrations, or parallel-run approaches, to minimize business disruption
- Lead refactoring initiatives to improve maintainability, scalability, and performance
- Analyze legacy database schemas, stored procedures, and embedded business logic to inform modernization decisions
- Support data migration and transformation strategies during system transition
- Translate complex legacy findings into clear documentation for technical and non-technical stakeholders
- Partner with business SMEs to ensure technical designs align with operational workflows and compliance requirements
Required Experience
- Advanced experience in reverse engineering legacy monolithic or n-Tier enterprise .NET applications
- Deep expertise in C# and the .NET ecosystem, including legacy .NET Framework (Web Forms, WCF, MVC) and modern .NET (.NET Core / .NET 6+)
- Experience within the Healthcare Payor domain, including claims adjudication, member enrollment, provider networks, benefits configuration, or utilization management
- Strong experience analyzing legacy database schemas and stored logic
- Demonstrated ability to identify technical debt and assess architectural risk
- Experience defining modernization strategies and making refactor vs. rebuild vs. re-platform decisions
- Proven ability to extract and document undocumented system behavior through code inspection, database analysis, and runtime evaluation
- Strong architectural communication skills and the ability to translate complexity for diverse stakeholders
Preferred Experience
- Understanding of regulatory and compliance requirements such as HIPAA, data privacy, and auditability
- Experience supporting large-scale modernization initiatives in regulated enterprise environments
Top Skills
What We Do
Doran Jones Inc. (DJI) is the leading financial services Data Engineering and Application Development firm, specializing in Capital Markets, Risk, and Regulatory Compliance. We are US-based, helping our clients fill gaps in capacity and expertise, reduce risk, and accelerate change. Our leaders average over 25 years of experience in Financial Services and Technology. DJI is repeatedly engaged by the largest and most complex clients for our Agile transformation expertise and practical understanding of the critical relationship between data, architecture, and application development. DJI has a mission to place more people from non-traditional backgrounds into sustainable technology careers. Through partnerships with non-profit technology programs in underserved communities and Veteran organizations, candidates transition from tech training programs into real IT careers at DJI. Our unique recruitment policy allows us to create exceptional teams, bringing a broad spectrum of experience to our company and creating anything but a traditional consulting firm. DJI is a wholly-owned subsidiary of McLaren Strategic Ventures, a private equity firm, that invests in start-ups and scale-ups. They provide a full range of highly trusted domain consulting, advisory services, and innovative technologies globally. Doran Jones is able to offer a broad range of technology, deeper AI and machine learning tools, data intelligence, alternative resourcing capabilities, and capital access to invest and digitize at scale. Our clients benefit from this unique portfolio allowing them to accelerate the pace of their own digital transformations through innovative products and services designed around industry-wide issues.





