Application Architect

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Accept all cookies Decline all non-necessary cookies Application Architect (.Net)

About This Role

We are seeking a highly experienced Application Architect to lead the design and development of a scalable, secure, and high-performance API ecosystem that integrates with accounting systems, banking platforms, and financial services. The ideal candidate has deep expertise in C#/.NET Core, API architecture, ISO 20022, and financial data exchange, with a strong understanding of Hedge Fund and Private Equity workflows.

As an Application Architect, you will define the system architecture, ensure best practices for API development, oversee integrations with fund accounting systems, payment processors, and financial institutions, and drive security, performance, and compliance standards.

Key Responsibilities

• Define and implement a robust API architecture that enables seamless integration with accounting platforms (QuickBooks, NetSuite, SAP, Microsoft Dynamics 365, Oracle Financials) and banking APIs.
• Develop and maintain scalable, event-driven architectures for financial transaction processing, ensuring high availability and fault tolerance.
• Design and optimize API Gateway solutions for authentication, security, and traffic management.

Financial System & Banking Integrations

• Architect integrations with banking APIs (SWIFT, ACH, SEPA, FedNow, RTP, Open Banking) and payment processors (Plaid, Stripe, Wise).
• Ensure compliance with ISO 20022 messaging standards, including pain.001, pain.002, camt.053, and pacs messages.
• Oversee fund accounting integrations, supporting workflows like capital calls, waterfall distributions, reconciliations, and investor reporting.
• Design robust data synchronization mechanisms between internal systems and third-party financial platforms.

• Define security best practices for API authentication using OAuth 2.0, OpenID Connect, JWT, and API key-based access.
• Ensure data integrity and security by implementing encryption (TLS, AES) and API rate-limiting strategies.
• Oversee compliance with ISO 20022, PCI-DSS, PSD2, GDPR, SOC 2, and other financial data regulations.

Technical Leadership & Collaboration

• Lead a team of API developers and engineers, defining development best practices and reviewing code architecture.
• Collaborate with product managers, DevOps teams, and financial partners to align API architecture with business objectives.
• Optimize system performance, scalability, and resilience, implementing caching, database tuning, and event-driven patterns.

Essential Requirements:

• 7+ years of experience in software architecture, API design, and financial system integrations.
• Expert-level proficiency in C#/.NET Core, with experience in designing and implementing scalable backend services.
• Strong expertise in RESTful API design, GraphQL, Webhooks, and API Gateway technologies (e.g., Azure API Management, AWS API Gateway, Kong, Apigee).
• Experience integrating with accounting and financial software (QuickBooks, NetSuite, SAP, Microsoft Dynamics 365, Oracle Financials).
• Hands-on experience with ISO 20022 financial messaging standards and banking APIs.
• Deep knowledge of asynchronous programming, event-driven architectures (Kafka, RabbitMQ, Azure Service Bus), and microservices.
• Experience with cloud computing (Azure, AWS, or GCP), CI/CD pipelines, and containerization (Docker, Kubernetes).
• Strong database expertise in SQL Server, PostgreSQL, MySQL, and NoSQL databases (MongoDB, Cosmos DB).
• Strong analytical and problem-solving skills, with experience in performance tuning and system optimizations.

Desirable skills

• Experience working with Hedge Funds, Private Equity firms, or Fund Administrators.
• Knowledge of portfolio accounting and fund administration platforms (e.g., Addepar, Geneva, Eze, Investran, eFront, Allvue, Black Mountain).
• Experience with real-time payments (RTP), FedNow, or Open Banking APIs