Senior Software Engineer Net Jobs in Springfield, MA

RCN Capital is a nationwide wholesale lender focused on helping real estate investors and independent mortgage brokers finance non-owner-occupied residential investment properties. We support a range of strategies including ground-up construction, fix-and-flip projects, and long-term rental financing through a streamlined process, dedicated teams, and a commitment to exceptional service.

We are seeking a Senior Full Stack Engineer to lead the design and development of next-generation financial and partner-facing platforms, including the Loan Origination System (LOS), Partner Ecosystem, and Sales Portal. This role is responsible for end-to-end delivery of modern, cloud-native applications using .NET 10, React, and TypeScript, with a strong emphasis on scalable architecture and high-quality engineering standards.

The ideal candidate brings a builder mindset for net-new development, combined with an innovation mindset to integrate AI-powered capabilities and agentic workflows into core business processes. This role will act as a technical leader within the Project Nexus ecosystem and serve as a bridge between onshore leadership and offshore delivery teams.

• Lead architecture and hands‑on development of modern web applications supporting LOS, Partner Portals, and Sales Platforms
• Design, build, and maintain React and TypeScript front‑end applications using modern patterns and state management
• Develop high‑performance backend services and APIs using C# and .NET 10 / .NET Core
• Design and implement AI‑powered features, including intelligent agents and automated document processing using Azure OpenAI Services
• Collaborate closely with offshore development teams, performing code reviews and providing architectural and technical guidance
• Design and implement cloud‑native architectures leveraging Azure services such as Functions, App Services, Service Bus, and serverless components
• Ensure secure‑by‑design coding practices, including authentication, authorization, and secrets management
• Support production systems and participate in design reviews, technical planning, and platform evolution initiatives

• Expert‑level React (Hooks, Context API) and TypeScript.
• Experience with modern state management (Redux/Zustand) and Tailwind CSS
• Deep proficiency in C# and .NET 10/Core.
• Experience with Entity Framework Core and high‑performance API design.

• Proven experience with LLMs (4th generation or newer), Prompt Engineering, and building RAG applications.
• Familiarity with LangChain or Semantic Kernel is a plus.

• Strong experience with Azure (App Services, AI Search, Key Vault) and Azure DevOps/GitHub Actions for CI/CD.

• Advanced PostgreSQL skills, including schema design, performance tuning, and NoSQL (CosmosDB) experience.

• Experience with AI / GenAI concepts, including LLMs, prompt engineering, or Retrieval‑Augmented Generation (RAG) patterns
• Familiarity with Azure OpenAI Services, LangChain, Semantic Kernel, or similar frameworks
• Experience with containerization and orchestration (Docker, Kubernetes)
• Exposure to NoSQL databases such as Cosmos DB
• Understanding of secure coding practices and regulated data environments

• 7+ years of professional software development experience
• At least 3 years operating in a Senior or Lead Engineer capacity
• Hands‑on experience building and supporting production‑grade, cloud‑native applications
• Experience collaborating with distributed or offshore development teams

• Building or modernizing partner portals or external‑facing systems
• Greenfield development of enterprise platforms
• Platforms that have evolved to incorporate AI‑assisted workflows

• Bachelor's degree in Computer Science, Software Engineering, Information Systems, or related field required
• Master's degree in Computer Science, Software Engineering, Information Systems, or related field preferred

• Other relevant cloud or software engineering certifications

• Full time
• Monday-Friday, 9:00AM to 6:00PM
• Hybrid work model with first 90 days onsite and 2 days/week in office after in either:
• South Windsor, CT
• Charlotte, NC

• Growth‑oriented environment with opportunities to expand your legal skill set
• Ongoing training and development
• Casual dress policy
• Free food and beverage program
• And many additional perks

Equal Opportunity Employer
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