Millennium is seeking a skilled Full Stack Developer (Backend/.NET) to build and support complex inbound and outbound integrations across corporate accounting, partnership accounting, and financial systems. The ideal candidate brings strong backend engineering expertise, with a primary focus on .NET technologies, and the ability to design resilient, scalable systems in a fast-paced, mission-critical environment.
Principal Responsibilities
- 5+ year of experience in designing, develop, and maintain robust backend services, APIs, and enterprise integrations using .NET (C#)
- Build and support applications and data interfaces using SQL Server and PostgreSQL
- Work with business and IT stakeholders to gather, interpret, and implement requirements
- Develop and maintain RESTful APIs and SOAP services to support financial close processes and accounting operations
- Execute the full Software Development Life Cycle (SDLC)
- Deploy and manage containerized workloads using Kubernetes
- Support event-driven architecture and messaging pipelines using Kafka
- Produce technical specifications and assess operational feasibility
- Integrate backend software components into fully functional enterprise systems
- Develop software verification plans and QA procedures
- Troubleshoot, debug, and enhance existing backend systems
- Ensure compliance with engineering standards and industry best practices
- Collaborate with frontend developers and cross-functional teams to deliver end-to-end solutions
- Help mentor junior developers and contribute to team best practices
Skills Desired
- Strong development experience in .NET (C#) and understanding of python.
- Experience building backend services, APIs, and enterprise applications using modern .NET (C#)
- Strong experience designing and managing UI applications using Angular
- Strong experience with Microsoft SQL Server and PostgreSQL, including complex SQL queries and stored procedures
- Experience with REST APIs and SOAP services
- Experience with GitHub, Jenkins, and JIRA
- Understanding of Lean/Agile and DevOps principles
- Strong written and verbal communication skills
- Ability to work effectively with senior stakeholders and cross-functional technology teams
- Ability to document technical requirements and specifications
- Proficiency with software engineering tools and development best practices
- Understanding of ML model integration and API-based AI service consumption
- Hands-on experience with AI coding assistants
