Human Resources Green Card Sponsorship Jobs in Colorado

Senior Software Developer

Central Denver, CO (Hybrid--3 days)

Duration: initial 6-month contract
Pay: $65-85/hr

We are seeking a skilled Software Engineer to design, develop, and maintain scalable, high-performance systems that support evolving business needs. This role requires strong full-stack capabilities, with a focus on backend services, APIs, integrations, and modern front-end development. The ideal candidate will also contribute to architectural decisions, system reliability, and engineering best practices across the team.

Key Responsibilities

• Design, build, and deploy scalable and high-performance software systems aligned with business objectives
• Develop server-side applications and services using modern .NET technologies (.NET 10 / .NET Core)
• Design, implement, and enhance APIs, event-driven architectures, and system contracts
• Build and maintain system integrations with a focus on data consistency, reliability, and minimizing data drift
• Develop and maintain user-facing applications using React and related front-end technologies
• Ensure solutions are optimized for deployment within containerized environments such as Kubernetes
• Evaluate system design choices with an emphasis on integration, scalability, and feasibility
• Implement and maintain observability solutions including monitoring, logging, and tracing
• Maintain high standards of code quality through code reviews, best practices, and configuration management
• Clearly communicate technical concepts, architecture decisions, and implementation details across teams
• Provide technical leadership by defining coding standards and guiding other developers
• Stay current with emerging technologies and recommend improvements where appropriate
• Contribute to continuous improvement in system design, development processes, and support practices
• Create and maintain detailed technical documentation as needed
• Collaborate closely with engineering teams and support personnel to resolve issues and improve systems
• Perform additional duties and responsibilities as assigned

Required Qualifications

• Strong understanding of software engineering principles, system design, data structures, and data modeling
• Experience with relational databases and best practices in data modeling
• Excellent problem-solving skills and sound business judgment
• Strong communication skills with the ability to explain technical concepts clearly to both technical and non-technical audiences
• Ability to build strong working relationships across teams and stakeholders
• Self-motivated, proactive, and capable of driving initiatives independently
• Adaptable and eager to learn new technologies and platforms
• Ability to interpret and follow written, verbal, and diagram-based instructions
• Comfortable communicating across all levels of an organization

Required Experience

• 4-5+ years of professional software development experience using .NET (Core or similar frameworks) or other modern object-oriented languages (e.g., Java, Go)
• Hands-on experience with React, Next.js, or similar modern front-end frameworks
• Experience designing and building distributed systems, including microservices and event-driven architectures
• Proven experience improving system observability, telemetry, and troubleshooting integration challenges
• Experience with automated testing frameworks, performance optimization, and QA practices
• Experience working with containerized applications and deploying to Kubernetes environments
• Experience with CI/CD pipelines using tools such as GitHub Actions, Jenkins, or TeamCity
• Experience deploying applications to cloud platforms such as AWS or Azure