Senior Software Engineer

About the role

Teraswitch is seeking a Senior Software Engineer to own the design and delivery of high-performance backend systems that power our global infrastructure services. In this role, you will be responsible for building and maintaining the critical backend services and APIs that drive our customer portal, billing platform, and internal operational tooling. You will work directly with physical infrastructure and hardware integration layers, translating operational requirements into reliable software workflows. This position requires strong collaboration with infrastructure, operations, support, and product teams to ensure end-to-end system reliability and security. You will be expected to make impactful technical decisions that improve systems over time and mentor other engineers through guidance and code review. The role is backend-leaning but values engineers who understand the full user experience from API to interface. You will contribute to both new initiatives and mature systems, ensuring continuity and performance at global scale.

Key facts

What you'll do

• Design, build, and maintain backend services and APIs using C# and modern .NET, ensuring performance and scalability across global deployments.
• Drive the design and delivery of features and systems across customer-facing applications, billing workflows, and internal tooling with a focus on reliability and maintainability.
• Build application workflows and make sound technical decisions around integrations, data flow, real-time processing, and system resilience.
• Contribute to front-end applications in React and TypeScript, as well as internal applications built with Blazor, to support end-to-end feature delivery.
• Work with asynchronous, event-driven, and real-time application patterns to meet operational demands across distributed environments.
• Contribute to analytics and data workflows across transactional and high-volume systems, optimizing for accuracy and performance.
• Participate in production support and on-call responsibilities, including troubleshooting issues and improving operational readiness over time.
• Collaborate across engineering, operations, support, and other stakeholders to deliver practical, secure, and scalable software solutions.
• Mentor other engineers through technical guidance, constructive code review, and day-to-day collaboration to elevate team capabilities.
• Evaluate and implement modern engineering workflows including Git, CI/CD pipelines, testing strategies, and infrastructure as code practices.
• Partner with infrastructure and hardware teams to ensure software aligns with physical platform constraints and capabilities.
• Support compliance and security initiatives by implementing secure coding practices and integrating identity and billing platforms as needed.
• Explore and adopt containerized deployment patterns using Kubernetes, Helm, and GitOps to improve delivery reliability.
• Apply product-minded thinking to balance technical tradeoffs and optimize for both operator and user experience.

Requirements

• 5+ years of professional experience building production software with C# and modern .NET, demonstrating consistent delivery of reliable systems.
• Strong backend engineering fundamentals, including API design, data modeling, debugging techniques, performance optimization, and secure coding practices.
• Experience designing and building APIs and integrating with external systems, including handling authentication, versioning, and error management.
• Experience working with SQL databases, including schema design, query optimization, and understanding of transactional consistency.
• Ability to contribute across the stack, including front-end development in React and TypeScript, to support cross-functional feature teams.
• Familiarity with modern engineering workflows including Git, code reviews, testing frameworks, and CI/CD practices to support continuous delivery.
• Strong technical judgment and the ability to work effectively through ambiguity while making informed decisions under constraints.
• Comfortable collaborating across functions such as operations, support, and infrastructure, and exercising sound judgment in production environments.
• Willingness to participate in on-call rotations and production troubleshooting with a focus on root cause analysis and resolution.
• Commitment to maintaining high standards for code quality, documentation, and operational observability in all delivered solutions.

Nice to have

• Experience with distributed systems, messaging, asynchronous workflows, or real-time application patterns to support scale and resilience.
• Experience building applications with Blazor to leverage component-based UI development within the .NET ecosystem.
• Experience with analytics or high-volume data systems to support reporting and operational insights.
• Familiarity with containerized deployments and modern delivery practices, including Kubernetes, Helm, GitOps, and CI/CD pipeline automation.
• Experience with observability and production diagnostics, including logs, metrics, traces, and related tooling for proactive issue detection.
• Experience integrating with identity, billing, or other external platforms to streamline workflows and reduce integration friction.
• Exposure to infrastructure, hosting, cloud, or hardware-adjacent software systems to support close collaboration with operations teams.
• Experience working in environments with security and compliance expectations, including adherence to regulatory and organizational standards.
• Product-minded approach to engineering, with a demonstrated ability to translate user and operator needs into technical requirements.

Practical notes

• Location preference is given to full-time onsite candidates in Pittsburgh, PA.
• This is a full-time employment position with comprehensive benefits eligibility.
• Compensation details are not specified within the available source information.
• No visa sponsorship information, hours, or specific deadlines are provided in the source materials.