Full Stack Software Engineer

Waste Connections is seeking a Full Stack Software Engineer tobuildand support scalable enterprise applications, with a strong focuson backend servicesforconversational and voice AI.Applications consist of backend services, APIs, integrations, and modern web interfaces to deliver AI-powered and customer-facing solutions. The ideal candidate is comfortable owning work end-to-end, from design through productionandsupport. Key Responsibilities Design, build,and support cloud-native solutions in AWSusing secure and scalable architecture patterns. Develop backend microservices that power conversational and voice AIapplications. Build modern userinterfacesthat create a positive customer experience Integrate applications with third-party APIs, SaaS platforms, telephony,andCCaaS/CPaaS platforms. Work with key components of voice AI applications, such asstreaming audio, barge-in handling, retries, fallbacks, and transcript capture. Develop as part of an Agile team, utilizingCI/CD, automated testing,andIaC templates. Implement logging, metrics, alerting, and health checks to keep production services observable and reliable. Troubleshoot applicationand infrastructure issues across the stack. Qualifications 5-8 years of professional software development experienceusing .NET, C#, and Python Bachelor's degree in Computer Science, IT, or related field - or equivalent work experience. Strongunderstanding of REST APIs, microservices, and application integration patterns. Experience with cloud services and container-based deployments(AWS-preferred). Experience with agentic AI development tools and frameworks. Proficiency with at least one relational databasetechnology. Experience with React and/or Angular, TypeScript, and modern frontend tooling. Familiarity with GitHub Actions or comparable CI/CD tooling and automated testing practices. Experience with conversational or voice AI systems (e.g. streaming audio, turn-taking, LLM orchestration). Familiarity withvoice AIevaluationmetrics andframeworks Disciplined approach to security and compliance, including handling of PII, customer account data, secrets, least privilege, auditability, and PCI-sensitive boundaries. Successful candidates will demonstrate the ability to deliver reliable, scalable, and maintainable solutions while collaborating effectively across technical and business teams. Waste Connections is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to disability or protected veteran status. Waste Connections