Senior Software Engineer, Backend (Voice Platform)

Cresta CTO & co; Toronto; Remote; CAD 100,000 - 130,000; Full time

Job summary

A leading AI company in Toronto is seeking a Senior Software Engineer for their Voice Platform team. This role involves designing and operating backend systems that enhance contact center automation using AI. Candidates should have over 5 years of experience in backend development, particularly with Golang, and a strong understanding of distributed systems. The position also offers various employee benefits including health plans and a work-from-home stipend.

Benefits

Medical, dental, and vision plans

Paid parental leave

Monthly Health & Wellness allowance

Work from home office stipend

Lunch reimbursement

PTO: 3 weeks in Canada

Qualifications

• 5+ years of experience in backend system development.
• Expertise in Go or a similar systems language.
• Proven experience with scalable architectures using microservices.

Responsibilities

• Lead the design and development of scalable, distributed backend microservices.
• Own and evolve voice platform integrations with communication systems.
• Drive initiatives to expand platform capabilities including WebRTC integrations.

Skills

Golang

Distributed systems

Cloud infrastructure

Kubernetes

Docker

Real-time communication protocols

Education

Bachelor’s degree in Computer Science or related field

Job description

Overview

Senior Software Engineer, Backend (Voice Platform)

Cresta is on a mission to turn every customer conversation into a competitive advantage by unlocking the true potential of the contact center. Our platform combines the best of AI and human intelligence to help contact centers discover customer insights and behavioral best practices, automate conversations and inefficient processes, and empower every team member to work smarter and faster. Cresta is founded with leadership connected to Stanford AI Lab and leaders in the AI and contact center space.

Join us on this thrilling journey to revolutionize the workforce with AI. The future of work is here, and it\'s at Cresta.

About the role

At Cresta, the Voice Platform team is on a mission to transform real-time voice infrastructure and contact center automation through AI-powered backend systems. As a Senior Software Engineer on the Voice Platform team, you’ll be responsible for designing, scaling, and operating the distributed services that power Cresta’s voice ecosystem. You’ll drive major initiatives in areas such as SIP and WebRTC support, multilingual and translation pipelines, and real-time conversation intelligence. This role requires strong technical leadership, a passion for building reliable distributed systems, and the ability to collaborate across engineering and product teams to bring innovative features into production.

Responsibilities

• Lead the design and development of scalable, distributed backend microservices in Golang (with some Python for AI-related services).
• Own and evolve voice platform integrations with large-scale enterprise communication and contact center systems.
• Drive initiatives to expand platform capabilities, including bi-directional SIP, WebRTC integrations, multilingual support, advanced transcription, and real-time translation.
• Build systems that power conversation intelligence for both remote and in-person interactions.
• Improve observability, reliability, and self-service troubleshooting across the platform.
• Ensure performance, scalability, and resilience of real-time voice pipelines running in the cloud.
• Collaborate with cross-functional teams (ML, product, solution architects) to design end-to-end solutions for customer deployments.
• Provide technical guidance, mentorship, and best practices to other engineers on the team.

Qualifications We Value

• Bachelor’s degree in Computer Science or related field.
• 5+ years of experience in backend system development, distributed systems, or cloud infrastructure.
• Expertise in Go (or a similar systems language) with strong API and service design skills.
• Proven experience with scalable architectures using microservices, workflow orchestration, distributed caching, and cloud databases.
• Strong knowledge of Kubernetes, Docker, and modern cloud infrastructure.
• Solid understanding of networking, real-time communication protocols, and cloud security best practices.
• Demonstrated ability to lead complex technical projects from design through production.
• Bonus: experience with voice systems, telephony, or real-time media platforms.

Benefits

• We offer Cresta employees a variety of medical, dental, and vision plans, designed to fit you and your family\'s needs.
• Paid parental leave to support you and your family.
• Monthly Health & Wellness allowance.
• Work from home office stipend to help you succeed in a remote environment.
• Lunch reimbursement for in-office employees.
• PTO: 3 weeks in Canada.