Senior Software Engineer, Backend (Voice Platform)

Toronto - Canada

Monthly Salary: Not Disclosed

Posted on: 14-09-2025

Vacancies: 1 Vacancy

Job Summary

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. Born from the prestigious Stanford AI lab Crestas co-founder and chairman is Sebastian Thrun the genius behind Google X Waymo Udacity and more. Our leadership also includes CEO Ping Wu the co-founder of Google Contact Center AI and Vertex AI platform and co-founder Tim Shi an early member of Open AI.

Join us on this thrilling journey to revolutionize the workforce with AI. The future of work is here and its 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 youll be responsible for designing scaling and operating the distributed services that power Crestas voice ecosystem.
Youll 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 ofscalable distributed backend microservicesin Golang (with some Python for AI-related services).
Own and evolvevoice platform integrationswith large-scale enterprise communication and contact center systems.
Drive initiatives to expand platform capabilities includingbi-directional SIP WebRTC integrations multilingual support advanced transcription and real-time translation.
Build systems that powerconversation intelligencefor both remote and in-person interactions.
Improveobservability reliability and self-service troubleshootingacross the platform.
Ensureperformance scalability and resilienceof 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:

Bachelors degree in Computer Science or related field.
5 years of experiencein backend system development distributed systems or cloud infrastructure.
Expertise inGo(or a similar systems language) with strong API and service design skills.
Proven experience withscalable architecturesusing microservices workflow orchestration distributed caching and cloud databases.
Strong knowledge ofKubernetes Docker and modern cloud infrastructure.
Solid understanding ofnetworking real-time communication protocols and cloud security best practices.
Demonstrated ability tolead complex technical projectsfrom design through production.
Bonus: experience withvoice systems telephony or real-time media platforms

Perks & Benefits:

We offer Cresta employees a variety of medical dental and vision plans designed to fit you and your familys 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

Compensation for this position includes a base salary equity and a variety of benefits. Actual base salaries will be based on candidate-specific factors including experience skillset and location and local minimum pay requirements as applicable. We are actively hiring for this role in the US and Canada. Your recruiter can provide further details.

We have noticed a rise in recruiting impersonations across the industry where scammers attempt to access candidates personal and financial information through fake interviews and offers. All Cresta recruiting email communications will always come from the @ outreach claiming to be from Cresta via other sources should be ignored. If you are uncertain whether you have been contacted by an official Cresta employee reach out to

Required Experience:

Senior IC