Senior Software Engineer, Backend - Platform Team

Role Description

Cresta’s Core Platform underpins the company’s entire product portfolio. Our long-term vision is to build a robust, reliable, secure, and extensible foundation that supports continued innovation, satisfies enterprise customer requirements, and keeps operational costs in check. Two critical components for that are agent assist backend services and scalable authentication systems, tools, processes, and frameworks based on industry standards and security best practices.

This role is focused on building various backend systems needed to enable successful customer integrations:

• Enable agent assist integration for chat and email, working with the frontend platform team, ML teams, infra team, and other backend services.
• Expand our backend agent assist services to meet customer requirements and feature requests.
• Address any customer issues that block integrations, affect user experience, or system performance.
• Work with the auth and security team to meet Cresta’s diverse authentication and security needs for internal workflows and external customer-facing integrations.

We are looking for strong versatile backend engineers who want to work at the intersection of distributed systems, real-time communication, enterprise integrations, and IAM systems.

Qualifications

• Bachelor’s degree in Computer Science or related field.
• 5+ years of experience building scalable backend systems in production environments.
• Strong experience designing and maintaining robust APIs (REST, gRPC).
• Solid understanding of distributed systems and real-time communication architectures.
• Experience integrating with third-party enterprise platforms and APIs.
• Experience working with CCaaS platforms or contact center systems is a strong plus.
• Familiarity with AI Agents, Virtual Agents, or LLM-based systems is a plus.
• Experience with containerized environments (Kubernetes, Docker).
• Experience with cloud platforms such as AWS, GCP, or Azure.
• Strong understanding of system reliability, observability, and security in enterprise environments.
• Experience in building authentication systems is a plus.

Requirements

• Contribute to building the best-in-class company in addition to building the best-in-class product.
• Architect systems that manage real-time conversation state, context propagation, and session lifecycle.
• Play a substantial role in the agent assist integration process (chat and email) and authentication engineering team.
• Work with Cresta product and engineering teams, build and continuously improve the Cresta platform and new product requirements.
• Stay closely with customers and their requirements, analyze the technical tradeoffs, own the customer-facing deliverables.
• Demonstrate the engineering best practices in deliverables and daily work. Uphold others to the same high standards.
• Technical ownership in a substantial part of the Cresta authentication stack.
• Ensure high availability, low latency, and strong observability for real-time conversation systems.
• Implement authentication, authorization, compliance, and enterprise security best practices across integrations.
• Drive improvements in reliability, performance, and scalability in production environments handling high interaction volumes.

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.
• 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.