Senior Software Engineer, Backend (AI Agent)

Cresta; United States; Remote; USD 205,000 - 270,000; Full time

Benefits offered by this job

Medical, dental, and vision coverage

Flexible PTO

Parental leave

Retirement savings plan

Remote work setup budget

Wellness stipend

In-office meals and commuter benefits

Job summary

Cresta is seeking a Senior Software Engineer to design and scale backend architectures that power our AI Agent platform. You will ensure high availability, performance, and seamless integration with frontend and ML teams in a fast-paced cloud environment.

You will own API design (gRPC/REST), optimize data flows, and lead reliability initiatives across production systems. The role offers competitive, location-based pay in the United States, equity, and comprehensive benefits.

Qualifications

• Bachelor’s degree in Computer Science or a related field.
• 5+ years in backend system architecture, cloud services, or related tech.
• Experience designing robust APIs (gRPC, REST) and scalable microservices.

Responsibilities

• Design, develop, and maintain scalable backend architectures for Cresta’s AI Agent solutions.
• Collaborate with frontend and ML engineers for seamless integration.
• Lead scalability and reliability improvements in production environments.
• Optimize server responses and process large data volumes efficiently.
• Improve security, cost-efficiency, and performance of backend systems.

Skills

Backend architecture

APIs gRPC/REST

Kubernetes

Docker

Cloud services

AI Agent systems

Education

Bachelor’s degree in Computer Science or related field

Tools

PostgreSQL

NoSQL databases

Job description

Location: United States

Cresta unlocks the true potential of the customer experience, turning every conversation into a competitive advantage. Cresta’s unified AI platform combines conversational AI agents, real-time human agent augmentation, and comprehensive conversation intelligence to drive revenue and efficiency gains across every channel. The world’s leading companies, including United Airlines, Cox Communications, and Marriott, use Cresta to power world-class customer experiences every day.

Born from the Stanford AI Lab, Cresta has raised more than $270 million from the world’s leading investors, including a16z, Greylock, and Sequoia. Cresta’s leadership includes some of the leading minds in AI today. Our CEO, Ping Wu, founded and led Google's Contact Center AI and Vertex AI platforms before joining Cresta to build the future of AI-driven customer experiences.

Over the next few years, AI is going to redefine how people all over the world interact with businesses every day. Come build that future at Cresta.

About the role:

As a Senior Software Engineer, your goal will be to ensure that our AI Agents are backed by the most reliable and scalable server solutions. This includes designing and maintaining the server architecture that handles real-world, high-volume interactions and ensures high availability and performance. While we’re focused on server optimization and data management rather than pure research, you’ll be working with some of the most advanced technologies in the cloud and server space.

This is a unique opportunity to shape the future of AI at Cresta by solving complex problems and bringing breakthrough AI advancements into production environments.

Responsibilities:

• Design, develop, and maintain scalable and robust backend architectures for Cresta’s AI Agent solutions and proprietary models.
• Collaborate with cross-functional teams including frontend engineers, machine learning engineers to ensure seamless integration of AI Agents into Cresta’s customer solutions.
• Lead initiatives to enhance system scalability and reliability in production environments, focusing on backend services that support AI functionalities.
• Drive efforts to optimize server response times, process large volumes of data efficiently, and maintain high system availability.
• Innovate and implement security measures, cost-reduction strategies, and performance improvements in backend systems supporting AI Agents.

Qualifications We Value:

• Bachelor’s degree in Computer Science or a related field.
• 5+ years of experience in backend system architecture, cloud services, or related technology fields.
• Proficient in designing and maintaining clear and robust APIs with a strong understanding of protocols including gRPC, REST.
• Previous experience working with Virtual Agent or AI Agent systems.
• Experience in high-performance database schema design and query optimization, including knowledge of SQL and NoSQL databases.
• Experience in containerized application deployment using Kubernetes and Docker in microservices architectures.
• Experience with cloud environments such as AWS, Azure, or Google Cloud, with a strong understanding of cloud security and compliance standards.

Perks & Benefits:

We offer a comprehensive and people-first benefits package to support you at work and in life:

• Comprehensive medical, dental, and vision coverage with plans to fit you and your family
• Flexible PTO to take the time you need, when you need it
• Paid parental leave for all new parents welcoming a new child
• Retirement savings plan to help you plan for the future
• Remote work setup budget to help you create a productive home office
• Monthly wellness and communication stipend to keep you connected and balanced
• In-office meal program and commuter benefits provided for onsite employees

Compensation at Cresta:

Cresta’s approach to compensation is simple: recognize impact, reward excellence, and invest in our people. We offer competitive, location-based pay that reflects the market and what each individual brings to the table.

The posted base salary range represents what we expect to pay for this role in a given location. Final offers are shaped by factors like experience, skills, education, and geography. In addition to base pay, total compensation includes equity and a comprehensive benefits package for you and your family.

Salary Range: $205,000–$270,000 + Offers Equity