# Staff Software Engineer, Backend

**Company**: Cresta
**Location**: Canada, CA
**Work arrangement**: remote
**Experience**: staff
**Job type**: full-time
**Category**: Engineering
**Industry**: Technology

**Apply**: https://job-boards.greenhouse.io/cresta/jobs/5248021008?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply
**Canonical**: https://yubhub.co/jobs/job_ecc7271a-e34

## Description

We're seeking a Staff Software Engineer to lead the design and evolution of our backend systems that power Cresta's AI platform. You'll architect scalable, distributed systems that enable enterprise AI agents to deliver exceptional customer experiences through voice and digital channels.

This role offers the opportunity to shape technical strategy, mentor engineers, and build production systems at the intersection of AI and enterprise software. This is a generic backend engineering hire. Team matching will be conducted during the later stages of the hiring process based on your interests, experience, and team needs.

Key Responsibilities:

- Architecture & Leadership: Lead the architecture and evolution of large-scale distributed backend systems, driving cross-team technical initiatives from design through production

- Scalable Systems Design: Build high-performance, fault-tolerant backend services supporting real-time AI agents, conversation intelligence, and enterprise integrations

- AI/ML Collaboration: Partner with ML engineers to operationalize AI capabilities, building the runtime infrastructure and orchestration systems that power AI agents at scale

- Data & Storage Solutions: Design and optimize data storage and retrieval systems for real-time analytics and insights

- Production Excellence: Drive continuous improvements in system performance, cost efficiency, and scalability to handle high-volume production workloads

- Technical Mentorship: Mentor senior engineers, influence technical roadmap, and raise the bar for engineering quality across teams

Required Qualifications:

- Bachelor's degree in Computer Science or related field

- 8+ years building scalable backend systems in production environments

- Proven experience leading large-scale distributed system architecture with deep understanding of consistency, fault tolerance, state management, and concurrency

- Strong proficiency in at least one major programming language (Python, Go, Java, C++, or similar)

- Strong API design expertise (REST, gRPC) and service-oriented architectures

- Experience with database design and optimization across SQL and NoSQL systems

- Hands-on experience with containerization and orchestration (Kubernetes, Docker)

- Cloud platform expertise (AWS, GCP, or Azure) with strong security knowledge

- Experience building developer-facing tooling (CLIs, SDKs, testing frameworks)

- Strong expertise in system reliability, observability, monitoring, and production ownership (including on-call)

- Excellent communication skills for technical decision-making, cross-functional collaboration, and mentorship

- High standards for code quality, testing, and engineering best practices

Preferred Qualifications:

- Effective use of AI-assisted coding tools (Claude Code, OpenAI Codex, Cursor, etc.) to significantly boost development productivity

- Deep understanding of real-time communication systems, low-latency design, and high-availability architectures

- Proven track record with third-party enterprise platform integrations

- Experience with Temporal workflow orchestration platform

- Hands-on experience with Postgres, ClickHouse, and Elasticsearch

- Experience with Contact Center as a Service (CCaaS) platforms or contact center systems

- Familiarity with AI Agents, LLM-based systems, or AI orchestration platforms

- Real-time voice or streaming media systems background

- LLM integration experience (streaming inference, prompt orchestration, RAG)

- Infrastructure-as-code and GitOps workflows

What We Offer:

- 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

## Skills

### Required
- Backend systems
- Distributed systems
- API design
- Containerization
- Cloud platform
- Database design
- System reliability
- Observability
- Monitoring
- Production ownership

### Nice to have
- AI-assisted coding tools
- Real-time communication systems
- Low-latency design
- High-availability architectures
- Temporal workflow orchestration
- Postgres
- ClickHouse
- Elasticsearch
- Contact Center as a Service
- AI Agents
- LLM-based systems
- AI orchestration platforms
- Real-time voice or streaming media systems
- LLM integration

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Source: [Apply at job-boards.greenhouse.io](https://job-boards.greenhouse.io/cresta/jobs/5248021008?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply)