Staff Backend Software Engineer

• 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
• You’ll have the opportunity to explore different team areas and find the best fit for your skills and career goals
• 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

Benefits

• Weekly lunch & learn
• Work with an A+ team of ex-Founders, world leading scientists, and nationally competitive athletes
• Mentorship - A world class mentorship board advises and mentors our team-members to capture the opportunity ahead of us

• Cloud platform expertise (AWS, GCP, or Azure) with strong security knowledge
• Excellent communication skills for technical decision-making, cross-functional collaboration, and mentorship
• High standards for code quality, testing, and engineering best practices
• Proven experience leading large-scale distributed system architecture with deep understanding of consistency, fault tolerance, state management, and concurrency
• Experience with database design and optimization across SQL and NoSQL systems
• Strong API design expertise (REST, gRPC) and service-oriented architectures
• Strong proficiency in at least one major programming language (Python, Go, Java, C++, or similar)
• Strong expertise in system reliability, observability, monitoring, and production ownership (including on-call)
• Bachelor’s degree in Computer Science or related field
• 8+ years building scalable backend systems in production environments
• Experience building developer-facing tooling (CLIs, SDKs, testing frameworks)
• Hands-on experience with containerization and orchestration (Kubernetes, Docker)
• 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
• LLM integration experience (streaming inference, prompt orchestration, RAG)
• Real-time voice or streaming media systems background
• Infrastructure-as-code and GitOps workflows