8 months ago
Seoul, Korea, SouthSenior
Responsibilities
- Design and lead implementation of core AI agent features, including advanced RAG pipelines and multi-step tool use
- Drive architecture for a scalable, fault-tolerant AI agent platform
- Develop core AI/ML agent logic and orchestration and build supporting evaluation, observability, classification, and performance pipelines
- Establish best practices for prompt engineering, agent orchestration, observability, and testing
- Design prompt strategies, A/B tests, and automated regression pipelines for customer use cases
- Optimize retrieval logic, embedding models, and RAG pipelines
- Own the full development lifecycle to deliver performant, reliable, and secure systems
- Mentor junior engineers and interns through code reviews and technical planning
- Collaborate with product managers, designers, and sales engineers to turn customer needs into technical solutions
Requirements
- At least 3 years of software engineering experience, including AI/ML or backend system ownership
- Deep Python expertise and experience building and scaling production systems
- Strong system design and software architecture skills
- Experience with distributed systems and cloud-native deployments such as AWS or GCP
- Hands-on experience with LLM APIs and agentic frameworks such as LangChain and LangGraph
- Strong English proficiency for effective reading and writing
- Experience with real-time or conversational interfaces is helpful
- Experience with vector databases, search technologies, or large-scale data processing is helpful
- Contributions to open-source LLM or AI tooling ecosystems are helpful
- Native-level English fluency is helpful
Benefits
- Hybrid work policy with flexible work hours and a minimum of three days per week in the office
- Equity program with a one-year cliff
- Professional development, training, wellness, fitness, mental health, and book expense support
- Annual language lesson benefit
- Monthly team-building budget and partial commuting-cost support
- Free parking at the Seolleung office
- Group insurance covering employees, spouses, and children
- Medical checkup support for the employee and one family member
- Seven additional paid holidays
- Unlimited daily snacks and beverages
- Twelve weeks of paid parental leave for mothers and fathers
- Additional support programs for congratulations and condolences
Tech Stack
Categories
About Sendbird
Sendbird provides communication APIs and an AI customer service platform for adding in‑app chat, voice, video, SMS, and autonomous agents. It sells cloud APIs/SDKs and an AI agent suite to product and support teams. Founded in 2013 and headquartered in San Mateo, the private company serves brands like DoorDash, Match Group, Noom, and Yahoo Sports, powering billions of customer conversations each month.