5 months ago
London, United KingdomSenior
Responsibilities
- Build and own AI infrastructure for reliable software on top of non-deterministic models, including agentic workflows, prompt iteration, tools, and evaluations.
- Develop flexible, deterministic, and auditable approval workflows configured through natural language.
- Build an intelligent collections agent that autonomously executes configurable payment-reminder and escalation workflows.
- Shape fundamental architecture and engineering practices as the team grows.
- Work directly with customers and cross-functional product and design teams.
- Take production responsibility for revenue-critical infrastructure, including on-call responsibilities.
Requirements
- Experience shipping LLM-based systems to real customers and understanding how they fail in production.
- Experience designing agentic systems, including embeddings, memory, tool use, long-running state, and recovery from partial failures.
- Experience building evaluation infrastructure involving datasets, LLM-as-judge systems, prompt regression tests, and monitoring.
- Experience writing resilient software for business-critical systems built on non-deterministic models.
- Informed opinions about tooling for building, evaluating, and securely operating multi-provider AI systems in production.
- Experience shipping production backend systems and understanding reliability requirements.
- Strong customer orientation, comfort with ambiguity, adaptability, and clear communication.
- Ability to take end-to-end ownership in a small, fast-moving engineering team.
Benefits
- Hybrid work in London with three days per week in the office and team lunch on Wednesdays.
- 25 days of holiday plus bank holidays.
- Modern flexible pension through Penfold with salary sacrifice available.
- Meaningful share options.
- Visa sponsorship available.
- Typically two-week interview process from start to finish.
Tech Stack
Categories
About Sequence
Sequence is the modern billing and quote to cash platform to unlock error-free revenue workflows at scale. Backed by a16z 645 ventures and Salesforce Ventures, Sequence is working with leading B2B scaleups including Cognition, Incident.io, Bridge (acq. by Stripe) OpenRouter and Legora.