Job Overview
Location
New York City
Job Type
Full-time
Category
Software Engineer
Date Posted
May 16, 2026
Full Job Description
đź“‹ Description
- • Build and own the AI infrastructure that powers Sequence’s revenue platform, enabling reliable software on top of non-deterministic LLMs through agentic workflows, prompt iteration, tool use, and evaluation systems.
- • Design and implement AI-powered approval workflows that translate natural language business rules (e.g., "require VP approval for deals over $100k with annual terms") into deterministic, auditable, and scalable business logic for enterprise customers.
- • Develop an intelligent collections agent that autonomously manages late payment workflows based on natural language instructions (e.g., "send a reminder at 7 days overdue; escalate at 14 days"), collecting relevant context and executing actions without human intervention.
- • Own end-to-end delivery of AI systems from ideation to production, including identifying customer problems, designing solutions, shipping code, monitoring performance, and iterating based on real-world usage and failures.
- • Construct evals infrastructure including curated datasets, LLM-as-a-judge pipelines, prompt regression tests, and continuous monitoring systems to ensure model reliability and prevent degradation in production.
- • Design resilient systems that account for partial failures, state drift, and model instability, treating LLMs as untrusted inputs by default and implementing recovery mechanisms for long-running AI workflows.
- • Select and integrate appropriate tooling for building, evaluating, and securely running multi-provider AI systems in production, with informed opinions on platforms like Vertex AI, Langsmith, and similar frameworks.
- • Collaborate directly with product and design teams to understand customer pain points and translate them into technical requirements, prioritizing product impact over technical novelty.
- • Participate in on-call rotations for production systems that handle $1B+ in annual invoice volume, ensuring high availability and rapid incident response for revenue-critical infrastructure.
- • Influence the fundamental architecture of Sequence’s AI platform during a phase of rapid scaling, from a lean team of 20+ engineers, with direct access to customers and decision-making authority.
- • Maintain high standards for software reliability, distinguishing between "it works" and "it’s reliable"—prioritizing correctness, observability, and auditability in all systems handling financial workflows.
- • Communicate technical tradeoffs clearly to non-engineering stakeholders, documenting decisions and sharing work-in-progress to gather feedback and align on priorities.
- • Embrace ambiguity in early-stage product development, iterating rapidly based on customer input and operational feedback rather than waiting for fully scoped requirements.
- • Stay current with production-grade AI engineering practices, including security threats, model poisoning risks, prompt injection countermeasures, and data privacy considerations in financial contexts.
- • Contribute to the engineering culture by sharing knowledge, reviewing code, and improving internal tooling, documentation, and processes around AI system deployment and maintenance.
🎯 Requirements
- • Shipped LLM-based systems to real customers with firsthand experience of production failures and edge cases
- • Designed agentic systems with deep understanding of building blocks: embeddings, memory, tool use, long-running state, and recovery from partial failures
- • Built evals infrastructure including datasets, LLM-as-judge pipelines, prompt regression tests, and monitoring systems for AI reliability
- • Shipped production backend systems with strong emphasis on reliability over functionality
- • Has informed opinions on tooling for multi-provider AI systems in production (e.g., Vertex AI, Langsmith)
- • Comfortable with production ownership and on-call responsibility for revenue-critical infrastructure
🏖️ Benefits
- • Salary: $210,000 - $230,000
- • Meaningful equity share options
- • 20 days vacation plus national holidays
- • Competitive healthcare and 401K
- • Visa sponsorship available
- • Three days per week in the New York City office with team lunches on Wednesdays
- • Biannual company offsites
Skills & Technologies
See exactly how your profile matches this role — strengths, skill gaps, and what to do about them.
About Sequence
Sequence is a leading platform that empowers businesses to build and launch sophisticated applications on the blockchain. It provides a comprehensive suite of tools and services, including a decentralized identity solution, smart contract development environment, and a robust infrastructure for managing digital assets. Sequence caters to a wide range of industries, from gaming and DeFi to supply chain and digital collectibles, enabling seamless integration of blockchain technology into existing business models. The company focuses on simplifying the complexities of Web3 development, making it accessible for both developers and end-users. Their mission is to accelerate the adoption of decentralized technologies by providing a user-friendly and scalable ecosystem.
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