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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Product Engineer (Backend) - NYC - **Company:** Sequence, Inc. - **Location:** New York, NY, United States - **Experience:** Expert - **Salary:** $210,000.0 - $230,000.0 - **Contract:** Permanent contract - **Skills:** Artificial Intelligence, Business Logic, Podcasting, BigQuery, Spreadsheets, Software as a Service, Relational Databases, Distributed Systems, Github, PostgreSQL, TypeScript, Google Cloud, Cloud Monitoring, ReactJS, Spring-boot, Backend, Juniper, Kotlin, Sentry, Front End Software Development, Terraform - **Published:** October 27, 2026 - **Apply:** https://www.careerbuilder.com/job-details/senior-product-engineer-backend-nyc-new-york-ny--abd319cf-91b9-4ac6-bcf4-1a40526d4cec ## About the Role Product Engineering, Finance, Artificial Intelligence (AI), Spreadsheets, Revenue Recognition, Billing, Entrepreneurship, Juniper Networks M-Series, Head of Finance, Artificial Intelligence (AI) Agents, You're a builder who wants to solve problems end-to-end: * You've shipped production backend systems and care about the difference between "it works" and "it's reliable" * You care about customers - you want to understand why you're building something, not just what * You're comfortable with ambiguity. You thrive in early ideation stages, share work-in-progress to gather feedback, and adapt easily based on input * You communicate clearly. Thoughtful communication is a superpower that sharpens how we collaborate and build * You're interested in distributed systems and writing resilient software Nice to have: Deep relational database expertise. We do a lot of complex queries and care about performance. ## Description Small team, big opportunity, real ownership. You'll do work that matters, have direct access to customers, and grow alongside the company. If you want to do the best work of your career at a company that's scaling fast, we'd love to meet you. What you'll be doing We care deeply about the quality of the product we're building. We're looking for engineers who are ambitious and take ownership end-to-end: from identifying what to build, through shipping, to making sure it works for real customers. Here's what you might work on: * AI-powered approval workflows. Enterprise deals need approval chains, but rigid workflows break when every company has different rules. You'll build flexible routing that customers configure in natural language - "require VP approval for deals over $100k with annual terms" - and turn that into deterministic, auditable business logic. * An intelligent collections agent. Chasing late payments is tedious, manual work. We're building an agent you instruct in natural language ("send a reminder at 7 days overdue; escalate at 14 days"), which then runs the entire workflow autonomously. * Scaling billing infrastructure 10x. We're building revenue-critical infrastructure and currently rearchitecting our billing pipeline for an order of magnitude more throughput - rethinking storage strategies, horizontal scalability, and how we'll handle 10x load without 10x cost. We're a lean team growing to 20+ engineers. You'll have real influence on what we build and how we build it. Early enough to shape fundamental architecture. Late enough that customers depend on what you ship. You'll design systems that process high-velocity event streams, make technical decisions that balance cost and performance at scale, and build infrastructure that never compromises on reliability. This is business-critical infrastructure: a dropped event means someone isn't charged correctly. An outage at month-end means finance teams can't collect revenue from their customers., We're a small team moving fast on hard problems. That might not be a fit if you: * Enjoy larger organisation structures and staying only within your area of expertise. Taking ownership here means doing whatever the problem needs * Want a traditional engineering team set up, with a predictable roadmap and clearly scoped out tickets provided for you * Prefer a slower pace. Customers are depending on what we ship * Aren't comfortable with production responsibility. We're revenue-critical infrastructure - on-call matters here Tech stack We hire for ability, not a specific tech stack. Most of the team learned Kotlin here: * Backend: Kotlin (modular monolith using Http4k, Spring Boot, Exposed, Result4k) * Storage: Postgres, BigQuery * Async messaging: Google Cloud Pub/Sub * Infrastructure: Google Cloud, Terraform * Frontend: TypeScript, React * Monitoring: Google Cloud Monitoring, Sentry * Tools: GitHub, Slack, Notion, Linear, * Wharton FinTech: Reinventing Billing & Quote-to-cash (Dec 2025): origin story, why Riya built Sequence after her first exit. * Tech Finance with Sasha Orloff: E14: Revenue Models 101 & the New Stack: pricing/revenue models, quote-to-cash thesis. * Riding Unicorns: S6E5 (written recap): M&A, founding story, enterprise product views. * Bae HQ: Episode 207: a16z round, category vision. * The SaaS CFO with Ben Murray: AI-native B2B billing pitch. * Converge Podcast (May 2024): "financial router" framing. * Transcript of the Wharton FinTech episode if you want to skim rather than listen. Written: * USXP: From Oxford to a16z: building a US-first mindset at Sequence: go-to-market and US expansion. * The FP&A Guy: How modern finance teams are automating billing with AI: guest piece on AI in finance ops. * Sequence blog: Introducing Sequence 2.0: her launch post for the AI-native rebuild.