Product Engineer

About Sequence

If you join Sequence youll help build the platform that lets companies get paid - were already processing $1bn in annual invoice volume and growing fast.

Were building the AI-powered revenue platform for modern finance teams replacing fragile spreadsheets and legacy systems with software their teams love using.

Cognition MoonPay and 100 other high-growth companies trust us to handle their entire revenue cycle across quoting billing and revenue recognition.

Founded by repeat entrepreneurs we hit 10x ARR growth last year and just closed a $20M Series A led by 645 Ventures alongside a16z and exceptional founders and CFOs from companies like Decagon Klaviyo and Wise.

Whats it like to work at Sequence

Small team big opportunity real ownership. Youll 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 thats scaling fast wed love to meet you.

What youll be doing

We care deeply about the quality of the product were building. Were 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.

Heres what you might work on:

• AI-powered approval workflows. Enterprise deals need approval chains but rigid workflows break when every company has different rules. Youll 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. Were 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. Were building revenue-critical infrastructure and currently rearchitecting our billing pipeline for an order of magnitude more throughput - rethinking storage strategies horizontal scalability and how well handle 10x load without 10x cost.

Were a lean team growing to 20 engineers. Youll 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.

Youll 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 isnt charged correctly. An outage at month-end means finance teams cant collect revenue from their customers.

What our newest hires have shipped

Watchtower: our command center for AI agents. As we introduce agents that automate financial workflows customers need visibility and control. This included building our first agent - a contract intake system that extracts customer and pricing information from uploaded or emailed contracts taking customers from signed contract to automated billing in minutes.

A fully integrated e-signature experience for quotes. When a customer is closing a deal friction kills momentum. We rebuilt the signing experience - including embedded authentication and branded emails - into a seamless signing experience used by teams at the top tech companies every day.

Role-based access controls across the product. Different companies have different structures but they all need tight control over who can approve deals or access sensitive data. This meant designing a flexible RBAC model that handles resources across every API endpoint and UI surface.

See more of what weve shipped in our public changelog .

You should apply if

Youre a builder who wants to solve problems end-to-end:

• Youve shipped production backend systems and care about the difference between it works and its reliable

• You care about customers - you want to understand why youre building something not just what

• Youre 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

• Youre 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.

This might not be right if

Were 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

• Arent comfortable with production responsibility. Were revenue-critical infrastructure - on-call matters here

Tech stack

We hire for ability not a specific tech stack. Most of the team learned our stack here:

• Backend: Kotlin (modular monolith using 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

How we work

Were based in London and New York and love spending as much time with our colleagues as possible. We spend three days together in the office with team lunch on Wednesdays.

Youll join a cross-functional product team working directly with design and product. We get together twice a year for company offsites.

What we offer

London

• Salary: 90000 to 100000

• Equity: Meaningful share options

• 25 days holiday bank holidays

• Modern flexible pension via Penfold with salary sacrifice available

• Visa sponsorship available

New York

• Salary: $180000 to $190000

• Equity: Meaningful share options

• 20 days vacation plus national holidays

• Competitive healthcare and 401K

• Visa sponsorship available

Interview process

We move fast - typically 1-2 weeks start to finish:

1. Initial interview (30 mins)

2. Technical interview (60 mins)

3. Product interview (30 mins)

4. System design interview (45 mins)

5. Founder interview (30 mins)

Weve written a detailed blog post about the process with tips about how to prepare.

Required Experience:

IC