Product Engineer – London
Location: London (Hybrid)
Employment Type: Full-Time
Salary: £90,000 – £100,000 + Equity
Department: Engineering
Overview
Sequence is building the AI-powered revenue platform that modern finance teams rely on to get paid — replacing fragile spreadsheets and legacy billing systems.
- Processing $1bn+ annual invoice volume
- Trusted by high-growth companies like , , and
- Achieved 10x ARR growth last year
- Recently raised $20M Series A led by alongside
Sequence is scaling fast — and this is your chance to build revenue-critical infrastructure from the ground up.
What You’ll Work On
You’ll take ownership end-to-end — from idea to production.
AI-Powered Approval Workflows
Build flexible approval routing systems configured in natural language and translated into deterministic, auditable business logic.
Intelligent Collections Agent
Design autonomous agents that manage invoice reminders and escalations through natural-language instructions.
Scale Billing Infrastructure 10x
Re-architect high-throughput billing pipelines with performance, cost-efficiency, and reliability in mind.
This is mission-critical infrastructure:
- A dropped event means incorrect billing
- An outage at month-end means revenue disruption
Recently Shipped
- Watchtower – AI command center for finance workflow agents
- Fully integrated e-signature experience for seamless quote closing
- Flexible Role-Based Access Control (RBAC) across APIs and UI
You Should Apply If
- You’ve shipped reliable production backend systems
- You care deeply about customers and product quality
- You thrive in ambiguity and early-stage environments
- You communicate clearly and take ownership
- You’re interested in distributed systems and resilient software
Nice to have: Strong relational database performance expertise (Postgres-heavy environment).
Tech Stack
- Backend: Kotlin (Http4k, Spring Boot)
- Storage: Postgres, BigQuery
- Messaging: Google Cloud Pub/Sub
- Infrastructure: Google Cloud, Terraform
- Frontend: TypeScript, React
- Monitoring: Google Cloud Monitoring, Sentry
How They Work
- Hybrid (3 days/week in London office)
- Cross-functional product teams
- Bi-annual company offsites
- Team lunch every Wednesday
What’s Offered
- £90,000–£100,000 salary
- Meaningful equity
- 25 days holiday + bank holidays
- Modern flexible pension (Penfold)
- Visa sponsorship available
Interview Process (1–2 Weeks)
- Initial Interview (30 mins)
- Technical Interview (60 mins)
- Product Interview (30 mins)
- System Design Interview (45 mins)
- Founder Interview (30 mins)
