Senior Product Engineer (Backend) - London at Sequence

✨ The Stack take on this Sequence job

• 🏢 Sequence has 3 jobs here, 2 with visa sponsorship see all
• 🛂 Skilled Worker visa. Standard minimum salary: £41,700 a year guide

Updated 2026-11-06, from our data and official sources.

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About the role

Responsibilities:
- Design and implement backend systems for an AI-powered revenue platform (quoting, billing, revenue recognition).
- Build configurable approval workflows and translate natural-language rules into deterministic, auditable business logic.
- Develop autonomous collections agents and orchestration for automated receivables workflows.
- Re-architect and scale billing pipelines (storage, horizontal scalability, cost/performance trade-offs) to support 10x throughput.
- Own reliability and correctness of event-driven pipelines; ensure no lost events and high availability during peak/month-end loads.
- Collaborate with product, data, and frontend teams; take end-to-end ownership from design to production and monitoring.

Requirements:
- Strong backend engineering experience (several years building production systems) with ownership of end-to-end delivery.
- Experience with distributed systems, event streams, and designing for scale and reliability.
- Familiarity with technologies like Kotlin (or similar), Postgres, BigQuery, GCP, Pub/Sub, and Terraform preferred.
- Good judgment balancing cost, performance, and operational complexity; experience in financial or billing systems is a plus.
- Product-oriented mindset: direct customer impact, shipping quickly, and iterating based on feedback.
- Excellent communication and collaboration skills in a small, fast-moving team.

Responsibilities

Design and build AI-powered revenue infrastructure, including approval workflows and autonomous collections agents. Scale billing pipelines for high throughput while ensuring reliability for business-critical financial data.

Requirements

Experienced backend builder capable of shipping reliable production systems and handling end-to-end ownership in an ambiguous, fast-paced environment. Strong interest in distributed systems and resilient software is required.

Key skills

• Backend Engineering — in 130 other listings on The Stack
• Distributed Systems — in 346 other listings on The Stack
• Kotlin — in 252 other listings on The Stack
• Postgres — in 69 other listings on The Stack
• BigQuery — in 60 other listings on The Stack
• Google Cloud Platform — in 55 other listings on The Stack
• Terraform — in 475 other listings on The Stack
• TypeScript — in 468 other listings on The Stack
• React
• API Design
• System Architecture
• Relational Databases
• Async Messaging
• RBAC
• Software Reliability
• Product Ownership

On The Stack (as of 2026-11-06)

• Sequence has 2 other listings on The Stack, 1 of them marked as offering visa sponsorship.
• 216 visa-sponsored jobs in the United Kingdom on The Stack, posted in the last 60 days.
• 69 visa-sponsored backend engineer jobs in Europe on The Stack, posted in the last 60 days.
• The top of its stated salary (GBP 130,000 per year) is higher than 5 of the 17 other GBP per-year salaries stated by listings in the United Kingdom on The Stack.

Frequently asked questions about Sequence

Is this Senior Product Engineer (Backend) - London role still open?

It was posted on 2026-05-27. Listings more than 30 days old may no longer be active, so check Sequence's site before applying.

Does Sequence offer visa sponsorship?

This listing is marked as offering visa sponsorship. Eligibility rules are set by the employer, so check the details on Sequence's site.

Where is this role located?

The listing gives the location as London, United Kingdom. It is marked hybrid.

What is the salary for this role?

The listing states a salary of GBP 115,000–130,000 per year.

What skills does this role ask for?

The listing names: Backend Engineering, Distributed Systems, Kotlin, Postgres, BigQuery, Google Cloud Platform, Terraform, TypeScript, React, API Design, System Architecture, Relational Databases, Async Messaging, RBAC, Software Reliability, Product Ownership.