Senior Product Engineer: AI-Driven B2B SaaS

plain - agencia creativa; Greater London; Hybrid; GBP 90,000 - 130,000; Full time

Job summary

Plain in London is seeking an autonomous engineer to help shape product direction and own backend systems. This hybrid role requires three days in our office and offers a chance to work across Core Product and Developer Infra teams.

You’ll design architecture, deliver end-to-end features, build scalable data models, and create a great developer experience with pipelines and APIs. If you enjoy shipping high-quality software and collaborating across disciplines, this role is for you.

Responsibilities

• Help set product direction by contributing to architecture and roadmap while balancing feedback and long-term health.
• Ship features end to end by scoping, building, and launching product features across Core Product and Developer Infra teams.
• Shape our backend architecture with data modeling and high-performance reporting and set company-wide standards.
• Create a stellar developer experience by improving data pipelines and APIs for easy use and build.

Job description

Plain in London is seeking an autonomous engineer to help shape product direction and own backend systems. This hybrid role requires three days in our office and offers a chance to work across Core Product and Developer Infra teams.

You’ll design architecture, deliver end-to-end features, build scalable data models, and create a great developer experience with pipelines and APIs. If you enjoy shipping high-quality software and collaborating across disciplines, this role is for you.