Senior Full-Stack Tech Lead – Ruby/TS/React, B2B SaaS, Remote

Client Server Limited; Greater London; Hybrid; GBP 78,000 - 130,000; Full time

Benefits offered by this job

28 days leave

Maternity & parental leave

Home-office setup

Learning budget

Health insurance

Pension & life cover

Sabbatical

Wellness subsidies

Job summary

Client Server Limited is seeking a Senior Full Stack Engineer / Technical Lead to own the technical strategy and architecture for developer ecosystems, focusing on API and SDK design with Ruby, TypeScript and React. You will oversee the full development lifecycle, mentor engineers, review contributions and collaborate with external contributors and the developer community to shape product direction.

This hybrid role offers London/remote work, a competitive package to £130k, and benefits

Qualifications

• Senior software engineer with experience building developer tooling and APIs.
• Hands-on with Ruby, TypeScript and React.
• Experience in a product-focused B2B SaaS environment.
• Proven ability to lead and mentor teams.

Responsibilities

• Own technical strategy and architecture for developer ecosystems.
• Drive API and SDK design for consistency, usability, and scalability.
• Oversee full development lifecycle from design to release and maintenance.
• Mentor engineers and engage with external contributors and open-source work.

Job description

Client Server Limited is seeking a Senior Full Stack Engineer / Technical Lead to own the technical strategy and architecture for developer ecosystems, focusing on API and SDK design with Ruby, TypeScript and React. You will oversee the full development lifecycle, mentor engineers, review contributions and collaborate with external contributors and the developer community to shape product direction.

This hybrid role offers London/remote work, a competitive package to £130k, and benefits