Technical Lead Ruby TypeScript - Developer Experience

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

Benefits offered by this job

28 days leave

Home setup

Learning budget

Health insurance

Pension

Sabbatical

Gym subsidies

Job summary

Client Server is seeking a Technical Lead / Full Stack Engineer to own the technical strategy for developer tooling and APIs. You will lead architecture decisions across Ruby, TypeScript and React within a product-focused B2B SaaS context and mentor engineers.

You can work from the office in London or remotely with monthly in-person tech talks, aligning with a collaborative, pragmatic team to raise the bar on quality and performance.

Qualifications

• Senior software engineer with experience building developer tooling and APIs.

Responsibilities

• Own the technical strategy and architecture for Developer Ecosystems (iOS, Web, Infra/Automation).
• Define and drive best practices for API/SDK design, ensuring usability and scalability.
• Lead cross-team initiatives to expand client libraries and guide external contributors.

Tools

Ruby

TypeScript

React

Job description

Technical Lead / Full Stack Engineer (Ruby TypeScript React) London / Remote to £130k

Opportunity for a full stack technologist to join a highly regarded provider of serverless real-time infrastructure for the Internet that processes billions of messages a day and powers everything from live chat and VoIP calls to real-time pricing and stock availability for a multitude of services around the globe.

As a Technical Lead you'll own the technical strategy and architecture for one or more Developer Ecosystems (iOS, Web, Infra/Automation), define and drive best practices for API and SDK design, ensuring consistency, usability and scalability and lead complex, cross-team initiatives to expand and improve client libraries.

You'll oversee the full development lifecycle, from design through to release, maintenance and product evolution, mentoring more junior engineers and reviewing contributions, raising the technical bar across the team. You'll also guide and manage external contributors and open-source collaboration and act as a key interface with the developer community, incorporating feedback into product direction.

Location / WFH:

You can work from most of the time, collaborating via Slack and meeting up with the team at the dog friendly office in North London for tech talks, lunch and learn events etc. around once a month.

About you:

• You're a senior software engineer with experience of building developer tooling and APIs
• You have strong hands-on experience with Ruby, TypeScript and React
• You have experience within a product focussed B2B SaaS environment
• You have experience of making technical decisions that drive projects and raise the bar
• You're comfortable with AI tools such as Claude and Cursor and understand how they can be used to optimise processes
• You're customer and product focussed
• You're collaborative and pragmatic with experience of technically leading and mentoring others
• You have a thorough understanding of Computer Science fundamentals such as OOP, Data Structures, Design Patterns

What's in it for you:

As a Technical Lead you will earn a competitive salary package including:

• Salary to £130k
• 28 days annual leave
• Enhanced maternity and parental leave packages
• Your choice of kit and home-station set up
• Personal learning and development budget (£1000 p/a + 5% time to work on your own projects)
• BUPA Health Insurance + dental costs + mental health and wellness
• Pension, Life Assurance, Income Protection
• Fully paid one month sabbatical at five years' service
• Gym subsidies, Cycle to work scheme and more