Technical Lead Ruby Typescript - Developer Experience

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

Benefits offered by this job

Salary to £130k

28 days annual leave

Pension

Health Insurance

Job summary

Client Server in London is seeking a Technical Lead / Full Stack Engineer (Ruby, TypeScript, React) to own the technical strategy and architecture across developer ecosystems, APIs and SDKs, and to lead cross‑team initiatives that raise the bar for quality and usability.

You will oversee the full development lifecycle from design to release, mentor junior engineers, collaborate with external contributors, and engage with the developer community while working flexibly in a hybrid model with

Qualifications

• Senior software engineer with experience building developer tooling and APIs.
• Strong hands-on experience with Ruby, TypeScript and React.
• Experience in a product-focused B2B SaaS environment.
• Able to make technical decisions that drive projects and raise the bar.

Responsibilities

• Own the technical strategy and architecture for Developer Ecosystems.
• Define best practices for API and SDK design.
• Lead cross-team initiatives to expand client libraries.
• Mentor engineers and review contributions.

Skills

Ruby

TypeScript

React

APIs

Developer tooling

Job description

Technical Lead Ruby TypeScript - Developer Experience Client Server London, England

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

Full-time