Backend Software Engineer - Distributed Systems

Client Server; Greater London; Hybrid; GBP 98,000 - 120,000; Full time

Benefits offered by this job

Equity

28 days leave

Home-office setup

Learning budget

Health insurance

Job summary

Client Server is hiring a Backend Software Engineer to build distributed systems using Go, Node.js and modern server-side tech. You will contribute to a real-time messaging platform powering developers and businesses worldwide, delivering scalable, low-latency services.

This role supports a hybrid/remote setup with North London office meetups, equity and a competitive salary. You will shape architecture, own quality and help drive AI-enabled tooling in a fast-growing environment.

Qualifications

• Backend experience with Go or Node.js and modern server-side languages.
• Experience building or operating distributed systems and messaging platforms.
• Understanding of scalability, concurrency and fault-tolerant design.
• Ability to work autonomously in a fast-paced engineering environment.
• Interest in AI tooling and production-grade development.

Responsibilities

• Design and build core messaging platform components for real-time systems.
• Improve performance, reliability and scalability of distributed services.
• Own architecture decisions and maintain high code quality.
• Collaborate across teams to deliver production-grade software.

Skills

Go/Node.js backend

Distributed systems

Scalability & performance

Autonomous work style

AI tooling awareness

Pub/Sub / messaging tech

Tools

Kafka

RabbitMQ

NATS

Cloud infrastructure

Job description

Backend Software Engineer (Go / Node.js Distributed Systems) Remote / Hybrid to £120k + Equity

Are you an experienced Backend Software Engineer who enjoys building distributed systems, real-time infrastructure and solving complex scalability challenges?

You could be progressing your career at a high growth technology company whose messaging platform powers millions of real-time interactions for developers and businesses worldwide.

Your role:

As a Backend Software Engineer, you'll join the team responsible for the core messaging platform that underpins the company's real-time infrastructure. Working on highly scalable distributed systems, you'll design and build new platform capabilities, improve performance and reliability and solve complex engineering problems at scale.

You'll contribute across low latency messaging, Pub/Sub services, state synchronisation and next generation AI communication infrastructure, delivering production grade software used by developers around the globe.

Working in an AI first engineering environment, you'll leverage modern AI tools to accelerate development while retaining full ownership of architecture, code quality and technical decision-making.

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 have strong backend development experience with Go, Node.js or another modern server-side language
• You have experience building or operating distributed systems, messaging platforms, event-driven architectures or streaming technologies
• You understand scalability, concurrency, performance optimisation and fault tolerant system design
• You enjoy solving complex technical challenges and delivering high quality, production ready software
• You're comfortable working autonomously in a fast-paced engineering environment
• You embrace modern AI development tools while maintaining a strong focus on engineering quality
• Experience with Pub/Sub platforms, Kafka, RabbitMQ, NATS, streaming systems, developer platforms or cloud infrastructure would be highly advantageous

What's in it for you:

As a Backend Software Engineer will earn a competitive salary package including:

• Salary to £120k
• 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