Backend Developer Golang Node Pub / Sub

Client Server Limited; Greater London; Hybrid; GBP 108,000 - 132,000; Full time

Benefits offered by this job

Salary to £120k

28 days annual leave

Maternity/Paternity leave

Home-office setup

Learning budget

Health insurance

Pension & Life Assurance

Sabbatical

Gym subsidies

Job summary

Client Server Limited is seeking an experienced Backend Developer / Software Engineer to build a real-time messaging platform using Go and Node.js. You will design scalable distributed systems, own core backend capabilities and help push performance and reliability in a fast-growing tech environment.

The role supports remote work with occasional London office meetups; collaborating via Slack and joining monthly tech talks.

Qualifications

• Back-end development experience with Go/Node.js.
• Experience with distributed systems or messaging platforms.
• Understanding of scalability, concurrency and fault tolerance.
• Experience with Pub/Sub messaging.
• Ability to work autonomously in fast-paced environments.
• Experience with AI development tools is a plus.

Responsibilities

• Design and build the core messaging platform for real-time infrastructure.
• Improve performance and reliability of highly scalable distributed systems.
• Contribute to low-latency messaging, Pub/Sub services, and state synchronization.
• Maintain architecture, code quality and technical decision-making.

Skills

Go

Node.js

Distributed systems

Pub/Sub

Scalability

Autonomy

AI tooling

Kafka

RabbitMQ

NATS

Tools

Kafka

RabbitMQ

NATS

Job description

Backend Developer / Software Engineer (Go / Node Pub / Sub) Remote / Hybrid to £120k + Equity

Are you an experienced Backend Developer 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 Developer, 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 have experience with Pub / Sub messaging
• 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 Kafka, RabbitMQ, NATS, streaming systems, developer platforms or cloud infrastructure is highly advantageous

What's in it for you:

As a Backend Developer / 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

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Backend Developer Golang Node Pub / Sub London, England