4,040 Automattic jobs in the United Kingdom

The Opportunity

We're looking for a talented Senior Backend Developer to join a purpose-driven tech team that creates solutions making a real difference in people's lives. This is more than just a job, it's a chance to shape systems that support individuals and organisations across the UK and Ireland.

The Role

As a Senior Backend Developer, you'll be a founding member of a newly formed cross-functional engineering team. You'll play a key role in setting the tone for the team's culture, practices, and success. Your technical expertise will shape our architecture and support business-critical applications.

This is a highly collaborative role suited to someone with a passion for software craftsmanship and continuous improvement.

Key Responsibilities

• Enhance features and functionality of core products
• Design and implement scalable backend systems using C# (.NET 5+ preferred)
• Write clean, maintainable, and testable code using TDD/BDD principles
• Create and maintain RESTful and GraphQL APIs
• Collaborate with POs, BAs, and stakeholders to define solutions
• Mentor junior developers and promote best practices
• Drive improvements in development processes and tools

What You Bring

• 5+ years of backend development experience
• Expertise in C#, .NET (preferably .NET 6+), and SQL Server
• Deep understanding of SOLID and OOP principles
• Skilled in Git, Unit Testing (NUnit), and API development
• Familiarity with CI/CD pipelines and agile methodologies
• Strong communication and problem-solving skills
• Desire to grow within a dynamic and evolving team

Why Join?

This is an incredible opportunity to make your mark in a company that prioritises purpose, innovation, and professional growth. You'll be part of a team where your ideas are welcomed, your development is encouraged, and your work truly matters.

Ready to build something that helps others-and builds your career in the process? Apply today.

48954MSR1

INDMANS

Senior Backend Developer

Salary: Up to 90,000 per annum
Client: Leading Data Centre Provider

We're working with a well-established Data Centre Provider to recruit a highly experienced Senior Backend Developer. This is a remote role open to UK-based candidates, offering the chance to work on large-scale systems that support critical national infrastructure.

This is an excellent opportunity for a seasoned backend engineer with deep expertise in Node.js and TypeScript, who enjoys architecting scalable solutions and working with modern cloud technologies.

You'll be responsible for designing and building high-performance backend applications, contributing to the development of internal tools and processes, and ensuring code quality through testing and documentation. You'll also help shape technical standards and collaborate closely with other teams across the business.

Key Responsibilities

• Architect and develop scalable backend systems for enterprise-level applications
• Build and maintain robust Node.js services using TypeScript
• Optimise SQL queries and database performance
• Deploy and manage applications in cloud environments
• Customise build and development tools to suit project needs
• Apply best practices in software design, including SOLID principles and dependency injection
• Maintain clean, well-tested, and well-documented code
• Contribute to unit and integration testing across all deliverables
• Work closely with frontend developers to ensure seamless integration
• Stay up to date with emerging trends in backend development and share insights with the team

Required experience

• Extensive server-side development experience
• Strong proficiency in Node.js and TypeScript
• Solid understanding of cloud platforms and deployment strategies
• Deep knowledge of software architecture and design patterns
• Experience with CI/CD pipelines and modern development tooling
• Excellent communication and collaboration skills
• Must be eligible for SC clearance.

This is a brilliant opportunity to join a forward-thinking organisation at the forefront of digital infrastructure. If you're ready to take the next step in your backend development career, we'd love to hear from you.

Paying up to 90,000, depending on experience.

100% remote based.

Must be eligible to work in the UK.

The Liberty Recruitment Group is excited to be working in partnership with a leading Tech-enabled Analytics Consultancy based in London, who are looking for a Senior Backend Developer to join their award-winning Insurance division.

As part of a mixed technical team including back-end developers, testers, front-end developers and actuarial data scientists, you’d be working on their market-leading insurance application, used by some of the largest London Market and International insurers to assess over £200bn in reserves.

Your key focus will be:

• Leading the design and development of new product features, providing a holistic approach to design
li>Driving better integration between their C# and Python codebases, rewriting and restructuring code where needed to improve cohesion
• Address any performance bottlenecks and optimise performance of complex data workflows
li>Championing best practice and guiding the junior team members

What they’re specifically looking for:

< i>C# development experience (.Net 8) with production-level proficiency
• Data engineering – data-intensive application experience
< i>Python
• Azure PaaS / SaaS tools (eg. Azure Functions, App Services, Batch, Blob/Table/Queue Storage)
• Excellent problem-solving skills

Why join them:

It’s an entrepreneurial environment pushing the boundaries, harnessing technology to enable more efficient analytics. A true people-first employer where you’ll be supported to learn and develop your skills in a collaborative, innovative environment. Hybrid working (2 days a week in their London office), discretionary bonus, enhanced pension, private medical insurance, superb wellbeing services and much more.

Principal Backend Developer (C# / .NET / Playwright)

The Opportunity

This is a career-defining role for a Principal Backend Developer who wants to be at the forefront of a growing SaaS organisation. You'll be joining a company that's scaling rapidly, building innovative products that make a real difference to its customers. This role offers the chance to take ownership of backend systems, shape best practice, and mentor the next generation of engineers.

The Role

You'll provide technical leadership across backend development, ensuring systems are robust, scalable, and future-proof. Working closely with product owners, testers, and front-end teams, you'll bring engineering excellence into every decision. With a stack centred on C#, .NET, cloud services, and automation frameworks, you'll be both hands-on in coding and guiding others to deliver their best work.

Day-to-day responsibilities

• Architect and build scalable backend services in C# / .NET
• Drive adoption of clean coding practices, design patterns, and SOLID principles
• Mentor engineers, fostering a culture of growth, learning, and high performance
• Collaborate with product owners to refine requirements and translate them into technical solutions
• Integrate automation testing (Playwright) and CI/CD pipelines to ensure code quality
• Lead technical discussions, setting direction on tools, frameworks, and approaches
• Troubleshoot and resolve complex technical challenges across backend services
• Optimise system performance and ensure resilience across platforms
• Review code and guide engineering standards across the team
• Contribute to product strategy by aligning technical roadmaps with business goals

What you bring to the team

• Strong experience developing backend systems with C# and .NET
• Deep knowledge of cloud environments (Azure preferred)
• Experience in designing APIs and microservices at scale
• Solid understanding of automation testing tools (Playwright desirable)
• Leadership experience - mentoring, coaching, and guiding engineering teams
• Strong problem-solving skills with an eye for performance optimisation
• Enthusiasm for delivering quality solutions in a SaaS environment

Send your CV now to (url removed)

50249MS

INDMANS

The Liberty Recruitment Group is excited to be working in partnership with a leading Tech-enabled Analytics Consultancy based in London, who are looking for a Senior Backend Developer to join their award-winning Insurance division.

As part of a mixed technical team including back-end developers, testers, front-end developers and actuarial data scientists, you’d be working on their market-leading insurance application, used by some of the largest London Market and International insurers to assess over £200bn in reserves.

Your key focus will be:

• Leading the design and development of new product features, providing a holistic approach to design
li>Driving better integration between their C# and Python codebases, rewriting and restructuring code where needed to improve cohesion
• Address any performance bottlenecks and optimise performance of complex data workflows
li>Championing best practice and guiding the junior team members

What they’re specifically looking for:

< i>C# development experience (.Net 8) with production-level proficiency
• Data engineering – data-intensive application experience
< i>Python
• Azure PaaS / SaaS tools (eg. Azure Functions, App Services, Batch, Blob/Table/Queue Storage)
• Excellent problem-solving skills

Why join them:

It’s an entrepreneurial environment pushing the boundaries, harnessing technology to enable more efficient analytics. A true people-first employer where you’ll be supported to learn and develop your skills in a collaborative, innovative environment. Hybrid working (2 days a week in their London office), discretionary bonus, enhanced pension, private medical insurance, superb wellbeing services and much more.

We’re seeking a versatile Backend / AI Developer with hands-on experience delivering end-to-end solutions from concept to production. The ideal candidate brings strong expertise in Java (Spring Boot) and Python, with the ability to build scalable microservices, SaaS platforms, and AI-powered applications. You should be proficient in cloud platforms such as AWS and GCP, and experienced in API-first design, security best practices, and observability tools to ensure reliable, high-performing systems.

On the AI side, you have practical experience working with large language models (LLMs), prompt engineering, and frameworks like LangChain, with knowledge of advanced patterns such as Retrieval-Augmented Generation (RAG) and agent-based systems. A strong foundation in Agile SDLC practices is essential, along with familiarity in containerization, DevOps, and low-code/no-code platforms.

Experience across both backend and AI domains will enable you to seamlessly integrate advanced AI capabilities into scalable enterprise systems, making you a key contributor to building the next generation of intelligent, secure, and high-performance applications.

Backend / AI Developer – Key Skills & Competencies

Core Development:
Hands-on experience in taking solutions from concept to production, with strong expertise in Java (Spring Boot) and Python for backend and AI-driven application development.

Proficiency in building microservices, SaaS solutions, and API-first architectures to enable scalable, interoperable systems.

Frameworks & Tools:
Backend: Spring Boot (web, data, cloud, security), JUnit 5, Mockito, database integration.

AI: LangChain, Retrieval-Augmented Generation (RAG), MCP servers (as consumer and developer), and prompt engineering for LLM optimization.

Exposure to popular libraries and frameworks (Apache Commons, Guava, Swagger, TestContainers).

Architecture & Platforms:
Skilled in designing and deploying distributed systems on cloud hyperscalers (AWS, GCP).

Familiarity with containerization (Docker), CI/CD pipelines, DevOps practices, and Infrastructure as Code (IaC).

Experience with workflow/orchestration engines and agent-based architectures.

Scalability, Data & Observability:
Expertise in designing for scalability, performance, and extensibility across structured, semi-structured, and unstructured data.

Strong foundation in security best practices, with practical knowledge of logging, metrics, tracing, distributed debugging, and performance monitoring.

Awareness of AI application security and model safety considerations.

AI Development: 
End-to-end development of AI-powered solutions, from concept to production readiness.

Practical experience with LLMs and agentic AI, including LangChain integration, RAG pipelines, prompt engineering, and model consumption via APIs.

Ability to bridge backend and AI workflows, integrating advanced AI capabilities into scalable enterprise platforms.

SDLC & Agile Practices: 
Familiar with the Software Development Life Cycle (SDLC) and effective collaboration in Agile environments.

Ability to leverage low-code/no-code platforms for rapid solution delivery.

Nice to Have:
Knowledge of Domain-Driven Design (DDD) and schema-first development.

Experience designing plugin architectures and extensibility frameworks.

Exposure to frontend development (HTML5, CSS3, TypeScript, responsive UIs) for full-stack collaboration.

To apply, please submit your CV and daily rate expectation by clicking on the relevant links. If successful you will be contacted by one of our consultants within 3 working days. Unfortunately, due to the volume of applications we expect to receive for this role, if you do not hear from us within this time you should presume your application has been unsuccessful on this occasion.

Grassroots Recruitment is acting as a recruitment agency and a recruitment business in respect of this contract vacancy. Grassroots Recruitment is an equal opportunities employer and recruiter. We welcome applications from all sections of the community, regardless of age, race, sex, sexual orientation, marital status, religion or disability

Senior Backend Developer

Salary: Up to 90,000 per annum
Client: Leading Data Centre Provider

We're working with a well-established Data Centre Provider to recruit a highly experienced Senior Backend Developer. This is a remote role open to UK-based candidates, offering the chance to work on large-scale systems that support critical national infrastructure.

This is an excellent opportunity for a seasoned backend engineer with deep expertise in Node.js and TypeScript, who enjoys architecting scalable solutions and working with modern cloud technologies.

You'll be responsible for designing and building high-performance backend applications, contributing to the development of internal tools and processes, and ensuring code quality through testing and documentation. You'll also help shape technical standards and collaborate closely with other teams across the business.

Key Responsibilities

• Architect and develop scalable backend systems for enterprise-level applications
• Build and maintain robust Node.js services using TypeScript
• Optimise SQL queries and database performance
• Deploy and manage applications in cloud environments
• Customise build and development tools to suit project needs
• Apply best practices in software design, including SOLID principles and dependency injection
• Maintain clean, well-tested, and well-documented code
• Contribute to unit and integration testing across all deliverables
• Work closely with frontend developers to ensure seamless integration
• Stay up to date with emerging trends in backend development and share insights with the team

Required experience

• Extensive server-side development experience
• Strong proficiency in Node.js and TypeScript
• Solid understanding of cloud platforms and deployment strategies
• Deep knowledge of software architecture and design patterns
• Experience with CI/CD pipelines and modern development tooling
• Excellent communication and collaboration skills
• Must be eligible for SC clearance.

This is a brilliant opportunity to join a forward-thinking organisation at the forefront of digital infrastructure. If you're ready to take the next step in your backend development career, we'd love to hear from you.

Paying up to 90,000, depending on experience.

100% remote based.

Must be eligible to work in the UK.

Principal Backend Developer (C# / .NET / Playwright)

The Opportunity

This is a career-defining role for a Principal Backend Developer who wants to be at the forefront of a growing SaaS organisation. You'll be joining a company that's scaling rapidly, building innovative products that make a real difference to its customers. This role offers the chance to take ownership of backend systems, shape best practice, and mentor the next generation of engineers.

The Role

You'll provide technical leadership across backend development, ensuring systems are robust, scalable, and future-proof. Working closely with product owners, testers, and front-end teams, you'll bring engineering excellence into every decision. With a stack centred on C#, .NET, cloud services, and automation frameworks, you'll be both hands-on in coding and guiding others to deliver their best work.

Day-to-day responsibilities

• Architect and build scalable backend services in C# / .NET
• Drive adoption of clean coding practices, design patterns, and SOLID principles
• Mentor engineers, fostering a culture of growth, learning, and high performance
• Collaborate with product owners to refine requirements and translate them into technical solutions
• Integrate automation testing (Playwright) and CI/CD pipelines to ensure code quality
• Lead technical discussions, setting direction on tools, frameworks, and approaches
• Troubleshoot and resolve complex technical challenges across backend services
• Optimise system performance and ensure resilience across platforms
• Review code and guide engineering standards across the team
• Contribute to product strategy by aligning technical roadmaps with business goals

What you bring to the team

• Strong experience developing backend systems with C# and .NET
• Deep knowledge of cloud environments (Azure preferred)
• Experience in designing APIs and microservices at scale
• Solid understanding of automation testing tools (Playwright desirable)
• Leadership experience - mentoring, coaching, and guiding engineering teams
• Strong problem-solving skills with an eye for performance optimisation
• Enthusiasm for delivering quality solutions in a SaaS environment

Send your CV now to (url removed)

50249MS

INDMANS

The Opportunity

We're looking for a talented Senior Backend Developer to join a purpose-driven tech team that creates solutions making a real difference in people's lives. This is more than just a job, it's a chance to shape systems that support individuals and organisations across the UK and Ireland.

The Role

As a Senior Backend Developer, you'll be a founding member of a newly formed cross-functional engineering team. You'll play a key role in setting the tone for the team's culture, practices, and success. Your technical expertise will shape our architecture and support business-critical applications.

This is a highly collaborative role suited to someone with a passion for software craftsmanship and continuous improvement.

Key Responsibilities

• Enhance features and functionality of core products
• Design and implement scalable backend systems using C# (.NET 5+ preferred)
• Write clean, maintainable, and testable code using TDD/BDD principles
• Create and maintain RESTful and GraphQL APIs
• Collaborate with POs, BAs, and stakeholders to define solutions
• Mentor junior developers and promote best practices
• Drive improvements in development processes and tools

What You Bring

• 5+ years of backend development experience
• Expertise in C#, .NET (preferably .NET 6+), and SQL Server
• Deep understanding of SOLID and OOP principles
• Skilled in Git, Unit Testing (NUnit), and API development
• Familiarity with CI/CD pipelines and agile methodologies
• Strong communication and problem-solving skills
• Desire to grow within a dynamic and evolving team

Why Join?

This is an incredible opportunity to make your mark in a company that prioritises purpose, innovation, and professional growth. You'll be part of a team where your ideas are welcomed, your development is encouraged, and your work truly matters.

Ready to build something that helps others-and builds your career in the process? Apply today.

48954MSR1

INDMANS