4,831 Backend Engineer jobs in the United Kingdom

Backend Engineer

Fruition Group

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contract

Backend Engineer
Remote, UK
6 Month Contract

An incredible opportunity for an experienced Backend Engineer with advanced Go skills to join a prestigious tech client on a contract basis. This company is renowned for its engineering excellence - and it's not just the tech stack or the day rate that stands out. Contractors here regularly speak highly of the fast-moving, collaborative culture where aut.




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Backend Engineer

London, London Blink - The Employee App

Posted 4 days ago

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Permanent

Blink is an employee app for frontline workers, with industry-leading engagement and a DAU of 99%. We’re dedicated to scaling our platform through precision, automation, and innovation. As part of a world-class engineering team, you’ll play a key role in shaping the future of how we support frontline workers.

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Backend Engineer

London, London Uncapped

Posted 5 days ago

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Permanent

Hybrid role based in London, UK

Join Our Mission

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Backend Engineer

London, London Stakemate

Posted 5 days ago

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Permanent

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Backend Engineer

£40000 - £45000 annum Substrakt

Posted 13 days ago

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Permanent

Salary : £40,000 - £0,000

Location : We’re looking for someone based in the UK to help us better support our clients and collaborate closely with our wider team. This is a remote role, so you can work from wherever you feel most comfortable.

---

At Substrakt, a UK based company with Global impact, we help arts and cultural organisations create exceptional digital experiences and we’re looking for a Backend Engineer to help us do just that.

As part of our Engineering team, you'll build robust, high-quality backend solutions that power our clients’ websites and digital products. From new website builds and custom integrations to performance optimisations and security enhancements, you’ll play a vital role in delivering outstanding products and services.

Substrakt is an equal opportunities employer. We believe that diversity of thought and experience makes us stronger, and we actively encourage applications from people of all backgrounds, identities, and abilities. Read more about our approach to inclusive recruitment .

Requirements

What you'll do:
  • Create exceptional backend solutions: Work on a range of projects across our client base including new builds, updates to existing websites, API integrations, infrastructure configurations, and other server-side tasks. You’ll work with modern technologies such as PHP, WordPress, MySQL, SQL, Python, Wagtail, Heroku and AWS (S3, CloudFront, RDS) - always with performance, security, and scalability in mind.
  • Ensure quality and performance: Write clean, efficient, and secure code following best practices. You’ll test thoroughly, debug issues, and optimise performance to ensure reliable and seamless user experiences. You’ll also contribute to code reviews and help maintain our high technical standards.
  • Collaborate and contribute: Work closely with frontend engineers, designers, and client-facing roles to ensure smooth delivery. You’ll communicate directly with clients when needed to explain technical decisions, and support Producers and Support & Solutions Managers in scoping and technical planning.
  • Own your work: Take responsibility for the technical quality of your solutions, contribute to internal best practices, and help shape the future of our backend engineering processes. You’ll participate in solution reviews, submit and conduct code reviews, maintain technical documentation, and support continuous improvement.
What you'll bring:
  • Strong experience in backend development using modern frameworks and tools (e.g., PHP, Python, WordPress, Wagtail, Django)
  • Familiarity with relational databases (MySQL) and cloud infrastructure (Heroku, AWS, Cloudflare)
  • Understanding of performance optimisation, secure coding practices, and scalable system design
  • Enthusiasm for working collaboratively within a multidisciplinary team
  • A friendly and helpful approach to communicating directly with clients
  • Initiative, problem-solving mindset, and a drive to deliver high-quality work
  • Openness to learn, share knowledge, and support others

Benefits

Why Substrakt?

We’re a purpose-driven team, who are B-corp accredited, that values creativity, openness, and continual improvement. We believe in creating work we’re proud of and supporting each other to grow along the way. You’ll have the chance to work with some of the most inspiring arts and cultural organisations, contributing to meaningful projects that make a real impact.

  • We operate a flexible, hybrid working model that supports autonomy and work-life balance.
  • We have enhanced time off policies too with a focus on parents and carers, vacation days (you’ll get 25 days, plus bank holidays and you’ll never work a birthday again - because we give you that off)
  • We offer NHS cashback scheme to support healthcare costs and a monthly wellbeing allowance of £50 to spend on whatever mak you feel good (whether that be a gym membership, a meal out, or a treatment of some kind)
  • Everyone gets 6 days per year to focus on their own professional development, and a 00 budget to go along with that too.
  • We invest heavily in communication and connection through weekly mailers, an intentional meeting cadence and internal awards. We also organise and cover the cost of bi-annual team gatherings to museums, art galleries and theatres.
  • Not all benefits come in the form of traditional ‘perks’. At Substrakt, we place a strong emphasis on building the right team structure and workflows, so everyone knows what they’re accountable for and can focus on doing their best work.
  • All team members have the opportunity to participate in our steering groups which aren’t just ‘nice to haves’ - they help everyone stay curious and influence the way Substrakt approaches things like Equality, Diversity and Inclusion, Internal Culture, Accessibility, AI, and Sustainability

If this sounds like you, and you like the sound of us, we’d love to hear from you.

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Backend Engineer

£40000 - £65000 annum SeedLegals

Posted 458 days ago

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Permanent

At SeedLegals, we're on a mission to make legal work a breeze for startups and small businesses worldwide. Our tech-driven approach has already helped over 50,000 founders across the UK, France and Ireland close funding rounds, hire employees, and grant share options to their teams, to name just a few.

We're seeking talented backend developers to join one of our three scrum teams. You'll play a pivotal role in shaping team growth and developing our code base. Working alongside five engineers, a UX designer, and a Product Manager, you'll have the autonomy to drive innovation in areas like social investment features, document and workflow management, and legal template generation. Teams are managed from within and report directly to the CTO, so you'll be working alongside with your manager to solve technical problems.

This is a unique opportunity to gain extensive knowledge of the startup world, VC fundraising, investor tax schemes, and more. As you work on complex projects, you'll also gain invaluable domain knowledge that will prepare you for entrepreneurship yourself.

We're an international team of 17 developers from 12 countries, with a hybrid working model that allows for flexibility and collaboration. While each team meets fortnightly at our offices in Holborn to whiteboard, plan, and socialise, you'll also have the freedom to work remotely.

Requirements

We’d love to hear from you if.

  • You love solving challenging problems
  • You love building high-performance APIs
  • Have experience working with, and enjoy working with JVM languages (Java and Kotlin), and Spring
  • You understand why TDD is important
  • You own and take pride in contributing to all stages of development

And if you can hit one or two of these as well, even better.

  • You have some personal projects on the go (maybe you write a blog, help with friends’ websites, contribute to open source projects etc.)
  • Through your work, you have started looking more into the performance of web applications
  • You believe in the Agile manifesto

Benefits

Why join SeedLegals:

You’ll join a friendly, motivated and multicultural team of founders, investors, developers and growth hackers. We’re based in Holborn, in the heart of the legal district of London.

  • Share options: the option to buy shares in SeedLegals in the future, via our share option scheme
  • Pension
  • 25 days annual leave + bank holidays + your birthday off 
  • 3 volunteer days per year: time off to support a charity or not-for-profit organisation you care about.
  • Private healthcare
  • Life insurance and critical illness cover
  • Classpass: discounted access to studios, gyms, salons and spas near you
  • Cycle-to-work scheme
  • Weekly allowance for a free lunch in the office once a week
  • £250 WFH allowance to set up or enhance your home workstation
  • Annual learning budget for training courses, conferences and books
  • Conference and Meetup opportunities


Our Interview Process:

  • 1) ~40min initial conversation (video call)
  • 2) A ~1hr technical interview. Here, we'll ask you to work through designing a solution to a real world technical challenge we've faced, as well as some questions about your experience with backend code in production environments.

Our Values

  • We invest and trust in each other
  • We’re committed to a growth mindset
  • We embrace diversity and cultivate inclusion
  • We’re driven by customer success
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Backend Engineer

Distributed Crafts

Posted 475 days ago

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Permanent

We are BOB, a hybrid L2 to build and launch Bitcoin applications. Our mission is accelerating the world’s transition to a fair and transparent financial system through Bitcoin as a credibly neutral, global settlement asset. We believe in a world with access to finance for everyone, everywhere, in a secure and usable manner.

We are seeking an experienced Backend Engineer to implement Node.js and Rust APIs, extending SQL databases, and writing GraphQL endpoints for external and internal tools. Your job is to implement REST APIs for projects integrating with the BOB Fusion campaign (a points campaign) and other APIs as well as GraphQL endpoints for BOB in the future. You will further maintain the Postgres database to extend and optimize the campaign. You will collaborate with internal teams to create tools that allow us to analyze the data on the BOB L2 internally. You work closely with our BD and product teams to ensure that projects interacting with BOB are successful.

What you will do
  • Architect and build APIs in Node.js and/or Rust for external partners.
  • Extend and optimize the internal Postgres database for the BOB Fusion campaign.
  • Build subquery and data-pipelines using Goldsky.
  • Build internal tools that allow the BOB team to analyze on-chain data using off-chain data.
  • Engage in discussions with the core team on partner requirements and feature roadmap.

Requirements

  • Five years or more of building scalable, secure, and efficient APIs in Node.js or Rust.
  • Five years or more of maintaining and building SQL databases.
  • Two or more years of experience creating GraphQL endpoints.
  • A deep interest or experience with Ethereum, EVM, subgraphs, and web3.
  • Ability to work self-sufficiently, be proactive, and contribute ideas to solve problems.
  • Great communication skills in a remote setting.
Nice to have
  • Experience with Bitcoin
  • Contributions to open-source projects
  • Experience with Docker, Kubernetes and similar technologies
  • Familiarity with Swagger / OpenAPI

Benefits

  • Research-oriented team
  • Solve novel problems
  • Stock options
  • Remote working
  • 30-day vacation
  • Allowance for a co-working space
  • Yearly retreat
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Senior Backend Engineer

£70000 - £80000 Annually 83zero Ltd

Posted 17 days ago

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permanent

Job Title: Senior Backend Engineer
Location: Fully Remote (UK)
Salary: 70,000 - 80,000 per annum (DOE)

Are you a seasoned Backend Engineer with a passion for building scalable, high-performance systems? We're hiring a Senior Backend Engineer to join a cutting-edge UK-based tech company that's redefining how organisations manage distributed systems at scale.



About the Role

As a Senior Backend Engineer, you'll take ownership of critical backend services, designing and maintaining distributed systems with a strong focus on performance, scalability, and reliability. You'll lead technical discussions, mentor junior engineers, and collaborate across teams to deliver robust, secure, and efficient solutions.



Key Responsibilities

  • Design, build, and maintain high-performance backend services using Go.
  • Develop and optimise RESTful APIs that power the platform and integrations.
  • Lead architecture and implementation strategy discussions.
  • Optimise system and database performance (schema design, query tuning, etc.).
  • Ensure backend services meet security, compliance, and reliability standards.
  • Mentor junior engineers and contribute to best practices and documentation.
  • Collaborate with QA, DevOps, Product, and Technical Services teams.
  • Stay current with emerging technologies and industry trends.


What We're Looking For

  • 5+ years of backend engineering experience, including 3+ years with Go.
  • Strong experience with RESTful API design and distributed systems.
  • Solid understanding of SQL/NoSQL databases and performance optimisation.
  • Experience with RBAC, auditing, and secure system design.
  • Familiarity with Agile/Scrum methodologies and Linux-based environments.
  • Excellent communication, problem-solving, and mentoring skills.
  • Bonus: Knowledge of virtualization, storage systems, or networking protocols.


Why Join?

  • Fully remote working environment.
  • Competitive salary between 70,000 - 80,000 (depending on experience).
  • Work on complex, high-impact systems with a talented and collaborative team.
  • Be part of a company pushing the boundaries of backend engineering and infrastructure
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Senior Backend Engineer

83zero Ltd

Posted today

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full time

Job Title: Senior Backend Engineer
Location: Fully Remote (UK)
Salary: 70,000 - 80,000 per annum (DOE)

Are you a seasoned Backend Engineer with a passion for building scalable, high-performance systems? We're hiring a Senior Backend Engineer to join a cutting-edge UK-based tech company that's redefining how organisations manage distributed systems at scale.



About the Role

As a Senior Backend Engineer, you'll take ownership of critical backend services, designing and maintaining distributed systems with a strong focus on performance, scalability, and reliability. You'll lead technical discussions, mentor junior engineers, and collaborate across teams to deliver robust, secure, and efficient solutions.



Key Responsibilities

  • Design, build, and maintain high-performance backend services using Go.
  • Develop and optimise RESTful APIs that power the platform and integrations.
  • Lead architecture and implementation strategy discussions.
  • Optimise system and database performance (schema design, query tuning, etc.).
  • Ensure backend services meet security, compliance, and reliability standards.
  • Mentor junior engineers and contribute to best practices and documentation.
  • Collaborate with QA, DevOps, Product, and Technical Services teams.
  • Stay current with emerging technologies and industry trends.


What We're Looking For

  • 5+ years of backend engineering experience, including 3+ years with Go.
  • Strong experience with RESTful API design and distributed systems.
  • Solid understanding of SQL/NoSQL databases and performance optimisation.
  • Experience with RBAC, auditing, and secure system design.
  • Familiarity with Agile/Scrum methodologies and Linux-based environments.
  • Excellent communication, problem-solving, and mentoring skills.
  • Bonus: Knowledge of virtualization, storage systems, or networking protocols.


Why Join?

  • Fully remote working environment.
  • Competitive salary between 70,000 - 80,000 (depending on experience).
  • Work on complex, high-impact systems with a talented and collaborative team.
  • Be part of a company pushing the boundaries of backend engineering and infrastructure
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Lead Backend Engineer

BD1 1AB Bradford, Yorkshire and the Humber £70000 Annually WhatJobs

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full-time
Our client is looking for an accomplished Lead Backend Engineer to spearhead their software development efforts in Bradford, West Yorkshire, UK . This role is integral to our technical strategy, focusing on building scalable, robust, and high-performance backend systems. You will lead a team of talented engineers, mentor junior developers, and drive architectural decisions. This is an office-based position, fostering a collaborative and innovative team environment.

Responsibilities:
  • Designing, developing, and deploying backend services and APIs using modern programming languages and frameworks (e.g., Java, Python, Node.js, Go).
  • Leading a team of backend developers, including code reviews, performance management, and technical guidance.
  • Architecting scalable and reliable systems, ensuring high availability and fault tolerance.
  • Collaborating closely with frontend engineers, product managers, and QA teams to deliver seamless user experiences.
  • Optimizing application performance and database queries for efficiency.
  • Implementing and maintaining CI/CD pipelines and infrastructure automation.
  • Mentoring and coaching junior engineers, fostering a culture of continuous learning and improvement.
  • Researching and integrating new technologies to enhance our platform.
  • Ensuring security best practices are implemented throughout the development lifecycle.
Ideal candidates will possess a Bachelor's or Master's degree in Computer Science or a related field, with at least 7 years of professional software development experience, including significant backend expertise. Proven experience in leading engineering teams and a strong understanding of distributed systems, microservices architecture, and cloud platforms (AWS, Azure, GCP) are essential. Proficiency in at least one major backend programming language and experience with relational and NoSQL databases are required. Excellent problem-solving skills, strong communication, and leadership abilities are paramount. This is an exciting opportunity to shape the future of our technology stack and lead a talented team in Bradford, West Yorkshire, UK .
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