22 of 22 Permanent Senior Backend Developer Jobs in the UK

Senior Backend Developer Jobs at SILA Linguists Company: SILA Linguists Location: Scotland We are looking for a Senior Backend developer to join SILA Linguists. Our Startup is a Language Service Provider (LSP) which has developed highly advanced and secured solutions. As a Senior developer, you will be working across the full development lifecycle, working with our developers' team to provide outstanding solutions. You will help maintain and develop backend services, including our applications and websites. SILA Linguists is searching for experienced Senior Backend Developer to join ...

Senior .NET Backend Developer Location: York (Hybrid - 2 days per week) Salary: Competitive + Benefits We're partnering with an established technology business undergoing a significant platform modernisation programme and are looking to appoint a Senior .NET Backend Developer to play a key role … shaping the future of its engineering capability. This is a hands-on senior engineering position, working closely with product and engineering teams, you'll help drive technical direction, champion best practice and contribute to the evolution of a high-performing development function. The Role Design, develop and maintain backend ...

Senior .NET Backend Developer Location: York (Hybrid - 2 days per week) Salary: Competitive + Benefits We're partnering with an established technology business undergoing a significant platform modernisation programme and are looking to appoint a Senior .NET Backend Developer to play a key role ...

backend developer who's just as comfortable in a Kubernetes cluster as you are in a PHP codebase, and fancies Friday afternoons off? We're looking for a Senior Backend Developer to join our growing digital team, taking on real ownership of our backend … rather than reporting up through layers of process. You'll report to our Head of Delivery and work closely with the rest of the backend team, but this is an individual contributor role with no direct reports. If you're comfortable in modern PHP, properly comfortable ...

services that support UK businesses and trade . Department for Business, Innovation, Science and Trade (BIST), in partnership with Inspire People, is seeking a Senior Backend Engineer. Whilst the team primarily develops in Python, we welcome applications from experienced backend developers with Java, C#, Go or similar … build and run platform services that underpin critical digital products, helping development teams improve observability, monitoring, CI/CD and service resilience. As a Senior Backend Engineer (Site Reliability), you will: * Design, build and operate reliable, secure and scalable cloud platform services supporting critical digital products. * Develop ...

Senior Backend Developer will be responsible for designing and implementing robust and scalable backend systems to support the company's iGaming products and services. About 5 Star iGaming Media 5 Star iGaming Media is a leading agency in the iGaming industry, providing a range of digital ...

Join Protein Works as our Senior Backend Developer, and build a greenfield, cloud-native platform from the ground up using Go and modern microservices architecture. About the role The Protein Works is a UK direct-to-consumer sports nutrition brand. We develop and manufacture our own products … business teams, write ADRs, contribute to golden-path templates/standards, and translate business needs into technical execution. What you will bring Essential Backend & Architecture: 5+ years of backend development (Go, Java, C#, or PHP with a focus/openness to Go) with strong CS/software engineering ...

BetStarters is seeking a Senior Backend Developer to design and implement robust backend systems powering our iGaming platform. The role focuses on scalable architectures, performance optimisations, and reliable services that underpin real-time gaming experiences. The ideal candidate will contribute to system design, code quality ...

description Waracle are looking for a Senior Developer for an exciting new role joining our world-class digital technology consultancy and home to a diverse, smart, curious and ambitious community of specialists in technology-driven transformation. We work with ambitious clients to help them solve their biggest business … seamlessly from strategy, design and delivery to operations. This is a Hybrid role working from the London office 2 days a week. As a Senior Developer at Waracle, you will play a pivotal role in shaping robust, scalable systems while fostering an inclusive environment where everyone can thrive. ...

Posted Thursday, 27 August 2026 at 00:00 We’re looking for a Senior Backend Developer who enjoys solving complex problems and building systems that scale. You’ll be part of a tight-knit, cross-functional squad that owns its products from idea to production. … technical decisions, the space to experiment, and the support to keep developing your skills. We’ll encourage you to grow into a T-shaped developer, with opportunities to get involved in architecture, DevOps and other areas of development. We work together in our Liverpool HQ three days a week ...

Optix is modernising a large, established Windows desktop platform into a modern web product. We are looking for a senior .NET backend developer with deep engineering experience, strong architectural judgement and a practical approach to modern development tools. This is a hands-on role with significant responsibility … backend architecture and delivery. You will design .NET services and APIs, turn complex legacy behaviour into maintainable solutions, and help improve engineering practices across the team. What you'll be doing Design and implement complex backend functionality using C# and modern .NET/ASP.NET Core. Make and communicate ...

Senior Software EngineerAbingdonAre you an experienced Software Engineer looking to combine cutting-edge technology with scientific innovation? We are seeking a Senior Software Engineer to join a highly skilled team developing next-generation Rock Physics and Geoscience applications used across the global energy sector. This is an opportunity ...

services that support UK businesses and trade . Department for Business, Innovation, Science and Trade (BIST), in partnership with Inspire People, is seeking a Senior Backend Engineer. Whilst the team primarily develops in Python, we welcome applications from experienced backend developers with Java, C#, Go or similar ...

side components that integrate seamlessly with client applications. Contribute to architectural improvements and maintain high standards of code performance and maintainability. Build and extend backend features using internal and third‐party APIs (e.g., Modulr, Truelayer, Checkout.com) to support lending products including loan applications, collections, and payments. Develop internal tools … Work alongside front‐end and product teams to build innovative solutions that empower users to manage their finances more effectively. Experience designing and scaling backend services from scratch, with solid understanding of microservices architecture and distributed systems. Commercial experience in high‐scale startups. Years of experience is a poor ...

Design, build and ship features end-to-end across web, mobile and backend as needed Own meaningful pieces of the product surface and the systems that back them Raise the bar on code quality, testing and engineering hygiene in the team Mentor more junior engineers through pairing, reviews … deliver customer value Learn and apply AI-powered tooling Requirements 5+ years of professional software engineering experience Strong skills in at least one backend language: PHP or Go High level of competency in TypeScript Comfortable owning features from idea to production with minimal hand-holding Solid grounding in software ...

Java is your passion, you know it like the back of your hand. The backend is where your interest lies. You think big, you don't just write the code, you think about how this code you write will make an impact. You can visualise the real world implications ...

highly scalable, secure web applications, services, and APIs, ensuring high performance and reliability. Champion AI-native development workflows, integrating AI coding agents to improve developer velocity, code quality, and maintainability across the team. Partner with Product Managers and stakeholders to shape the technical roadmap, translating complex requirements into elegant ...

Are you ready to take your PHP skills to the next level? We are dedicated to providing ongoing support for an existing project built on Laravel/Symfony/React technologies. Our approach to implementing ...

Citi Belfast is hiring Experienced Backend Java Developers to contribute to, and in some cases lead, the design and development of core backend services. The role spans Assistant Vice President to Senior Vice President levels, with a hybrid working model (up to 2 days from home ...

Citi Belfast is seeking Experienced Backend Java Developers to join our Technology team in Belfast. Roles range from AVP to SVP level, contributing to a variety of development activities and end-to-end lifecycle ownership. We offer a hybrid work model (up to 2 days home), competitive base salary ...

Jain Global is seeking a Core Platform Developer to design and build shared backend foundations used across the firm. The role focuses on platform capabilities that improve how teams build, deploy, and operate software. The ideal candidate will create reusable services, frameworks, and tooling, spanning API enablement, observability ...

Senior Back-End Developer - .NET/C# Are you looking for a new challenge? Looking for autonomy and a seat at the table? London | Hybrid | Fintech The Role A fast-growing fintech is building a new in-house engineering team and is looking for a Senior Back … Developer to become a key technical hire. You'll take ownership of a modern platform built with C#/.NET microservices, PostgreSQL, Redis and Google Cloud, helping shape architecture, engineering standards and future development. Key Responsibilities Build and maintain C#/.NET microservices Design APIs, integrations and data models ...