Backend developer jobs in Welwyn Garden City - Page 7Create job alerts

Compensation: Competitive, based on location and experience .Location: UK or Turkey (Hybrid – Office & Remote).Keepnet is an AI-driven SaaS platform experiencing strong, sustained growth in the UK with growing global momentum, helping organisations manage human cyber risk at scale.Keepnet runs

Collaborate within a cross-functional, lean team, taking ownership of your deliverables while working closely with journalists, developers, and wider technology teams across the newsroom.

Senior Backend Developer - UK Remote - Up to £75,000. A leading software company, renowned for its dynamic and ever-evolving nature, is seeking a Senior Backend Developer to join their team. As a Senior Backend Developer, the successful candidate will be at the forefront of developing and enhancing

This role involves designing, developing, and testing RESTful APIs and backend services. A leading financial services provider in Greater London seeks a Java API Developer to join their Digital Asset development team.

Building a secure and performant backend solution. Significant experience with backend development and maintenance using Kotlin or Java. Independent, self-managed working with responsibility as part of a small team of top developers.

Backend WordPress Developer (Remote - UK Only). We’re looking for a skilled and motivated Backend Developer to join our growing team at Zap. Researching and implementing innovative ways to improve our backend capabilities across client websites.

Independent, self-managed working with responsibility as part of a small team of top developers. Building a secure and performant backend solution on Kotlin. Significant experience with backend development and maintenance using Kotlin or Java.

You will be responsible for implementing new product features, maintaining and writing database migration scripts, identifying and fixing bugs autonomously, and ensuring high-quality, reliable backend services across our platform. Develop, maintain, and optimize backend microservices powering the Fo

A growing consulting business in the UK is seeking a talented Backend Python Developer to contribute to their AI-driven platform project. The ideal candidate will have strong experience in Python backend development and familiarity with cloud-native architectures.

Strong commercial experience as a backend developer using Python ideally within a start‑up or scale up environment. You will play a key role in designing, building, and scaling specific backend applications that support complex scheduling, operational, and data‑driven workflows. Design, develop,

We’re seeking a seasoned Backend Developer with a proven track record in building scalable and robust architectures, and an instinctive understanding of how to deliver seamless digital experiences. You will work closely with the game team and technical leads to create and explore new and exciting

Strong commercial experience as a backend developer using Python, ideally within a start‑up or scale‑up environment. Design, develop, and maintain backend services using Python, Django, Graphene, and AWS Lambda. Ensure high performance, scalability, and reliability of backend systems.

A consulting firm is assisting a Central Government client in seeking a Senior Developer for an initial six-month assignment in Milton Keynes.

The position as a Backend Python Developer is a permanent full-time position. A start-up in London, looking to expand its highly interdisciplinary team of exceptionally talented mechanical engineers, software developers, data scientists and chemists. As a Python Developer you will have be part of a

A dynamic software vendor in the UK is seeking an experienced Backend Software Developer.

If your idea of backend engineering is more than CRUD APIs and microservices boilerplate — this role is for you. Build core backend services in. Backend/platform services that sit in the.

We are now expanding our team and are looking for skilled, goal-oriented backend developers to join our teams. Design backend services using Python () and modern cloud-native architecture.

Backend & DevOps Software Developer. We’re seeking a skilled Backend & DevOps Software Developer to join our Innovative Platforms team. Design, develop, and maintain robust backend services and APIs using C#/.

This full-time Backend Web Developer position is based onsite in our brand-new Ultralytics office in London, UK.

ThinkCyber, a growing start-up, seek a Backend Software Developer to join our growing development team. We’re looking for a talented software developer who can seamlessly integrate into our development team and assist in various backend development tasks, including cloud infrastructure, API develo

Strong backend development experience with Java. Experience designing backend systems, APIs, and data migrations. You will play a critical role in rebuilding and scaling the core backend infrastructure of a growing product.

We’re seeking a seasoned Backend Developer with a proven track record in building scalable and robust architectures, and an instinctive understanding of how to deliver seamless digital experiences. You will work closely with the game team and technical leads to create and explore new and exciting

Methods is currently recruiting for a Senior Back End Developer to join our team on a permanent basis. We are looking for a highly skilled Senior Back-End Developer to join our team. The ideal candidate will have a strong background in Python and SQL, with extensive experience in developing and main

Senior Backend Engineer | High-Growth Cybersecurity Scale-Up | Fully Remote (UK based). Designing and building backend services and data pipelines powering a cutting-edge cybersecurity platform. Working closely with product and frontend teams to integrate backend services into the platform experienc

As part of the Platform Developer Experience (PDX) R&D Studio within the Platform Mission, this role will help shape the future of backend engineering by taking ownership of the nuts and bolts that amplify the developer experience. Bring your experience and knowledge of working with Bazel and scalin

As a Backend Developer (Kotlin/Java) at CIMAR, you will:. Build and support backend services in Kotlin to support a web UI and a set of remote gateways. Contribute to pragmatic architectural decisions and help shape backend patterns and standards.

A global digital agency is seeking a Senior Backend Developer to create robust backend services for complex digital products.

A highly profitable hedge fund in London is seeking a Backend Software Engineer (C#.

Developers are a core part of this process, taking full ownership of their software throughout its lifecycle—from design and development to testing, review, and production support.

Java Backend Developer,November 30, 2025### Job Description**On behalf of our client, we are seeking a Java Backend Developer – London, UK (Full-Time Permanent Role). Our client, a fast-growing technology organisation, is looking for a skilled Java Backend Developer to build secure, scalable backe

We’re seeking Mid and Senior Python Developers to join our back-end development team.

You’ll act as the backend authority within a small, collaborative team, working closely with a Frontend Developer and Senior UX/UI Designer. I'm now looking for a Backend Developer to join their agile team and play a key role in shaping the future of their technology. This is a hands-on backend ro

As a backend developer, you will be responsible for developing the middle- to back-end logic and algorithms of our web app. We are offering a part-time internship where you will be working with a team of experienced developers to build a web-based product on React Native.

About the job Senior/Lead Backend Game Developer - Remote in Europe. Senior/Lead Backend Game Developer - Remote in Europe. Job Openings Senior/Lead Backend Game Developer - Remote in Europe.

Proven experience as a Backend Developer or 3+ years in software development. We are seeking a highly skilled Backend Developer with hands‑on experience in Python and FastAPI. This role requires a deep understanding of backend technologies and the ability to work on robust, scalable solutions.

Work on backend data pipeline development. Integrate backend web services with databases/data warehouses. Bridge the gap between backend web development and data science teams.

Backend Java Developer – Data Fabric / Platform Engineering. If your idea of backend engineering is more than CRUD APIs and microservices boilerplate — this role is for you. Build core backend services in.

We're looking for an experienced data-focused backend developer to help supercharge our product, integrations and APIs. Get notified about new Back End Developer jobs in.

Holisticly communicate integrated channels via backend interfaces.

Our favourite candidates are developers that follow best practices in any programming language, who use the best tool for the job and can adapt to a rapidly changing environment. You will have experience with using a modern programming language for backend development on a daily basis during a solid

A BAFTA-winning game studio is seeking an experienced Backend Developer to design and implement scalable microservices for a high-traffic digital platform. The role involves collaborating with technical teams to create robust backend services, utilizing technologies like Javascript, C#, and cloud pl

At TripleTen, we’re creating innovative learning products that empower people to master IT professions like software engineering, data science, business intelligence, and QA — no matter their prior experience.Our AI-driven and thoughtfully designed platform helps students build real skills and a

We work at the intersection of finance and technology, helping institutions, startups, and developers navigate a digitally native economy.

You will work mainly on the backend of a key platform, utilizing Python and ideally C#. A Central London tech consultancy is seeking a Python Developer to join their growing team in a hybrid role.

Java Back-end developer with Azure/AWS skills for London location. Overall 12+ Years of Industry experience in IT and Java Backend should be 10+ Years experience MUST.

S-RM is looking to recruit a skilled Backend Developer to focus on the development and scaling of a strategic cyber security application. As a Backend Developer, your primary responsibility will be to enhance, maintain, and support an existing application that is crucial to our service delivery. Col

A leading audio streaming service in London seeks a Backend Developer to enhance software development processes. The ideal candidate will have experience in backend development, strong coding skills, and a passion for learning new technologies, especially AI-related tools.

Experience designing and scaling backend services. Years of experience is a poor yard stick but likely 5-7+ years working on backend systems. Build and extend backend features using internal and third‑party APIs (e.