Backend developer jobs in Welwyn Garden City - Page 2Create 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

Design, develop, and maintain robust backend services using Java 9+ and the Spring Framework. Proven experience building backend services, APIs, and microservices.

Hands on experience building backend services and APIs and Microservices.

Senior Software Developer with a Backend Focus. To professionalise our product development and continue our growth path, we are currently looking for a senior backend developer. Senior backend skills with at least 5 years of experience with Java, and a good understanding of Python (FastAPI, Flask…

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

Backend Developer Web3 - London / Remote. An exciting and well-backed decentralised Crypto project is seeking to bring in an experienced and proven Backend Developer with skills in Solidity, and ideally Golang. The Senior Backend Developer will join a team of experienced and proven Blockchain expert

Back-End developer (python and GCP) - £525 inside IR35.

Canonical is a leading provider of open source software and operating systems to the global enterprise and technology markets.Our platform, Ubuntu, is widely used in breakthrough enterprise initiatives such as public cloud, data science, AI, engineering innovation, and IoT.Our customers include the

Join blp – The #1 Solution for ERP Automation.ETH and HSG spin-off redefining ERP automation with AI.We solve real enterprise problems with cutting-edge tech and a strong sense of ownership.Our solution is in production across 40+ countries, used by 20,000+ daily active users, automating 70,000+ p

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

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.

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

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.

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

Strong commercial experience as a backend developer using Python ideally within a start‑up or scale up environment. Experience designing scalable and maintainable backend architectures. You will play a key role in designing, building, and scaling specific backend applications that support complex

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

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.

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.

Backend/platform services that sit in the. 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 & DevOps Software Developer. We’re seeking a skilled Backend & DevOps Software Developer to join our Innovative Platforms team. Collaborate with front-end developers and product owners to deliver end-to-end solutions.

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

Leverage AI-powered developer tools to improve productivity and code quality. Minimum 3 years of professional experience as a backend engineer. Strong backend development experience with Java.

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.

You will work closely with our front-end developers, data engineers, and product managers to build scalable and efficient applications that meet the needs of our users. Proven experience as a Senior Back-End Developer or similar role. Methods is currently recruiting for a Senior Back End Developer t

Working closely with product and frontend teams to integrate backend services into the platform experience. This is more than a backend engineering role – it’s a chance to be part of a team building technology that helps some of the world’s largest enterprises stay ahead of attackers. Senior B

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. Our Product Area, Platinum, has historically owned and operated both

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.

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 dynamic tech company in the UK seeks a Mid-Senior Backend WordPress Developer for a fully remote role.

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 are looking for a dedicated BackEnd Technical Support Developer to help handle production issues. BackEnd Technical Support Developer. What we’re looking for from a Back End Developer:.

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.

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

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.

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

Backend Developer (Kotlin/Java, Android APIs). Previous experience as a Software Developer, Coder, Software Engineer, or Programmer is preferred.

We are looking for an awesome Senior Java Backend Developer to join our growing team.

Objectively restore stand-alone markets rather than enterprise-wide products.Uniquely underwhelm best-of-breed mindshare through adaptive niches.Seamlessly parallel task open-source content without resource sucking technology.Be involved in every step of the product design cycle from discovery and u

As a Senior Backend Developer, you will be part of the team that develops the backend components of all Bitfinex services (main trading application, Lightning Network support, Blockchain integrations, etc. Senior Backend Developer - Node. Security: build API services and backend processes with high

NET Backend Developer to join a high-impact engineering team building one of the most demanding real-time sportsbook platforms on the market. NET (C#) in backend environments. If youe passionate about distributed systems, performance-driven backend engineering, and have experience working in sports

A leading global consulting firm in the UK is seeking a Senior Java Developer to lead the development of scalable Java-based applications.

Backend Software Developer (Python) - London - £90,000 + Comps. We’re looking for a Backend Developer who thrives in dynamic environments — someone who loves clean code, scalable architecture, and being part of a team that’s pushing boundaries. Design, build, and optimize high-performance bac

We're seeking Senior Python Developers to join our back-end development team.