Back end developer jobs in Harpenden - Page 16Create job alerts

Job Title: Software Engineer - Backend. This is a generalist mid-level backend position within the Ads Organization. Engage in the team's organizational processes, such as planning, backlog refinement, and sprint reviews, to ensure effective collaboration and feedback.

They’re hiring a Back End Developer who can take real ownership and hit the ground running. For this Back End Developer role, you’ll need:. Strong, Back End development skills using PHP, Node and any Python experience will be a bonus.

As a Senior Back-End Developer, you will play a key role in designing, developing, and maintaining the back-end of a complex microservices architecture. Collaborate closely with cross-functional teams including Product Owners, Business Analysts, Scrum Masters, and front-end and back-end developers.

As a Backend Software Engineer, you'll collaborate with a close-knit team to build and maintain the backend platforms that power social impact initiatives. Write and test clean, maintainable backend code using Node. Build backend platforms that generate real social impact globally.

Additional keywords: back end, developer, C# development, azure, IT, software, DevOps. Product Development team at Summit, you will be responsible for the back-end development of our market-leading, proprietary technology solutions for retailers. Define and implement new back-end solutions.

This is a generalist mid-level backend position within the Ads Organization. Engage in the team's organizational processes, such as planning, backlog refinement, and sprint reviews, to ensure effective collaboration and feedback. Independent Drive: Proactively identify opportunities for improvement

Strong experience working as a Backend Developer. Get notified about new Back End Developer jobs in England, United Kingdom. My client a global cloud security innovation leader is looking for an experienced Backend Engineer to join their UK based team.

Get notified about new Back End Developer jobs in. C# SQL Back End Developer - Remote. They are looking for a Back End C# Developer to join their remote UK team.

Get notified about new Back End Developer jobs in. Build and maintain backend services using FastAPI and Python for geometry, simulation, and data workflows. Back-End Engineer - London - Up to £115,000 Starting Base + Exceptional Bonuses/Benefits.

A leading digital intelligence company is seeking a Back End Developer in the UK to analyze requirements and develop secure REST APIs using modern. Join a diverse team committed to defending clients in the cyber defense industry.

We are seeking an experienced BI Developer to join our client’s data team. Perform data analysis to identify trends, patterns, and insights to support business decisions. Provide training and support to end-users on BI tools and reporting processes.

Back End Developer - Must have an Active DV Clearance - Hybrid. We are seeking a skilled and motivated Back End Developer to support the digital transformation of Defence services. You'll work with cross‑functional teams including front‑end developers, UX specialists, architects and stakeholders

As a Backend Developer at CleanCloud, you will work primarily with PHP and Symfony to build robust APIs, optimise database performance, and ship new features used by millions of end‑users globally. Back End Developer (PHP / Symfony). Analyzing and improving MySQL queries and backend logic for high

Futureheads have exclusively partnered with a high‑growth FinTech building institutional infrastructure for digital assets, and we are looking for a Senior Back End Developer to join their team. This is a hands‑on leadership position where you’ll work closely alongside the Business Owner and t

Full stack developer with Front- or Back- end specialization (Mid level, based in SA) – Join to apply for the Full stack developer with Front- or Back- end specialization (Mid level, based in SA) role at Dealstack. Full stack developer with Front- or Back- end specialization. Interested in working

It is now one of the UK’s most loved ticketing services, selling tickets for tens of thousands of events throughout the UK, from independent club nights to 60,000‑capacity festivals. Skiddle currently sells tickets for the likes of The Warehouse Project, Creamfields, Digbeth Dining Club and Live

Java Back-end Developer with Azure/AWS.

Build and maintain backend services using FastAPI and Python for geometry, simulation, and data workflows. This company is a spin‑out from one of the UK’s most successful start‑ups, built by top‑tier engineers and developers from industry‑leading teams.

Tech Developer mind – ready and eager to learn.

Design and optimise APIs and backend infrastructure for seamless front-end and AI integration. You are a strong backend developer who thrives in a fast-paced, collaborative environment. Sign in to set job alerts for “Back End Developer” roles.

As a result of acquiring a major new customer, we need a Back-End Developer to help us deliver a multi-year project.

As a Back End Developer You Will. Analyse software requirements to define and document REST API endpoints. Develop and implement secure REST API endpoints using modern.

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Design, build, and operate reliable, scalable backend services using Golang. Lead backend initiatives from concept through production and iteration. Collaborate closely with product, mobile, platform, and other backend engineers.

Front End / Back End Web Developer – South East England, Berkshire. Frontend Developers work in highly motivated teams, committed to delivering valuable applications and services to customers. Work within an Agile team to develop back-end applications and features to meet customer/project requirem

As a Back-End Developer, youll work closely with cross-functional teams to build and maintain API-driven back-end systems that power the entire platform. API and supporting back-end systems. Collaborate with front-end and mobile developers to design and deliver scalable features.

Backed by top-tier Silicon Valley investors, they’re reimagining how modern markets should operate — and they’re looking for a founding engineer to shape the core architecture from day one. This is a rare chance to join a technical founding team with backgrounds in quant trading, HFT, and worl

Joining a small, agile team that powers real‑world experiences for customers worldwide, the project is fast‑paced and requires independent ownership of complex backend challenges. We’re looking for an experienced Backend Software Engineer to join on a 6-8 week contract. You’ll play a key rol

Due to continued success and expansion, we're seeking a talented Backend Developer to join our development team. A developer who takes genuine pride in their code quality, can work with unstructured customer feedback to define technical requirements, and understands that great user experience someti

Strong backend engineering background with C# and/or Python. This role is best suited to a strong backend-focused software engineer who is technically curious, adaptable, and comfortable working across different domains, stakeholders, and problem spaces. Design and build backend-focused, cloud-nativ

O Associates are working closely with a leading Defence & National Security supplier in their search for a Data Engineer / Back End Developer to join the growing team on a contract basis.

Collaborate with frontend and product engineers to ensure backend contracts remain predictable and type-safe across Inertia and API boundaries. As Senior Back-End Developer, you will work on a Laravel codebase that’s built around clear boundaries, event-driven architecture, and high observability.

You’ll work closely with the Frontend team to deliver seamless user experiences, translating backend systems into something people can trust. What we expect from the Backend Developer:. Develop backend services in Node.

Location: London (x3 days a week onsite).We are looking for a passionate Senior Java Engineer in London to lead the design and development of core product features and services that power an app used by thousands of travellers on a daily basis.As a Senior Java Engineer for an loyalty program team, y

The Back End Developer will be responsible for developing server-side logic, maintaining and optimising databases, and ensuring high performance and responsiveness to requests from the front-end. This is a full-time remote role for a Back End Developer. They will work closely with front-end develope

The ideal candidate will be responsible for designing, developing, and maintaining robust, scalable, and secure backend systems. Develop and maintain backend services using. Our platform offers advanced features such as end-to-end encryption, geofencing, and continuous facial recognition, which veri

Back-End Developer (Python) - London - 3 days per week in office - Med-Tech - up to £85,000 p/a. The are looking for a Senior Python Developer who will be responsible for designing and building core back-end services in Python that power the platform. Design and build core back-end services in Pyth

Lead the design, development, testing, and deployment of scalable, high‑quality backend services in Go. Drive the technical evolution of our markets and trading backend, partnering with product and other engineering teams to deliver robust, observable, and maintainable systems. Strong grasp of sof

Direct message the job poster from RemoteStar.UK-based client, a leading cybersecurity company dedicated to risk mitigation and management.Led by experts in information security and high-growth enterprises, the client builds solutions to combat evolving cyber threats.APIs, enhancing data feeds, and

Back End Developer - New cutting edge AI product. Design, implement and maintain Back End services and APIs in a microservices architecture.

Backend Developer - PHP, Laravel. Due to an ongoing data-centric project, they are looking for an experienced PHP / Laravel Backend Developer to join for an initial 6-month contract (with potential extension) to help build and optimize data infrastructure behind their business intelligence and analy

We at The Big Phone Store are expanding and we are looking for more experienced Back End Developers to join our growing team. Collaborate with our front-end developers to integrate user-facing elements. Competitive salary dependent on experience.

Senior Back‑End Developer (PHP/Laravel) – AWS – Leeds/Hybrid.

We are seeking a highly skilled Senior Backend Web Developer with expertise across multiple backend technologies such as Python,. In this role, you will architect, build, and maintain robust backend systems while also providing mentorship and technical leadership to a team of junior developers. Seni

We are seeking an experienced Senior Backend Developer with a proven background in building high-volume, scalable services. If you are an SC Cleared Backend Developer with the required skills, please apply now with your latest CV. Get notified about new Back End Developer jobs in.

As a Back End Developer you will analyse software requirements to define and document REST API endpoints, develop and implement secure REST API endpoints using modern. Develop and implement secure REST API endpoints using modern. Understanding of front‑end build tools such as Vite, NPM (Essential)

You’ll be responsible for key backend systems that support enterprise, multi-user workflows, with a strong focus on scalability, security, and reliability. Build and maintain secure, multi-user backend services.

Design and build robust REST APIs and backend systems (Python/FastAPI).