Backend jobs in Witney - Page 2Create job alerts

Our backend tech stack is Spring Boot with Java/Kotlin/Groovy, MySQL and Opensearch, hosted on AWS. Our frontend is React with Typescript, and you will be expected to contribute small features to the frontend (though the role is at least 95% backend). You're an experienced engineer with multiple ye

The role involves the design and development of backend services and infrastructure for Machine Learning workloads.

We are looking for a Senior Backend Engineer to join our new Quantitative Sports team. As a Senior Engineer you will play a critical role in the development and maintenance of the backend aspects of the pricing system for our sportsbook and work alongside our quantitative analysts to deliver our in-

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

Senior Backend Engineer – High-Scale Systems | Python & FastAPI | Security SaaS. They've completed Series A funding, raising $29 million across three funding rounds, and are now seeking a Senior Backend Engineer. You will be in charge of building scalable backend services and awesome messaging que

Software Architect Java - BackEnd, Back End Google Cloud (GCP).

We are looking for Senior Backend Engineers to join our Flexibility team.

Infleqtion is seeking a Senior Cloud Backend Software Engineer to design and build scalable backend services that power both internal platform infrastructure and externally facing systems for our quantum technologies. Build Python‑based backend systems using modern frameworks such as FastAPI and S

Want to work on the most pressing challenge of our generation? If you have experience building exceptional products, know how to execute at scale, and want to help build a company for the long term, we'd love to hear from you.CarbonChain helps the world’s biggest supply chains measure and reduce t

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

The role offers the opportunity to design scalable backend systems in a remote-first or hybrid environment.

Back-End developer (python and GCP) - £525 inside IR35.Experience with frontend technologies including React.Strong experience deploying and managing applications on Google Cloud Platform (GCP).Proficiency in designing and integrating RESTful APIs.Demonstrated ability to implement automated testing

A leading financial services company in Greater London is seeking an experienced Engineering Lead to support its growth.The successful candidate will manage software delivery, build high-performing teams, and define technical solutions.With a hybrid working environment, the company offers a competit

The ideal candidate will have over 5 years of experience in building high-performance backend services, preferably using Kotlin.

The team is a backend team building internal and external APIs, enterprise distributed systems, services.

The role requires 3+ years of experience in backend or full-stack development with languages like Node.

A leading software provider in the UK is seeking a Software Engineer (Golang) to design and develop scalable backend systems.

A Silicon Valley HealthTech company based in the UK seeks a Senior Python Backend Developer to design scalable backend services that manage real-time healthcare data.

A fast-growing finance company in Greater London is looking for an Entry Level Back End Acquisition Tech Developer.The role focuses on driving customer growth through data engineering and tooling, requiring strong proficiency in Python and SQL.The ideal candidate should thrive in an unstructured and

A tech company for urban mobility in London is seeking an experienced Engineering Manager to lead a Backend team responsible for core data infrastructure.

A leading recruitment firm is seeking a Senior Backend Engineer for an innovative AI infrastructure company based in London.

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

A forward-thinking tech company in Greater London seeks a Senior Software Engineer to own backend solutions development, lead a team, and enhance products for impactful software.

A leading consultancy firm in Greater London is seeking an experienced Node Developer with Front End Development experience.You will join a collaborative team focusing on back-end development, API integration, and database management.The ideal candidate is expected to have a strong grasp of Node.Jav

We are seeking an experienced Senior Software Engineer (Backend) to lead the development of our in‑house Charge Point Management System (CPMS) and customer‑facing app and web portal.

A leading software testing company in the United Kingdom is seeking a Lead Backend Software Engineer to own the technical delivery of product features. This role combines hands-on backend development with end-to-end delivery leadership, requiring strong skills in JVM-based technologies and distribut

Senior Backend Engineer Contractor (Java, Python, Rust + Ruby nice-to-have) | Fully Remote / EU-Based | Rate £550-650pd, Outside IR35 | 12-months Contract Length. This is a high-impact freelance role within a tech-driven established team - building scalable systems in a modern backend environment.

A leading global financial services firm in Greater London is seeking a Software Engineer III to join its International Consumer Bank team.This position requires expertise in Java and cloud-native microservices, with responsibilities including creating secure, high-quality software and collaborating

A leading crypto company is seeking a seasoned software engineer proficient in Rust to design robust services and libraries, collaborating with cross-functional teams.This fully remote opportunity requires 7+ years of experience, a security-first mindset, and the ability to debug issues autonomously

With hundreds of clients and over $500M in revenue processed, you’ll build mission-critical financial tools, architect core backend systems, and help shape both product and engineering culture at a pivotal moment of growth. Design, build, and optimise scalable backend services using Kotlin for com

A leading fintech company in Greater London is looking for experienced Kotlin engineers to enhance its product platform.As a key player, you will be responsible for developing high-quality services and collaborating on new features.The role emphasizes high-performance, scalable systems and a culture

A leading consultancy in Quality Engineering is seeking a Senior Systems Integration Test Analyst for a contract role in the United Kingdom.This position focuses on end-to-end technical validation of back-end systems, using SQL for database testing, and utilizing Azure DevOps for test management.The

This is a generalist mid-level backend position within the Ads Organization.

Our Direct to Consumer business is performing and growing strongly, which is why we - within the Customer Communication Platform team in Commercial Technology at On - are looking for a Lead/Senior Backend Engineer to scale On’s online business to the next level. You have 8+ years of backend experi

An exciting opportunity at a technology-driven engagement platform for a Software Engineer III (Backend) in the UK. You will lead backend development efforts in a 0→1 environment, leveraging AI tools to enhance productivity and build scalable systems.

A well-established global software provider in the UK is looking for a Software Development Team Lead to oversee a small team of engineers in developing a cloud-based data integration platform.The role combines team leadership with technical ownership, focusing on building scalable Node.TypeScript s

We're looking for a Lead Backend Engineer to help shape the future of Zego's platforms and services. As a Lead Engineer at Zego, you'll bring deep backend expertise driving delivery, influencing architecture, and mentoring others. Driving architectural discussions and decisions across multiple teams

They require a backend engineer to own, build the backend architecture, set up API calls and ensure it is scalable due to forecasted growth. Own and build backend architecture.

Professional backend development experience using Python. Understanding of backend security best practices.

A tech recruiting firm is seeking a Senior Backend Engineer to lead backend services from design to production. The ideal candidate will have over 7 years of strong backend experience in Golang, solid skills in system design, API and data modeling, and familiarity with modern cloud architectures.

We are looking for a Backend Infrastructure Engineer with strong experience in building and maintaining backend services that power developer infrastructure. Design, maintain, and evolve backend services supporting our CI infrastructure. Strong backend engineering experience with Java and Python.

NLPatent is an industry leading AI-first patent research platform that was an early mover in the application of Large Language Models.We use a combination of proprietary and off-the-shelf machine learning models and NLP techniques to help our users answer patent related research questions such as "I

A leading cryptocurrency platform in Greater London is seeking experienced backend engineers.

Design and ship scalable, secure, and cloud-native backend features with a focus on simplicity, data consistency, and financial privacy. You have strong experience building scalable backends in Golang, making smart architectural trade-offs.

Building Containerized Web Applications.Experience working with modern web frameworks (React.Background in designing and developing data-intensive web applications.Remote Work Opportunity in the UK.Uncovering problems, formulating hypotheses, and driving the entire process from concept to execution.

If you have worked with Kotlin in a fast-paced, product-focused startup environment, apply now for this fantastic Senior Backend Engineer opportunity!. Senior Backend Engineer – AI transforming the future. Having just received their Series A funding, they’re hiring Senior Backend Engineers with

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

A leading technology firm in Greater London is seeking a Software Engineer to contribute to the development of AI-powered solutions.The role involves working with millions of documents daily, ensuring high standards for quality and performance while collaborating with cross-functional teams.The idea