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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

We’re hiring a senior backend engineer to join a disciplined, senior team responsible for the platform behind Eequ, where engineers have real ownership and operate with high autonomy. Build and operate the backend platform that powers a real marketplace handling bookings, payments, and reporting f

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

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-

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

Backend Developer Romsey, Hampshire (Hybrid - 3 days office / 2 remote, flexible)£45,000 - £50,000 + BenefitsOOP, PHP, LaravelMy client build innovative SaaS solutions that help organisations monitor, manage, and optimise critical infrastructure.

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

We are looking for a Backend Engineer who will help build our Receive platform. Strong proficiency in backend programming languages like Java, Python or Go.

A leading insurance provider in Greater London is looking for a skilled Backend Developer to enhance and maintain their custom-built online platform.

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.

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

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

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

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

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

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

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

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 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.

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.

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

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

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 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

Candidates should have a strong background in backend engineering, system design, and be proficient in Java or a similar language.

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

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

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 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

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

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

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

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.

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 betting or complex, event-based sy

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.

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

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 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

We're looking for a strong Backend-focused Software Engineer who is excited to engineer highly performant, mission-critical systems that are designed for agile development and rapid scaling. You have experience with Python (preferred), or another modern backend technology, and are excited to work wi

Out of the successful launch of Chase in 2021, we’re a new team, with a new mission.We’re creating products that solve real world problems and put customers at the center - all in an environment that nurtures skills and helps you realize your potential.Our team is key to our success.We value col

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.

Staff Software Engineer to join our Customer Knowledge team in the UK or Ireland.This is a unique opportunity to architect and build large-scale, globally distributed applications that process hundreds of thousands of data points per second.In this role, you will be at the forefront of innovation, w

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.