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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

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

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-house pricing solution. This position will be able to come in and have a lot of ownersh

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

Lead Java Backend EngineerHybrid - 2 days per week in Newcastle/LondonThis is an opportunity for a Lead Java Backend Engineer to shape the backend technical direction, bring teams together, and introduce modern engineering practices that support scalable, secure, and high-performing systems.

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

A digital comparison service company in Greater London seeks a Senior Full Stack Engineer to enhance their technology platform.In this role, you will manage both front-end and back-end development, ensuring scalability and performance while mentoring other developers.Ideal candidates will have exper

A leading car finance company in the UK is seeking a Java Engineer to design and build backend services that drive its operations.

A dynamic delivery service company in Greater London is seeking a Backend Engineer to join their Promotions team. This role is focused on backend development, ideally with expertise in Golang.

Candidates should have at least 3 years of commercial backend experience, strong skills in PostgreSQL, and familiarity with Agile methodologies. A leading tech recruitment agency is looking for a Backend Developer to join an agile team in Romsey, Hampshire.

You’ll be working in a team of backend engineers across MPG to spearhead the delivery and deployment of backend services for industry-leading game projects. Proven experience building backend infrastructure using infrastructure as code tools, e. Demonstrated mastery in at least one relevant area o

You will work closely with the game team and technical leads to create and explore new and exciting backend services, working on groundbreaking projects with cutting-edge technologies. Delivering high-performance, secure, and maintainable backend services through technical innovation, creative think

We are building an inclusive, human‑centred product and are looking for a Senior Backend Monetization Engineer to become part of our remote team and our mission to elevate the human experience of sexuality and relationships. You will be responsible for designing, building, and operating scalable,

A leading technology firm in London is seeking talented software engineers to join their front office trading technology team.The role involves building server-side systems that drive trading workflows used by internal traders and external counterparties.The ideal candidate will have over 10 years o

A leading technology company in Greater London is seeking a Software Engineer III to develop and enhance Local Business back-end systems.The ideal candidate will have experience in software development, particularly with Java or Kotlin, and a strong background in distributed systems and large-scale

You'll be responsible for backend service development that supports new product capabilities and growth. This role requires 6+ years of experience in backend development, particularly with Java or Go, and a solid understanding of scalable systems and microservices.

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 compl

We're looking for a Senior Backend Engineer to help shape the core of the product. Designing and building scalable backend systems in Node.

You will work closely with the game team and technical leads to create and explore new and exciting backend services, working on groundbreaking projects with cutting-edge technologies. Delivering high-performance, secure, and maintainable backend services through technical innovation, creative think

In this role, you will design and maintain robust backend services and APIs using Scala and Play Framework.

Our backend engineers have a variety of different backgrounds. We're usually always hiring for Backend Engineers, so there's no closing date for this job. As a backend engineer you’ll work in a squad alongside other disciplines like product managers, marketers, user researchers, designers, mobile

A consulting firm is assisting a Central Government client in seeking a Senior Developer for an initial six-month assignment in Milton Keynes.The ideal candidate must hold active SC Clearance and possess strong skills in developing production-grade applications with Python, designing scalable servic

A leading tech company in Greater London is looking for a Mid-Level Backend Engineer to join their growing Engineering team. You will build and maintain backend services using Ruby on Rails, collaborating with product managers and frontend engineers to enhance customer experiences. Ideal candidates

Design, implement, and maintain backend platform services in Go. Ensure backend services are secure, observable, testable, and operationally reliable. Proven experience building production APIs and service-oriented backend systems.

You will focus on backend systems, optimising PostgreSQL and managing third-party integrations.

Senior Software Engineer I - Backend (Java) - Business Accounting Integrations and Reporting. Strong proficiency in backend programming languages like Java, Python or Go.

As a Backend Engineer on Spotify's Subscriptions team, you'll build the systems that power premium memberships for hundreds of millions of users worldwide.

The ideal candidate will have 8+ years in backend experience, expertise in Ruby and Node. A leading technology company in London is seeking a Lead/Senior Backend Engineer to scale its customer communication platform.

The successful candidate will leverage their experience in backend development using modern programming languages like Go, Java, and Python.

You’ll get involved wherever the problem lives—product, frontend, backend, or infrastructure.

In this role, you'll work on backend architecture, APIs, and data systems while collaborating with a global engineering team.

A leading UK Charity is seeking an Application Support Engineer/Developer to provide technical support for the iTrent HR and payroll system.This role is 100% remote and involves troubleshooting, developing custom solutions, and collaborating with various teams to enhance the system.Ideal candidates

A leading retail innovation company is seeking a talented Backend Software Engineer to join their dynamic and agile team.

A leading finance technology company in the UK is seeking a Back End Engineer to enhance payment systems and financial data infrastructure.This hybrid role offers flexibility to work remotely and aims to empower small businesses through innovative technology solutions.Ideal candidates should have a

We are looking for an exceptional Software Engineer, to join our Backend Engineering squad.

A leading tech company is seeking a MongoDB Developer to lead database delivery, including schema design and performance tuning.The ideal candidate will have 6-10 years of experience in software development focused on MongoDB, strong analytical skills, and a collaborative approach.Responsibilities i

The role involves leading backend development using advanced Python skills and collaborating with product and design teams.

A leading AI company in Greater London is seeking a Senior Software Engineer to lead backend and edge/IoT engineering for high-impact projects.

The role requires 5+ years of backend experience, particularly in TypeScript, and familiarity with real-time systems such as WebSockets. A leading fintech company is looking for a Senior Backend Developer to own the infrastructure for data pipelines, APIs, and databases.

This hybrid role requires expertise in Java and microservices architecture, with responsibilities including developing new features and maintaining backend services.

Senior Software Engineer I - Backend (Java) - Business Accounting Integrations and Reporting. Strong proficiency in backend programming languages like Java, Python or Go.

A leading sportswear company is seeking a Backend Software Engineer to develop and maintain cloud-native applications using TypeScript and microservice architectures. Candidates should have at least 3 years of backend experience and a strong collaborative mindset.

Ideal candidates will have experience in game development, backend services, and cloud platforms like AWS. A gaming company is seeking a fully remote Senior Backend Engineer based in the UK or EU. The role involves working with a team to develop backend services for exciting game projects and contri

A prominent tech company is seeking skilled engineers in Greater London to join their Core Tooling team.The role involves contributing to tooling for efficient development, focusing on Go, Kubernetes, and AWS.Candidates should demonstrate strong software-related security experience and a collaborati

A fast-growing fintech startup is seeking a Backend Product Engineer to architect and build core backend systems for a new product line.

We're a startup in the automated decisioning space - and the backend is where the hard problems live. We're looking for a Senior Backend Engineer to join our engineering teams. Build and operate backend services in Python on AWS - Lambda functions, DynamoDB, Aurora, and event-driven pipelines that h

This role is ideal for an experienced backend-focused engineer with full-stack exposure, looking to work on business-critical systems that support operations at a national scale. Lead the development and continuous improvement of core backend systems.

A leading game development firm in the United Kingdom is seeking a Principal Backend Engineer to lead the delivery and deployment of backend services for game projects.