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Senior Software Engineer - Ads United Kingdom Jobs

156 Job Offers

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Senior Software Engineer
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United Kingdom , London
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Collinson
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Senior Software Engineer, Subscriptions
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Senior Software Engineer, Subscriptions – Manchester, UK. Join Roku, the #1 TV streaming platform, to develop core features for the Roku OS using C++, Embedded Linux, and ReactJS. You will design and ship high-quality software, write tests, and collaborate cross-functionally. Enjoy global wellnes...
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United Kingdom , Manchester
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Roku
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Senior Software Engineer
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United Kingdom , London
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80000.00 - 95000.00 GBP / Year
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Orbis Consultants
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Senior Software Engineer
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United Kingdom , London
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150000.00 - 160000.00 GBP / Year
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Orbis Consultants
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Senior Software Engineer
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United Kingdom , London
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Optimizely
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Senior Software Engineer
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Senior Software Engineer sought for a fully remote UK role with a cloud-native leader in child safety technology. You will design and build high-performance backend services using Golang and GCP, alongside frontend work with TypeScript and React. Key requirements include microservices, SQL, CI/CD...
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United Kingdom
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75000.00 - 85000.00 GBP / Year
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Premier Group
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Senior Software Engineer
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Senior Software Engineer (C++ / Algorithms) sought to build a high-performance visualization engine in the UK. This role demands strong C++ skills, deep computer science fundamentals, and a passion for solving complex algorithmic and graphical problems. Join a culture of technical excellence, foc...
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United Kingdom
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200000.00 GBP / Year
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Oho Group Ltd
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Senior Software Engineer
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Join Microsoft’s MORSE team as a Senior Software Engineer in the UK, securing Windows, Azure, and virtualization technologies for over a billion users. You’ll perform security design reviews, code reviews, and vulnerability research, building mitigations and scalable bug detection systems. Requir...
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United Kingdom , Multiple Locations
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Microsoft Corporation
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Full-Stack Senior Software Engineer, GenAI Data Products and Platform (VP)
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Join Citi as a VP Full-Stack Senior Software Engineer to build 'Citi Assist', a GenAI assistant for global employees. You’ll own end-to-end features using Python, TypeScript, and React, working with data pipelines and cloud infrastructure (OpenShift/Kubernetes). Based in London, this role offers ...
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United Kingdom , London
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Citi
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Senior Software Engineer (Kotlin)
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Senior Software Engineer (Kotlin) sought by hyperexponential, a high-growth AI startup backed by a16z. Build scalable, cloud-native data systems on AWS using Terraform and Kotlin. You will design distributed analytics infrastructure and deliver customer-facing features for a $7 trillion insurance...
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United Kingdom , London
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hyperexponential
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Senior Software Engineer
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Senior Software Engineer sought by a London health-tech scale-up to scale a platform used by 100k+ customers. You’ll own problems end-to-end, working across Python backend, React/TypeScript frontend, and AWS infrastructure. Ideal candidates have 5+ years experience, actively use AI in their workf...
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United Kingdom , London
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100000.00 GBP / Year
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Orbis Consultants
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Senior Software Engineer
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Join a greenfield AI startup in London redefining innovation discovery and protection. As a Senior Software Engineer, you’ll build production systems from scratch using Java, TypeScript, or Python, integrate with LLMs, and collaborate directly with founders. No legacy code or bureaucracy—just fas...
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United Kingdom , London
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120000.00 - 150000.00 GBP / Year
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Linux Recruit
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Senior Software Engineer - Margin Technology - Assistant Vice President
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Senior Software Engineer (AVP) sought for Citi’s Margin Technology team in London. You will build high-impact financial systems using Java, React, and Python, with expertise in RESTful APIs, Spring, and TDD. Ideal candidates have investment banking experience and knowledge of AWS, Kafka, or Kuber...
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United Kingdom , London
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Citi
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Senior Software Engineer - Margin Technology
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Senior Software Engineer - Margin Technology at Citi in Belfast. Build high-impact financial systems using Java, React, and Python, with RESTful APIs and TDD. Join a global team solving complex problems at massive scale. Enjoy 27 days leave, bonus, private medical, and hybrid work.
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United Kingdom , Belfast
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Citi
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Senior Embedded Software Engineer
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Senior Embedded Software Engineer sought to architect next-gen motion control systems for robotics and industrial automation. This role demands strong C/C++, ARM, and RTOS/bare metal expertise to optimize real-time algorithms. Based in Gloucestershire, you'll join a global R&D team solving comple...
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United Kingdom , Gloucestershire
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T2M Resourcing
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Senior Software Development Engineer
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AMD seeks a Senior Software Development Engineer in Cambridge, UK to design Linux network device drivers for 800G+ SmartNIC adapters. You will write high-quality C code, lead complex driver development, and submit changes to the upstream Linux kernel. Requires 5+ years of experience, proven Linux...
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United Kingdom , Cambridge
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AMD
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Senior Software Engineer
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Senior Software Engineer sought to design and deliver scalable micro frontend architectures using React, TypeScript, and NestJS. This UK-based role focuses on building high-performing, secure applications with a DevSecOps mindset. You will mentor engineers, drive CI/CD improvements, and shape tec...
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United Kingdom
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Admiral Group Plc
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Senior Software Engineer
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Senior Software Engineer sought in Belfast to build high-quality, scalable applications impacting global users. You will drive technical decisions, mentor junior developers, and apply best practices in security and performance. Ideal for experienced engineers proficient in full-stack development,...
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United Kingdom , Belfast
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Kainos
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Senior Software Engineer - Cloud Infrastructure & Observability
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Senior Software Engineer sought to architect Roku’s next-gen observability platform in Cambridge, UK. You will lead multi-cloud infrastructure, scaling metrics, logs, and traces across thousands of services. Requires deep Golang, Kubernetes, and Prometheus expertise, plus experience with Istio an...
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United Kingdom , Cambridge
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Roku
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Senior Embedded Software Engineer
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Join a stable, innovative engineering leader in East Sussex as a Senior Embedded Software Engineer. You will design and develop embedded software for advanced electronic systems, covering the full development lifecycle. The role requires strong embedded C/C++ experience, Agile methodologies, and ...
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United Kingdom , East Sussex
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Zenovo
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About the Senior Software Engineer - Ads role

Explore senior software engineer jobs in the dynamic and high-impact field of advertising technology. A Senior Software Engineer specializing in Ads is a pivotal role responsible for architecting, building, and maintaining the complex systems that power digital advertising platforms. These professionals work at the intersection of data, performance, and scale, developing the engines that deliver targeted ads, manage real-time bidding auctions, analyze campaign performance, and ensure optimal revenue generation. Their work directly influences the core business metrics of platforms, making this a critical and technically challenging career path.

Typically, professionals in these roles are entrusted with end-to-end ownership of major components within the ad tech stack. Common responsibilities include designing and implementing low-latency, high-throughput distributed systems capable of processing billions of requests daily. They develop algorithms for ad targeting, ranking, and budget pacing, while rigorously optimizing for performance and cost-efficiency. A significant part of the role involves ensuring system reliability and data accuracy, as even minor errors can have substantial financial implications. Collaboration is key; senior engineers frequently work alongside product managers, data scientists, and machine learning experts to translate business requirements into robust technical solutions. They also champion best practices, mentor junior engineers, and lead initiatives to improve code quality, system architecture, and operational excellence.

To excel in senior software engineer jobs within ads, a specific and advanced skill set is required. A strong foundation in computer science fundamentals, data structures, and algorithms is non-negotiable. Proficiency in languages like Java, Go, Python, C++, or Scala is common, coupled with deep experience in distributed systems, cloud platforms (AWS, GCP, Azure), and big data technologies (e.g., Hadoop, Spark, Kafka). Expertise in database design, both SQL and NoSQL, is essential for handling massive datasets. Given the real-time nature of ad serving, knowledge of concurrency, multithreading, and network programming is critical. Furthermore, a solid understanding of the digital advertising ecosystem—including concepts like RTB, DSPs, SSPs, and ad exchanges—is a major advantage. Successful candidates typically possess several years of relevant experience, a proven track record of solving complex scalability problems, and a data-driven, results-oriented mindset. They are proactive problem-solvers who can navigate the trade-offs between system performance, business needs, and technical debt. If you are passionate about building systems at massive scale and directly impacting business growth, exploring senior software engineer jobs in ads offers a rewarding and intellectually stimulating career.

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