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About Vercel: Vercel is the agentic infrastructure company. We free people and agents to ship what's next. For more than a decade, Vercel has shaped how the web is built. As the team behind Next.js, v0, and AI SDK, we create products that help builders move from idea to production with speed, security, and exceptional developer experience. Now, software is entering a new era, and the next generation of products will not just be used by people. They will be built, extended, and operated by agents. We are building the platform for that future, trusted by companies like OpenAI, PayPal, Ramp, Supreme, and millions of developers worldwide. Whether you're building our products, supporting our customers, growing our community, or shaping our story, you'll help define what comes next. About the role: Developers are building faster than ever. Humans and agents are deploying more than 6 million times a day on Vercel, spinning up over 2 million Sandboxes and serving a trillion requests per month. Every single one is powered by our own compute infrastructure. The Persistence team sits within Vercel's Compute division. This team owns the deep infrastructure within Hive (our compute platform) focussing on storage and state for all our workloads (Builds, Sandboxes and Functions). This work is redefining compute with features like Fluid Compute, Persistent Sandboxes, and Custom Images. As a Software Engineer on the Persistence team, you'll work on the infrastructure that runs 100s of instances across every region where our customers deploy code, rethinking low-level primitives and contributing to platform features that improve the experience for thousands of developers every day. This role is based in London, UK. If you're within commuting distance of our London office, the role includes in-office anchor days. If you're located further afield within the UK, the role is fully remote. For location-specific details, please connect with our recruiting team. What you will do: Manage and improve our fleet of clusters, running 100s of instances deployed in every region where our customers deploy and run their code. Write Golang on a daily basis and use Terraform to provision infrastructure; you'll get to know Nomad as our scheduler for managing workloads. Rethink the primitives of our infrastructure - working with virtual filesystems, Linux primitives, and low-level virtualisation. Own the reliability and performance of our compute platform, including on-call coverage for a team where every improvement has outsized impact at scale. Collaborate across teams to drive the convergence of all compute at Vercel. About you: 5+ years of software engineering experience, with Golang strongly preferred. Deep experience with virtual machines, file systems and Linux - you like knowing how things work under the hood (tcpdump, strace, and iptables are familiar tools). Experience building and operating distributed systems at scale; you design for performance and reliability. Experience with schedulers and orchestrators for managing containers and non-containerised workloads (e.g. Nomad, Kubernetes). Excellent problem-solving and communication skills, with a genuine enthusiasm for digging into problems that don't have obvious solutions. Bonus if you: Have worked on low-level virtualisation or sandbox execution environments. Have product engineering experience and care about the developer-facing impact of infrastructure decisions. Have experience with on-call operations for large-scale distributed systems. Benefits: Competitive compensation package, including equity. Inclusive Healthcare Package. Learn and Grow - we provide mentorship and send you to events that help you build your network and skills. Flexible Time Off. We will provide you the gear you need to do your role, and a WFH budget for you to outfit your space as needed. Vercel is committed to fostering and empowering an inclusive community within our organization. We do not discriminate on the basis of race, religion, color, gender expression or identity, sexual orientation, national origin, citizenship, age, marital status, veteran status, disability status, or any other characteristic protected by law. Vercel encourages everyone to apply for our available positions, even if they don't necessarily check every box on the job description.

Vercel in London, UK is seeking a software engineer for the Persistence team to help run 100s of instances across regions. You will write Golang daily, work with Terraform and Nomad, and rethink low-level primitives and virtualization to improve reliability and performance of the compute platform. Join a team delivering scalable infrastructure powering millions of deployments. The role supports hybrid work with in-office anchor days for London residents or fully remote options for other UK

Quantcast in London is seeking a Software Engineer to join our engineering team on a full-time basis. You will contribute to real-time distributed systems, data infrastructure, and automation across our tech stack. The role requires a CS degree and strong fundamentals in algorithms, data structures, and modern languages such as Python or Java. You will collaborate with cross-functional teams and participate in on-call duties.

# Software EngineerQuantcastFull TimeLondonPosted 14 days ago Role OverviewQuantcast is hiring a Software Engineer. This is a full-time role in London. posted 2 weeks ago. Full responsibilities, required qualifications, and the apply link are listed in the description below. Resume Keywords to IncludeMake sure these keywords appear in your resume to improve ATS scoringPythonJavaORDesign SystemsBenefitsPrivacyAtQuantcastSign up free to auto-tailor your resume with all these keywords and get a higher ATS score Job descriptionAt Quantcast, we don't just build advertising technology, we revolutionize how it works. Our AI-powered Demand Side Platform (DSP) connects the world's most ambitious marketers with their ideal audiences across the open internet, delivering results that actually move the needle. Since 2006, we've been the industry's trailblazer, launching the first AI-powered measurement platform for publishers and the first AI-driven DSP. Our AI doesn't just optimize-it delivers the measurable outcomes that matter most to our clients, giving them the competitive edge they need in a crowded marketplace. Ready to join the team that's defining the future of digital advertising?Our engineering organization in London builds and operates many of the critical components underpinning the Quantcast product, including: real-time distributed systems, audience modeling, delivery control systems, large-scale data infrastructure, integrations with partners in the adtech eco system, payments and revenue processing, artificial intelligence infrastructure, and more. We're actively looking for Software Engineers to join us on our mission. What you'll do Write code, design systems, build out proof of concepts that improve systems and automation throughout our tech stack. Take part in the entire software engineering life cycle, from conception through designing, implementing and operating systems and services. Care about the health and maintainability of our systems, help us learn and drive continuous improvement in reliability, testing and operational monitoring, including participating in on-call duties. Collaborate closely with cross-functional teams, including product engineering, modeling, and other platform teams, to ensure delivering high-quality software products.You might be a great fit for this role if you: Enjoy working closely with other talented engineers, in a culture that values collaboration and winning together as a team. Have an appetite for growing your skills and your positive impact. Are excited and curious about technology and its potential. Who you are 0-2 years prior experience in professional software engineering (new grads welcome!) A degree in Computer Science or an adjacent field. Excellent skills in computer science fundamentals such as algorithms, data structures, systems design, common languages (Java or Python or similar). Excellent written and verbal communication skills in English Quantcast, we craft offers that reflect your unique skills, expertise, and geographic location. On top of a competitive salary, this position includes a performance bonus, equity, and a comprehensive benefits package. For more details, visit our Careers Page and see how we support our team. We are headquartered in San Francisco with offices around the world. Quantcast is an Equal Opportunity Employer. Please see the Applicant Privacy Notice for details on our applicant privacy policy. Join the team that unlocks potential.

Treefera seeks a Machine Learning Scientist for remote sensing to transform satellite, radar and LiDAR signals into precise intelligence. You will develop models for plantation mapping, biomass estimation and forest monitoring with end-to-end lifecycle ownership. You'll work with a global team, using Python ML stack (PyTorch, scikit-learn) and geospatial tools to deliver scalable, auditable results for real-world decision-making.

Relation is seeking a Machine Learning Scientist to join the Rosalind team in London. You will design and apply advanced machine learning techniques to DNA and genetic data, aiming to uncover non-trivial associations between variants and diseases to accelerate therapeutic discovery. The role requires a PhD or equivalent experience, strong Python, and expertise with PyTorch/TensorFlow. You will work with computational and experimental scientists, leveraging large datasets to drive translational

TryApplyNow is looking for a Software Engineer to join their Middleware team in Belfast. You will engage in building critical middleware services, enhancing your skills in cloud architecture and DevOps practices. The role requires a BS/MS in Computer Science with at least 2 years of experience and knowledge in Golang or Python. The salary range is competitive, between £45,000 and £60,000 per year, accompanied by various local benefits.

About Secure. Connected. Intelligent. Symphony is an AI-powered communication and technology company fueled by interconnected platforms: messaging, voice, directory and analytics. Our end-to-end encrypted technologies enable over 1,400 institutions to accelerate AI impact, prioritize data security, navigate complex regulatory compliance and optimize business interactions. Role Description As a Software Engineer at Symphony, you will join the Middleware team responsible for building and maintaining some critical middleware services that power our global ecosystem. You will get hands on experience working on high-impact projects across Datafeed (real time message delivery), TLM (Tenant Lifecycle Management), and Search systems. This is an excellent opportunity for an early career engineer to grow their skills in cloud architecture, distributed systems, and a modern GitOps/DevOps culture. Responsibilities Feature Development: Contribute to the full software development lifecycle-writing clean, testable code to develop and maintain microservices in an agile environment. Support Core Middleware: Assist in implementing and scaling services handling real time event delivery, tenant management, and search functionalities. Embrace DevOps & Automation: Learn and build automation tooling to deploy and operate cloud applications using modern GitOps workflows and CI/CD pipelines. Collaborative Growth: Participate constructively in code reviews, documentation, and team planning sessions, collaborating with senior peers and SRE teams. Required Qualifications Education & Experience: BS/MS in Computer Science or a related technical field, with 2+ years of software development experience. Programming Skills: Solid knowledge in Golang and/or Python. Good knowledge of Java and/or Python Core Concepts: A good grasp of computer science fundamentals, including data structures, databases, and basic cloud/distributed system concepts. Eagerness to Learn: Exposure to or a strong desire to learn Kubernetes, Helm, and GitOps workflows. Interest in working with a very varied stack (including message streaming (e.g., Kafka), different languages, different databases (e.g., Redis, ElasticSearch, MySQL . AI-Assisted Productivity: Familiarity with leveraging modern developer workflows, including hands on knowledge of using AI command line interfaces (such as Claude CLI or Gemini CLI) to optimize coding, troubleshooting, and automation tasks. Mindset: A proactive problem solver who communicates effectively in a highly collaborative, global team environment. Driven to learn new technologies, tools, and best practices for building reliable software. Compensation Salary Range: £45,000 - 60,000 base salary per year Bonus Plan Benefits and Perks Regional specific competitive benefits Build your own Benefits (BYOB) perk Local events, team building, and development opportunities We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment.