Infrastructure Security Engineer

About the PositionWe are excited to invite applications for the role of Windows Infrastructure Engineer at Jane Street. As a key player in our IT Engineering group, you will be responsible for maintaining and optimizing our internal Windows infrastructure. We welcome candidates who possess substantial expertise in infrastructure management, application support, automation, and Windows operating systems.Windows is the backbone of our desktop environment, and our essential infrastructure services rely heavily on Windows servers. Ensuring these systems operate seamlessly is vital for our business's performance and reliability.In this role, you will focus on enhancing, automating, and standardizing our Windows environment. Proficiency in scripting or programming languages, particularly PowerShell, Python, or C#, is highly desirable. Our scripts are systematically organized in a centralized repository, allowing for efficient collaboration and usage across various teams.As part of a global team, you will collaborate with colleagues both locally and internationally to develop innovative solutions, identify and resolve issues, plan and execute deployments, and document your findings.This position is situated within our dedicated IT Engineering team, which monitors and manages a Windows environment across a diverse global landscape. Your analytical skills and technical knowledge will be instrumental in supporting our colleagues' daily operations and maintaining our systems at peak performance.

Role overview Granola seeks a Windows Product Engineer based in London. The role centers on developing and enhancing software solutions for the Windows platform. Efforts focus on creating reliable, user-friendly applications that help customers get more value from Granola’s products. What you will do Design, build, and improve Windows applications Collaborate with fellow engineers to address technical challenges Share ideas and feedback to make products simpler and more effective for users Requirements Experience developing software for Windows Ability to work well with others to solve problems Interest in creating products that customers find easy to use

About the RoleJane Street is seeking a skilled Infrastructure Security Engineer with a robust background in Windows engineering and hands-on experience with contemporary platform security measures to enhance the security of our IT platforms globally. In this pivotal role, you will exercise sound judgement and a keen sense of priorities to manage complex remediation tasks effectively. Your insights will guide our mitigation strategies and provide essential technical guidance for the team.Your responsibilities will include proactively designing, testing, implementing, and documenting strategic security measures. You will lead the coordination and delivery of security solutions across our IT infrastructure while discovering opportunities to automate intelligent workflows. Your expertise will be vital in securing both internal IT and remote working environments through a blend of technical execution, consultancy, and influence over the broader IT team. This position encompasses a variety of tasks, including building scalable security controls, investigating emerging threats, developing innovative security tools, and spearheading vulnerability management initiatives.As part of our IT Engineering department, you will collaborate with a dedicated team of engineers who oversee our operations across a diverse physical and virtual computing landscape spanning three continents. Your analytical skills and technical proficiency will be crucial in supporting our colleagues' daily operations and maintaining our systems at peak performance.

Join Interactive Brokers as a Windows Platform Engineer - Support, where you will be the first line of defense against IT-related issues on the Microsoft Windows platform. Your role will involve providing technical assistance to business and development end-users through various channels, including phone, email, and a centralized ticketing system. This position demands a strong technical foundation in Windows and networking technologies, coupled with excellent communication skills. You will need to demonstrate patience with less tech-savvy users and thrive in a fast-paced environment where urgency and dependability are key. You will also enjoy a hybrid working model in an iconic London location with daily lunch offerings from a selection of vendors.

About Anaplan Anaplan builds AI-powered scenario planning and analysis tools that help businesses make smarter decisions. Over 2,400 organizations worldwide, including Fortune 50 leaders like Coca-Cola, LinkedIn, Adobe, LVMH, and Bayer, rely on Anaplan’s platform to stay competitive. Our teams share a strong commitment to client success and a culture that values innovation, diverse perspectives, and celebrating achievements at every level. We focus on strategic goals, value-driven work, and disciplined execution, creating space for growth, recognition, and connection. Role Overview: Principal Infrastructure Engineer Anaplan is hiring a Principal Infrastructure Engineer to lead the design and deployment of a multi-region HashiCorp Vault platform. This role serves as the Subject Matter Expert for secrets management and governance, supporting hundreds of engineers and global clients. This is a hybrid role based in London, with at least two days per week in the office. What You Will Do Architect, design, and implement a new multi-region HashiCorp Vault platform on public cloud infrastructure. Own the solution architecture, maintaining high-quality design documents and Architecture Decision Records (ADRs). Develop and test strategies to ensure platform resilience, including performance, Disaster Recovery (DR), and High Availability (HA). Act as the primary SME for Vault and modern secrets management, promoting best practices across the organization. Work closely with stakeholders, platform teams, and software engineers to integrate their services securely with the Vault ecosystem. Partner with Security to define and meet control requirements for the Vault platform, covering policy standards, privileged access, audit/evidence, and compliance needs. Lead regular security discussions and maintain a proactive security posture within the company.

Palantir Technologies is seeking an Edge Infrastructure Engineer in London to help develop and refine infrastructure solutions. This position involves working closely with teams from different disciplines to support the integration and performance of Palantir’s systems. Role overview This role focuses on building and optimizing infrastructure that supports Palantir’s products at the edge. Collaboration with engineers and other specialists is central to ensuring systems work together smoothly and deliver reliable results. Key responsibilities Develop and improve infrastructure solutions for edge environments Work with cross-functional teams to integrate new technologies and features Monitor and enhance system performance and reliability Location This position is based in London, United Kingdom.

Why Choose PlayStation?At PlayStation, we pride ourselves on being not just the best place to play, but also the best place to work. As a recognized global leader in entertainment, we proudly produce the PlayStation family of products and services, including PlayStation®5, PlayStation®4, PlayStation®VR, PlayStation®Plus, and critically acclaimed software titles from PlayStation Studios.We are dedicated to fostering an inclusive environment that empowers a diverse workforce. We welcome individuals who are passionate about innovation, technology, and gaming to explore our open positions and join our expanding global team.PlayStation is a brand under Sony Interactive Entertainment, a wholly-owned subsidiary of Sony Group Corporation.We are on the lookout for a talented Software Engineer to join our game integration platform, bridging gameplay and platform experiences! As a member of the Partners Platform team, you will work at the intersection of business and engineering on the PlayStation SDK Windows Delivery tooling.In this role, you will contribute to the development of the SDK Manager Windows Application, coordinating with business and engineering teams to enhance the relationship between SIE and our game development and publishing partners.Role Overview:We are seeking a skilled C# Software Engineer to design and develop Windows-based applications that facilitate the delivery and integration of SDK components for Sony PlayStation platforms. This position requires robust experience in C#, along with a solid understanding of C and C++ for low-level integration and performance-critical components.Key Responsibilities:Design, develop, and maintain Windows desktop applications using C# and the .NET framework.Create tools and interfaces to support the integration and delivery of PlayStation SDK components.Utilize native code (C/C++) to interface with low-level systems and SDK libraries.

Speechify seeks a Senior Software Engineer to focus on Windows and desktop applications. This role is based in London, United Kingdom. Role overview This position centers on designing and building software for Windows and other desktop platforms. The engineer will join a team dedicated to delivering applications that enhance the user experience. What you will do Design and develop software tailored for Windows and desktop environments Collaborate with a skilled team to deliver user-focused applications Create solutions that respond to evolving user needs and expectations

Join Hudson River Trading (HRT) as a Windows Systems Engineer within our dynamic Enterprise Engineering team. In this pivotal role, you will play a key part in scaling HRT’s global hybrid Windows deployment. You will develop advanced automation techniques, configuration-as-code, and infrastructure-as-code solutions to effectively manage a diverse fleet of high-performance user endpoints, mission-critical servers, cloud infrastructure, and secure remote computing environments worldwide. Your expertise will help streamline operations, enhance platform stability, and bolster the resilience of our Windows infrastructure through the design and implementation of automation strategies that proactively identify and resolve technical inefficiencies across both on-premises and Azure environments.The ideal candidate is a seasoned Microsoft technology engineer with a knack for problem-solving and the ability to thrive in a fast-paced setting. Exceptional communication and collaboration skills, along with a positive demeanor towards colleagues and internal customers, are essential for success in this role.

Join MUBI as a Senior Infrastructure EngineerMUBI is a renowned global streaming service, production company, and film distributor committed to celebrating exceptional cinema. Our mission is to create, curate, acquire, and promote visionary films that reach audiences worldwide. With passionate teams collaborating across cities like London, New York, Istanbul, Paris, Berlin, and Mexico, we strive to make great cinema accessible to everyone.We invite you to be part of our vibrant global team and contribute to our mission.Role OverviewThis is not your conventional DevOps or ML infrastructure role. As a Senior Infrastructure Engineer, you will build and deliver innovative software solutions, including internal tools, services, and automated processes that address real infrastructure challenges. Your work will encompass automated incident response, intelligent observability, and support ticket management. You will apply agentic patterns to navigate the complexities of operational environments instead of training models or managing GPUs.We are seeking a senior candidate who excels in system architecture, mentors fellow engineers, and leads by example. Your background should include hands-on experience in developing infrastructure applications and tools, demonstrating a willingness to explore new systems, take ownership of challenges, and drive solutions to fruition.Our infrastructure team adheres to SRE principles, focusing on building reliable, automated systems and minimizing operational toil. You will be responsible for developing and maintaining the platforms that empower our engineering teams to deploy, scale, and monitor their services. Your responsibilities will span from managing bare-metal CDN servers to Kubernetes clusters and AI-enhanced workflows.Join us in a small team with high autonomy and direct impact, working in a hybrid model (2-3 days a week in London), with remote work options available for exceptional candidates outside the city.

Join us at Solve Intelligence, where we are pioneering AI-driven infrastructure for the global Intellectual Property sector. We are seeking a talented Infrastructure Engineer to develop the secure and scalable systems that drive our innovative solutions. Your Role: As an Infrastructure Engineer, you will collaborate with a highly skilled engineering team in London. Your focus will go beyond server management; you will architect multi-region, high-performance systems capable of processing complex AI tasks.Key Responsibilities:Cloud Architecture: Design, implement, and optimize our AWS infrastructure using Terraform for maximum reliability, cost-effectiveness, and scalability.Global Deployment: Create infrastructure patterns to support multi-region deployments and isolated environments tailored for enterprise clients.Developer Efficiency: Build and maintain CI/CD pipelines (using GitHub Actions and Docker) that enable our team to deliver features swiftly and securely.Monitoring & Reliability: Implement observability practices using OpenTelemetry and Datadog to proactively identify and resolve issues before they affect users.AI Performance Optimization: Fine-tune autoscaling and network routing to efficiently handle resource-heavy LLM workloads with minimal latency. About Solve Intelligence: We are a rapidly growing startup reinventing the IP industry.Growth: Achieving 20-30% month-over-month revenue increases; currently serving over 200 global IP teams, including DLA Piper and various tech companies.Impact: Our users experience efficiency improvements of 50-90% through our AI solutions.Funding: Recently highlighted in Sifted, following our $40M Series B funding round, bringing our total investment to $55M from prestigious investors like Y Combinator, 20VC, and others. Your Team: Work alongside a founding group of AI PhDs and top-tier systems engineers.

Role overview Elliptic is hiring an AI Infrastructure Engineer in London, United Kingdom. This role focuses on building and supporting the technical foundation behind Elliptic's AI-driven financial technology products. What you will do Design and implement infrastructure for AI systems Maintain and improve the platforms that power Elliptic’s AI products Work with teams across the company to develop scalable, reliable solutions Monitor and optimize system performance to support product innovation

About Our TeamJoin the Applications Engineering team, a dynamic group that collaborates across research, engineering, product management, and design to deliver cutting-edge AI solutions for consumers and businesses alike.As a member of our team, you will play a vital role in managing the essential infrastructure that underpins products like ChatGPT and our API. This encompasses our Kubernetes clusters, infrastructure deployment, networking architecture, cloud abstractions, and much more.We are committed to learning from our deployments and spreading the advantages of AI while ensuring its responsible and safe application. For us, safety takes precedence over unrestricted growth.Role OverviewOur cloud infrastructure team is dedicated to constructing and sustaining infrastructure abstractions that empower OpenAI to deliver products efficiently and at scale.Key Responsibilities:Design and develop robust development and production platforms that ensure reliability and security at scale.Guarantee that our infrastructure is poised to scale for future demands.Foster a diverse, equitable, and inclusive environment that encourages openness, welcome, and the challenging of conventional thinking.Participate in the overall responsibility for system reliability, including an on-call rotation for critical incidents.Ideal Candidate Profile:5+ years of experience in building core infrastructure systems.Skilled in operating orchestration systems, particularly Kubernetes, on a large scale.Experience in creating abstractions over various cloud platforms.Pride in developing and managing scalable, reliable, and secure systems.Comfortable navigating ambiguity and adapting to rapid changes.About OpenAIOpenAI is a pioneering AI research and deployment organization committed to ensuring that general-purpose artificial intelligence serves the greater good of humanity. We continuously push the boundaries of AI capabilities and are focused on the safe deployment of these technologies through our innovative products. Our mission is to prioritize safety and human needs while embracing diverse perspectives, ensuring that our AI tools are developed responsibly.

Join our dynamic team at Shawbrook as a Cloud Infrastructure Engineer, where you will play a crucial role in designing, implementing, and maintaining our cloud infrastructure. Your expertise will help us leverage the latest technologies to deliver robust and scalable solutions that meet our clients' needs.

About UsAt Perlego, we are dedicated to revolutionizing education by making it accessible to everyone. In this digital era, we believe that learning should be available to all, anytime, anywhere. Knowledge should not be confined by exorbitant costs.Over the last seven years, our mission has focused on empowering students across the UK and Europe to access high-quality books. We aim to expand our reach globally, particularly into the US market, and create a platform that transcends traditional books by aiding students in studying more efficiently and effectively.Your RoleWe are in search of a seasoned Cloud Infrastructure Engineer with extensive experience in AWS services and monitoring tools. In this critical role, you will be responsible for ensuring the availability and reliability of our services. You will play a key role in promptly addressing issues, resolving incidents autonomously, and thriving in a dynamic environment.Key Responsibilities:Cloud Infrastructure Management:Administer and support our AWS infrastructure, emphasizing scalability, security, and reliability.Manage deployments and oversee CI/CD pipelines for both containerized (Docker/ECS) and serverless (AWS Lambda) applications.Implement effective backup and recovery strategies to minimize downtime.Oversee operational and analytical data stores, including Aurora MySQL, DynamoDB, and Databricks.Monitoring & Incident Management:Utilize tools such as Prometheus, Grafana, and AWS CloudWatch to monitor platform activity.Swiftly respond to alerts and incidents, independently resolving issues to maintain service uptime.Conduct post-incident reviews and enhance system resiliency through automation and monitoring improvements.Analyze network activity using AWS Security Hub and Cloudflare.Collaboration & Communication:Work collaboratively with cross-functional teams to implement platform enhancements.Demonstrate the ability to make swift decisions independently, especially when managing service incidents outside regular business hours.Support platform security and adhere to best practices for cloud security and compliance.Continuous Improvement:Automate repetitive processes to minimize human error and enhance efficiency.Continuously refine monitoring systems to ensure robust early detection and resolution capabilities.Identify and address potential performance bottlenecks.

Join the innovative team at Perplexity AI as an AI Infrastructure Engineer. We harness cutting-edge technologies, including Kubernetes, Slurm, Python, C++, and PyTorch, primarily within the AWS ecosystem. In this role, you will collaborate intimately with our Inference and Research teams to design, deploy, and enhance our extensive AI training and inference clusters.

Role Overview Checkatrade is seeking an IT Systems and Infrastructure Engineer (Fixed-Term Contract) to join the team in Moorgate, London. This role focuses on strengthening and maintaining the company’s IT backbone across hybrid cloud environments. The engineer will manage day-to-day operations, automate processes, enhance security, and support the scalability of Checkatrade’s infrastructure. Main Responsibilities Build and maintain secure, reliable infrastructure to support business operations and internal teams. Spot areas for improvement in infrastructure management and implement more effective solutions. Work closely with security, platform, and software engineering teams to deliver stable and dependable tools and systems. Ensure systems remain stable, secure, and easy to use for teams across the business. What We’re Looking For Solid experience managing IT infrastructure in Microsoft environments, including Windows Server, Active Directory, and Microsoft 365. Hands-on experience with identity and access management, especially using Okta for SSO, MFA, and user lifecycle management. Comfort working with cloud platforms like Azure, and familiarity with AWS or Google Cloud. Experience supporting modern workplace tools such as Google Workspace and managing endpoints across macOS, Windows, and ChromeOS. Good understanding of networking and security basics, including DNS, VPNs, and firewalls. Ability to automate tasks or workflows using scripting languages (PowerShell, Python, Bash) or tools like Okta Workflows or Zapier. Strong problem-solving skills and the ability to explain technical concepts clearly to different audiences. Location This position is based at Checkatrade’s Moorgate office in London.

Join a Pioneering CompanyAt Palantir, we are at the forefront of developing transformative software that empowers data-driven decisions and operations. Our platforms enable partners to revolutionize industries by facilitating groundbreaking discoveries in healthcare, enhancing supply chain resilience, and aiding critical social initiatives.The OpportunityAs a Backend Software Engineer at Palantir, you will play a crucial role in crafting scalable software solutions that redefine organizational data usage. You will engage in every phase of the product lifecycle—from conceptualization and design to prototyping and delivery. Collaborating closely with both technical and non-technical team members, you will gain deep insights into customer challenges and develop innovative solutions. Our culture promotes cross-team collaboration, allowing you to broaden your technical expertise across various technologies and product domains. You'll work independently while receiving support from a vibrant community that encourages your growth as a technical contributor and engineering leader.Our Product Development teams consist of small, focused groups of Software Engineers, each dedicated to distinct product facets. The infrastructure teams specialize in the foundational layers of our software stack, emphasizing database technologies, distributed systems, large-scale data architectures, security, and application infrastructure. As an infrastructure Software Engineer, you will produce high-quality code that underpins Palantir Foundry and Gotham, ensuring they are performant, secure, and scalable. Your work will empower critical applications utilized by researchers, engineers, analysts, and forecasters across the globe.We seek engineers who are passionate about tackling real-world challenges and enhancing the productivity of both developers and end-users. If you are driven to create reliable, high-performance systems and robust APIs, this position offers a unique chance to impact our products and their users significantly.Exclusive Learning ExperienceSuccessful candidates may also participate in Frontline, a distinctive program that embeds engineers directly with customers. This short-term assignment provides invaluable insights into user experiences and the complexities our customers encounter, differentiating it from traditional engineering roles.

Join Palantir Technologies as a Senior Backend Software Engineer focused on Infrastructure. In this crucial role, you will design and implement robust backend systems that power our cutting-edge software solutions. Collaborate with a talented team to develop scalable and efficient solutions that meet the needs of our clients.