Cloud Infrastructure Engineer with PKI Expertise

About ClickHouseRanked on the prestigious 2025 Forbes Cloud 100 list, ClickHouse stands as a trailblazer in the rapidly evolving private cloud sector. With a remarkable base of over 3,000 clients and an astonishing annual recurring revenue (ARR) growth exceeding 250% year-on-year, ClickHouse excels in delivering real-time analytics, data warehousing, observability, and AI workloads.The company’s relentless growth trajectory was recently underscored by a successful $400M Series D funding round. In just the last quarter, notable clients such as Capital One, Lovable, Decagon, Polymarket, and Airwallex have embraced our platform or expanded their existing deployments. These clients join an esteemed roster of AI pioneers and global brands, including Meta, Cursor, Sony, and Tesla.Join us in our mission to revolutionize data utilization for businesses. Be part of our exciting journey!About the TeamThe Cloud Infrastructure Engineering team is responsible for constructing and overseeing the essential components of the ClickHouse Cloud data plane from end to end. This encompasses compute, networking, security, and a multi-cloud, multi-region architecture that ensures a dependable and scalable managed ClickHouse experience for our customers. We are seeking exceptionally skilled and experienced cloud infrastructure software engineers to join our team, who will play a pivotal role in designing, deploying, and maintaining our infrastructure.

The CompanyArta Finance is on a bold and fulfilling mission to empower individuals worldwide to achieve financial success. By harnessing advanced AI and cutting-edge digital tools, which were once exclusive to ultra-high-net-worth individuals, Arta makes these resources accessible to a diverse global audience. Imagine having your own digital family office, merging intelligent investment strategies, alternative asset opportunities, private market access, and smart automation to effortlessly grow and safeguard your wealth. Our core values revolve around trust, teamwork, and adaptability.The RoleAs a Senior Cloud Infrastructure Engineer, you will be responsible for designing, developing, and maintaining a resilient infrastructure that spans the entire technology stack—from user-serving servers to data pipelines, storage systems, trading platforms, and research infrastructure. Your critical contributions will support both real-time and batch workflows, ensuring scalability, performance, and high reliability for our mission-critical systems.This is an individual contributor position, where your expertise will guide various initiatives in collaboration with cross-functional teams.What You Will DoDesign, develop, and maintain scalable infrastructure for real-time and batch workflows, emphasizing high-throughput and low-latency data processing for autonomous trading, quantitative research, and reliable user-serving servers.Work closely with frontend, research, and trading teams to ensure that the infrastructure and data pipelines meet performance, precision, and usability requirements.Integrate third-party platforms and data providers, ensuring secure and reliable API/data stream ingestion while tackling complex external data integration challenges.Proactively identify and resolve bottlenecks and inefficiencies in distributed systems, optimizing performance and resource utilization.Take ownership of deployment pipelines and production operations to guarantee high availability, fault tolerance, and observability of critical services.Architect and implement scalable systems that support high-throughput, low-latency data processing essential for autonomous trading and quantitative research. Ensure data quality, consistency, and traceability through thorough testing, validation, and monitoring pipelines.Uphold security best practices and collaborate with internal stakeholders to meet compliance and auditing standards.

Join a vibrant team dedicated to the exploration, design, management, and optimization of our on-premises cloud infrastructure platforms and services. As a Cloud Infrastructure Engineer, you will collaborate with skilled cloud infrastructure engineers to implement robust cloud networking, storage solutions, virtual machines, and security measures. A solid understanding of cloud infrastructure technologies, architectural principles, and site reliability engineering (SRE) is essential for success in this role.

As a leading innovator, Simular is creating the future of computer user agents, developing AI systems that can operate your computer on your behalf. Our backend infrastructure powers everything from live VM orchestration to agent planning and execution.We seek a versatile backend/infrastructure engineer who excels in uncertain environments, possesses strong architectural instincts, and is eager to take ownership of substantial and evolving components of our system. This role is not limited to traditional 'DevOps' or 'API engineer' functions; you'll play a pivotal role in shaping our platform's scalability and evolution for years to come.Key ResponsibilitiesArchitect and scale the systems that support Simular Cloud and our cross-platform agents.Oversee essential backend services, including APIs, data flows, billing systems, observability, and deployment pipelines.Address complex infrastructure challenges such as VM orchestration, reproducibility, parallel execution, and reliability.Identify opportunities to split or refactor services and lead that evolution.Explore new avenues as products expand, including microVMs, multi-agent orchestration, fine-tuned model endpoints, and community task galleries.Collaborate with product teams and researchers to transform ideas into production-ready systems.Ideal Candidate AttributesProficient in programming fundamentals with solid skills in languages such as Python, Go, Rust, or similar.Experience with some aspects of cloud infrastructure, distributed systems, virtualization, and CI/CD; most importantly, the ability to learn and adapt to new technologies as required.Think architecturally, understanding when to hack and when to design for long-term success.Comfortable managing large, ambiguous problems from start to finish.Bonus: Experience with GPU scheduling, large-scale ML infrastructure, or scaling SaaS applications.

Role Overview Airwallex is hiring a Cloud Network Engineer focused on infrastructure in Singapore. This position shapes the design, deployment, and upkeep of cloud-based network systems that connect our global teams and services. What You Will Do Design and implement cloud network architectures to support business needs Maintain and optimize network performance for reliability and speed Strengthen network security and monitor for vulnerabilities Support seamless connectivity across Airwallex’s international operations Impact Your work will help Airwallex deliver secure and high-performing financial services around the world.

Atlas is revolutionizing the restaurant industry by developing a comprehensive operating system designed to streamline the processes of starting, managing, and expanding restaurants, whether online or offline. The talented team at Atlas previously founded Grain, a venture-backed online restaurant that achieved millions in revenue. Today, Atlas empowers restaurants with innovative solutions such as online storefronts, POS systems, third-party logistics, and seamless integrations with food platforms and AI technologies.Our current clientele includes notable names like SaladStop, Killiney, and Haidilao, and we are continuously bringing new brands into our ecosystem, including Casa Vostra, Artichoke, and Wewa, adding fresh restaurants every week.Our team and investors hail from prestigious companies such as Y Combinator, Global Founders Capital, Grain, Accenture, Microsoft, Udacity, McKinsey, and Salesforce.Explore our hiring memo here.Role OverviewThe Product Infrastructure Engineers at Atlas are crucial in propelling every engineering effort forward. You will construct the systems that enhance the safety, speed, and predictability of our shipping processes.Your work will be situated at the crossroads of infrastructure and product, with the systems you design powering the fundamental experiences that span compute, databases, APIs, deployment pipelines, and measurement frameworks. Your contributions will not only support scalability; they will shape the evolution of Atlas as a product.Key ResponsibilitiesDesign and develop robust infrastructure for multi-tenant computing, databases, queuing systems, and observability tools.Enhance deployment pipelines, implement feature gating, and facilitate canary rollouts to ensure safe and rapid shipping.Scale shared services and core platform components utilized across the Atlas ecosystem.Develop internal tools for monitoring, metrics, and experimentation to foster learning and reliability.Collaborate with product engineers to ensure scalability, performance, and fault tolerance are prioritized from the outset.Reassess abstractions and defaults that could hinder speed or resilience.Required Skills and Experience6+ years of experience in Software Engineering or Site Reliability Engineering (or Infrastructure Engineering).Proficiency with container orchestration platforms and tools such as Docker and Kubernetes.Experience with infrastructure as code and configuration management tools.Strong incident management skills and experience leading incident responses.Familiarity with Google Cloud Platform services and tools.Knowledge of modern observability platforms like Prometheus, Grafana, and ScoutAPM.Experience with Ruby on Rails and PostgreSQL is a plus.Ideal Candidate AttributesYou value speed and craftsmanship equally.You have created solutions that enhance both the product and the development process.You possess a systems-oriented mindset, understanding how code, data, and infrastructure influence product development.

Role overview Airwallex is hiring a Senior Software Engineer to work on the Cloud Platform in Singapore. This role centers on designing and building cloud solutions that support and improve the company’s global payment infrastructure. What you will do Design and develop cloud-based systems for payment processing Work with teams across engineering, product, and operations to integrate new features Focus on performance optimization and system reliability Location This position is based in Singapore (SG).

Join Us as a Cloud Infrastructure Engineer / DevOps Engineer!Are you passionate about optimizing and securing cloud infrastructure across the Asia-Pacific region? At brixio, we are seeking a skilled DevOps Engineer to be a key player in our innovative team. Your expertise will be essential in managing our cloud infrastructure, particularly with a focus on the Chinese market.Key Responsibilities:Cloud Infrastructure Management:Manage and enhance the cloud infrastructure for the APAC region, with a dedicated focus on China.Support the migration of on-premises servers to the Cloud.Work closely with the APAC Cloud Infrastructure Manager to embed security considerations into all projects.Implement automation strategies to optimize operational expenditures in the Cloud.Cybersecurity and Compliance:Establish and uphold guidelines and standard operating procedures for APAC infrastructure.Collaborate on defining and executing IT infrastructure strategies.Address cybersecurity, privacy, and data protection incidents in collaboration with helpdesk and global operations teams.Design and deploy SecDevOps processes and automation solutions.Ensure compliance with industry standards and introduce innovative solutions to enhance infrastructure design.

Assurity Trusted Solutions (ATS), a wholly owned subsidiary of the Government Technology Agency (GovTech), has established itself as a reliable partner in providing a diverse range of products and services. Over the past decade, ATS has successfully delivered infrastructure and operational services, authentication solutions, governance and assurance expertise, along with managed processes. In a rapidly evolving digital and cyber landscape, where trust and collaboration are paramount, ATS is committed to fostering beneficial business outcomes through strategic partnerships with GovTech, government entities, and commercial collaborators to mitigate cyber threats and enhance security frameworks.Key Responsibilities:Collaborate with Product Owners, internal engineering teams, and Product Principals to coordinate the operations of Digital Experience Management and ITSM tools.Educate and train ICT Support Engineers on the effective use of Digital Experience Management and ITSM tools.Partner with Product Owners to implement and oversee application observability in Digital Experience Management tools.Lead a team of Operations Engineers in managing change, release, incident, and problem management processes related to Digital Experience Management tools.Ensure timely resolution of requests and queries.Enhance Endpoint user experience through a data-driven strategy.Support Endpoint incident response and recovery efforts using a data-driven approach.Drive operational improvements by adopting monitoring, automation, scripting, and alerting tools.Document requirements and specifications to meet the needs of all Public Service agencies.

Join Assurity Trusted Solutions (ATS), a proud subsidiary of the Government Technology Agency (GovTech), as we continue to lead in innovative solutions within a rapidly evolving digital and cyber landscape. For over a decade, ATS has been a trusted partner, delivering a diverse range of products and services, from infrastructure and operational services to authentication, governance, and assurance services. Collaborating closely with GovTech, government agencies, and commercial partners, we strive to mitigate cyber risks and enhance security measures.Key Responsibilities:• Collaborate with Product Owners, internal engineering teams, and Product Principals to manage a variety of endpoint management tools, such as:Windows AutopilotIntuneApplication controlScripting and automationVirtual Desktop InfrastructureMicrosoft Graph API• Coordinate with Central ICT Infra teams to manage the on-prem components of these platforms.• Execute change, release, incident, and problem management processes.• Ensure prompt resolution of requests and queries.• Conduct incident response and recovery, analyzing root causes and submitting RCA reports.• Enhance operational effectiveness by implementing monitoring and alerting tools.• Document requirements and specifications to meet the needs of all Public Service agencies.

Join our innovative team at NCS as a Senior Infrastructure Solutions Engineer! We are looking for passionate individuals who strive to elevate technology and foster collaboration.If you are dedicated to achieving excellence, eager to showcase your expertise, and enthusiastic about merging people with technology, we invite you to explore this exciting opportunity with us! Position OverviewAs a Senior Infrastructure Solutions Engineer, you will play a pivotal role in presales solutioning and executing enterprise infrastructure projects. Your focus will be on VMware Infrastructure, VMware Cloud Foundation (VCF), and various public cloud platforms. This position demands proficiency in designing, deploying, and managing hybrid and multi-cloud environments, alongside skills in integrating and automating infrastructure components to support modern application workloads. Key Responsibilities:Presales Solutioning:Collaborate with solution architects and sales teams to tailor infrastructure solutions that meet diverse client needs.Craft detailed technical proposals, solution blueprints, and impactful presentations for client engagements.Conduct thorough technical reviews to ensure solution quality and alignment with desired business outcomes.Engage in technical solution reviews to assess quality, feasibility, and risks before proposal submission.Implementation & Delivery:Lead a team in the deployment and configuration of VMware Infrastructure, including vSphere, NSX, vSAN, and VMware Cloud Foundation across private, hybrid, and multi-cloud environments.Integrate and manage public cloud platforms such as AWS, Microsoft Azure, and Google Cloud Platform, ensuring smooth workload migration and hybrid connectivity.Automate infrastructure provisioning and lifecycle management using tools like Terraform and Ansible.

Join CoreWeave as a Senior Cloud Support Engineer and be at the forefront of the AI revolution! In this pivotal role, you will empower clients to harness our cutting-edge Kubernetes-powered HPC cloud infrastructure. Collaborate with engineers and researchers to troubleshoot issues affecting high-stakes, mission-critical applications and advanced AI training workloads. Your expertise will be essential in ensuring optimal performance and reliability for our customers, placing you at the heart of transformative technologies that are reshaping industries worldwide.

Assurity Trusted Solutions (ATS), a dedicated subsidiary of the Government Technology Agency (GovTech), has been a reliable partner for over a decade, providing a diverse range of products and services. Our offerings include infrastructure and operational services, governance and assurance services, as well as managed processes. In an ever-evolving digital and cyber landscape, where trust and collaboration are paramount, ATS is committed to fostering productive business outcomes through effective collaboration with GovTech, government agencies, and commercial partners to address cyber risks and enhance security frameworks.We are seeking a skilled Cloud Infrastructure Engineer with expertise in Endpoint and Device Management. If selected, you will be offered a direct two-year contract with our team.Key Responsibilities:Administer and sustain Microsoft Endpoint Configuration Manager (MECM) for software deployment, patch management, and device compliance.Execute imaging and reimaging tasks for desktops, laptops, and servers, ensuring adherence to standardization and security compliance.Provision new and existing endpoints and servers, encompassing installation, configuration, and lifecycle management.Oversee and troubleshoot Active Directory Group Policies (GPOs) to ensure optimal functionality and compliance.Provide Level 2 support for desktop, hardware, software, and network-related incidents.Conduct Quality Assurance testing for modifications to end-user equipment (e.g., security patching, application version upgrades).Collaborate with the IT support team to resolve escalated issues and liaise with vendors for hardware repairs when necessary.Possess hands-on experience with Windows 10 and the latest Windows 11 technologies.Evaluate and recommend hardware and software upgrades (e.g., Tech Refresh) for end-user equipment.Demonstrate a solid understanding of VDI Technology.Maintain detailed documentation of processes, configurations, and troubleshooting steps.Exhibit excellent problem-solving, analytical, and multitasking abilities.

As a Senior Infrastructure Engineer Consultant at Thoughtworks, you will play a pivotal role in empowering our clients to design and enhance the infrastructure systems that underpin their software delivery. You will thrive in collaborative settings, working alongside diverse teams to address complex challenges and develop innovative solutions that align with organizational goals. Your blend of technical acumen and adaptive thinking will drive improvements, ensuring the highest standards of technical quality and operational efficiency. You will guide clients in adopting agile methodologies and the DevOps mindset, fostering a culture of collaboration and continuous improvement.

At Exa, we are pioneering a groundbreaking search engine dedicated to powering every AI application. Our team is committed to building a robust infrastructure that enables us to crawl the web, develop cutting-edge embedding models for indexing, and create exceptionally high-performance vector databases using Rust for efficient searching. Our resources include a significant $5M H200 GPU cluster, which routinely activates tens of thousands of machines.The Infrastructure Team at Exa is responsible for creating the foundational tools and infrastructure that sustain all our systems. We are seeking talented infrastructure engineers to help us build the 'machine that builds the machine,' allowing our engineering organization to operate at maximum speed. This may involve developing GPU cluster orchestration with Kubernetes, executing map-reduce batch jobs on Ray, or crafting the most advanced observability tools available.

Assurity Trusted Solutions (ATS) operates as a dedicated subsidiary of the Government Technology Agency (GovTech). For over a decade, we have established ourselves as a trusted partner in delivering a robust array of products and services, including infrastructure and operational services, authentication solutions, governance and assurance services, and managed processes. In today's fast-paced digital landscape, where trust and collaboration are paramount, ATS is committed to fostering advantageous business outcomes through strategic partnerships with GovTech, government agencies, and commercial collaborators to effectively mitigate cyber risks and enhance security frameworks.We are excited to invite a talented Cloud Infrastructure Engineer to our team. This role focuses on managing and optimizing hybrid cloud infrastructure for Whole of Government digital services. Responsibilities include overseeing hyper-converged infrastructure, physical servers, backup services, and implementing cloud solutions across various Cloud Service Providers such as Azure and AWS.Key Responsibilities: Design, implement, and maintain infrastructure solutions on both on-premises and cloud platforms (Azure, AWS), ensuring maximum performance and reliability for Whole of Government digital services. Act as a technical subject matter expert for compute, storage, backup, and virtualization technologies, providing architectural insights and best practices for infrastructure solutions. Develop and maintain Infrastructure as Code (IaC) utilizing tools like Terraform, CloudFormation, and Azure Resource Manager templates, along with implementing robust CI/CD pipelines for seamless infrastructure deployment. Lead the integration of security measures and resource optimization across Windows Server and Linux environments, ensuring adherence to government technology standards and policies. Offer technical leadership in diagnosing complex infrastructure issues and collaborate with development teams, stakeholders, and vendors. Create and sustain detailed technical documentation, including architecture diagrams, operational procedures, and disaster recovery strategies. Engage in on-call rotation to provide essential infrastructure support and uphold service reliability.

Role overview Cygnify is seeking a Senior Cloud Architecture Engineer based in Singapore. This role focuses on designing, building, and enhancing secure cloud networking architectures across hybrid and multi-cloud environments, with particular emphasis on AWS and Alicloud. The position supports new project launches by delivering agile, scalable, and automation-driven network solutions. Main responsibilities Design and develop cloud network architectures for both new and existing platforms. Maintain performance, availability, and security for networking components, including VPCs, Transit Gateways, Load Balancers, and CDNs. Automate cloud network provisioning and configuration using Infrastructure as Code tools. Monitor and optimize network costs and data transfer, especially for projects with experimental or variable workloads. Advise cross-functional teams and support rapid prototyping efforts. Collaborate with internal teams to shape the roadmap for AI initiatives and multi-cloud deployments. Lead vendor evaluations and the implementation of new solutions, including AI frameworks and cloud automation tools. Manage RFP and RFI processes, vendor relationships, procurement, and legal interactions. Support team growth by sharing expertise in cloud technologies. Work with regulators and industry partners to build new relationships as needed.

Join Our Team at AirwallexAt Airwallex, we provide a groundbreaking unified payments and financial platform tailored for global enterprises. Our innovative blend of proprietary technology and software empowers over 200,000 businesses worldwide, including industry leaders like Brex, Rippling, Navan, Qantas, SHEIN, and many more. We offer fully integrated solutions that simplify the management of business accounts, payments, spend oversight, treasury functions, and embedded finance on a global scale.Founded in Melbourne, our vibrant team of over 2,000 talented individuals across 26 offices worldwide is dedicated to creating the future of financial services. With a valuation of US$8 billion and support from leading investors such as T. Rowe Price, Visa, Mastercard, Robinhood Ventures, Sequoia, Salesforce Ventures, DST Global, and Lone Pine Capital, Airwallex is at the forefront of revolutionizing global payments. If you’re ready to take on the most ambitious projects of your career, we invite you to join us.What We Look ForWe seek builders with a founder-like mentality who aspire to create a substantial impact, experience rapid personal growth, and take true ownership of their work. You should possess strong expertise and analytical skills, driven by our mission and operating principles. You are quick to act with sound judgment, deeply curious, and capable of making decisions based on first principles, balancing speed with thoroughness.Collaboration and humility are key traits you bring to the table as you transform innovative ideas into tangible products. You thrive in an environment that encourages the use of AI for smarter work and faster problem-solving. Here, you'll face complex challenges alongside exceptional colleagues and advance your career as we redefine the landscape of global banking. If this resonates with you, let's embark on this journey together.Your Role: Contribute to Our IAM & Account Infrastructure TeamBecome a vital member of our Identity and Access Management (IAM) and Account team, where your contributions will significantly enhance our identity solutions and strengthen our account infrastructure. We are eager to welcome passionate engineers ready to engage in pioneering projects that improve the availability, scalability, and security of our platform. Collaborate globally with product managers, designers, and fellow engineers to deliver outstanding IAM solutions that protect businesses and optimize our account infrastructure for Airwallex's remarkable growth.

As a Senior Cloud Engineer, you will play a pivotal role in managing cloud operations within our delivery team. This position involves executing daily cloud operations and implementing cloud solutions in various technical customer engagements, which may include basic operations, administration, and specific implementation projects or pilots in the cloud environment. We are seeking a Cloud Engineer with a proven track record in delivery roles, strong skills in implementation discussions, hands-on experience, excellent client handling capabilities, and a collaborative spirit. You will be responsible for providing solutions and technical expertise to your team members and client accounts.Responsibilities:Implement and manage complex cloud network architectures across AWS and Azure ecosystems, ensuring optimal performance and security. Facilitate the migration of network services and cloud workloads while minimizing downtime and disruption.Demonstrate familiarity with AWS/Azure native components such as firewalls, SaaS connectivity, NLB, ELB, GWLB, NAT Gateways, Transit Gateways, API Gateways, Control Tower, and CloudFront.Design, implement, test, secure, manage, and maintain infrastructure network systems.Utilize Infrastructure as Code (IaC) tools, particularly Terraform, for infrastructure deployment and management.Oversee project planning, execution, and supervision, ensuring timely completion within the budget. Collaborate closely with various teams to foster a cooperative environment that supports knowledge sharing and project success.Maintain comprehensive documentation throughout the project lifecycle, including network diagrams, configuration details, and operational procedures. Effectively communicate complex technical concepts to non-technical stakeholders.Conduct thorough testing after migration to validate the functionality and performance of the newly implemented network. Provide ongoing support post-migration, including troubleshooting network issues and optimizing network performance.Work closely with the Team Leader to achieve system delivery milestones.Provide technical documentation support to project and solutions teams, and hand over as-built documentation to the maintenance support team.Engage with back-line support and vendors to diagnose and resolve technical issues.Assist in the daily operations of the system delivery team.Perform additional technical duties as required.Respond promptly to incidents and service requests (SRs).Administer NAC ClearPass for security posture enforcement.Analyze network utilization patterns to recommend and implement corrective and preventive measures.Provide standby support during network upgrades.