IT Infrastructure Engineer

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.

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.

About SierraAt Sierra, we are on a mission to revolutionize customer experiences through our advanced AI platform. With our headquarters in San Francisco and expanding offices in key cities such as Atlanta, New York, London, Paris, Singapore, and Tokyo, we are committed to blending technology with human touch.Our corporate culture is defined by our core values: Trust, Customer Obsession, Craftsmanship, Intensity, and Family. These principles guide our daily operations and interactions, ensuring we create a supportive and productive environment.Our visionary co-founders, Bret Taylor and Clay Bavor, bring a wealth of experience from their previous leadership roles at major tech companies, including Google and Salesforce. Their expertise fuels our innovative spirit and commitment to excellence.Your RoleCreate and Implement AI Agents: You will design and deploy robust, high-performance AI agents that are integral to our business strategy. These are not mere prototypes; they are sophisticated, scalable systems actively utilized in production across various sectors including finance, healthcare, and e-commerce.Lead the Agent Development Life Cycle (ADLC): You will have the autonomy to oversee the full spectrum of the ADLC—from initial pilot projects to deployment and ongoing refinement. Your responsibility will be to build, optimize, and enhance AI agents in production, while setting standards for best practices in ADLC.Collaborate with Industry Leaders: You will engage directly with executives from leading enterprises to understand their critical business needs and develop AI agents that enhance their operations. Additionally, you will work alongside innovative startups, integrating AI agents into their solutions for transformative impacts.

Job DescriptionWe are on the lookout for a talented and seasoned Python Backend Engineer to join our dedicated Materials Science AI team. In this pivotal role, you will take full ownership of the AI Agent architecture, focusing on the development of formulation and search agents. Your mission will involve designing the 'brain' of our systems, orchestrating intricate workflows between Large Language Models (LLMs), internal skill modules, and scientific search APIs.You will work in close collaboration with cross-functional stakeholders, mentor junior engineers, and foster innovation in our Agentic backend services, ensuring seamless integration with our Vue-based frontend.

At Simular, we prioritize creating intuitive and engaging experiences for users interacting with our AI agents through our cross-platform desktop client. While it resembles a chat interface, it offers advanced functionalities including symbolic code generation, debugging tools, and execution panels. Our goal is to ensure that using this application is as seamless and enjoyable as the most refined productivity applications.We are in search of a dedicated Frontend/Application Engineer with a keen eye for design and a passion for user experience. This role involves crafting the very environments our users engage with daily, where your contributions directly influence the design and functionality of our applications.Key Responsibilities:Take ownership of our cross-platform desktop application, continuously evolving the client experience by designing and implementing user-friendly interfaces for AI interaction, code editing, and task management.Investigate new interaction patterns to simplify the use of powerful AI tools, making them feel intuitive and natural.Collaborate across various layers of development, from user-facing interfaces to system integrations with native APIs as required.There is potential to expand your work into mobile or web applications, owning your projects from UI through to business logic, including BFF APIs and backend components when necessary.Ideal Candidate:You possess the ability to create beautiful, functional applications with a strong commitment to user experience.Your experience spans some of the following areas: desktop frameworks, web/mobile development, or native APIs, but you are adaptable and open to working with various technology stacks.You have engaged in personal projects or side applications that exemplify your design sensibility and ownership.Your enthusiasm for both design intricacies and technical depth sets you apart.Bonus points for having a portfolio of design-focused applications, experience in bridging web and native technologies, or prior work on developer tools or productivity software.

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.

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 OKX as a Senior/Staff Android Software Engineer and play a vital role in shaping the future of crypto. You will be responsible for developing and maintaining our core OKX app, which serves millions of users daily. Collaborating with cross-functional teams, you will identify customer needs and implement high-quality features through rapid iterations. This position offers a unique opportunity to gain insights into the complete lifecycle of crypto mobile applications, including professional and retail trading, asset management, and wallet functionalities.

About OKX:At OKX, we envision a future transformed by cryptocurrency, empowering individuals with newfound freedom. As a premier cryptocurrency exchange and the innovator behind the OKX Wallet, we provide millions with seamless access to crypto trading and decentralized applications (dApps). Trusted by numerous large institutions, our platform is both safe and reliable, bolstered by our Proof of Reserves. With offices worldwide, we uphold core values: We Before Me, Do the Right Thing, and Get Things Done. These principles shape our culture, enhance our processes, and create a welcoming, rewarding, and diverse environment for every member of the OKX team. About the Team:As a Mobile Software Engineer, you will play a vital role in developing and maintaining the core OKX app, which boasts millions of active users daily. Collaborating closely with design, product, and engineering teams, you will identify user needs and deliver high-quality features through rapid iterations. This position offers you the chance to gain comprehensive insights into the lifecycle of crypto mobile applications, including professional/retail trading, asset management, and wallet functionalities.

About the RoleJoin our innovative team as a Senior Software Engineer specializing in ML Infrastructure: Development Enablement. Our goal is to create a seamless development environment that enables our researchers and engineers to push the boundaries of deep learning models for autonomous driving.We oversee a high-performance Cloud Development Environment (CDE) platform designed to support standardized, efficient ML development workspaces. In this pivotal role, your contributions will be two-fold:Platform Ownership: You will take charge of our CDE platform, ensuring its scalability, reliability, and smooth integration into the ML workflow.Agentic Evolution: You will spearhead the transition to Agentic ML Workflows, architecting AI Agents that serve as force multipliers—automating debugging processes, optimizing resource usage, and accelerating the transition from code to trained models.What You’ll Be DoingScale & Evolve the Dev Platform: Lead engineering initiatives to enhance our existing CDE platform, ensuring it meets the stringent demands of large-scale ML experimentation.Architect AI Agents: Design and implement agents powered by LLM capable of managing the ML lifecycle—from automated code suggestions and log analysis to autonomous debugging of distributed training jobs.Infrastructure Integration: Create connections between AI agents and our core infrastructure, ensuring safe and effective interaction with Kubernetes, Ray, and AWS.Collaborative Automation: Collaborate with ML Engineers to identify obstacles to productivity and build solutions, such as agents that suggest fixes for common PyTorch distributed training errors.Champion Engineering Excellence: Introduce software engineering best practices to the rapidly evolving landscape of LLM development, including the establishment of evaluation frameworks for agent performance, reliability, and security.Mentor & Lead: Serve as a subject matter expert in Agentic AI within the infrastructure team, mentoring junior engineers and influencing our long-term technical vision.

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.

Join OKX as a Principal Engineer specializing in Agent Infrastructure and Memory Architecture. In this pivotal role, you will lead the design and implementation of scalable infrastructure solutions, leveraging cutting-edge technologies to optimize performance and reliability. Your expertise will be critical in shaping the future of our agent systems, ensuring high availability and efficiency.

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 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.

Join Assurity Trusted Solutions (ATS), a proud subsidiary of the Government Technology Agency (GovTech), where we are committed to fostering trust and collaboration in a dynamic digital landscape. For over a decade, ATS has delivered a broad spectrum of products and services, including infrastructure and operational services, authentication, governance, assurance services, and managed processes. We collaborate closely with GovTech, government agencies, and commercial partners to mitigate cyber risks and enhance security frameworks. We are seeking an enthusiastic Infrastructure Engineer (Backup and Automation) to be a key member of our team! Your responsibilities will include:Contributing to the L2 team responsible for enterprise backup solutions, storage, and virtualization technologies.Managing capacity and optimizing the hyper-converged virtualized platform to support both current and future workloads.Implementing automated provisioning and scaling of servers, along with compliance checks using automation tools.Evaluating and developing backup strategies and policies to enhance backup performance and ensure effective system/data recovery.Overseeing supplier and contractor management.Proactively identifying opportunities to improve operations and streamline workflows while fostering collaboration across teams.Adopting and reviewing industry best practices for Government IT infrastructure.Ensuring project implementations and operations align with Government technology standards and policies.

Join our dynamic team at ncs3 as an Infrastructure Engineer. In this pivotal role, you will be responsible for designing, implementing, and maintaining our IT infrastructure to ensure optimal performance and security. You will work closely with cross-functional teams to develop innovative solutions that meet our business needs. Your expertise will help us drive efficiency and enhance our technological capabilities.

Join our innovative team as an Infrastructure Security Engineer, where your expertise will be invaluable in designing, building, and maintaining robust infrastructure security services. You will play a vital role in ensuring the reliability, availability, and security of our infrastructure platform by implementing advanced automation, effective monitoring, and rapid incident response strategies. A strong understanding of IT architecture, cybersecurity practices, and site reliability engineering (SRE) is essential, along with analytical skills to troubleshoot and resolve security incidents efficiently.

Join Activate Interactive Pte Ltd, a premier technology consultancy located in the heart of Singapore, with operations extending to Malaysia and Indonesia. We specialize in delivering high-quality, cost-effective, and transformative application development solutions, including mobile and web applications as well as cloud technologies that eliminate technological barriers and enhance business productivity.At Activate, we are dedicated to making a positive difference in the lives of individuals and the environment through innovative technology solutions. We foster a supportive workplace culture that empowers our team members to realize their full potential, driving continuous innovation.As we expand our talented team, we invite passionate individuals who are excited about making a meaningful impact through mobile and web technologies to apply.The Co-Development Business Unit is seeking a skilled Infrastructure Engineer to join our team.This position involves working closely with various Singapore Government Agencies.Contract Duration: 1 yearKey Responsibilities:Design, deploy, and optimize robust cloud infrastructure solutions focusing on security, performance, and cost-effectiveness. Leverage cloud-native technologies, automate infrastructure deployment, and ensure system resilience through effective high availability and disaster recovery strategies.Utilize Infrastructure as Code (IaC) tools, such as Terraform and AWS CloudFormation, for the design, deployment, and maintenance of cloud infrastructure and services.Implement and manage Continuous Integration/Continuous Deployment (CI/CD) pipelines with third-party or cloud-native tools to streamline deployment and automation processes.Monitor and troubleshoot cloud environments to maintain high availability, ensure disaster recovery, and optimize performance.Adhere to security best practices and ensure compliance with industry standards by managing IAM policies, encryption, and network security controls.Configure and manage cloud networking, optimize traffic routing, and enhance connectivity solutions.