Senior Infrastructure Support Engineer - AWS

Qube Research & Technologies

QRT is a global quantitative and systematic investment manager, operating across all liquid asset classes. We are a data- and technology-driven organization applying scientific methods to investing. Our collaborative culture and focus on innovation enable us to solve complex challenges and deliver high-quality returns for our investors. The AWS Cloud Engineering Team provides a scalable, performant and best practice platform for QRT’s application and core teams to utilize in deploying cloud native services. This team is critical in ensuring that applications are built on a strong AWS foundation from the perspective of governance, security and connectivity. Your future role within QRT We are seeking a Network Operations Engineer to support the ongoing operation, scalability and continuous improvement of our global AWS network. This role focuses on implementing change safely and consistently at scale, improving automation, and providing operational support to internal stakeholders. You will work closely with senior engineers, application teams, security and IT to ensure reliable, well-governed and observable network services in a production-sensitive environment. The role is expected to involve the following activities: * Implement changes across our global AWS network using Infrastructure-as-Code * Maintain and enhance Terraform modules to ensure scalable, repeatable and consistent network deployments * Develop and maintain automation tooling using Python and Bash * Execute controlled changes via CI/CD pipelines with appropriate validation and peer review * Assess and manage the risk associated with network changes, ensuring appropriate testing, impact analysis and rollback strategies are in place * Support and resolve network-related tickets raised by internal stakeholders in a timely and professional manner * Troubleshoot connectivity and configuration issues within AWS environments using both native and third-party tooling * Contribute to operational documentation, runbooks and continuous process improvement This role offers strong growth opportunities into deeper cloud networking, platform engineering and automation. Your present skillset * 2–4 years of experience in a cloud, infrastructure or network operations engineering role * Good understanding of networking fundamentals including IPv4, DNS, TCP/UDP and routing concepts * Practical experience with AWS networking services such as VPC, Transit Gateway and Route53 * Hands-on experience using Infrastructure-as-Code, ideally Terraform * Experience developing automation using Python and/or Bash * Ability to troubleshoot issues methodically and independently within production environments * Strong awareness of production risk and high-availability considerations * Experience handling tickets and communicating effectively with internal customers * Comfortable working in a fast-paced, dynamic environment * Desirable experience * Experience operating AWS networking at scale across multiple environments or region * Familiarity with CI/CD pipelines and automated deployment workflows * Exposure to IP address management tooling such as AWS VPC IPAM or Infoblox * Load balancing technologies (ALB, NLB) * Logging and observability tooling (CloudWatch, Grafana) * Exposure to newer AWS networking services such as VPC Lattice  QRT is an equal opportunity employer. We welcome diversity as essential to our success. QRT empowers employees to work openly and respectfully to achieve collective success. In addition to professional achievement, we offer initiatives and programs to enable employees to achieve a healthy work-life balance.

Qube Research & Technologies

Qube Research & Technologies (QRT) is a global quantitative and systematic investment manager, operating in all liquid asset classes across the world. We are a technology and data driven group implementing a scientific approach to investing. Combining data, research, technology, and trading expertise has shaped our collaborative mindset, which enables us to solve the most complex challenges. QRT’s culture of innovation continuously drives our ambition to deliver high quality returns for our investors. Your future role within QRT You will join the Security team, working closely with Software Engineers and Infrastructure teams to embed security into the design, development, and operation of systems across cloud services, business applications, and core infrastructure. * Support the implementation and operation of product security controls across cloud services, core infrastructure, and business applications on Windows and Linux platforms * Work with engineering teams to integrate security into system design and development, applying practical approaches suitable for fast-moving environments * Contribute to secure software development practices, including supporting security reviews across languages such as Python, C++, Rust, Go, and Kotlin/Java * Perform threat modelling, vulnerability assessments, and security code reviews with guidance from senior team members * Assist with integrating and operating security tooling (e.g., SAST, DAST, dependency scanning) within CI/CD pipelines and runtime environments * Identify security risks and contribute to remediation and mitigation plans with engineering teams * Perform vendor security reviews to assess third-party security practices against internal standards * Build your product security knowledge and share learnings with peers across engineering teams Requirements: * 3–5 years of experience in product security, application security, software engineering, or a related role * Hands-on experience with secure coding practices and at least one of: Python, C++, Rust, Go, Kotlin/Java * Solid technical foundation in software development, system architecture, or infrastructure, with a strong interest in security * Working knowledge of security principles and common vulnerabilities affecting software, cloud platforms, and business applications * Experience securing Windows and/or Linux-based systems * Practical experience with at least one cloud platform (AWS or Microsoft Azure), ideally in hybrid environments * Familiarity with threat modelling, vulnerability management, and risk assessment concepts * Experience using or integrating security scanning tools into development workflows and/or CI/CD pipelines * Strong problem-solving skills, clear communication, and willingness to learn in a fast-paced environment * Exposure to low-latency or performance-sensitive systems * Experience in financial services and/or regulated environments * Interest in automation and security tooling development   QRT is an equal opportunity employer. We welcome diversity as essential to our success. QRT empowers employees to work openly and respectfully to achieve collective success. In addition to professional achievement, we are offering initiatives and programs to enable employees achieve a healthy work-life balance.

Qube Research & Technologies

Qube Research & Technologies (QRT) is a global quantitative and systematic investment manager, operating in all liquid asset classes across the world. We are a technology and data driven group implementing a scientific approach to investing. Combining data, research, technology, and trading expertise has shaped our collaborative mindset, which enables us to solve the most complex challenges. QRT’s culture of innovation continuously drives our ambition to deliver high quality returns for our investors. Your future role within QRT As a Senior Security Engineer, you will play a hands-on role in building, operating, uplifting, and evolving core security platforms and controls across hybrid, multicloud, and on-prem environments. You will act as a subject matter expert for key security solutions, ensuring security controls are observable, scalable, and well integrated across the wider technology ecosystem. You will actively partner with stakeholders, build strong relationships with engineering, infrastructure, and wider business teams, and collaborate across functions to help shape a modern, scalable security function from the ground up. Key Responsibilities * Perform the hands-on implementation, operation, and continuous improvement of core security platforms and key security controls, including responsibility for platform health, effectiveness, and ongoing evolution * Act as subject matter expert for assigned security solutions, championing their roadmap, integration, and operational performance * Support hands-on BAU operation of security products within a global, 24/7 follow-the-sun Security Operations model, including participation in rotational weekend coverage, in depth troubleshooting, and responding to security events that impact system availability, stability, or operational performance, acting as an escalation point for complex issues * Design and implement new security controls and technologies to strengthen the organisation’s cyber resilience * Drive security solution observability and monitoring, ensuring appropriate coverage, alerting, and operational visibility * Implement automated and scalable security solutions, processes, and controls across hybrid, multi cloud, and on prem environments to improve resilience and reduce manual effort * Oversee and support security changes in a controlled and well communicated manner * Build, maintain, and continuously improve operational runbooks, playbooks, and procedures to support reliable day to day operations * Partner with engineering, infrastructure, and wider business stakeholders to embed practical, scalable security controls that support fast moving delivery models * Contribute to the design, implementation, and enforcement of security policies, standards, and best practices * Position security as a business enabler by aligning controls with operational effectiveness and supporting innovation without compromising protection * Mentor and support other engineers through technical guidance, knowledge sharing, and practical leadership * To be considered a good cultural fit, you should have: * Humble, curious and hungry to learn * Flexible and reliable team player who enjoys working in a collaborative environment * Strong communication and interpersonal skills will be needed to collaborate with colleagues across the firm globally Your Present Skillset: * Minimum 10 years’ experience in a security engineering or closely related role * Strong hands-on experience operating and uplifting security technologies including firewalls, EDR, identity solutions, vulnerability management platforms, SASE, CASB, proxies, SIEM and security analytics, cloud security controls, and automation driven security platforms * Strong technical foundations across networking, operating systems, cloud platforms, and security engineering concepts * Solid understanding of major network protocols across multiple layers of the stack * Experience protecting and safeguarding data and assets at both the network and platform layers * Proven hands-on experience operating security controls and security operations capabilities in production environments * Ability to analyse network traffic and troubleshoot complex issues using tools such as tcpdump and Wireshark * Strong understanding of offensive security from an adversary perspective, including how attacks manifest and how controls fail in real world environments * Demonstrated ability to identify and respond to threats in distributed environments, particularly where system availability, stability, or operational performance is impacted * Programming or scripting skills in at least one high level language, with a strong focus on automation and operational efficiency * Strong sense of ownership and accountability, with a track record of driving complex issues through to resolution * Broad understanding of security principles and technologies spanning product and software security, cloud platforms, and business applications * Experience securing both Windows and Linux based systems * Extensive experience with one or more public cloud platforms such as AWS, Microsoft Azure, or Alibaba Cloud, particularly within hybrid environments * In-depth knowledge of threat modelling, risk assessment, and mitigation strategies for largescale, complex systems in fast paced environments * Experience with low latency or performance sensitive financial systems is an advantage QRT is an equal opportunity employer. We welcome diversity as essential to our success. QRT empowers employees to work openly and respectfully to achieve collective success. In addition to professional achievement, we are offering initiatives and programs to enable employees achieve a healthy work-life balance.