Senior Security Software Engineer - Infrastructure Security

zerorisk is hiring an API Test Infrastructure Engineer in Dublin. This role combines elements of software engineering, quality assurance, and DevOps. The main responsibility: develop and support the infrastructure that enables teams to test APIs efficiently and at scale. Role overview The position centers on building platforms, tools, and workflows that help engineers create and execute reliable API tests. It also covers managing integrations with external tools and maintaining their reliability through automated API-level validation. What you will do Test infrastructure and platform Design and build automated API testing infrastructure for local, CI, and production-mirror environments. Maintain a shared library of reusable testing utilities, fixtures, helpers, and patterns for engineering teams. Lead efforts to containerize test environments using Docker and related tools to ensure consistent, reliable test runs. Integrate test infrastructure with CI/CD pipelines, including test reporting, alerting, and failure analysis workflows. Evaluate and introduce new tools, frameworks, or methodologies to improve the reliability, speed, and coverage of testing. External tool integrations and continuous validation Develop and maintain automated integration tests for third-party and external API-based tools used by zerorisk. Create monitoring and alerting systems to detect regressions or unexpected changes in external API behavior. Collaborate with internal teams to understand integration needs and translate them into automated, continuous testing scenarios.

Intercom, the leading AI Customer Service company, is dedicated to empowering businesses to deliver exceptional customer experiences.Our state-of-the-art AI agent, Fin, is recognized as the most advanced customer service AI agent available, enabling businesses to provide seamless, 24/7 customer service, thereby revolutionizing customer experiences. Fin's capabilities can also be integrated with our Helpdesk, creating a comprehensive solution known as the Intercom Customer Service Suite, which enhances support for complex queries that necessitate human intervention.Since our founding in 2011, we have garnered the trust of nearly 30,000 businesses worldwide, setting a new benchmark in customer service. Our commitment to our core values drives us to innovate, work with urgency and precision, and consistently deliver outstanding value to our clients.What’s the opportunity?As a Senior Product Engineer at Intercom, you will play a pivotal role in addressing real customer challenges through a strategic and efficient application of your technical expertise. You will collaborate within a multidisciplinary product team, developing both back-end and front-end systems while working closely with designers, product managers, researchers, and data analysts.We are navigating thrilling scaling challenges and are focused on enhancing a robust platform where your skills can be utilized in areas such as building an intuitive messenger composer, rule matching, ensuring deliverability, fortifying security, enhancing app availability, and leveraging machine learning, among others.We are seeking a Senior Engineer to join our team, which is responsible for creating and maintaining a diverse array of APIs and core services that facilitate customer data management and integrations. We empower our clients and developers to optimize their data to fully utilize our AI Agent, including Intercom’s MCP functionalities.Our team also oversees strategic integrations with prominent applications such as Salesforce, Stripe, and Shopify, ensuring fluid data synchronization with external systems.What will I be doing?Participate in all stages of software development including ideation, prototyping, design, and implementation.Work alongside Product, Design, and Partnerships teams to ensure our data services fulfill business requirements and provide an exceptional developer experience.Design, develop, and maintain Intercom’s APIs, ensuring they are rich in features, performant, robust, and well-documented.Enhance our strategic integrations with applications like Salesforce, Stripe, and Shopify.Implement systems to monitor the infrastructure we build, identifying and addressing bottlenecks and issues with queues, workers, and data quality.

Role overview The Development Infrastructure Engineer position at AECOM in Dublin centers on supporting a variety of infrastructure projects. The focus is on delivering solutions that are both efficient and sustainable. Collaboration with colleagues from multiple disciplines is a key part of the role, ensuring that infrastructure systems meet current industry standards. What you will do Work alongside cross-functional teams to design, implement, and maintain infrastructure systems. Support ongoing efforts to enhance efficiency and sustainability in development practices. Contribute to projects where high standards in infrastructure delivery are expected.

Why Join Verifone?For over four decades, Verifone has been at the forefront of the electronic payment technology sector. As a leading brand, we are recognized globally as one of the largest providers of electronic payment solutions.At Verifone, we foster a vibrant, dynamic, and fast-paced work environment where our team members are results-oriented and have ample opportunities for growth. We collaborate with top retailers, banks, and partners worldwide to innovate and deliver cutting-edge payment solutions. Our commitment to excellence in both products and services is matched only by our obsession with ensuring customer satisfaction. Our employees are recognized leaders in the payments industry, driven by experience, innovation, and a relentless spirit. Whether we’re developing the next generation of secure payment systems or exploring new markets for electronic payments, our team is dedicated to the success of our customers, partners, and investors. This passion for innovation fuels the personal and professional success of each employee.Verifone proudly embraces an in-office culture, believing in the significant advantages of career development and business outcomes that arise from in-person collaboration. Currently, we offer a hybrid work schedule, but we regularly assess our attendance policy.

Role Overview Toast, Inc. is hiring a Principal Infrastructure Engineer in Dublin, Ireland. This role focuses on designing and implementing infrastructure solutions that support scale, security, and reliability across the company’s systems. What You Will Do Design infrastructure to meet business and technical needs Implement solutions that support scalability and reliability Work closely with teams from different disciplines to deliver secure systems

Are you an experienced Software Engineer in Test, Test Engineer, or Test Analyst with a passion for both manual and automated testing? Join our dynamic agile team at Version 1, where you'll play a pivotal role in helping our clients achieve their business transformation goals through comprehensive testing strategies.Your responsibilities will include collaborating with cross-functional teams to uphold quality standards, validating and analyzing large data sets using SQL, and developing insightful reports and dashboards with tools like SSRS and Power BI. Additionally, you will support our test management processes using QMetry and contribute to our automation testing initiatives, particularly focusing on API testing with Karate.Be part of a culture of knowledge-sharing and collaboration across diverse regions and functions.

Role overview The Infrastructure Project Engineer at AECOM will manage and deliver a range of infrastructure projects in Dublin. This position covers the entire project process, from early planning stages through to final completion. Key responsibilities Lead infrastructure projects through all phases, from concept to delivery. Coordinate with colleagues in various disciplines to align project activities. Track project progress, ensuring timelines and budgets are met. Uphold safety and quality standards throughout each stage of the project. Location This position is based in Dublin.

Intercom builds AI-powered customer service tools that help businesses deliver reliable, round-the-clock support. Our AI agent, Fin, and the Intercom Customer Service Suite combine automation with human expertise to handle millions of customer inquiries every month. Since 2011, nearly 30,000 businesses worldwide have chosen Intercom to raise their customer service standards. Role overview The Senior AI Infrastructure Engineer role focuses on developing and scaling the systems that train and deploy Intercom’s next generation of AI products. The AI Infrastructure team works across the stack, from GPU-level engineering up to the user-facing agents that power customer support. This team has built training pipelines and inference systems for models like Fin Apex, which are tailored for customer service and serve as the foundation for Intercom’s AI capabilities. What you will do Design and scale training pipelines for large transformer and LLM models, including data ingestion, preprocessing, distributed training, and evaluation. Build and improve inference services to ensure fast, reliable experiences for clients, covering auto-scaling, routing, and failover. Optimize GPU-level performance by tuning kernels, improving resource utilization, and identifying bottlenecks in training and inference workflows. Work closely with ML scientists to implement new training and inference techniques. What we’re looking for Strong experience with model training or large-scale model inference, and hands-on knowledge of low-level GPU programming (such as CUDA or Triton). Experience in more than one of these areas is especially valuable. Location This position is based in Dublin, Ireland.

AECOM is seeking a Senior Engineer to join the Development Infrastructure team in Dublin. This position plays a key role in delivering infrastructure projects that support community growth and urban development. Role overview This role involves leading a team of engineers and working closely with stakeholders to ensure successful project outcomes. The Senior Engineer will take responsibility for guiding projects from planning through completion, focusing on both technical quality and effective collaboration. What you will do Lead and mentor a team of engineers working on development infrastructure projects Coordinate with stakeholders at every stage of the project lifecycle Oversee project execution to ensure technical requirements and quality standards are met Apply technical expertise to address project challenges and deliver effective solutions

Seapoint is developing a financial hub designed for European startups and scale-ups. The platform brings together payroll, expenses, invoicing, and reporting within a single business account, using AI to simplify financial operations for founders. Founded by Sean Mullaney, former European CIO at Stripe, Seapoint’s team includes alumni from Stripe, Wise, Wayflyer, Nubank, and Tide. The company has raised $10 million from Frontline Ventures and is currently in private beta, collaborating with VC-backed startups to improve financial insight and automation. Many European startups face the challenge of managing multiple financial tools, often losing out on interest and spending excessive time on manual tasks. Seapoint’s platform aims to automate these processes, allowing founders to focus on growing their businesses. Role overview The Senior Infrastructure Engineer leads the design, development, and scaling of the systems behind Seapoint’s financial platform. This role focuses on building and maintaining infrastructure that supports a multi-tenant financial product. Key areas include CI/CD, observability, database reliability, and cloud architecture. Decisions in this position directly influence how Seapoint deploys, monitors, and scales its platform for real-world financial operations. What you will do Cloud infrastructure: Design and manage AWS environments, covering compute, networking, security, and cost optimization. The stack uses TypeScript/Bun and PostgreSQL. Maintain secure, reliable, and cost-effective infrastructure as Seapoint grows. Developer experience: Build tools and CI/CD pipelines to help a small engineering team ship confidently. Emphasize fast builds, reliable previews, and zero-downtime deployments. Observability and reliability: Maintain monitoring, alerting, and incident response systems. Create dashboards, traces, and alerts to identify issues like payment failures or integration problems before they affect customers. Database and data infrastructure: Optimize PostgreSQL for multi-tenant financial workloads. Focus on connection pooling, query performance, backup strategies, and safe migrations to ensure data integrity. Security and compliance: Build infrastructure to support financial compliance, including secrets management, access controls, audit logging, and network security. Ensure the platform meets high security standards for financial services. Requirements 7+ years of professional experience in infrastructure, DevOps, or platform engineering Location: Dublin, County Dublin, Ireland

Join our dynamic team as a Senior Engineer specializing in Infrastructure Platforms. You will play a crucial role in shaping our infrastructure, enhancing our scalability and performance. Collaborate with cross-functional teams to design and implement robust systems that support our growing user base.As a Senior Engineer, you will be expected to leverage your extensive experience in software engineering, systems architecture, and cloud technologies to drive innovation within our infrastructure.

AECOM seeks a Principal Engineer focused on Development Infrastructure based in Dublin. This role leads teams through all stages of urban infrastructure projects, ensuring each phase moves smoothly from initial planning to final delivery. Role overview The Principal Engineer takes responsibility for guiding teams and managing projects that support urban development. Collaboration with professionals across various disciplines is central to delivering effective solutions. What you will do Lead infrastructure development projects from early planning to completion Ensure all project work aligns with industry standards and meets regulatory requirements Coordinate with experts from different backgrounds to achieve project goals

Join Crusoe Technologies as an Infrastructure Engineer, where you will be pivotal in designing, implementing, and maintaining robust infrastructure systems that support our innovative solutions. You will collaborate with cross-functional teams to ensure high availability and performance of our services.

Join Our Team as a Network Engineer!At Arista Networks, we are on the lookout for exceptional Network Engineers to join our testing team, ensuring our networking products uphold the highest standards of quality. In this role, you will collaborate closely with our developers, actively participating in the identification and resolution of bugs before our customers encounter them.We value your intelligence, creativity, and proactive mindset. Your role is critical in understanding how our customers will utilize our products, ensuring they function flawlessly every time. Rather than executing lengthy manual regression tests, you will focus on uncovering complex bugs that automated tests may overlook.Your Responsibilities Include:Utilizing a variety of methods to identify bugs in the software and hardware developed by your team.Creating comprehensive test plans to validate Arista’s features and products.Designing test network topologies to assess functionality, performance, stability, and scalability.Executing test plans to verify all product aspects, identifying defects, and validating their resolution.Actively participating as an agile team member, working collaboratively with developers in short iterations to develop functional software.Cooperating with developers to create automated test plans that enhance exploratory testing efforts, positioning yourself as the testing expert in the team.Engaging in functional specification and software design reviews, providing valuable customer-centric insights.

Position: Test Lead - Manufacturing (MES)Location: Dublin, IrelandContract Duration: Initial rolling contract of 3 monthsJob Overview:As the Test Lead for our Manufacturing division, you will be at the forefront of our testing initiatives within the Manufacturing Execution Systems (MES). This pivotal role involves leading the manufacturing test tower and ensuring that all test scripts are comprehensive and aligned with requirements and risk assessments associated with manufacturing applications.

About Us: At Articul8 AI, we are on a mission to redefine the standards of excellence in AI product development. Our dedicated team is committed to crafting outstanding solutions that not only meet but exceed the expectations of our clients. We leverage our unique capabilities to create a positive impact in the world, inspiring others to join us in this journey.Job Description: We are excited to welcome a talented Infrastructure Engineer to our innovative Product Technology team. This individual will play a vital role in shaping the infrastructure for our Generative Artificial Intelligence (GenAI) products. You will be responsible for designing and building scalable, robust, and cost-effective cloud-based solutions. Collaborating with cross-functional teams, you will drive innovation, optimize performance, and ensure seamless integration across our GenAI-driven offerings.

Join Arista Networks as a Network Operations Engineer - Testing Specialist, where you will play a crucial role in ensuring the reliability and performance of our innovative networking solutions. You will be responsible for executing various tests, troubleshooting, and providing support to maintain the highest quality of our products.

Speechify builds text-to-speech tools that help over 50 million people convert written content, PDFs, books, Google Docs, news, and websites, into audio. Our products span iOS, Android, Mac, Chrome, and web. Recent recognition includes Chrome Extension of the Year from Google and Apple’s 2025 Design Award for Inclusivity. The company operates fully remote, with nearly 200 team members worldwide. The team includes frontend and backend engineers, AI researchers, and alumni from Stanford, Amazon, Microsoft, Google, Stripe, Vercel, and Bolt. Role overview This Software Engineer position sits within the AI team and focuses on data infrastructure and acquisition. The work centers on optimizing data collection and building large-scale, high-quality datasets to support model training. The team combines infrastructure, engineering, and research to deliver petabyte-scale data pipelines. What you will do Identify and integrate new audio data sources into the ingestion pipeline Manage and extend cloud infrastructure on Google Cloud Platform (GCP) using Terraform Collaborate with scientists to improve data quality, throughput, and cost-effectiveness for next-generation models Work with the AI team and company leadership to shape the strategic roadmap for datasets powering Speechify’s consumer and enterprise products Location This role is based in Dublin, Ireland. The team works fully remotely.

Role overview Arista Networks is seeking a Senior Network Engineer - Solution Testing based in Dublin. The position centers on designing, implementing, and validating advanced network technologies. Collaboration with cross-functional teams is key to maintaining high standards for network performance and reliability. What you will do Develop and execute test plans for new and existing network solutions Partner with software engineers to ensure seamless integration of network technologies Analyze test results and provide actionable feedback to improve solutions Troubleshoot and resolve network issues as needed Who thrives here This role fits engineers who are deeply interested in network performance and skilled in testing methodologies. Success comes from a collaborative spirit and a hands-on approach to solving technical challenges.