Senior Software Engineer - Backend & Infrastructure (f/m/d)

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.

At Intercom, we are at the forefront of AI-driven customer service, dedicated to empowering businesses to deliver exceptional customer experiences.Our flagship AI agent, Fin, represents the pinnacle of customer service AI technology, enabling businesses to provide continuous, flawless service that enhances customer interactions. By integrating Fin with our Helpdesk, we offer a comprehensive solution known as the Intercom Customer Service Suite, designed to tackle complex, high-touch inquiries that necessitate human intervention.Founded in 2011, Intercom has gained the trust of nearly 30,000 businesses globally, continuously setting the benchmark for outstanding customer service. Our core values drive us to push boundaries, innovate rapidly, and consistently deliver remarkable value to our customers.What is the opportunity?We are seeking experienced Senior Product Engineers to join our AI Infrastructure team at Intercom, focused on the development of AI-powered products. As a Product Engineer within AI infrastructure, you will collaborate closely with our Machine Learning (ML) engineers and scientists. You will gain a profound understanding of our product offerings, ML technology stack, and our development processes, with the aim to enhance and expedite these processes further.The broader AI group is tasked with defining new ML features, investigating suitable algorithms and technologies, and quickly deploying initial prototypes to our customers.Our AI infrastructure team is building a platform that enables rapid adaptation to new AI advancements within days, while ensuring a reliable service for our customers. We provide foundational services for AI systems and develop framework-level code utilized daily by other engineers and scientists in the AI division.Our passion lies in leveraging machine learning technology, having successfully productized a spectrum of solutions ranging from traditional supervised models to innovative unsupervised clustering algorithms and advanced transformer neural networks. We rigorously test and measure the tangible customer impact of every model and adjustment we implement.If you are a seasoned backend engineer with an analytical mindset and practical experience in ML systems and platforms, we invite you to connect with us!

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

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.

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.

Join Egis Group as a Senior Civil Engineer, where you will play a pivotal role in designing and managing innovative infrastructure projects. Your expertise will guide the development of sustainable solutions that impact communities positively. You will collaborate with multidisciplinary teams to deliver high-quality engineering results while adhering to industry standards.

At Klaviyo, we celebrate the diversity of backgrounds, experiences, and perspectives each member of our team brings every day. We believe everyone deserves an equal opportunity for success and appreciate the unique experiences beyond conventional job requirements. If you feel like you may not meet every criterion in this description, we encourage you to apply. Curious about life at Klaviyo? Discover how we empower creators to take control of their own destinies at klaviyo.com/careers.Klaviyo drives growth for businesses by enabling them to connect with customers at the right time through the right channels. As the Director of Engineering, Messaging Infrastructure, you will lead the teams responsible for developing and operating our core multi-tenant platform that facilitates message exchange at scale across email, SMS, mobile push notifications, WhatsApp, and future channels. Your organization will oversee the services, pipelines, and integrations that guarantee messages are delivered swiftly, reliably, and in compliance with regulations—empowering our product teams to innovate confidently while ensuring our customers trust us with their most important communications. Success in this role translates to enhanced deliverability, reduced latency, decreased cost-per-message, a robust privacy and compliance framework, and improved developer velocity across Klaviyo.

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

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.

Join Starling Bank, the UK's pioneering digital bank, dedicated to revolutionizing the banking experience! Our goal is to leverage cutting-edge technology, provide fair service, and uphold honest values, all accessible through your mobile device.As a fully licensed UK bank, we embody the innovative spirit of a tech company, offering a fairer, user-friendly approach to banking that simplifies money management for everyone.With over 3,000 employees across our locations in London, Southampton, Cardiff, and Manchester, our talented technologists are at the core of our mission, thriving in a fast-paced environment focused on creativity, innovation, and the latest advancements in fintech. We promote a flat organizational structure, empowering you to make impactful decisions while collaborating with your team for optimal results.At Starling, we value self-drive and ownership, encouraging you to engage in building, designing, discovering, and sharing knowledge to ensure efficiency and productivity in delivering exceptional customer outcomes. Our guiding principles are embodied in our five core values: Listen, Keep It Simple, Do The Right Thing, Own It, and Aim For Greatness.Hybrid WorkingStarling embraces a Hybrid work model, ideally requiring you to be within a commutable distance to one of our offices for in-person collaboration. In the Technology department, we ask for a minimum of one day per week in the office.Our Data EnvironmentThe Data teams at Starling focus on various Banking Services & Products, Customer Identity & Financial Crime, and Data & ML Engineering. We are passionate about providing valuable insights to both our business and our customers. Explore more about our team in our latest blogs or through our case studies with Women in Tech.We invite talented data professionals at all levels to join our dynamic team. We appreciate individuals who are engaged, customer-focused, and take pride in their contributions.

Join MongoDB as a Senior Security Software Engineer focused on enhancing our Infrastructure Security. You will play a crucial role in protecting our systems while working alongside talented individuals in a dynamic environment.

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

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.

Join Primark as a Data Platform & Engineering Lead and drive the evolution of our data architecture and engineering practices. In this pivotal role, you will lead a dynamic team focused on building robust data platforms that support our expansive retail operations. Your expertise will guide the development of innovative data solutions, ensuring data integrity, scalability, and availability.

Join Ramboll as a Senior Project Manager specializing in Civil Infrastructure. In this pivotal role, you will lead complex infrastructure projects, ensuring they are delivered on time and within budget while maintaining the highest quality and safety standards. Your expertise will guide a multidisciplinary team, fostering collaboration and innovation to solve challenging engineering problems.

Join Contentful as a Senior Backend Engineer and play a pivotal role in our AI Platform team. You will be responsible for designing, developing, and maintaining scalable backend services that power our innovative solutions. This is an exciting opportunity to work with cutting-edge technologies in a collaborative environment.

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.

Embark on a Journey of Growth.AECOM is excited to announce an opening for a Senior Civil Design Engineer in our Dublin office.Your Role:In this pivotal role, you will take the lead on the Civil Assurance function within the Infrastructure Department, delivering expert technical guidance, compliance oversight, and thorough due diligence for all civil engineering assets. Your expertise will be especially focused on airfield civil infrastructure, ensuring that projects are not only compliant with standards but also functional, efficient, and safe.You will spearhead the development and implementation of a Technical Assurance Framework for civil infrastructure, coordinating closely with technical teams to assess designs from Framework Design Consultants and Contractors, verifying technical compliance, and ensuring constructability.As a Senior Civil Design Engineer, you will play a crucial role in ensuring that all infrastructure projects adhere to the necessary technical design standards, legislative requirements, and Employer Requirements (ER) throughout the design and delivery phases.Key Responsibilities:Deliver designs and contract documentation in accordance with programme timelines, quality standards, and financial objectives set by the Contracting Entity, while ensuring adherence to best practice governance and control procedures.Conduct technical assurance and due diligence reviews at critical governance stage gates.Evaluate civil engineering requirements across programme projects to confirm feasibility and alignment with the Contracting Entity’s objectives.Ensure that Employer Requirements (ER) accurately reflect client needs and performance specifications.Collaborate with programme teams to guarantee contractor compliance with approved civil designs during construction phases.Technical Guidance:Oversee civil engineering contributions across programmes, ensuring designs comply with relevant codes of practice, ICAO/EASA standards, and international best practices.Assess project lifecycle costs alongside Commercial and Contract Management teams.Engage in value engineering and cost optimization initiatives.Establish and maintain robust quality management systems for civil engineering design processes.Conduct audits of technical processes and procedures to ensure compliance and quality.