Principal Engineer

Join Primark as a Principal Engineer, where your expertise will drive technological innovation and excellence in our systems. You will play a pivotal role in leading engineering initiatives, mentoring junior engineers, and collaborating with cross-functional teams to deliver outstanding solutions that enhance customer experience.Your contributions will not only shape our technology landscape but also set the foundation for future projects. If you're passionate about engineering and eager to make a significant impact, we want to hear from you!

At Intercom, we pride ourselves on being a pioneering AI Customer Service company dedicated to revolutionizing customer experiences for businesses worldwide.Our flagship AI agent, Fin, stands out as the most advanced customer service AI agent available, empowering businesses to deliver exceptional customer service around the clock. Fin can seamlessly integrate with our Helpdesk to form the Intercom Customer Service Suite, a comprehensive solution designed to handle both complex inquiries that necessitate human intervention and straightforward requests.Since our inception in 2011, Intercom has gained the trust of nearly 30,000 businesses globally, setting a new benchmark in customer service. Guided by our core values, we continuously strive to innovate, work with urgency, and deliver unparalleled value to our clients.What’s the opportunity?As a Principal Engineer at Intercom, you will have the unique opportunity to lead the formulation and implementation of vital strategic initiatives. You will operate independently while being accountable for successful execution within a segment of our engineering organization. Your responsibilities will encompass developing both back-end and front-end systems, collaborating closely with designers, product managers, researchers, and data analysts. Additionally, you will mentor and guide fellow engineers while partnering with Group Engineering Managers on technical strategy and leadership.What will I be doing?In this role, you will:Exhibit mastery in your domain knowledge, acting as a leader in the R&D organization to propel essential strategic projects forward.Provide evaluations of project status, risks, and challenges to engineering leadership to inform resource allocation and prioritization.Contribute to our technical architecture as we expand, ensuring scalability to handle requests from all our customers’ customers.Value agility as much as scalability and availability, with a focus on continuous deployment for incremental releases.Engage in all stages of software development, including ideation, prototyping, design, and implementation, blending hands-on development with leadership and architectural tasks.Utilize the industry’s best tools, as we heavily invest in AI-powered developer tools that eliminate friction and enhance your problem-solving capabilities.

About the Role AECOM is hiring a Principal Structural Engineer in Dublin. This position leads challenging structural engineering projects and works closely with colleagues from various disciplines. The role involves guiding project delivery and contributing technical insight throughout the process. Main Responsibilities Lead complex structural engineering projects from concept through completion Mentor and support junior engineers on technical matters and career growth Work with multidisciplinary teams to deliver high-quality solutions

CarGurus, Inc. helps people navigate every stage of their automotive experience, from shopping to financing and delivery. Founded by a small group of developers, the company has grown over 15 years into a major automotive marketplace, serving millions of consumers and thousands of dealerships each month. The team values kindness, collaboration, and creativity, and supports ongoing career development. The International team is hiring a Principal Software Development Engineer for the Dublin office. This position leads product efforts for the Canadian and UK markets, and plays a key part in shaping the local office culture. The role covers the full software development lifecycle, with work spanning both frontend and backend systems. Collaboration with Engineering and Product teams in Dublin and the US is central to the job, especially when tackling complex dealer-focused products. What you will do Lead the design and development of new full-stack features for dealer products. Integrate and enhance existing services using React, TypeScript, and Java. Design and implement integrations with third-party APIs and partners, working with applications built on Remix. Modernize and re-architect systems to use AWS and other cloud technologies. Own projects from start to finish, working closely with engineers and product partners in both Dublin and the US. Requirements Quick to learn and adapt to new challenges. Experience collaborating with other engineers to deliver meaningful solutions. Strong technical expertise combined with business insight to help guide teams in strategic decisions.

Role overview AECOM is seeking a Principal Electrical Engineer specializing in substations for its Dublin office. This position centers on leading the design and delivery of substation projects, with a focus on quality, safety, and compliance with industry standards. What you will do Lead the design of substation projects from initial concept through to implementation. Oversee project execution, ensuring all work aligns with industry standards and safety regulations. Provide guidance and support to the engineering team at each stage of the project lifecycle. Ensure all solutions meet client requirements and uphold high quality standards. Requirements Professional background in electrical engineering with a focus on substations. Demonstrated leadership and project management skills. Strong commitment to safety and regulatory compliance. Ability to deliver dependable, client-oriented solutions.

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

Why Choose PlayStation?At PlayStation, we pride ourselves on being not only the premier destination for gaming but also a remarkable workplace. As a global frontrunner in the entertainment industry, we develop an iconic range of products and services, including PlayStation®5, PlayStation®4, PlayStation®VR, PlayStation®Plus, and award-winning titles from PlayStation Studios.We are committed to fostering an inclusive atmosphere that empowers our employees and celebrates diversity. We invite individuals who are passionate about innovation, technology, and gaming to explore our career opportunities and become part of our expanding global family.PlayStation operates as a division of Sony Interactive Entertainment, a wholly-owned subsidiary of Sony Group Corporation.The Lead Principal Software Engineer will collaborate across various teams including Product Management, Architecture, Engineering, Hosting, and Operations. This role demands extensive technical knowledge, creativity, industry insight, and strong communication skills. You will leverage your technological expertise to drive future innovations on our platforms.In this capacity, you will play a critical role in architecting large-scale commerce systems on the Sony PlayStation Network Platform. Your contributions will adhere to industry best practices, facilitating highly available, active-active, and scalable services.You will engage in product roadmap discussions, pinpointing essential areas for enhancement and integrating these objectives into both current and future development strategies.

Role Overview Intercom is hiring a Lead Principal Engineer for the Go-To-Market team in Dublin, Ireland. This role shapes product strategies and develops new solutions to improve customer engagement. The position calls for leadership of an engineering team and close collaboration with colleagues from other disciplines. What You Will Do Guide and mentor a skilled team of engineers Work with cross-functional partners to align on product direction Apply technical expertise to deliver solutions that create value for clients Influence the evolution of Intercom’s customer engagement products Location This position is based in Dublin, Ireland.

Join Toast, a leading restaurant technology platform, as a Senior Principal Software Engineer in the Team Agent division. In this pivotal role, you will spearhead the development of innovative software solutions that empower restaurant operators to thrive in an increasingly digital world. Your expertise in software engineering will guide the team in building robust, scalable applications that enhance operational efficiency and improve customer experiences.

Position ID: POS-32048 About HubSpot’s Approach to Applications HubSpot knows that concerns like confidence gap and impostor syndrome sometimes keep talented people from applying. If this role interests you, consider submitting an application. Accessibility and Accommodations If a disability makes it difficult to apply or participate in the process, please let us know using this form. HubSpot is committed to supporting candidates who need alternative arrangements. Work Location and Onboarding Flexibility and connection matter at HubSpot. Team members can work remotely or from the Dublin office, but new Engineering hires attend in-person onboarding at a regional HubSpot office. Product team members also join in-person events to build relationships. If travel or other factors require adjustments, please discuss this with your recruiter during the hiring process. Legal Notice for Massachusetts Applicants Massachusetts law prohibits employers from requiring or administering lie detector tests as a condition of employment or continued employment. Violations may result in criminal and civil penalties.

Role overview Toast, Inc. seeks a Principal Software Engineer in Dublin to help define the architecture and future of its restaurant management platform. The position centers on designing and building dependable software, with a strong emphasis on collaboration across teams to deliver features that support restaurant operations. What you will do Shape architectural decisions and set the technical direction for major projects Work with engineers, product managers, and stakeholders to deliver reliable, high-quality software Share knowledge to help teams adopt best practices and enhance system performance Support a culture that encourages quality, learning, and ongoing improvement Location This role is based in Dublin, Ireland.

Role overview AECOM seeks a Principal Engineer in Dublin with a focus on high-voltage (HV) substation design for data centres. This role centers on creating and delivering HV systems that form the backbone of modern data centre infrastructure. What you will do Design and implement HV substations for data centre projects Collaborate with engineers and project managers to ensure solutions meet client requirements and industry standards Mentor junior engineers and contribute to their technical development Monitor project schedules and help keep milestones on track Maintain compliance with safety regulations throughout each phase of the project Requirements Extensive experience in HV substation design, ideally within data centre settings Ability to lead teams and support the growth of less experienced engineers Strong focus on safety and quality in engineering work Proven collaboration skills with multidisciplinary teams This position offers a chance to contribute to the development of critical data centre infrastructure as part of AECOM's Dublin team.

Intercom is a leading AI Customer Service company dedicated to empowering businesses to deliver exceptional customer experiences.Our AI agent, Fin, stands out as the most sophisticated customer service AI available, enabling businesses to offer round-the-clock, flawless customer service and significantly enhance their customer interaction quality. Fin can be integrated with our Helpdesk to form the Intercom Customer Service Suite, delivering AI-powered assistance for more intricate or personalized inquiries needing human intervention.Founded in 2011 and trusted by nearly 30,000 businesses across the globe, Intercom is redefining customer service standards. Guided by our core values, we continually push boundaries, build with urgency and precision, and consistently provide outstanding value to our customers.What’s the opportunity?Intercom’s websites, including intercom.com and fin.ai, serve as vital growth drivers for the company — facilitating storytelling, branding, experimentation, and product discovery. As our Lead Principal Engineer, you will be instrumental in shaping the technical direction and architectural advancement of our web platform and systems.You will serve as the technical lead across our marketing and growth web surfaces. This role involves cross-functional engineering leadership, collaborating with marketing, analytics, design, data science, and engineering teams to ensure our web stack is contemporary, efficient, measurable, and enjoyable to work on.Your role will entail a high degree of autonomy where you will be responsible for establishing the long-term technical strategy for the team and executing it effectively.What will I be doing?As a senior technical leader, you will:Oversee and advance the architecture of Intercom’s web stack.Define the long-term technical strategy for the web team, prioritizing scalability, performance, developer productivity, observability, and system reliability.Work closely with marketing, design, analytics, and data science teams to ensure the platform accurately supports their objectives with efficiency and agility.Lead and steer the design and implementation of MarTech systems for event tracking, attribution, funnel reporting, A/B testing infrastructure, and more.Collaborate with engineers across web, infrastructure, and data to develop a high-quality, unified technical ecosystem.Mentor and elevate engineers across the team and organization — providing insights on architecture, data modeling, and best practices.

Role overview Intercom seeks a Staff or Principal Product Designer based in Dublin, Ireland. This senior-level position focuses on shaping product experiences and guiding the direction of the platform. The core challenge involves translating complex problems into practical, approachable solutions that address real user needs. What you will do Create user-centered designs that enhance how people interact with Intercom products Collaborate with engineering, product, and cross-functional teams to bring ideas from early concepts to finished features Contribute to product strategy by sharing design expertise and a clear point of view Impact This role directly affects the quality of the user experience and helps shape the evolution of Intercom’s products. Design work in this position supports the company’s mission to make business interactions more personal for both customers and companies.

We are seeking an experienced Principal Consultant in Data & Analytics to join our dynamic team at Turner Townsend. In this pivotal role, you will leverage your expertise to drive innovative data solutions and analytical strategies within the energy and natural resources sector. This position offers an exciting opportunity to work on transformative projects that make a significant impact.

Join Turner Townsend as a Principal SHQ Consultant, where you will leverage your expertise in the real estate sector to drive strategic safety, health, and quality initiatives. This pivotal role involves collaborating with cross-functional teams to enhance project delivery while ensuring compliance with industry standards.

Innovative Technology that Transforms TravelAt CarTrawler, we are a pioneering global travel technology company dedicated to facilitating seamless connections between individuals, destinations, and opportunities. From enhancing car rental services to devising smarter mobility solutions, we strive to make travel smoother for millions around the globe. Our vibrant culture fosters curiosity, collaboration, and enjoyment, where every idea is valued and every journey is significant. Are you ready to create a meaningful impact? Let’s embark on this journey together.Our Product & Technology team at CarTrawler champions innovation at every turn. By uniting engineers, product managers, designers, and analysts, we leverage creativity, data, and AI advancements to tackle challenges that simplify travel for all. Whether it's crafting intuitive digital experiences or enabling intelligent automation behind the scenes, we are shaping a future where technology and humanity coexist harmoniously.Your Journey Begins Here!As a Principal Data Engineer, you will spearhead the development of our data platform, merging extensive technical knowledge with leadership skills to enhance how data drives business decisions. You will architect and implement scalable, high-performing data solutions while mentoring your team toward engineering excellence. Operating at the crossroads of data, AI, and product innovation, you will influence system architecture, expedite project delivery, and uphold high standards. This role is hands-on in nature, allowing your contributions to resonate within both the codebase and the team’s capabilities. If you are enthusiastic about constructing robust systems and guiding others in their development, this is your chance to leave a lasting impact.

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

Principal/Senior Railway Permanent Way EngineersJoin Roughan & O’Donovan (ROD) as we seek dynamic and skilled Principal/Senior Railway Permanent Way Engineers to become vital members of our growing railways team.Job Type: PermanentLocation: Dublin, Cork, or Leeds Salary: CompetitiveBackgroundAs a valued member of our railways team, you will contribute to a diverse array of projects, encompassing light rail, heavy rail, and railway asset management. Our esteemed clients include Iarnród Éireann, Transport Infrastructure Ireland, local authorities, and top contractors involved in implementing railway initiatives.Recent and ongoing projects feature:George’s Dock BridgeWaterford City Public Infrastructure ProjectDART+ WestCork Area Commuter Rail (CACR) ProgrammeEssential RequirementsA recognized honours degree in railway or civil/structural engineering (Minimum Level 9 qualification in the National Framework of Qualifications or equivalent).Principal Railway Permanent Way Engineers must possess a minimum of 10 years’ post-qualification experience in design and implementation.Senior Railway Permanent Way Engineers should have 5 to 10 years’ post-qualification experience in design and implementation.Expertise in track alignment design and proficiency in associated software and technologies are essential.In-depth knowledge of vignole and trough rail technology is required.Comprehensive understanding of permanent way design for both street and ballasted track, including elements like earthworks and drainage.Familiarity with Irish and UK design standards related to railway design is crucial.Demonstrated strong design capabilities.Meticulous attention to detail with a focus on delivering high-quality design outputs.Outstanding analytical skills.Experience in track inspection and assessment is preferred.Excellent numerical and analytical abilities.Proven project management skills and experience are necessary.Ability to thrive in a fast-paced environment with strict deadlines.Flexible, motivated, and directed towards achieving goals.Chartered Engineer status or actively working towards chartered status with a recognized professional body.Fluency in both written and spoken English is essential.

Supermetrics is seeking a Principal Digital Experience Engineer to guide the technical vision for its B2B SaaS marketing website. This senior individual contributor position (IC5) is available in Amsterdam, Dublin, Helsinki HQ, or the United Kingdom. The company’s website serves as a key touchpoint for marketing, sales, and brand perception, making this a pivotal role for business growth. Role overview The Principal Digital Experience Engineer sets technical direction, defines engineering standards, and ensures the website supports measurable business outcomes. While hands-on coding may occasionally be needed, the focus centers on strategic oversight, technical governance, and influencing both internal teams and external partners. Shaping the site’s architecture and development approach, this role impacts every campaign and user journey. Key technology stack Astro.js TypeScript Sanity (headless CMS) Integrations: HubSpot, Google Tag Manager, Google Analytics, Zendesk Main responsibilities Set the technical strategy for the marketing website, making decisions on platform, stack, infrastructure, and architecture at an organizational level. Oversee website development and redesigns from concept to launch. Define technical requirements, establish engineering benchmarks, supervise delivery, and ensure alignment with performance, accessibility, and brand standards. Build a foundation for conversion optimization and experimentation. Architect the site to support A/B testing, personalization, and rapid iteration, enabling the growth team to move quickly (without directly running tests). Monitor site performance, Core Web Vitals, uptime, and technical SEO health. Document and implement performance approaches that become company standards. Define the website data layer. Set up event architecture and tracking protocols that support the broader BI strategy, collaborating with Data Architects and Analysts. Design content infrastructure in Sanity. Create content models, reusable components, and ingestion pipelines to enable a "Create Once, Publish Everywhere" approach. Develop an AI strategy for the website. Evaluate and recommend AI-driven personalization, dynamic content, conversational interfaces, and intelligent search to improve user experience. What success looks like The website reliably meets performance, accessibility, and branding goals. Engineering standards and technical documentation are clear and adopted across teams. Growth and content teams can experiment and publish efficiently. Data-driven insights and AI capabilities enhance the digital experience and support business objectives. This strategic, high-impact role is suited for a recognized expert ready to shape the future of Supermetrics’ digital presence.