Principal Engineer

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.

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.

At Manna, we’re revolutionizing delivery services by taking them to the skies. Our ambitious mission is to make high-speed delivery in suburban areas not only affordable but also environmentally friendly and safe. We design and manufacture our own aviation-grade drones, delivering food, groceries, coffee, and more directly from local vendors to customers’ doors within minutes.Our team embodies principles of Impact, Safety, and Authenticity. We believe that the best ideas come from collaborative team players who are passionate about their work. We move quickly, embrace a growth mindset, and are committed to continuous improvement in everything we do.If you’re eager to create technology that has a meaningful impact on the world—and enjoy a fun work environment while doing it—you’ll fit right in at Manna.Welcome to Manna — where we deliver the future.Role PurposeWe are seeking a Lead Data Engineer to evolve our data infrastructure. This role combines hands-on data engineering with the responsibility of managing our core data platform, utilizing Postgres and Snowflake. You will build scalable data pipelines, manage database performance, and enable analytics and AI applications across the organization. Collaborating with engineering, analytics, and leadership, you will help shape data architecture, enhance data quality, and meet our growing data needs.Key ResponsibilitiesOversee and manage production, development, and reporting Postgres databases.Develop and improve the data platform architecture across Postgres and Snowflake.Design, implement, and maintain scalable data pipelines from raw files and source systems.Optimize data models for analytics and reporting purposes.Ensure Snowflake performance and cost efficiency.Monitor and enhance Postgres performance (including query tuning, indexing, and scaling).Guarantee data platform security, access control, and governance.Establish and uphold data engineering standards, best practices, and documentation.Introduce monitoring, alerting, and observability across data systems.Collaborate with teams to understand and deliver on their data requirements.Support AI and advanced data use cases by managing high-quality datasets.Act as a key technical authority for data platform decisions and direction.

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.

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.

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.

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.

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

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.

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 Primark is hiring a Data Science & Measurement Lead in Dublin. This position guides data-driven projects that shape how the company measures performance and makes decisions. The role works closely with teams across the business to find new ways to support growth and strengthen customer experiences.

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.

Winthrop Technologies stands as Europe’s premier dedicated data centre delivery partner, specializing in comprehensive turnkey solutions that span from design to construction and commissioning. With our headquarters in Dublin, we execute projects throughout Europe, establishing ourselves as the most trusted name in the industry.We invite applications from seasoned professionals for the role of Lead Commissioning Engineer to spearhead a large-scale data centre project in Dublin. This is a critical senior leadership role focused on the planning, coordination, execution, and seamless handover of all mechanical and electrical commissioning activities, including vital systems.Key Responsibilities:Commissioning Leadership & StrategyDirect and manage the comprehensive MEP commissioning strategy, covering everything from initial design review to IST, client acceptance, and final project handover.Develop and oversee the integrated commissioning program, ensuring alignment of mechanical and electrical milestones with overall project timelines.Provide strategic oversight of commissioning risks, interfaces, and dependencies, proactively addressing any potential impacts on the program or technical aspects.Mechanical & Electrical Commissioning OversightLead, coordinate, and supervise all mechanical and electrical commissioning activities, including vendor-led works for CFCI and OFCI packages.Manage the commissioning of critical systems such as:LV/MV/HV electrical systems, switchgear, UPS, generators, and protection systems.Mechanical systems encompassing HVAC, chilled water, pumps, controls, fire protection, fuel oil, and process water systems.Ensure all commissioning activities adhere to approved procedures, design specifications, and contractual obligations.Vendor & Stakeholder ManagementAct as the primary commissioning liaison with vendors, subcontractors, and client representatives.Plan, manage, and participate in FATs, SATs, FWTs, and IST activities as required.Lead daily, weekly, and milestone commissioning meetings, ensuring effective communication, accountability, and resolution of action items.Quality, Safety & ComplianceEnsure all commissioning operations are conducted in strict accordance with EHS, QA/QC, and AP standards.Work closely with Project QA/QC and AP teams to achieve mutual safety, quality, and handover objectives.Implement safe working systems throughout all commissioning and energization activities.Documentation, Reporting & HandoverOversee the preparation, review, approval, and closure of all mechanical and electrical commissioning documentation, including:Test Scripts and Method Statements.Compliance Statements and commissioning records.

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.

Join usm2 as a Lead Data Analyst, where your expertise will drive data-driven decisions and strategic initiatives. Collaborate with cross-functional teams to analyze complex datasets and deliver actionable insights that enhance our operations and customer experience.