Principal Software Development Engineer

Cargurus

Who we are At CarGurus (NASDAQ: CARG), our mission is to give people the power to reach their destination. We started as a small team of developers determined to bring trust and transparency to car shopping. Since then, our history of innovation and go-to-market acceleration has driven industry-leading growth. In fact, we’re the largest and fastest-growing automotive marketplace, and we’ve been profitable for over 15 years. What we do The market is evolving, and we are too, moving the entire automotive journey online and guiding our customers through every step. That includes everything from the sale of an old car to the financing, purchase, and delivery of a new one. Today, tens of millions of consumers visit CarGurus.com each month, and ~30,000 dealerships use our products. But they're not the only ones who love CarGurus—our employees do, too. We have a people-first culture that fosters kindness, collaboration, and innovation, and empowers our Gurus with tools to fuel their career growth. Disrupting a trillion-dollar industry requires fresh and diverse perspectives. Come join us for the ride! Role overview Join our first Dublin engineering team! The International team is seeking a talented and driven Principal Software Development Engineer to join CarGurus' new Dublin office and lead exciting product initiatives for our Canadian and UK markets and play a key role in establishing the office’s culture.  In this role, you’ll be responsible for leading the full software development lifecycle – across both the frontend and backend – collaborating with Engineering and Product peers to design innovative solutions and tackle complex challenges for our dealer-facing products. We are looking for candidates who are able to learn and adapt quickly, and collaborate with other engineers to deliver solutions. Some examples of potential project opportunities: * Building new, full-stack features for dealer products from the ground up * Integrating with existing services and expanding functionality using React, TypeScript, and Java * Designing and implementing integrations with third-party APIs and partners, building applications with Remix. * Modernizing and rearchitecting current systems to leverage cloud technologies like AWS As a principal engineer on this team, you will own projects from conception to completion, working closely with other engineers and product partners, in Dublin and in the US, to deliver impactful solutions for the international business. Success in this role requires a balance of deep technical expertise and strong business judgement to guide teams in making strategic technology decisions that align with both immediate and future product needs. You must quickly learn and adapt to new challenges, working closely with engineers and stakeholders to translate requirements into scalable solutions.  Car expertise is welcome but isn't required; what matters most is your passion for technology, your commitment to engineering excellence, and your drive to have a real impact. What you'll do * Work closely with engineers, product managers, and stakeholders across the company to refine new product requirements and transform them into effective technical solutions. * Own the full development lifecycle from refining initial concepts and architecting advanced features as robust microservices and modern web applications (Java/React/TypeScript), to implementing and delivering practical, high-quality systems. * Contribute to high standards of quality by ensuring code is reliable, performant, and well-tested, with automated tests across the testing pyramid that ensure strong production health of our systems. * Promote a culture of observability and operation excellence by helping teams leverage metrics to diagnose, mitigate, and resolve challenging production issues across multiple services and boost operational excellence. * Use AI technologies, optimizing the software development process and driving greater efficiency across teams. * Mentor engineers by offering guidance, actionable feedback, and insightful recommendations to support sound technical decision-making in the new Dublin hub. What you'll bring * 8+ years of experience as a professional Software Engineer, including 3+ years serving as a technical lead or principal engineer. * Deep full-stack expertise working with Java and TypeScript (or similar languages) and frameworks such as Spring Boot, Hibernate, and React. * 5+ years of experience designing, building, deploying, scaling, testing, and evolving distributed systems using service-oriented architecture in 24/7 production environments. * 2+ years of experience using cloud infrastructure technologies such as AWS, Terraform or similar cloud services. * Hands-on experience working with both relational and NoSQL databases, applying the right data models to diverse needs. * Experience in operating and troubleshooting production systems. * Outstanding written and verbal communication abilities, with a demonstrated talent for translating technical concepts for both engineering and business audiences. * Consistent record of being self-motivated, resourceful, and proactive in driving projects and business goals. * An aptitude for leveraging AI tools such as Claude Code, Cursor, or similar to enhance software development and operational efficiency. Additional hands-on experience with LLMs is a huge plus. * Bonus: Deep experience with server-side TypeScript and modern isomorphic frameworks (especially Remix, though Next.js or Express are also highly valued). The displayed range represents the expected annual base salary / On-Target Earnings (OTE) for this position. On-Target Earnings (OTE) is inclusive of base salary and on-target commission earnings, which applies exclusively to sales roles. Individual pay within this range is determined by work location and other factors such as job-related skills, experience, and relevant education or training. This annual base salary forms part of a comprehensive Total Rewards Package. In addition to benefits, this role may qualify for discretionary bonuses/incentives and Restricted Stock Units (RSUs). Position Pay Range €90.000—€108.000 EUR Working at CarGurus We reward our Gurus’ curiosity and passion with best-in-class benefits and compensation, including equity for all employees, both when they start and as they continue to grow with us. Our career development and corporate giving programs, as well as our employee resource groups (ERGs) and communities, help people build connections while making an impact in personally meaningful ways. A flexible hybrid model and robust time off policies encourage work-life balance and individual well-being. Thoughtful perks like daily free lunch, a new car discount, meditation and fitness apps, commuting cost coverage, and more help our people create space for what matters most in their personal and professional lives. CarGurus may require in-person interviews as part of our hiring process, particularly for positions based in our Boston and Dublin offices. Candidates selected for an in-person interview will be notified in advance. Please be aware that travel expenses are the responsibility of the candidate. We welcome all CarGurus strives to be a place to which people can bring the ultimate expression of themselves and their potential—starting with our hiring process. We do not discriminate based on race, color, religion, national origin, age, sex, marital status, ancestry, physical or mental disability, veteran status, gender identity, or sexual orientation. We foster an inclusive environment that values people for their skills, experiences, and unique perspectives. That’s why we hope you’ll apply even if you don’t check every box listed in the job description. We also encourage you to tell your recruiter if you require accommodations to participate in our hiring process due to a disability so we can provide the appropriate support. We want to know what only you can bring to CarGurus. #LI-Hybrid

Zscaler

About Zscaler Zscaler accelerates digital transformation to ensure our customers can be more agile, efficient, resilient, and secure. As an AI-forward enterprise, we are constantly pushing the envelope, leveraging the world’s largest security data lake to power our cloud-native Zero Trust Exchange platform. This innovation protects our customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. Here, impact in your role matters more than title and trust is built on results. We say, impact over activity. We seek innovators who actively use AI to amplify their impact and who thrive in an environment where we leverage intelligent systems to stay ahead of evolving threats. We believe in transparency and value constructive, honest debate—we’re focused on getting to the best ideas, faster. We build high-performing teams that can make an impact quickly and with high quality. To do this, we are building a culture of execution centered on customer obsession, collaboration, ownership, and accountability. We value high-impact, high-accountability with a sense of urgency where you’re enabled to do your best work and embrace your potential. If you’re driven by purpose, thrive on solving complex challenges, and want to be part of the team that’s helping to secure the AI age, we invite you to bring your talents to Zscaler and help shape the future of cybersecurity.    Role  We are looking for a Principal Software Development Engineer to join our team. This is a Hybrid, Bangalore role, reporting to the Sr. Director, Application Engineering - Central Authority in the Central Authority department. You will work on the control plane for the Zscaler Internet Access (ZIA) product, which has redefined how security services are delivered in the cloud. You bring a deep understanding of security protocols and services to help us build the next generation of cloud security. What you’ll do (Role Expectations) * Lead the technical roadmap to modernize enterprise platforms using API-first design and microservices architecture * Design, develop, and deploy highly resilient, low-latency, event-driven solutions while maintaining ownership from API tiers to back-end services * Drive a culture of quality by setting coding standards, performing code reviews, and championing TDD/BDD practices and mentorship * Partner with Product, DevOps, and System Architects to translate complex business needs into scalable, high-performance technical solutions * Manage service lifecycles via Docker/Kubernetes and ensure system health using observability tools like Prometheus and Grafana Who You Are (Success Profile) * You thrive in ambiguity. You're comfortable building the path as you walk it. You thrive in a dynamic environment, seeing ambiguity not as a hindrance, but as the raw material to build something meaningful. * You act like an owner. Your passion for the mission fuels your bias for action. You operate with integrity because you genuinely care about the outcome. True ownership involves leveraging dynamic range: the ability to navigate seamlessly between high-level strategy and hands-on execution. * You are a problem-solver. You love running towards the challenges because you are laser-focused on finding the solution, knowing that solving the hard problems delivers the biggest impact. * You are a high-trust collaborator. You are ambitious for the team, not just yourself. You embrace our challenge culture by giving and receiving ongoing feedback—knowing that candor delivered with clarity and respect is the truest form of teamwork and the fastest way to earn trust. * You are a learner. You have a true growth mindset and are obsessed with your own development, actively seeking feedback to become a better partner and a stronger teammate. You love what you do and you do it with purpose. What We’re Looking for (Minimum Qualifications) * Foundational understanding of AI/ML technologies and experience leveraging, securing, or positioning AI-driven solutions to optimize outcomes within your functional domain * 13+ years in software development, with at least 8+ years specializing in production-grade microservices * Hands-on experience in modern programming languages such as Java, Go, or Rust * Expertise in distributed data patterns (CQRS, Event Sourcing) and event-driven communication (Kafka, RabbitMQ, or SQS) * Extensive hands-on experience with Docker and Kubernetes within AWS, Azure, or GCP environments, alongside proficiency in both SQL (PostgreSQL, MySQL) and NoSQL (Cassandra, MongoDB, or Cosmos DB) database design and scaling What Will Make You Stand Out (Preferred Qualifications) * Experience implementing AI-assisted engineering tools or integrating predictive AI/ML models to optimize control plane resiliency and automated scalability * Experience with Service Mesh technologies such as Istio or Linkerd * Practical knowledge of chaos engineering and advanced performance testing tools #LI-Hybrid #LI-VV3 At Zscaler, we are committed to building a team that reflects the communities we serve and the customers we work with. We foster an inclusive environment that values all backgrounds and perspectives, emphasizing collaboration and belonging. Join us in our mission to make doing business seamless and secure. Our Benefits program is one of the most important ways we support our employees. Zscaler proudly offers comprehensive and inclusive benefits to meet the diverse needs of our employees and their families throughout their life stages, including: * Various health plans * Time off plans for vacation and sick time * Parental leave options * Retirement options * Education reimbursement * In-office perks, and more! Learn more about Zscaler's hybrid working model and benefits here. By applying for this role, you adhere to applicable laws, regulations, and Zscaler policies, including those related to security and privacy standards and guidelines. Zscaler is committed to providing equal employment opportunities to all individuals. We strive to create a workplace where employees are treated with respect and have the chance to succeed. All qualified applicants will be considered for employment without regard to race, color, religion, sex (including pregnancy or related medical conditions), age, national origin, sexual orientation, gender identity or expression, genetic information, disability status, protected veteran status, or any other characteristic protected by federal, state, or local laws. See more information by clicking on the Know Your Rights: Workplace Discrimination is Illegal link. Pay Transparency Zscaler complies with all applicable federal, state, and local pay transparency rules. Zscaler is committed to providing reasonable support (called accommodations or adjustments) in our recruiting processes for candidates who are differently abled, have long term conditions, mental health conditions or sincerely held religious beliefs, or who are neurodivergent or require pregnancy-related support.

Zscaler

About Zscaler Zscaler accelerates digital transformation to ensure our customers can be more agile, efficient, resilient, and secure. As an AI-forward enterprise, we are constantly pushing the envelope, leveraging the world’s largest security data lake to power our cloud-native Zero Trust Exchange platform. This innovation protects our customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. Here, impact in your role matters more than title and trust is built on results. We say, impact over activity. We seek innovators who actively use AI to amplify their impact and who thrive in an environment where we leverage intelligent systems to stay ahead of evolving threats. We believe in transparency and value constructive, honest debate—we’re focused on getting to the best ideas, faster. We build high-performing teams that can make an impact quickly and with high quality. To do this, we are building a culture of execution centered on customer obsession, collaboration, ownership, and accountability. We value high-impact, high-accountability with a sense of urgency where you’re enabled to do your best work and embrace your potential. If you’re driven by purpose, thrive on solving complex challenges, and want to be part of the team that’s helping to secure the AI age, we invite you to bring your talents to Zscaler and help shape the future of cybersecurity.       Role We are looking for a visionary Principal Software Development Engineer to join our Frontend Engineering team and lead the design, development, and evolution of world-class web applications. Reporting to the Manager of Software Development Engineering, you will play a pivotal role in shaping Zscaler’s next-generation user interfaces. This is a high-impact leadership role where you will balance hands-on architecture with strategic technical direction, mentoring and guiding other engineers to elevate our overall engineering excellence. What You'll Do (Key Responsibilities) * Architect & Deliver: Design and build high-quality ReactJS solutions, specializing in translating complex UI/UX designs into robust, production-ready applications while providing technical mentorship to foster a culture of innovation * Drive Engineering Excellence: Shape and evolve Zscaler’s core design system. Champion frontend best practices, including modularity, semantic code, comprehensive automated testing, and deep performance tuning * Cross-Functional Integration: Define clean API contracts and seamless integration roadmaps in collaboration with backend teams. Partner with DevOps to optimize CI/CD pipelines and continuously evaluate emerging technologies * Scale & Refactor: Lead systematic refactoring efforts to ensure long-term scalability, reliability, and maintainability. Drive engineering excellence with a strong focus on accessibility (a11y) and research-driven methodologies Who You Are (Success Profile) * You Think at Scale: You connect your day-to-day work to the larger company mission and think globally. You build solutions, processes, and architectures that are not just effective today, but are built to last and support a high-growth organization * You are Driven by Innovation: You possess a deep curiosity for how things work and are energized by solving complex technical hurdles. You believe in the power of technology to accelerate transformation and consistently hunt for more secure, scalable methods * You are a Problem-Solver: You actively seek out engineering challenges because you are energized by finding solutions, knowing that solving the hardest problems delivers the biggest business and customer impact * You are Data-Driven: You lean on data and analytics to uncover engineering truths, measure what matters, and guide informed architectural decisions—replacing "I think" with "I know." * You are a Learner: You have a true growth mindset and never stop developing your technical or leadership skills. You actively seek and implement feedback to become an exceptional collaborator and teammate What We're Looking For (Minimum Qualifications) * Experience: 8+ years of professional software development experience, with 5+ years specializing in large-scale, production-grade ReactJS and Redux applications * Technical Mastery: Expert-level proficiency in ReactJS development using TypeScript, ES6+, and advanced state management paradigms * Data Visualizations: Proven experience building highly complex UIs, data-heavy dashboards, and advanced data visualizations (e.g., D3.js) * Testing Excellence: Deep expertise in developing extensive unit, integration, and E2E testing suites using frameworks such as Jest, Enzyme, or Cypress * Enterprise Architecture: Proven track record of designing and deploying large-scale enterprise UIs emphasizing high availability, performance, and a seamless global user experience * AI Tool Integration: Demonstrated curiosity and active exploration of AI tools, with a history of integrating modern technologies to enhance daily workflows and augment problem-solving capabilities What Will Make You Stand Out (Preferred Qualifications) * Advanced experience driving performance optimization (speed, responsiveness) using cutting-edge techniques such as lazy loading, code splitting, and tree shaking to enhance application scalability * Strong familiarity with backend development principles and practical experience using Node.js (or similar) for API integration, tooling, and debugging * Ability to architect and implement scalable, modular solutions tailored for multi-tenant enterprise applications, ensuring future-proofed system development #LI-SK3  #LI-HYBRID At Zscaler, we are committed to building a team that reflects the communities we serve and the customers we work with. We foster an inclusive environment that values all backgrounds and perspectives, emphasizing collaboration and belonging. Join us in our mission to make doing business seamless and secure. Our Benefits program is one of the most important ways we support our employees. Zscaler proudly offers comprehensive and inclusive benefits to meet the diverse needs of our employees and their families throughout their life stages, including: * Various health plans * Time off plans for vacation and sick time * Parental leave options * Retirement options * Education reimbursement * In-office perks, and more! Learn more about Zscaler's hybrid working model and benefits here. By applying for this role, you adhere to applicable laws, regulations, and Zscaler policies, including those related to security and privacy standards and guidelines. Zscaler is committed to providing equal employment opportunities to all individuals. We strive to create a workplace where employees are treated with respect and have the chance to succeed. All qualified applicants will be considered for employment without regard to race, color, religion, sex (including pregnancy or related medical conditions), age, national origin, sexual orientation, gender identity or expression, genetic information, disability status, protected veteran status, or any other characteristic protected by federal, state, or local laws. See more information by clicking on the Know Your Rights: Workplace Discrimination is Illegal link. Pay Transparency Zscaler complies with all applicable federal, state, and local pay transparency rules. Zscaler is committed to providing reasonable support (called accommodations or adjustments) in our recruiting processes for candidates who are differently abled, have long term conditions, mental health conditions or sincerely held religious beliefs, or who are neurodivergent or require pregnancy-related support.