Senior Software Engineer - Machine Learning (f/m/d)

Toast

Toast creates technology to help restaurants and local businesses succeed in a digital world, helping business owners operate, increase sales, engage customers, and keep employees happy. Toast is looking for a Senior Software Engineer to join our Identity Management team to play a critical role in developing reliable code and algorithms in our user management, permission, and web services.  We are looking for an engineer who has the ability and drive to make an impact, not only on their own but by also enabling those around them to succeed.   Partnering with stakeholders, product managers, product designers, product data analysts, and other engineers, you will be part of a team responsible for ensuring that our practices in the development of our platform are safe and secure.  You will also be responsible for developing and maintaining core services and repositories in Toast, including integrations, managing users, authentication, and permissions. The Toast platform processes tens of millions of requests per day, and this number grows constantly as we add new restaurants and integration partners to our system. The services we develop on this team are essential for Toast’s operation and their resilience and reliability are crucial from a business and user perspective. If you want to help create something tangible that is used every day, help small businesses achieve their vision, and take on the challenge of scaling a SaaS product from millions of users to hundreds of millions of users, Toast is the place for you. A day in the life (Responsibilities) * Be part of a team working collaboratively with UX, PM, QA and other engineers designing, building and maintaining high performance, flexible and highly scalable microservices, as well as development of web and mobile applications * Define best practices and help choose technologies to evolve our current tech. stack while writing world-class applications * Championing best practices such as quality integration and unit testing * Tackle scaling challenges and implement robust solutions. * Provide design feedback and participate in code reviews to ensure implementations meet requirements * Monitor feature rollouts to ensure customer success, iterating and improving when necessary. * Design, build, deploy, and maintain highly resilient and scalable systems critical to our customers’ success. * Diagnose performance bottlenecks and optimise for better performance. * Ensure that all work done is delivered with quality and is appropriately monitored and supported in production * Mentoring other team members What you'll need to thrive (Requirements) * Proficient in Java, Kotlin or another object-oriented language, with a deep understanding of testing, quality & best practices. * In-depth understanding of microservices, distributed systems, and enterprise messaging. * Familiar with asynchronous communication tools (e.g., Pulsar, JMS, Kafka). * Proven track record of delivering reliable services to production. * Excellent communication skills, with the ability to simplify complex technical concepts for non-technical stakeholders. * A passion for technology and continuous learning. * Prior experience making an impact on a previous project, product or within an organization. * Enthusiasm for solving impactful challenges and writing clean, scalable code. * A focus on both personal and team growth, balancing task completion with platform stability. * The capacity to tackle complex and ambiguous problems, communicate clearly with others to solve the problem, and share knowledge to help the whole team succeed * Experience working in the IAM space * Exposure to distributed systems is a plus * Experience working in a team with Agile/Scrum methodology **This is a hybrid role requiring in-office collaboration two days per week in our Dublin office.** AI at Toast At Toast, one of our company values is that we're hungry to build and learn. We believe learning new AI tools empowers us to build for our customers faster, more independently, and with higher quality. We provide these tools across all disciplines, from Engineering and Product to Sales and Support, and are inspired by how our Toasters are already driving real value with them. The people who thrive here are those who embrace changes that let us build more for our customers; it’s a core part of our culture. Our Total Rewards Philosophy We strive to provide competitive compensation and benefits programs that help to attract, retain, and motivate the best and brightest people in our industry. Our total rewards package goes beyond great earnings potential and provides the means to a healthy lifestyle with the flexibility to meet Toasters’ changing needs. Learn more about our benefits at https://careers.toasttab.com/toast-benefits. #LI-HYBRID #BI-Hybrid How Toast Uses AI in its Hiring Process Throughout the hiring process, our goal is to get to know you. We use AI tools to support our recruiters and interviewers with tasks like note-taking, summarization, and documentation of interviews to ensure they can be fully focused on your conversation. All hiring decisions are made by people. To learn more: https://careers.toasttab.com/ai-in-hiring Our Approach to Hybrid Working We embrace a hybrid work model that fosters in-person collaboration while valuing individual needs. Our goal is to build a strong culture of connection as we work together to empower the hospitality community, regardless of location. Please visit the Locations page on our career site to learn more about our in-office expectations by region: https://careers.toasttab.com/locations-toast Diversity, Equity, and Inclusion is Baked into our Recipe for Success At Toast, our employees are our secret ingredient—when they thrive, we thrive. The restaurant industry is one of the most diverse, and we embrace that diversity with authenticity, inclusivity, respect, and humility. By embedding these principles into our culture and design, we create equitable opportunities for all and raise the bar in delivering exceptional experiences. We Thrive Together We embrace a hybrid work model that fosters in-person collaboration while valuing individual needs. Our goal is to build a strong culture of connection as we work together to empower the restaurant community. To learn more about how we work globally and regionally, check out: https://careers.toasttab.com/locations-toast. Apply today! Toast is committed to creating an accessible and inclusive hiring process. As part of this commitment, we strive to provide reasonable accommodations for persons with disabilities to enable them to access the hiring process. If you need an accommodation to access the job application or interview process, please contact candidateaccommodations@toasttab.com. ------ For roles in the United States, it is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

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 Senior Software Development Engineer to join CarGurus' new Dublin office and work on 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 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 * Modernizing and implementing current systems to leverage cloud technologies like AWS As an engineer on this team, you will drive projects from conception to completion, working closely with other engineers and product partners to deliver impactful solutions for the international business. No need to be a car expert—we’re more interested in your passion for engineering and your ability to innovate! What you'll do * Design, develop, and maintain scalable full-stack features and APIs using Java, React, and TypeScript that support our international dealer products. * Collaborate closely with product managers, designers, and other engineers across the organization to deliver and iterate on high-quality software solutions for our Canadian and UK markets. * Contribute to technical design discussions and architectural decisions. * Own services from ideation through deployment and ongoing maintenance in production environments. * Ensure systems are secure, maintainable, and highly available, following best practices in performance optimization and code quality. * Troubleshoot and resolve complex production issues, using observability tools to understand system health and performance. * Mentor junior engineers, provide high-quality code review guidance, and contribute to establishing the team processes and engineering standards for the new Dublin office. What you'll bring * 5+ years of experience in full-stack software development. * Deep expertise in Java (Spring Boot, Hibernate, or similar frameworks). * Solid, production-grade experience building dynamic, responsive user interfaces using React and TypeScript. * Experience designing and building RESTful APIs, microservices, and distributed systems. Experience with GraphQL. * Strong knowledge of databases (SQL and NoSQL), caching, and data structures. * Familiarity with cloud platforms such as AWS, GCP, or Azure, and some experience with containerization (Docker, Kubernetes). * Understanding of CI/CD pipelines, automated testing, monitoring, and production service management. * Excellent problem-solving, communication, and collaboration skills with the ability to move quickly and thrive in an iterative, fast-paced environment. * Eagerness to learn and expand your capabilities through leading and owning projects. * Bonus: Experience with server-side TypeScript (especially Remix, though Next.js or Express are also great additions). 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 €78.000—€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

Toast

Toast creates technology to help restaurants and local businesses succeed in a digital world, helping business owners operate, increase sales, engage customers, and keep employees happy. Your mission is to drive architecture, technical strategy, and implementation of AI agents for Toast's Team area which is part of the Fintech line of business. You will be one of the most senior technologists in line of business. The Team area is a mission-critical space on which our restaurants rely to manage their staff and optimize their labor. Beyond being on the forefront of agent development, your scope will also include enablement and leadership for how software is developed at Toast through adoption of bleeding edge spec driven development and other paradigms.  A day in the life (Responsibilities) * Develop and drive an architectural vision to support the ambitious goals for agents and agent development * Be an active participant and an authoritative technical voice in FinTech product strategy discussions * Partner with the Team Management Director of Engineering and Sr. Director of Product to successfully deliver Team agent products from design to production * Work closely with other Senior Principal Engineers to further the agent patterns and ecosystem across Toast as a whole * Evolve an ever more efficient way of working through agents and spread it across Toast * Work directly with the product manager for the Team Agent space, collaborating to drive vision * Be hands on and actively participate in development on the Team Agent * Mentor and develop technical leadership across Team, and Fintech What you'll need to thrive (Requirements) * 15+ years experience designing and building highly scalable, mission-critical distributed and fullstack software systems * 10+ years experience building and operating SaaS products, ideally AWS hosted * A strong desire to lean all in on agentic development practices * Passion for building autonomous agents * Demonstrated ability to drive technical architecture for a company or highly scalable line of products * A desire to work not only with technologists but also product owners and business leaders * Ability and desire to draw big lines and boxes on a whiteboard paired with the ability to dig in and understand the ebb and flow of what the code is doing under load * Ability and desire to communicate and influence at the executive level What will help you stand out (Nonessential Skills/Nice to Haves) * Experience designing agentic products * Experience building systems that leverage LLMs and other ML models * Experience with enterprise integration using Apache Camel * Experience architecting event-driven distributed systems using Apache Pulsar * Experience defining test, build and deploy strategies * Solid understanding of workforce management * Solid understanding of restaurant operations Location: Remote (within Ireland) or Hybrid (Dublin) #LI-Remote   AI at Toast At Toast, one of our company values is that we're hungry to build and learn. We believe learning new AI tools empowers us to build for our customers faster, more independently, and with higher quality. We provide these tools across all disciplines, from Engineering and Product to Sales and Support, and are inspired by how our Toasters are already driving real value with them. The people who thrive here are those who embrace changes that let us build more for our customers; it’s a core part of our culture. Our Total Rewards Philosophy  We strive to provide competitive compensation and benefits programs that help to attract, retain, and motivate the best and brightest people in our industry. Our total rewards package goes beyond great earnings potential and provides the means to a healthy lifestyle with the flexibility to meet Toasters’ changing needs. Learn more about our benefits at https://careers.toasttab.com/toast-benefits. How Toast Uses AI in its Hiring Process Throughout the hiring process, our goal is to get to know you. We use AI tools to support our recruiters and interviewers with tasks like note-taking, summarization, and documentation of interviews to ensure they can be fully focused on your conversation. All hiring decisions are made by people. To learn more: https://careers.toasttab.com/ai-in-hiring Our Approach to Hybrid Working We embrace a hybrid work model that fosters in-person collaboration while valuing individual needs. Our goal is to build a strong culture of connection as we work together to empower the hospitality community, regardless of location. Please visit the Locations page on our career site to learn more about our in-office expectations by region: https://careers.toasttab.com/locations-toast Diversity, Equity, and Inclusion is Baked into our Recipe for Success At Toast, our employees are our secret ingredient—when they thrive, we thrive. The restaurant industry is one of the most diverse, and we embrace that diversity with authenticity, inclusivity, respect, and humility. By embedding these principles into our culture and design, we create equitable opportunities for all and raise the bar in delivering exceptional experiences. We Thrive Together We embrace a hybrid work model that fosters in-person collaboration while valuing individual needs. Our goal is to build a strong culture of connection as we work together to empower the restaurant community. To learn more about how we work globally and regionally, check out: https://careers.toasttab.com/locations-toast. Apply today! Toast is committed to creating an accessible and inclusive hiring process. As part of this commitment, we strive to provide reasonable accommodations for persons with disabilities to enable them to access the hiring process. If you need an accommodation to access the job application or interview process, please contact candidateaccommodations@toasttab.com. ------ For roles in the United States, it is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.