Senior Software Engineer, IAM

Toast; San Francisco (CA); Hybrid; USD 125,370 - 159,562; Full time

Job summary

Toast is hiring a Senior Software Engineer for the Identity Management team in Dublin. You will build reliable user management, authentication, and permission services, contributing to a SaaS platform used by millions of users.

Join a collaborative, agile environment with cross-functional partners, scale services to meet growing demand, and mentor peers while improving platform resilience and security.

Qualifications

• Proficiency in Java or Kotlin with strong testing and code quality practices.
• Solid understanding of microservices, distributed systems and enterprise messaging.
• Experience with asynchronous messaging using Kafka, Pulsar or JMS.
• Proven track record delivering reliable services to production.
• Excellent verbal and written communication skills for cross-functional collaboration.
• Passion for technology and continuous learning; able to tackle complex problems.
• Experience in IAM is a plus and Agile/Scrum experience.

Responsibilities

• Collaborate with UX, PM and QA and engineers to build scalable microservices and web/mobile features.
• Define best practices, select technologies, and evolve the stack while delivering high-quality apps.
• Champion quality through testing and code reviews across the team.
• Address scaling challenges and implement robust, observable solutions.
• Mentor teammates and share knowledge to improve the whole team's outcomes.
• Ensure production reliability and monitor feature rollouts for customer success.

Skills

Java

Kotlin

Microservices

Distributed systems

Messaging

IAM

Agile

Communication

Continuous learning

Tools

Kafka

Pulsar

JMS

Job description

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.

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.

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 [e-mail].

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.