Principal Software Engineer

Toast is looking for a Principal Software Engineer to take responsibility for bringing our architecture to the next level and level up the team. As well as providing a cutting edge point of sale system for restaurants, Toast also processes billions of dollars of payments, and offers best-in-class financial service solutions to our customers. As we grow our solutions to meet the needs of our customers, we are also focused on optimizing for extensibility, resilience and scalability, using continuous delivery tools & methodology.

As a Principal Software Engineer on our team, you will:

• Design and deliver the next generation of Toast products.
• Document solution design, write & review code, test and rollout solutions to production, capturing & actioning customer feedback to iteratively enhance customer experience
• Collaborate with peers to optimize for solution design performance, flexibility and scalable, including enablement of multi-product & engineering teams on a common framework & platform
• Collaborate with UX, Product Management, QA and partner engineering teams to build best-in-class solutions in a complex and fast-moving environment
• Directly coach and mentor engineers on best in class industry standard development best practices

Requirements:

• Experience with continuous delivery of high quality, reliable and scalable services to production
• Experience in AI, Cloud, Image processing and Full stack development.
• Proficient in database technologies such as SQL server, Postgres, or Dynamo DB.
• Proficient in cloud technologies such as AWS, Azure or GCP.
• Proficient in Java, Kotlin, C# or other object oriented language(s).
• Experience working in a team with Agile/Scrum methodology
• Experience leading the build and scale of mission critical platform components
• Experience of tackling complex and ambiguous problems, communicate clearly with others to solve the problem, and share knowledge to help the whole team succeed
• Proficient in balancing getting things done with platform stability
• Passionate about writing awesome code and delivering impactful scalable solutions
• Hands-on mentoring of other engineers.

Tech Stack: Toast's products run on a stack that ranges from guest and restaurant-facing Android tablets to backend services in Java to internal, guest-facing and restaurant-facing web apps. Our backend services follow a microservice architecture written using Java 8 and DropWizard; we use AWS extensively, ranging from S3 to RDS to Lambda. We have our own platform for dealing with user management, service elevations and robust load balancing. Toast stores data in a set of sharded Postgres databases and utilizes Apache Spark for large scale data workloads including query and batch processing. The front-end is built primarily using React and ES6. The main Toast POS application is an Android application written in Java and Kotlin. For data between tablets and our cloud platform we operate RabbitMQ clusters as well as direct tablet communication to the back end.

Toast uses .Net/C# and Java for the backend. The front-end is primarily written in MVC, React and Angular. We also use SQL Server/Aurora postgres for our database. Other technologies include SQS, SNS, Dynamo, SageMaker, Cloudwatch, Redshift, etc.