Full Stack Software Engineer, Commerce Platform (Senior)

Overview

The Commerce Platform team helps every customer to effortlessly and securely pay for their transactions using their preferred payment methods. Joining this team is a unique opportunity to shape the next generation of Instacart's foundational platform, and contribute to our exponential growth. Join us in ensuring the seamless processing of millions of orders, credit card transactions, and invoice calculations every day.

About the Job

You will be part of a small and dynamic group that encourages ownership, fosters collaboration, and values continuous improvement. You’ll work closely with Front-End engineers to set high standards for product and code quality within our web applications. With our server-driven client/server architecture, you will have the opportunity to engage in full-stack development. Your contributions will span the entire development process, from problem understanding to delivering innovative solutions. 

Additionally, you will collaborate with product managers, designers, internal and external partners, and other teams to drive successful outcomes. Maintaining our engineering standards and promoting codebase consistency will be among your key responsibilities. By shipping high-quality, scalable, and robust solutions, you will help us shape the future of Instacart. Furthermore, you will have the freedom to suggest and lead organization-wide initiatives that drive innovation and excellence.

About You

Minimum Qualifications

We are seeking a talented and experienced Software Engineer who is passionate about building web applications and dedicated to delivering exceptional user experiences. To excel in this role, you should possess the following qualifications:

• 6+ years of software development experience
• Solid experience in building web applications using HTML, CSS, Rails, and React.js (or comparable frameworks).
• Strong understanding of UX principles and a keen eye for usability issues in web applications.
• Proficiency with front-end testing frameworks such as Jest, Mocha, or Enzyme.
• Familiarity with Ruby on Rails framework and experience using Sorbet for strong-typing.
• Experience working with client-facing flexible APIs exposed via GraphQL.
• Knowledge of backend relational data stores like Postgres and Snowflake.
• Experience with caching and durable job dispatching using tools like Memcached and Redis.
• Proficiency in building rich monitoring and alerting infrastructure using tools like AWS CloudWatch, DataDog, Sentry, OpsGenie, and related services.
• Proactive and adaptable mindset, with the ability to research, propose, implement, and deploy new integrations.

Preferred Qualifications

• Experience with order management systems (OMS) or eCommerce platforms that handle the end-to-end order lifecycle.  Understanding of the overall eCommerce operations and processes involved in managing customer orders, from the point of placing an order to delivery
• In-depth understanding of various payment systems and methods used in eCommerce, including credit/debit cards, digital wallets, mobile payments, and alternative payment solutions. Familiarity with payment gateways and payment service providers (PSPs) is also valuable
• Expertise in invoicing and billing processes within an ecommerce environment. This includes being familiar with customer invoices, resolving discrepancies, and managing invoicing cycles.Familiarity with relevant invoicing regulations and tax requirements is beneficial.
• Experiment frameworks and data driven approach to development
• Experience with cross-browser compatibility, accessibility, and building reusable components or front-end libraries