Software Engineer III, Labels

About Shippo At Shippo, our vision is bold and clear: we are the shipping layer of the internet. Our mission is to make every merchant successful through excellent shipping, delivering world-class logistics technology and infrastructure. We’re building the backbone of global e-commerce — connecting merchants to carriers worldwide through a single API and intuitive dashboard. As a remote-first and globally distributed team , we believe flexibility fuels trust, autonomy, and performance. Our diverse perspectives — across continents, cultures, and time zones — drive our innovation and enable us to build solutions used by businesses everywhere. We invest in modern, scalable technology so our teams can build, ship, and iterate with confidence. Your impact starts here: every person at Shippo plays a direct role in shaping the infrastructure that powers global commerce and makes shipping simpler for businesses around the world. How we will deliver success together: We are looking for a Backend Software Engineer to join our Labels team! The Labels team is a critical revenue-generation engine at Shippo, responsible for managing label purchases across multiple carriers like USPS, UPS and FedEx, and processing refunds at scale. We handle high-volume transactional work requiring speed, reliability, and proactive incident response. Shipping & handling responsibilities Design, implement, test, and deploy software services with high SLAs and that can handle millions of requests a day Ensure scalability and maintainability through microservices adoption, decoupling of concerns and data model, queuing of jobs and application layering and container-based software distribution. Continue to build out and enhance our CI/CD pipeline for smooth and safe production releases via automated testing and verification. Verify and ensure performance and correctness of systems in response time and throughput. Design and maintain database schema for large scale and performant services Architect systems and refactor existing systems for optimal performance and reuse Participate in peer reviews and testing and contribute to automated test suites and in design reviews for new features, products, and systems Collaborate with business teams and provide early input to new product ideas and functionality Experience being on-call and able to respond quickly to system incidents Champion testing procedures and automation in support of vertical and horizontal scale. Assist with hands-on work in gathering business requirements, development, and verification. Your shipping requirements 6+ years of experience in software development Strong interpersonal skills and the ability to work with all levels of the organization. Past experience and success building and supporting scalable APIs, services, or applications Solid understanding of object-oriented programming and familiarity with various design and architectural patterns. Exceptional verbal, written, and interpersonal communication skills. You are adept at communicating relevant information clearly and concisely. Deep understanding of customer needs and passion for customer success. Ability to look ahead to identify opportunities, foster a culture of innovation, and build for scale. Coding experience in server-side programming languages (e.g. Go, Python, Java, Ruby) as well as database languages (SQL) Consistent, hands-on experience using coding agents (e.g. Claude Code, Cursor) throughout the SDLC including debugging, testing, and code review, with strong judgment in critically evaluating and validating agent output before it ships. Experience configuring AI tooling at the project level and a track record of building and sharing workflows or patterns that teammates have adopted. Experience working with server-side MVC frameworks (e.g. Django, .NET, Spring, Rails, Phoenix) Solid understanding of object-oriented programming and familiarity with various design and architectural patterns Deep understanding of customer needs and passion for customer success Exhibit core behaviors focused on craftsmanship, continuous improvement, and team success BS or MS degree in Computer Science or equivalent experience Advanced/Fluent English Bonus Prior experience working or interacting with shipping and/or postal carriers Experience using GoLang and Python in production Familiarity with microservices architectures Experience integrating with APIs that use REST, SOAP, gRPC and other technologies Interest and experience in performance tuning, concurrency, microservices, security, data analytics, and web stack Experience with context engineering: structuring codebases, architecture docs, and READMEs to be AI-readable, treating documentation as an input to agents Experience with Django Past experience and success in building scalable APIs or services Experience with DevOps tooling such as Docker, Terraform, CircleCI, SumoLogic, PagerDuty, etc Experience with AWS/Cloud services such as EC2, S3, Lambda, Route 53, Cloud Formation, Cloudflare, Elastic Beanstalk, IAM, etc. Sail through the process: Here at Shippo, we celebrate inclusivity and are committed to creating equal access to opportunities for people from all backgrounds, perspectives and geographies. These values define who we are and everything we do. All qualified individuals are encouraged to apply. If you need assistance, or a reasonable accommodation during the application and recruiting process, please contact us at [email protected] Shippo s in the wild: Our people, much like the packages we help ship, are all over the world. This means, through our remote-first program, “Shippos Everywhere”, our roles can be based anywhere in the US with the exception of Delaware, Nevada, Ohio, Oregon, Hawaii, New Mexico and West Virginia and many roles can be based internationally. For locations outside of the US and Ireland, the employment contracts are powered by Rippling.com (all Shippo perks still apply - including equity!). What we want to emphasize is that you can be successful at Shippo regardless of location.