Software Engineer III, Labels

Role Description

• Design, implement, test, and deploy software services with high SLAs that can handle millions of requests a day.
• Ensure scalability and maintainability through microservices adoption, decoupling of concerns and data model, queuing of jobs, 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 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.

Qualifications

• 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.
• 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.
• 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).
• Exhibit core behaviors focused on craftsmanship, continuous improvement, and team success.
• BS or MS degree in Computer Science or equivalent experience.
• Advanced/Fluent English.

Requirements

• 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.
• 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.

Benefits

• Inclusivity and equal access to opportunities for people from all backgrounds, perspectives, and geographies.
• Remote-first program, “Shippos Everywhere”, allowing roles to be based anywhere in the US (with some exceptions) and many roles can be based internationally.
• Employment contracts powered by Rippling.com for locations outside of the US and Ireland, with all Shippo perks still applying.