• Design, develop, and maintain scalable backend services using Spring Boot • Build responsive and user-friendly UI components using React • Collaborate with product managers, designers, and other developers • Write clean, maintainable, and well-tested code • Troubleshoot, debug, and optimize application performance • Participate in code reviews and technical discussions

Role Description - Shipping & handling responsibilities - Implement end-to-end (frontend, backend) solutions for new features and experiences - Contribute to reusable components that enhance product consistency - Participate in on-call support rotation - Develop and lead execution against both short-term and long-term roadmaps - Work with our product and design teams to refine the scope of new products and capabilities - Collaborate with other engineers to create milestones that support product requirements - Implement tools and telemetry to better understand technical and business impact Qualifications - BSc in a STEM field, with a preference for computer science and software engineering or equivalent work experience - Minimum 4+ years of experience in software development - Experience working across both backend and frontend development, including APIs, services, databases, and modern UI frameworks - Proficiency with React and Typescript - Familiarity with python, django, SQL databases (Postgres), kubernetes - Strong collaboration skills, with the ability to work effectively with cross-functional teams - Clear communication skills, with the ability to explain technical concepts to different audiences - A mindset of continuous learning, craftsmanship, and team success Requirements - Bonus: Experience with Go, AWS, billing and payment systems (Stripe) - Bonus: Experience with Claude Code and shipping AI powered features Benefits - Here at Shippo, we celebrate inclusivity and are committed to creating equal access to opportunities for people from all backgrounds, perspectives and geographies - 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 accommodations@shippo.com Company Description - Our people, much like the packages we help ship, are all over the world - 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 - Many roles can be based internationally - For locations outside of the US and Ireland, the employment contracts are powered by Rippling.com

Role Description The Math Expert (PhD) will be responsible for the following: - Develop and provide comprehensive, accurate, and insightful responses to complex mathematics prompts spanning undergraduate and graduate curricula. - Review, refine, and deliver "golden responses"—high-quality model answers that exemplify subject mastery for use in AI training. - Collaborate with a distributed team of experts to ensure clarity, precision, and educational value in all mathematics content produced. - Analyze and interpret intricate mathematical problems, proofs, and concepts, distilling them into structured and accessible explanations. - Contribute feedback to improve project guidelines, response standards, and content workflows as the engagement evolves. - Adhere to project requirements regarding format, quality, and timeliness of deliverables. Qualifications - PhD in Mathematics or closely related discipline from an accredited institution. - Proven track record of academic excellence and subject-matter expertise, especially at the graduate level. - Exceptional written and verbal communication skills; ability to articulate complex concepts clearly and succinctly. - Experience authoring or reviewing mathematics materials, such as textbooks, exams, problem sets, or journal articles. - Familiarity with various branches of pure and applied mathematics. - Demonstrated attention to detail and commitment to producing precise, high-quality work. - Adaptability and openness to collaborative, iterative feedback in a remote expert network environment. Requirements - Experience: 4 - 10 Years - Contract Duration: 4 Months (3 - 6 months depending on the project). - A candidate should be able to commit a minimum of 15+ hours of work per week. - Candidate has the flexibility to choose their work hours. Benefits - Payout: USD 40 - 85 Hourly - Location: Remote (Europe, North America, South Asia, Southeast Asia) Interview Process - Technical AI - Interview - Fitment - Offer release

• Build and ship React Native features across iOS and Android, working closely with product managers and designers to deliver polished, production-ready experiences. • Participate in technical design discussions, applying your understanding of the app architecture to propose sound, maintainable solutions at the feature level. • Write well-tested code and take part in code reviews with a focus on correctness, clarity, and security, not just checking boxes. • Use AI-assisted development tools to accelerate implementation, documentation, and troubleshooting, then critically evaluate the output before it lands in the codebase. • Identify and help resolve performance issues, crashes, and reliability gaps in production mobile applications. • Break down moderately complex problems into clear tasks, estimate timelines with your team's input, and surface blockers before they become escalations. • Work within and contribute to the mobile CI/CD pipeline (GitHub Actions, Bitrise, Fastlane), understanding how builds, tests, and releases come together end to end. • Follow shared component and coding standards that keep the codebase consistent across teams and apps, and contribute improvements where you see them.