Software Engineer Intern (Summer 2026)

Block is one company built from many blocks, all united by the same purpose of economic empowerment. The blocks that form our foundational teams - People, Finance, Counsel, Hardware, Information Security, Platform Infrastructure Engineering, and more - provide support and guidance at the corporate level. They work across business groups and around the globe, spanning time zones and disciplines to develop inclusive People policies, forecast finances, give legal counsel, safeguard systems, nurture new initiatives, and more. Every challenge creates possibilities, and we need different perspectives to see them all. Bring yours to Block.
The Role
We're looking for passionate Software Engineering Interns to join our engineering teams for a hands-on learning experience. As an intern, you'll partner with experienced engineers to solve real-world problems, contribute to our codebase, and help build products used by millions of people. This internship offers meaningful projects, mentorship, and the opportunity to make a tangible impact while developing your technical skills.
Engineering Disciplines
We offer internship opportunities across multiple engineering disciplines:

• Frontend Engineering
• Backend Engineering
• Platform Engineering
• Mobile Engineering - iOS
• Mobile Engineering - Android

You Will:

• Collaborate with engineers to complete features for Block's product ecosystem
• Write clean, efficient, and maintainable code that meets our standards for quality and performance
• Participate in code reviews to receive feedback and improve your technical skills
• Debug issues and help improve our systems' reliability and performance
• Learn industry best practices for software development, testing, and deployment
• Attend technical workshops, learning sessions, and social events designed for interns
• Present your project work to team members and leadership at the end of your internship

You Have:

• Basic Qualifications
• Currently pursuing a Bachelor's or Master's degree in Computer Science, Software Engineering, or a related technical field with a graduation date between May 2027 and May 2028
• Programming experience in at least one language (e.g., Java, Kotlin, Swift, JavaScript, Python, Ruby, Go)
• Understanding of fundamental data structures and algorithms
• Familiarity with basic software development concepts and practices
• Experience ensuring that code meets all functionality and acceptance criteria
• Experience troubleshooting issues with users
• Preferred Qualifications
• Previous internship, project, or coursework experience in software development
• For Frontend: Experience with modern JavaScript frameworks (React, Vue, Angular)
• For Backend: Knowledge of API design, databases, and server-side development
• For Infrastructure: Familiarity with cloud platforms (AWS, GCP) or containerization (Docker, Kubernetes)
• For iOS: Experience with Swift, UIKit, or SwiftUI
• For Android: Experience with Kotlin or Java for Android development
• Experience with version control systems (e.g., Git)
• Interest in financial technology and commerce solutions
• Demonstrated experience building user-focused products

Internship Details

• Duration: 12 weeks -16 weeks (Summer 2026)
• Location: Toronto, ON / Remote (CAN)

What We Offer

• Real-World Projects: Work on meaningful projects that impact our products and customers
• Mentorship: One-on-one guidance from experienced engineers dedicated to your growth
• Community: Join a cohort of talented interns across teams and disciplines
• Learning Opportunities: Technical workshops, speaker series, and skill-building sessions
• Career Development: Gain insights into several engineering career paths at Block
• Inclusive Culture: Experience our commitment to building a diverse and equitable workplace

We're working to build a more inclusive economy where our customers have equal access to opportunity, and we strive to live by these same values in building our workplace. Block is an equal opportunity employer evaluating all employees and job applicants without regard to identity or any legally protected class. We also consider qualified applicants with criminal histories for employment on our team, and always assess candidates on an individualized basis.
We believe in being fair, and are committed to an inclusive interview experience, including providing reasonable accommodations throughout the recruitment process. If you require an accommodation, let your recruiter know.
Want to learn more about what we're doing to build an inclusive workplace? Check out our Inclusion & Diversity page .
Use of AI in Our Hiring Process
We may use automated AI tools to evaluate job applications for efficiency and consistency. These tools comply with local regulations, including bias audits, and we handle all personal data in accordance with state and local privacy laws.
Contact us at [email protected] with hiring practice or data usage questions.
Every benefit we offer is designed with one goal: empowering you to do the best work of your career while building the life you want. Remote work, medical insurance, flexible time off, retirement savings plans, and modern family planning are just some of our offering. Check out our other benefits at Block.
Block, Inc. (NYSE: XYZ) builds technology to increase access to the global economy. Each of our brands unlocks different aspects of the economy for more people. Square makes commerce and financial services accessible to sellers. Cash App is the easy way to spend, send, and store money. Afterpay is transforming the way customers manage their spending over time. TIDAL is a music platform that empowers artists to thrive as entrepreneurs. Bitkey is a simple self-custody wallet built for bitcoin. Proto is a suite of bitcoin mining products and services. Together, we're helping build a financial system that is open to everyone.