Senior Software Engineer, Integrations
About Mashgin
Mashgin powers the world's best checkout experience for over 40 million users. Customers just place their items on our kiosks and our AI rings up their entire order in less than a second. With Mashgin, lines are now optional.
Mashgin's technology powers over 1 billion transactions at your favorite locations, including over half of all US professional sports teams, 4,000 convenience stores, major airports, universities, and more. We’re not just building cutting-edge AI—we’re creating real-world impact and unforgettable experiences.
Position Summary
We are looking for a highly technical Senior Software Engineer, Integrations to join us in building high and low level software to connect Mashgin's autonomous checkout kiosks to various convenience store backends. You will be responsible for integrating our hardware and software with customer environments, payment systems, point-of-sale solutions, and enterprise apps so our checkout feels seamless.
What We Value
Impact: You will own significant responsibility and have total ownership over your work. We stay lean and efficient, so your work directly impacts the product we ship every day
Simplicity: Complexity is a waste of time here—we take pride in building things that just work
Hard Work: Forget the glamorous research papers. We prioritize the hard work it takes to achieve real-world clarity and accuracy. You will innovate relentlessly to push the boundaries of what’s possible in visual automation
Ruthless Prioritization: If everything is on fire, nothing is. You will be expected to prioritize ruthlessly, cutting through distractions to focus on the most impactful product improvements
Customer Innovation: We are customer-centric, not customer-pleasing. You won’t bend to every client demand; you will let innovation drive the product forward to solve the real problems our users face
Efficiency: Meetings suck. We keep them short and only use them for alignment, giving you your time back to focus on real work
Engineering Robust Integrations
Building and maintaining integrations between Mashgin's checkout kiosks and customer payment, point-of-sale, and enterprise systems to enable reliable, scalable deployments.
Connecting Hardware & Software
Developing software that bridges embedded devices, payment terminals, peripherals, backend services, and customer APIs into a seamless end-to-end experience.
Solving Complex Customer Challenges
Working directly with internal teams and enterprise customers to understand integration requirements, troubleshoot production issues, and deliver elegant technical solutions.
Building Integration Infrastructure
Designing and implementing reusable libraries, tooling, and services that accelerate future customer integrations while improving reliability and observability.
Debugging Across the Stack
Diagnosing and resolving issues spanning firmware, networking, operating systems, payment devices, cloud services, and distributed applications.
Prototyping & Shipping
Rapidly building, testing, and deploying integration solutions, bringing new payment devices, peripherals, and customer systems into production with speed and confidence.
Minimum Qualifications
- 5+ years relevant coding experience
- B.S. or higher in Computer Science (or equivalent work experience)
- Excellent knowledge of one or more of these languages: Python, C++, TypeScript
- Comfortable learning new languages, libraries, and frameworks when the solution calls for it
- Experience building production-ready code that’s used regularly by lots of people
Preferred Qualifications
- Experience building software from firmware up to the application layer, especially for a public facing device
- Strong proficiency with Python, C, and C++
- Experience meeting with and demoing new features for customers