Software Engineering Tech Lead, Square Appointments

  • Denver, CO
  • Full-time

Company Description

When we launched the little white reader, we invented mobile, ubiquitous payments and enabled anyone to start, run, and grow a business. Ten years and billions of transactions later we’re reimagining commerce for businesses of all types and sizes—we’re enabling the independent electrician to send invoices, helping the beauty salon pay its employees, and giving the burgeoning coffee chain capital for a second, third, and fourth location. We’re working to find new and better ways to help businesses succeed on their own terms—and we’re looking for people like you to help shape tomorrow at Square.

Job Description

Square Appointments helps service professionals manage their calendar on the go. With Square’s online scheduling software, customers can always get access to their availability and confirm their appointments seamlessly online. Our software is the point of sale for the merchants and a tool for them to manage their time. As a Tech Lead on Appointments, you will build products, and services that are inspiring, meaningful and will fundamentally change the economy we know today. You will be responsible for technical architecture and design for our product, working closely with our product, design and engineering team.

This is a greenfield opportunity, we’re trying to build something new, and starting a team to tackle it. We’re building out a cohesive set of scheduling APIs and product features to help developers and merchants build ambitious products. Our product spans across mobile, web, payments and scheduling and you’ll need to work closely across all the domains. We’re looking for someone who is passionate about product, APIs, developer enablement and solving all the challenging engineering problems we’ll face building building scalable Appointments APIs. 

You'll join a small Square team in Denver, CO. Initially you will be asked to work from home or in co-working spaces (at our expense), and you’ll partner with supportive colleagues in San Francisco. There will be opportunities to travel to San Francisco to meet the wider team. It’s important to note that this is not a remote role. As we grow in Denver we expect to find a permanent office for the team to work together on larger projects, and you'll be a big part of growing our Denver presence.


What will you do here?

  • Build our Appointments platform that will be used by developers and internal teams.
  • Design fault tolerant systems so the team can be brave and move fast, without ever negatively affecting our customers.
  • Design data models to support our APIs and product features.
  • Build APIs used by apps and microservices.
  • Lead and participate in critical technical, design, and product discussions with leaders across the company.
  • Own the success of your team's projects throughout their life cycle, from inception to supporting production.
  • Take input from and work with our developer community on Square SDK projects and contribute to other projects as appropriate.
  • Coach and mentor the team, cultivating pragmatic engineering decision-making, and leveraging your technical expertise to grow the team.

You have:

  • Experience providing technical mentorship and guidance.
  • Strong self-motivation to learn and grow.
  • A passion for creating readable, well-crafted, maintainable code.
  • Eagerness to share your own ideas, and openness to those of others.
  • Effective written communication skills and the self-discipline to work effectively in a remote or distributed team.
  • BA/BS degree or equivalent practical experience.

Technologies we use and teach:

  1. Ruby, Rails, Java, MySQL and Elasticsearch
  2. Ember.js, ES6, Typescript
  3. Kotlin, Swift

Additional Information

At Square, our purpose is to empower – within and outside of our walls. In order to build the best tools for the businesses and customers we support all over the world, we have to start at home with a workforce as diverse and empowered as our sellers. To this end, we take great care to evaluate all employees and job applicants equally, based on merit, competence, and qualifications. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, disability status, or any other characteristic protected by law. We encourage candidates from all backgrounds to apply and always consider qualified applicants with arrest and conviction records, in accordance with the San Francisco Fair Chance Ordinance. Applicants in need of special assistance or accommodation during the interview process or in accessing our website may contact us by sending an email to assistance(at) We will treat your request as confidentially as possible. In your email, please include your name and preferred method of contact, and we will respond as soon as possible. Perks At Square, we want you to be well and thrive. Our global benefits package includes: Healthcare coverage, Retirement Plans, Employee Stock Purchase Program, Meal reimbursements, Wellness perks, Paid parental leave, Flexible time off, Learning and Development resources