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Backend Engineer, AI Platform, Remote Job

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About the team & opportunity 

We are seeking a Backend Engineer to help design and build our next-generation AI Platform. As a key member of our Engineering team, you will drive the development of highly scalable, reliable, and performant backend systems that power AI services for end users and product teams. You will collaborate closely with ML engineers, product managers, and other cross functional partners to architect tools and services that accelerate our AI capabilities.

A day in the life of a Backend Engineer at Calendly

On a typical day, you will:

  • Architect, implement, and maintain backend services and APIs for AI-driven products and features.

  • Build scalable infrastructure to support large-scale training, deployment, and monitoring of machine learning models.

  • Integrate third-party AI/ML solutions where appropriate and optimize system performance.

  • Implement security, compliance, and data privacy best practices for AI workflows.

  • Collaborate cross-functionally with ML engineers and data scientists to enable seamless model deployment and management.

  • Develop testing frameworks and monitoring tools to ensure system reliability and observability.

  • Participate in technical design reviews and provide input on best practices and emerging technologies.

  • Debug production issues across services and multiple levels of the stack

What do we need from you?

  • Professional experience (typically 5+ years) as a backend engineer or in a similar software engineering role, ideally supporting data or ML systems.

  • Hands-on experience building distributed systems, GraphQL and RESTful APIs, and/or microservices architectures.

  • Strong proficiency in at least one backend programming language (such as Python, Go, Java, or Scala).

  • Experience with cloud platforms (AWS, GCP, or Azure) and containerization technologies (Docker, Kubernetes).

  • Familiarity with storage solutions relevant for AI (e.g., PostgreSQL, MongoDB, Redis, object storage, data lakes).

  • Knowledge of security, privacy, and compliance principles in distributed/cloud environments.

  • Comfortable with CI/CD pipelines, version control systems (Git), and infrastructure-as-code.

What’s in it for you? 

This role provides a unique opportunity to shape foundational services that power the next generation of AI-enabled solutions. If you thrive in a fast-paced team and are excited by solving complex technical problems in the AI space, we want to hear from you!

If you are an individual with a disability and would like to request a reasonable accommodation as part of the application or recruiting process, please contact us at recruiting@calendly.com . 

Calendly is registered as an employer in many, but not all, states. If you are located in Alaska, Alabama, Delaware, Hawaii, Idaho, Montana, North Dakota, South Dakota, Nebraska, Iowa, West Virginia, and Rhode Island, you will not be eligible for employment. Note that all individual roles will specify location eligibility.

All candidates can find our Candidate Privacy Statement here

Candidates residing in California may visit our Notice at Collection for California Candidates here: Notice at Collection

The ranges listed below are the expected annual base salary for this role, subject to change.

Calendly takes a number of factors into consideration when determining an employee’s starting salary, including relevant experience, relevant skills sets, interview performance, location/metropolitan area, and internal pay equity.

Base salary is just one component of Calendly’s total rewards package. All full-time (30 hours/week) employees are also eligible for our Quarterly Corporate Bonus program (or Sales incentive), equity awards, and competitive benefits.

Calendly uses the zip code of an employee’s remote work location, or the onsite building location if hybrid, to determine which metropolitan pay range we use. Current geographic zones are as follows:

  • Tier 1: San Francisco, CA, San Jose, CA, New York City, NY

  • Tier 2: Chicago, IL, Austin, TX, Denver, CO, Boston, MA, Washington D.C., Philadelphia, PA, Portland, OR, Seattle, WA, Miami, FL, and all other cities in CA.

  • Tier 3: All other locations not in Tier 1 or Tier 2

Tier 1 Salary

$148,800 - $223,200 USD

Tier 2 Salary

$136,400 - $204,600 USD

Tier 3 Salary

$124,000 - $186,000 USD

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Common Interview Questions And Answers

1. HOW DO YOU PLAN YOUR DAY?

This is what this question poses: When do you focus and start working seriously? What are the hours you work optimally? Are you a night owl? A morning bird? Remote teams can be made up of people working on different shifts and around the world, so you won't necessarily be stuck in the 9-5 schedule if it's not for you...

2. HOW DO YOU USE THE DIFFERENT COMMUNICATION TOOLS IN DIFFERENT SITUATIONS?

When you're working on a remote team, there's no way to chat in the hallway between meetings or catch up on the latest project during an office carpool. Therefore, virtual communication will be absolutely essential to get your work done...

3. WHAT IS "WORKING REMOTE" REALLY FOR YOU?

Many people want to work remotely because of the flexibility it allows. You can work anywhere and at any time of the day...

4. WHAT DO YOU NEED IN YOUR PHYSICAL WORKSPACE TO SUCCEED IN YOUR WORK?

With this question, companies are looking to see what equipment they may need to provide you with and to verify how aware you are of what remote working could mean for you physically and logistically...

5. HOW DO YOU PROCESS INFORMATION?

Several years ago, I was working in a team to plan a big event. My supervisor made us all work as a team before the big day. One of our activities has been to find out how each of us processes information...

6. HOW DO YOU MANAGE THE CALENDAR AND THE PROGRAM? WHICH APPLICATIONS / SYSTEM DO YOU USE?

Or you may receive even more specific questions, such as: What's on your calendar? Do you plan blocks of time to do certain types of work? Do you have an open calendar that everyone can see?...

7. HOW DO YOU ORGANIZE FILES, LINKS, AND TABS ON YOUR COMPUTER?

Just like your schedule, how you track files and other information is very important. After all, everything is digital!...

8. HOW TO PRIORITIZE WORK?

The day I watched Marie Forleo's film separating the important from the urgent, my life changed. Not all remote jobs start fast, but most of them are...

9. HOW DO YOU PREPARE FOR A MEETING AND PREPARE A MEETING? WHAT DO YOU SEE HAPPENING DURING THE MEETING?

Just as communication is essential when working remotely, so is organization. Because you won't have those opportunities in the elevator or a casual conversation in the lunchroom, you should take advantage of the little time you have in a video or phone conference...

10. HOW DO YOU USE TECHNOLOGY ON A DAILY BASIS, IN YOUR WORK AND FOR YOUR PLEASURE?

This is a great question because it shows your comfort level with technology, which is very important for a remote worker because you will be working with technology over time...

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