Full Stack Engineer - Trust and Safety
####****你有什么好处？** 准备做出重大影响？数百万人已经依赖 Calendly,我们仍然在令人兴奋的产品增长中。这是一个伟大的时间加入我们。你在这里工作的一切将加速你的职业生涯到下一层面。如果你想学习，成长和与你一起生活中的最好的工作，那么我们希望你会考虑让 Calendly 成为你的专业旅程的一部分。**关于团队 &机会** 数百万的人使用 Calendly 预订会议，其中大部分都发生在公共预订页面上，任何有链接的人可以安排时间。这种开放性使得 Calendly 易于使用，也是它成为目标的原因。**信任和安全**团队保持 Calendly 的安全性而不让任何人减缓速度。我们保护所有与 Calendly 互动的人：分享他们的链接的主机，邀请者与他们订阅，以及电子邮件和短信提供商和合作伙伴依赖于我们的责任发送。我们的工作涵盖了三个领域：防止和应对滥用行为，保护 Calendly 所发送信息的可交付能力和合规性，并随着平台增长而保持消息成本预测性。我们的大部分问题都是相互矛盾的。我们经常不能依赖于知道某人是谁，所以我们会判断行为，模式和内容。攻击者总是改变策略，因此我们构建的信号从一个攻击到另一个攻击。而且我们认真对待虚假积极信息，因为阻止真正的客户比让垃圾邮件流入更贵。工程师与我们的信任安全运营团队密切合作，他们首先看到滥用并塑造了我们所构建的东西。在这个角色中，你将报告给信任安全团队的工程经理。**卡伦德利全堆工程师的一天** - 建立和改善在注册，预订和消息传递中检测和阻止滥用系统，如垃圾邮件，鱼，机器人以及欺诈性 SMS 流量。-提高 Calendly 发送的电子邮件和 SMS 通知的可靠性，交付能力和合规性。- 密切运输新发现：在账户上行动之前测量其实际流量表现如何，并对假负面结果进行权衡。- 通过快速停止损害，然后将快速修复替换为持久的工具来应对包括在通话期间在内的积极滥用行为。- 构建帮助我们的信任与安全操作的工具。
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##### **What’s in it for you?**
Ready to make a serious impact? Millions of people already rely on Calendly, and we’re still in the midst of exciting product growth — it’s a fantastic time to join us. Everything you’ll work on here will accelerate your career to the next level. If you want to learn, grow, and do the best work of your life alongside the best people you’ve ever worked with, then we hope you’ll consider allowing Calendly to be a part of your professional journey.
**About the team & opportunity**
Millions of people use Calendly to book meetings, and most of that happens on public booking pages where anyone with a link can schedule time. That openness is what makes Calendly easy to use, and it’s also what makes it a target. The **Trust & Safety** team keeps Calendly safe without slowing anyone down.
We protect everyone who interacts with Calendly: the hosts who share their links, the invitees who book with them, and the email and SMS providers and partners who rely on us to send responsibly. Our work covers three areas: preventing and responding to abuse, protecting the deliverability and compliance of the messages Calendly sends, and keeping messaging costs predictable as the platform grows.
Most of our problems are adversarial. We often can’t rely on knowing who someone is, so we judge behavior, patterns, and content instead. Attackers change tactics all the time, so we build signals that last from one attack to the next. And we take false positives seriously, because blocking a real customer costs more than letting a spammer through. Engineers work closely with our Trust & Safety Operations team, who see abuse first and shape what we build.
In this role, you will report to the Engineering Manager for the Trust & Safety team.
**A day in the life of a Full Stack Engineer at Calendly**
On a typical day, you will be working on:
- Building and improving the systems that detect and stop abuse across sign-up, booking, and messaging, such as spam, phishing, bots, and fraudulent SMS traffic.
- Improving the reliability, deliverability, and compliance of the email and SMS notifications Calendly sends.
- Shipping new detection carefully: measuring how it performs on real traffic before it acts on accounts, and weighing false positives against false negatives.
- Responding to active abuse, including during on-call, by stopping the damage fast, then replacing quick fixes with durable ones.
- Building tools that help our Trust & Safety Operations team review accounts faster and understand why the system took each action.
- Partnering with Product, Operations, and Data to define requirements and measure the impact of what we ship.
- Working with other product teams to add protections to the flows they own.
- Reviewing implementation plans and pull requests, and sharing what you learn with the team.
**What do we need from you?**
- 3+ years of professional software development experience at a SaaS or technology company, including building and running production systems.
- Strong backend skills: building services, APIs, and data-heavy workflows in a service-oriented architecture.
- Experience with Rails, Node/TypeScript, Go, or a comparable language or framework, and a willingness to work across more than one.
- Comfort with relational databases and SQL, and with using data to check whether a change actually worked.
- An analytical, curious mindset: you think about how a system could be misused, not only how it’s supposed to be used.
- Good judgment about trade-offs, such as stopping bad actors without adding friction for real customers.
- A commitment to clean, reliable, maintainable code, thoughtful testing, and shipping in small increments.
- Clear communication with engineers and non-engineers alike, including Operations and Support partners.
- Comfort and skill with AI tools in your engineering work, including reviewing their output critically.
- Availability to take part in an on-call rotation for critical services.
- Authorized to work lawfully in the United States of America as Calendly does not engage in immigration sponsorship at this time.
**Nice to have**
- Experience in trust and safety, fraud, spam, or abuse prevention.
- Experience with email or SMS delivery, such as deliverability, sender reputation, or messaging compliance.
- Experience with bot protection, rate limiting, or third-party risk and verification services.
- Experience building rules engines, risk scoring, or ML-backed decisions in production.
- Experience using LLMs to classify or moderate user-generated content.
- Experience with GCP, Kubernetes, PostgreSQL, or Redis.
Tier 1 Salary Hiring Range
$187,680—$227,424 USD
Tier 2 Salary Hiring Range
$172,040—$208,472 USD
Tier 3 Salary Hiring Range
$156,400—$189,520 USD
The ranges listed above 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 equity awards, and competitive benefits. Eligible Sales employees also qualify for a Sales Incentive program.
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
**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 let your Recruiter know when first connecting with them. Calendly is registered as an employer in many, but not all, states. If you are located in Alaska, Delaware, Hawaii, Idaho, Iowa, Montana, Nebraska, North Dakota, Rhode Island, South Dakota, and West Virginia, 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](https://docs.google.com/document/d/1UarTnO5b7rIEKowqiyRvw1Zz81mROP7tq-NR7sCmhBM/edit)**
**Candidates residing in California may visit our Notice at Collection for California Candidates here: [Notice at Collection](https://docs.google.com/document/d/1d58_uJ1S0ti5jMlekLhXRswLfJAdw0A6/edit#bookmark=id.gjdgxs)**
This role may require occasional travel for company events, team collaboration, or offsites.