Software Engineer, Full Stack

You own problems end to end. You move fast, act like an owner, and thrive in ambiguity. You’ve led complex projects before, whether officially or not, and you’re ready to do it again.

Engineers with product taste

You think like a user, not just an engineer. You care about frontend polish, backend performance, and everything in between.

A healthy skepticism for “the way things are done”

You bring rigor and creativity. Best practices matter - but never more than forward motion.

What You’ll Do

• Build fullstack features in Go, React, and Ember that power key customer workflows
• Collaborate with others to turn ideas into shipped customer value
• Share knowledge and raise the bar through sharing your progress publicly with short videos, thoughtful writing, and mentorship
• Help evolve our systems to scale with more customers, messages, and use cases
• Use AI agents to make multi-file changes by scoping the work, writing the prompt, and verifying the output, * Hiring Manager Interview (60 mins) - Talk with one of our hiring managers about your working style and a project you’ve owned end-to-end, plus a short AI-assisted coding exercise.
• System Design Interview (60 mins) - Design a system end-to-end. We’re looking for how you think, communicate tradeoffs, and drive through ambiguity.
• Take-Home Assignment - Complete a short, realistic task similar to what you’d work on here.
• Assignment Review Calls (2 x 60 mins) - Walk us through your work and discuss tradeoffs, priorities, and how you’d iterate.

All final candidates will be asked to complete a background check and employment verifications as part of our pre-employment process.

Customer.io recognizes the stifling impact of systemic injustice on diverse communities. We commit to using our influence to increase inclusion and equity within the tech industry. We strive to build an inclusive team culture, implement bias-free hiring practices, and develop community partnerships to expand our global impact., This should be the location you plan to consider your primary residence and are legally authorized to work in. Were you referred to this position by a current or former team member? If so, please list their name below.*

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As a remote company, we hire across many locations, but we do have policies and team needs that influence where we can support employment. Because of this, we’re not able to offer visa sponsorship or relocation support at this time.

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For government reporting purposes, we ask candidates to respond to the below self-identification survey. Completion of the form is entirely voluntary. Whatever your decision, it will not be considered in the hiring process or thereafter. Any information that you do provide will be recorded and maintained in a confidential file.

As set forth in Customer.io’s Equal Employment Opportunity policy, we do not discriminate on the basis of any protected group status under any applicable law. Gender Select… Are you Hispanic/Latino? Select… Race & Ethnicity Definitions

If you believe you belong to any of the categories of protected veterans listed below, please indicate by making the appropriate selection. As a government contractor subject to the Vietnam Era Veterans Readjustment Assistance Act (VEVRAA), we request this information in order to measure the effectiveness of the outreach and positive recruitment efforts we undertake pursuant to VEVRAA. Classification of protected categories is as follows:

A “disabled veteran” is one of the following: a veteran of the U.S. military, ground, naval or air service who is entitled to compensation (or who but for the receipt of military retired pay would be entitled to compensation) under laws administered by the Secretary of Veterans Affairs; or a person who was discharged or released from active duty because of a service-connected disability.

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• 7+ years of experience building and scaling backend services and product-facing features
• Fluency in TypeScript, React (or similar), and a statically typed backend language like Go
• A strong care for frontend polish, backend performance, and the overall customer experience
• Proficiency with APIs, relational databases, and writing testable, performant code
• A bias for action over perfection, and pride in owning technical decisions

We believe in transparency. Starting salary for this role is $150,000 - $200,000 USD (or equivalent in local currency) depending on experience and subject to market rate adjustment.

We know our people are what make us great, and we’re committed to taking great care of them. Our inclusive benefits package supports your well-being and growth, including 100% coverage of medical, dental, vision, mental health, and supplemental insurance premiums for you and your family. We also offer 16 weeks paid parental leave, unlimited PTO, stipends for remote work and wellness, a professional development budget, and more.