Developer Success Engineer

About Sent

Sent is an infrastructure for sending A2P messages across SMS, WhatsApp, and RCS through a single unified API. Our intelligent routing model automates channel selection based on deliverability and cost, ensuring lower cost and global reach without any channel-specific integrations.

We recently closed a $5.1M Seed round backed by Companyon Ventures, Bessemer Venture Partners, UIF, and CEAS Investments. We're hiring to build the best infrastructure to replace multi-channel messaging stacks.

About the Role

As a Developer Success engineer at Sent, you'll work alongside our customer-facing team to help developers integrate and get the most out of our messaging platform. You'll learn the ins and outs of SMS, WhatsApp, and RCS while supporting customers through onboarding, troubleshooting, and day-to-day technical questions.

This is a post-sales, technical role. You're not selling - you're helping developers and their teams succeed. That means getting comfortable reading customer code, learning how messaging delivery works under the hood, and becoming someone customers can rely on when they need help. You'll ramp up quickly with direct mentorship and hands-on exposure to real integration work from day one.

Ideal for someone early in their career who's technically curious, loves problem-solving, and wants to build deep expertise at the intersection of engineering and customer experience.

What You'll Do

Onboarding & Integration Support

Help guide new customers through API integration, from sandbox to production

Review customer integration code and flag issues, escalating to senior team members as needed

Assist in creating and maintaining onboarding playbooks for common use cases (transactional, marketing, auth)

Technical Support & Troubleshooting

Serve as a frontline technical point of contact for post-sale customers

Learn to debug delivery issues across channels - carrier filtering, template rejections, routing failures

Triage and escalate product bugs with clear reproduction steps for engineering

Customer Health & Expansion

Monitor customer usage patterns and flag potential issues or optimization opportunities

Support customers as they expand into new channels and use cases

Collect and organize customer feedback and feature requests for the product team

Knowledge & Enablement

Contribute to developer documentation, guides, and troubleshooting resources

Build internal scripts or lightweight tools to improve support efficiency

Share learnings across the team to improve onboarding and product

What You'll Bring

Required

0–1 years of experience in a technical, operations, or customer-facing role

Exposure to a high-growth or startup environment (operations, engineering, post-sales, BizOps, or similar)

Can read and write code, comfortable in at least one of: Python, JavaScript/TypeScript, or similar

Familiarity with REST APIs and basic debugging concepts (you don't need to be an expert - you need to be eager to learn)

Strong communication skills - can explain technical concepts clearly, not afraid to ask questions

Patient, detail-oriented approach to troubleshooting

Comfortable context-switching across multiple customer conversations

Nice to Have

Coursework, projects, or internship experience involving APIs, integrations, or backend systems

Previous experience at a developer tools or API-first company

Background in CS, engineering, or technical writing

What Makes This Role Special

Learn Fast: Get hands-on with SMS, WhatsApp, and RCS - not just one channel. Every customer's setup is different, so you'll build broad technical depth quickly.

Customer Impact: You're part of the reason developers have a great experience with Sent. Retention starts with your work.

Product Influence: Your customer insights directly shape what gets built. Engineering listens because you have the context.

Growth Path: Scale into solutions engineering, customer engineering, or technical leadership as you and the team grow.

Our Commitment to You

Meaningful Equity: Competitive ownership stake with high growth potential

Premium Benefits: Top-tier health, dental, and vision insurance fully covered

401(k) Match: We invest in your future - 100% match up to 4%

Unlimited PTO: We trust you to manage your time and recharge when needed

Growth Budget: Annual allowance for courses, conferences, and learning resources

NYC Office: Beautiful workspace with daily meals and unlimited snacks

Equipment: Brand New MacBook Pro and Apple Studio Display

Fitness Stipend: Comped Wellhub Gold Subscription or Equinox Membership

Sent, Inc. is an Equal Opportunity Employer committed to building a diverse and inclusive team. We encourage applications from candidates of all backgrounds and experiences.