Customer.io is hiring a Staff Software Engineer (Product/AI) to own ambiguous, cross-team problems from framing through launch. The role emphasizes strong backend engineering, end-to-end technical leadership (architecture, performance, reliability), product judgment, regular hands-on use of AI, mentorship, observability, and participation in on-call rotation. Compensation listed: $200,000–$280,000 USD base plus 10% bonus target and equity.

Customer.io is hiring a Staff Software Engineer (Backend) to make high-level architectural decisions for distributed messaging systems written in Go. The role focuses on scalability, cost/reliability tradeoffs, observability, mentoring senior engineers, cross-squad technical leadership, participating in on-call rotation, and using AI agents for multi-file changes. Requires 10+ years experience with scalable distributed systems, production-focused design, cloud-native environments (AWS/GCP), and relational databases (MySQL). Compensation range: $200,000–$240,000 USD plus a 10% annual bonus target and equity (stock options).

Customer.io is hiring a Senior Developer Experience Engineer for the Integrations team to build and evolve cross-platform SDKs (Android, iOS, Node, Go), improve SDK delivery infrastructure (CI, testing, versioning, publishing), partner with product/design, participate in on-call rotation, and use AI agents/LLMs to assist multi-file code changes. Role is remote for the Americas and lists base salary range $150k–$200k USD.

Customer.io is hiring a Senior Software Engineer on the Platform team to design and operate large-scale, data-intensive backend systems in Go. The role focuses on distributed systems architecture, reliability, observability, event-driven processing, databases (MySQL/Postgres, DynamoDB/BigTable), cloud-native environments (AWS/GCP), production debugging and participating in on-call rotation. Typical experience requested is 10+ years. Salary range: $150,000–$200,000 USD per year.

Customer.io seeks a Senior Software Engineer to build and scale frontend experiences (editors, analytics) and backend systems (queues, event pipelines, rate limiting) for the email channel. The role requires 7+ years building scalable distributed systems (Go or similar), frontend experience with React or similar, familiarity with cloud-native environments (AWS/GCP), MySQL, observability, and participation in an on-call rotation. Experience with email infrastructure is listed as nice-to-have.

Customer.io is hiring a Senior Software Engineer (Backend) to design, build, and operate distributed systems in Go that power large-scale messaging. Role responsibilities include architecture and schema design, testing, deployment, monitoring, participating in on-call rotation, and collaborating across teams. Required: 7+ years building scalable distributed systems, experience with cloud-native environments (AWS/GCP), familiarity with relational databases (MySQL), and observability/production operations. Role is remote across the Americas. Listed base salary range: $150,000–$200,000 USD.

Customer.io seeks a Senior Software Engineer (Product/AI) to design, build, and ship core product experiences. Role focuses on fullstack work (Go, React, Ember, TypeScript), APIs, relational databases, performance, testing, system reliability (on-call), and using AI agents for code changes. Compensation listed at $150,000–$250,000 USD/year. Americas-remote.

Customer.io is hiring a Senior Software Engineer (Product/AI) to build and ship core product experiences using Go, React, Ember, and AI-assisted tooling. The role requires 7+ years experience building and scaling backend services and product-facing features, fluency in TypeScript and a statically typed backend language (e.g., Go), and experience with APIs, relational databases, testing, and on-call responsibilities. Compensation range listed: $150,000–$250,000 USD per year.