Customer.io logo
Customer.io

Email, push notifications, text messages, in-app messages, webhooks: automated and powered by your data.

Senior Software Engineer, Full Stack

Full-stack EngineerSoftware EngineerFull TimeRemoteSeniorTeam 51-200Since 2012H1B No SponsorCompany SiteLinkedIn

Location

Mexico

Posted

74 days ago

Salary

$150K - $200K / year

Seniority

Senior

Job Description

Senior Software Engineer, Full Stack

Customer.io

Hi, I’m Paul, VP of Engineering at Customer.io. We’re looking for curious, driven Fullstack (Product) Engineers who want to own big things and delight our customers. You’ll design, build, and ship the core product experiences our customers rely on - while helping the team push boundaries on what great communication tools can do. About Customer.io Over 8,000 companies - from scrappy startups to global brands - use our platform to send billions of emails, push notifications, in-app messages, and SMS every day. Customer.io powers automated communication that people actually want to receive. We help teams send smarter, more relevant messages using real-time behavioral data. Under the hood: Go, React, Ember and AI help us ship fast and scale with confidence. What We Value Ownership 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 What we're looking for - 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 Compensation & Benefits 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. See full benefits here → Our Process No gotchas, no trick questions - just a clear, human process designed to help both of us make an informed decision. - Application - We review everyone with care. Tell us why you're interested. - Recruiter Call (30 mins) - Let’s chat about what you’re looking for and how we work. - Behavioral Interview (60 mins) - Talk with one of our hiring managers. We’ll explore topics like ownership, product thinking, and collaboration. - 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. Zoom is the only video conference platform that we use, virtual interviews will be conducted using the video capability (i.e., not via the chat), and offers will be extended in writing on official Customer.io letterhead. Please be vigilant in all of your job search activity, and if you have any questions please contact jobs@customer.io. Join us! We believe in empathy, transparency, responsibility, and, yes, a little awkwardness. If you’re excited by what you read and want to build software that makes communication better for everyone—apply now.

Related Job Pages

More Full-stack Engineer Jobs

Senior Full Stack Developer

Pavago

Pavago specializes in connecting businesses with top-tier offshore talent in operations, sales, and marketing, offering a comprehensive recruitment solution designed to reduce cost

Job Title: Senior Full Stack Developer Position Type: Full-Time, Remote Working Hours: U.S. client business hours (with flexibility for sprint cycles, deployments, and urgent fixes) About the Role: Our client is seeking a Senior Full Stack Developer to design, develop, and maintain scalable web applications from front-end interfaces through back-end services and databases. This role is hands-on with code while also providing architectural guidance and mentoring junior developers. The Senior Full Stack Developer ensures products are fast, reliable, user-friendly, and maintainable while supporting growth and innovation. Responsibilities: Front-End Development: - Build modern, responsive UIs using React, Angular, or Vue. - Implement state management (Redux, Vuex, or Context API). - Ensure accessibility and cross-browser/device compatibility. Back-End Development: - Develop APIs and business logic in Node.js, Python (Django/Flask/FastAPI), or Java/Spring. - Design RESTful or GraphQL endpoints for client consumption. - Manage server-side rendering and optimize for performance. Database & Data Layer: - Design schemas and manage relational (Postgres, MySQL) and NoSQL (MongoDB, DynamoDB) databases. - Write optimized queries and manage migrations. - Implement caching strategies (Redis, Memcached). Testing & Code Quality: - Write unit, integration, and end-to-end tests using Jest, Mocha, Cypress, or PyTest. - Maintain high code coverage (≥80%) and follow style/linting rules. - Perform regular peer code reviews. Collaboration & Agile: - Work with product managers and designers to refine user stories into technical requirements. - Participate in sprint ceremonies (planning, standups, retrospectives). - Provide accurate effort estimates and technical feedback. DevOps & Deployment (Lightweight): - Use Git, GitHub/GitLab for version control and pull requests. - Deploy applications using CI/CD pipelines (GitHub Actions, GitLab CI, Jenkins). - Manage cloud deployments on AWS, Azure, or GCP for applications (Elastic Beanstalk, App Engine, Lambda/serverless functions). Mentorship & Leadership: - Mentor junior and mid-level developers through code reviews and pair programming. - Contribute to long-term technical roadmap discussions. - Help enforce engineering best practices across the team. What Makes You a Perfect Fit: - Hands-on coder who thrives building features end-to-end. - Strong communicator who can collaborate with product and design teams. - Experienced balancing fast iteration with maintainable architecture. - Proactive mentor who raises the skill level of the team. Required Experience & Skills (Minimum): - 5+ years full stack development. - Proficiency with JavaScript/TypeScript (React, Angular, Vue + Node.js). - Experience with at least one relational and one NoSQL database. - Familiarity with Git workflows and CI/CD. Ideal Experience & Skills: - SaaS, e-commerce, or enterprise web application development. - Experience with microservices and serverless architectures. - Exposure to infrastructure-as-code or lightweight DevOps (Terraform, Docker). - Industry background in fast-paced product environments. What Does a Typical Day Look Like? A Senior Full Stack Developer’s day revolves around shipping features while maintaining performance and reliability. You will: - Start with standup, reviewing sprint goals and prioritizing tickets. - Develop new features across front-end and back-end, from UI components to APIs. - Review and merge code, providing mentorship through constructive feedback. - Debug and optimize applications, resolving bugs or scaling bottlenecks. - Collaborate with designers and product managers to refine UX and feature requirements. - Deploy updates through CI/CD pipelines and monitor performance in production. - Document technical changes for future maintainability and onboarding. In essence: you are both a hands-on builder and technical leader, ensuring applications are robust, scalable, and continuously improving. Key Metrics for Success (KPIs): - Features shipped on time and aligned with requirements. - Application uptime ≥ 99.9% with minimal performance issues. - Code coverage maintained ≥ 80%. - Reduced technical debt (tracked through code reviews/refactoring). - Positive feedback from peers and product stakeholders. Interview Process: - Initial Phone Screen - Video Interview with Pavago Recruiter - Technical Assessment (e.g., build a small feature end-to-end with API + UI + test coverage) - Client Interview with Engineering/Product Team - Offer & Background Verification

Mexico
Job Closed

Senior Full Stack Developer

Pavago

Pavago specializes in connecting businesses with top-tier offshore talent in operations, sales, and marketing, offering a comprehensive recruitment solution designed to reduce cost

Job Title: Senior Full Stack Developer Position Type: Full-Time, Remote Working Hours: U.S. client business hours (with flexibility for sprint cycles, deployments, and urgent fixes) About the Role: Our client is seeking a Senior Full Stack Developer to design, develop, and maintain scalable web applications from front-end interfaces through back-end services and databases. This role is hands-on with code while also providing architectural guidance and mentoring junior developers. The Senior Full Stack Developer ensures products are fast, reliable, user-friendly, and maintainable while supporting growth and innovation. Responsibilities: Front-End Development: - Build modern, responsive UIs using React, Angular, or Vue. - Implement state management (Redux, Vuex, or Context API). - Ensure accessibility and cross-browser/device compatibility. Back-End Development: - Develop APIs and business logic in Node.js, Python (Django/Flask/FastAPI), or Java/Spring. - Design RESTful or GraphQL endpoints for client consumption. - Manage server-side rendering and optimize for performance. Database & Data Layer: - Design schemas and manage relational (Postgres, MySQL) and NoSQL (MongoDB, DynamoDB) databases. - Write optimized queries and manage migrations. - Implement caching strategies (Redis, Memcached). Testing & Code Quality: - Write unit, integration, and end-to-end tests using Jest, Mocha, Cypress, or PyTest. - Maintain high code coverage (≥80%) and follow style/linting rules. - Perform regular peer code reviews. Collaboration & Agile: - Work with product managers and designers to refine user stories into technical requirements. - Participate in sprint ceremonies (planning, standups, retrospectives). - Provide accurate effort estimates and technical feedback. DevOps & Deployment (Lightweight): - Use Git, GitHub/GitLab for version control and pull requests. - Deploy applications using CI/CD pipelines (GitHub Actions, GitLab CI, Jenkins). - Manage cloud deployments on AWS, Azure, or GCP for applications (Elastic Beanstalk, App Engine, Lambda/serverless functions). Mentorship & Leadership: - Mentor junior and mid-level developers through code reviews and pair programming. - Contribute to long-term technical roadmap discussions. - Help enforce engineering best practices across the team. What Makes You a Perfect Fit: - Hands-on coder who thrives building features end-to-end. - Strong communicator who can collaborate with product and design teams. - Experienced balancing fast iteration with maintainable architecture. - Proactive mentor who raises the skill level of the team. Required Experience & Skills (Minimum): - 5+ years full stack development. - Proficiency with JavaScript/TypeScript (React, Angular, Vue + Node.js). - Experience with at least one relational and one NoSQL database. - Familiarity with Git workflows and CI/CD. Ideal Experience & Skills: - SaaS, e-commerce, or enterprise web application development. - Experience with microservices and serverless architectures. - Exposure to infrastructure-as-code or lightweight DevOps (Terraform, Docker). - Industry background in fast-paced product environments. What Does a Typical Day Look Like? A Senior Full Stack Developer’s day revolves around shipping features while maintaining performance and reliability. You will: - Start with standup, reviewing sprint goals and prioritizing tickets. - Develop new features across front-end and back-end, from UI components to APIs. - Review and merge code, providing mentorship through constructive feedback. - Debug and optimize applications, resolving bugs or scaling bottlenecks. - Collaborate with designers and product managers to refine UX and feature requirements. - Deploy updates through CI/CD pipelines and monitor performance in production. - Document technical changes for future maintainability and onboarding. In essence: you are both a hands-on builder and technical leader, ensuring applications are robust, scalable, and continuously improving. Key Metrics for Success (KPIs): - Features shipped on time and aligned with requirements. - Application uptime ≥ 99.9% with minimal performance issues. - Code coverage maintained ≥ 80%. - Reduced technical debt (tracked through code reviews/refactoring). - Positive feedback from peers and product stakeholders. Interview Process: - Initial Phone Screen - Video Interview with Pavago Recruiter - Technical Assessment (e.g., build a small feature end-to-end with API + UI + test coverage) - Client Interview with Engineering/Product Team - Offer & Background Verification

Brazil
Job Closed
ContractRemoteTeam 1-10Since 2008H1B No Sponsor

• Technical Leadership: Serve as the technical point of reference for the squad and broader engineering team, ensuring best practices in architecture, performance optimization, and accessibility standards are upheld. • Solution Design: Lead the design and architectural discussions for systems, making pivotal decisions on frameworks, state management patterns, component architecture, and design systems. • Code Quality: Advocate for and ensure the delivery of high-quality, maintainable, and scalable code. Conduct regular code reviews and provide mentorship to team members. • Collaboration: Work closely with product managers, designers, and other stakeholders to understand requirements, provide technical insights, and ensure the timely delivery of features. • Strategy and Vision: Contribute to the engineering department's strategy and vision, bringing innovative ideas to improve our customer-facing experiences. • Problem Solving: Address complex technical challenges, innovate solutions, and optimize existing systems for scalability and performance. • Team Development: Mentor and develop team members, helping them to grow in their technical roles and careers. • AI Enablement: Leverage AI-native tools and approaches to improve development speed, product capabilities, and engineering effectiveness across the software lifecycle.

Costa Rica
ContractRemoteTeam 1-10Since 2008H1B No Sponsor

• Technical Leadership: Serve as the technical point of reference for the squad and broader engineering team, ensuring best practices in architecture, performance optimization, and accessibility standards are upheld. • Solution Design: Lead the design and architectural discussions for systems, making pivotal decisions on frameworks, state management patterns, component architecture, and design systems. • Code Quality: Advocate for and ensure the delivery of high-quality, maintainable, and scalable code. Conduct regular code reviews and provide mentorship to team members. • Collaboration: Work closely with product managers, designers, and other stakeholders to understand requirements, provide technical insights, and ensure the timely delivery of features. • Strategy and Vision: Contribute to the engineering department's strategy and vision, bringing innovative ideas to improve our customer-facing experiences. • Problem Solving: Address complex technical challenges, innovate solutions, and optimize existing systems for scalability and performance. • Team Development: Mentor and develop team members, helping them to grow in their technical roles and careers. • AI Enablement: Leverage AI-native tools and approaches to improve development speed, product capabilities, and engineering effectiveness across the software lifecycle.

Colombia