Remote Senior Fullstack Engineer Job in UK Customer.io

Who you are

• 7+ years of experience in full-stack development
• Professional experience with TypeScript
• Advanced knowledge of JavaScript, CSS, and HTML
• Experience in modern JavaScript frameworks (Ember.js or React preferred)
• Proficiency in backend technologies, ideally with Go or another strongly-typed language such as Java, Kotlin, or TypeScript
• Experience designing and maintaining scalable APIs and services with relational (PostgreSQL or MySQL) or NoSQL databases
• Deep experience working in AWS, GCP, or Azure, or tools like Docker and Kubernetes
• Building high-quality, testable code using unit, integration, and end-to-end testing
• Experience in CI/CD pipelines, infrastructure automation, and monitoring production systems
• Strong written and verbal communication skills
• Problem-solving expertise
• A DevOps approach to development
• Ability to influence product direction and contribute technical insights

Desirables

• Cloud-native mindset
• Experience in distributed team environments

What the job involves

• Work on challenging problems, building scalable, robust services and user interfaces that drive the future of customer engagement technology.
• Blend expertise across both backend and frontend systems to directly impact the experience of customers, helping shape the features and infrastructure for the product to flourish.
• Design and develop high-performance, scalable services in Go and user interfaces in JavaScript, driving critical workflows that empower businesses to engage with their customers.
• Collaborate cross-functionally with partners across Product, Design, and Engineering to shape and implement features that enhance our platform and deliver seamless, intuitive experiences for users.
• Own the entire development lifecycle, from technical design through implementation and deployment, ensuring reliability, maintainability, and performance at scale.
• Mentor your peers and contribute to a culture of shared knowledge, continuous learning, and technical excellence.
• Identify high-impact opportunities to improve backend services and frontend interfaces, turning complex challenges into elegant, user-friendly solutions.
• Influence product direction through technical insights, collaborating with others to prioritize features that matter most.

Application process

• 30 minute video call with a Recruiter
• 60 minute Technical Interview
• Take Home Assignment plus 60 minute Assignment Review Call
• Final Interview with Hiring Manager