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Staff Software Engineer

Twilio· Engineering
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Hybrid (Ireland)Full-timePosted 3mo ago

About the role

Staff Software Engineer role on the Voice Connectivity Trust team at Twilio. Responsible for end-to-end software delivery in a distributed production environment, owning services, collaborating with product and cross-functional teams, and applying agile practices to continuously deliver value.

Responsibilities

  • Be an owner: Design and implement real-time services with high throughput and low latency requirements, verify, deploy and operationalize them
  • Wear the customer's shoes: Work closely with stakeholders to understand customer needs and, devise and deliver, simple, robust and scalable solutions
  • Write it down: Be comfortable expressing thoughts and ideas as detailed prose and use it as an effective means to collaborate with leads, architects and cross functional teams
  • Be bold: Embrace the challenge of scaling a complex distributed platform with points of presence globally, each one concerned with high availability, high reliability, high throughput, low latency, and media fidelity
  • Draw the owl: Figure out novel ways of solving customer problems for the Voice channel

Qualifications

  • Minimum 8 years of hands-on experience in a large scale, distributed applications environment on JVM based technologies
  • Bachelor's degree in Computer Science or a related engineering field
  • Strong Computer Science fundamentals not limited to data structures, algorithms, operating systems, and distributed systems
  • Experience building RESTful services, API design and event-driven architectures (Kafka, SQS)
  • Hands-on experience designing and driving the optimization of CI/CD pipelines
  • Experience with on-call rotations, incident response, monitoring/alerting tools (Prometheus, Datadog, Grafana)
  • Hands-on experience with cloud infrastructures such as AWS, GCP, OpenStack or Azure
  • Excellent written communication skills - essential for effective AI prompting and for creating clear technical documentation
  • Proven ability to critically evaluate AI-generated code for correctness, security, performance, and maintainability
  • Hands-on Java experience with strong fundamentals, able to architect, review, and debug code whether it's yours, a teammate's, or an AI agent's
  • Demonstrated proficiency working with AI coding assistants (Claude, GitHub Copilot, Cursor, or similar) - you should be able to describe your workflows and show examples
  • Experience scaling data tiers employing a variety of SQL/NoSQL database and caching technologies
  • Hands on experience scaling production backend systems, with the proven ability to design and develop horizontally-scalable, resilient and performing-under-load systems
  • Strong team collaborator who is both highly motivated and a motivating influence on peers
  • Demonstrated technical leadership by driving architectural decisions, leading cross-functional technical initiatives, and actively mentoring team members

Skills

Required:JavaDistributed systemsRESTful servicesEvent-driven architecturesCI/CDCloud platformsMonitoring/alertingAI tooling

Benefits

  • Competitive pay
  • Generous time off
  • Parental and wellness leave
  • Healthcare
  • Retirement savings program
  • Offerings vary by location
Last updated Oct 1, 2026. Interested? Apply on the company site.

About Twilio

Twilio platform for communications and programmable APIs across messaging, voice, video, and AI-enabled workflows.

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