Principal Software Engineer (L5), AccSec

Twilio, Bengaluru, India

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See yourself at Twilio

Join the team as our next Principal Software Engineer

Who we are & why we’re hiring

Twilio powers real-time business communications and data solutions that help companies and developers worldwide build better applications and customer experiences.

Although we're headquartered in San Francisco, we're on a journey to becoming a globally antiracist company that supports diversity, equity & inclusion wherever we do business. We employ thousands of Twilions worldwide, and we're looking for more builders, creators, and visionaries to help fuel our growth momentum.

About the job

This position is needed to fulfill the critical role of a Principal Software Engineer to be a technical thought leader in creating and managing the Account Security product offerings from Twilio. The person in this role will be critical in shaping Twilio’s Account Security Product strategies. which will empower our customers to seamlessly integrate our product for providing secure account onboarding experience for their end users.


In this role, you’ll:

  • EMPOWER OTHERS: Collaborate with other team members, including our Product team, to help influence, own, and improve our product offering
  • DRAW THE OWL: Influence teams to continuously be improving while supporting progressive ways to solve problems; adopt new technologies and strategies where applicable.
  • BE BOLD: Drive architecture and building systems for multiple orders of magnitude of growth. Every big idea starts small: open up the boundaries and keep setting a higher standard as solving small problems can bring big results. Never settle and keep pushing yourself and the teams forward.
  • DON’T SETTLE:  Always look for the next opportunity for Twilio to improve our quality, reliability and security to continuously earn our customers trust.
  • BE AN OWNER: Support production operations, building, releasing and assisting with team on-call. Teams will be small and empowered so that you can move fast and ship to production multiple times in a 2 week sprint
  • WRITE IT DOWN: Evaluate opportunities, risk and technical strategies and provide key findings to internal stakeholders.


Not all applicants will have skills that match a job description exactly. Twilio values diverse experiences in other industries, and we encourage everyone who meets the required qualifications to apply. While having “desired” qualifications make for a strong candidate, we encourage applicants with alternative experiences to also apply. If your career is just starting or hasn't followed a traditional path, don't let that stop you from considering Twilio. We are always looking for people who will bring something new to the table!


  • 9+ years of work experience in designing high-performance, secure, multi-tenant cloud service.
  • Demonstrated ability designing and developing highly-available, high-scale, secure, critical native cloud enterprise SaaS applications in Java, Go or Python.
  • Knowledge of architectural patterns and archetypes for building mature services, especially for distributed and multi-regional deployments.
  • Excellent abilities in high level service design - modeling interfaces and internals in a proper modular, composable, and extensible ways.
  • Experience with AWS, GCP or other public cloud infrastructure platforms. Multi-region deployment is a plus.
  • Experience building distributed systems at scale based on microservices architecture.
  • Experience with container technologies - Docker/Kubernetes.
  • Extensive experience with REST API design and implementation.
  • Experience with UI technologies and Micro Frontend implementation - JavaScript, React, Angular.
  • Experience with SQL/NoSQL databases and caches.
  • Experience implementing modern automated testing and CI/CD pipelines. Develop, Test, Deploy your code.
  • Ability to translate architecture vision into concrete system designs.
  • Champion of good engineering habits: development and test techniques, security, tech debt reduction.
  • Strong belief in automation over toil.


  • Bachelor’s or Master’s degree in Computer Science or related industry experience
  • Excellent communication and interpersonal skills.
  • Familiar with Scrum and Agile methodologies
  • Strong expertise in solving complex production issues.


This role will be based in our Bangalore, India office. 

Approximately  < 10% travel is anticipated. 

What We Offer

There are many benefits to working at Twilio, including, in addition to competitive pay, things like generous time-off, ample parental and wellness leave, healthcare, a retirement savings program, and much more. Offerings vary by location.

Twilio thinks big. Do you?

We like to solve problems, take initiative, pitch in when needed, and are always up for trying new things. That's why we seek out colleagues who embody our values — something we call Twilio Magic. Additionally, we empower employees to build positive change in their communities by supporting their volunteering and donation efforts.

So, if you're ready to unleash your full potential, do your best work, and be the best version of yourself, apply now!

If this role isn't what you're looking for, please consider other open positions.

About Twilio

Twilio's mission is to fuel the future of communications. Developers and businesses use Twilio to make communications relevant and contextual by embedding messaging, voice, and video capabilities directly into their software applications. Founded in 2008, Twilio has over 800 employees, with headquarters in San Francisco and other offices in Bogotá, Dublin, Hong Kong, London, Madrid, Malmö, Mountain View, Munich, New York City, Singapore and Tallinn.

Want to learn more about Twilio? Visit Twilio's website.