Senior Software Engineer - Core Services

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 650 employees, with headquarters in San Francisco and other offices in Bogotá, Dublin, Hong Kong, London, Madrid, Mountain View, Munich, New York City, Singapore and Tallinn.

* In this role, you will work on our foundational building blocks, implementing the vision of self-service SOA infrastructure within a company experiencing exponential growth and rapid-fire product rollouts. You will develop a suite of scalable, resilient and very secure services underlying all of our products. You will be implementing globally available, resilient and highly performant services used by millions of people every day. You will make key technical decisions and design choices, as well as writing amazing code, and you’ll provide advice and support to more junior engineers.

* Join a small, high-impact, multi-talented engineering team with openings in San Francisco, CA and Tallinn, Estonia. * Create, maintain, own and operate your team’s services that supporting fundamental capabilities within Twilio’s products. * Tackle some of the most challenging problems you can face developing high availability services in a distributed cloud environment that needs to scale exponentially. * Help evaluate and choose emerging technologies…new service protocols and architectures, self-healing capabilities, globally distributed caching, performance and code quality tooling, etc. Determine the right tool for the right task. * Write high quality, maintainable code with extensive test coverage in a fast-paced startup environment with tight schedules.

* In Core Services, we believe in versatility and complementing proficiencies being key to forming the best team. We are looking for senior-level talent with a variety of skills and specializations. **You should have at least 3 of the proficiencies below to be considered for the role:** * **Java.** You are a rock-solid backend Java developer and use it regularly. You know and apply OO and best practices in Java. This is a key language for the team. * **Internet-scale services.** You understand scalability challenges and performance of server-side code. You can design and develop horizontally scalable, resilient and high performance REST services. You’re familiar with distributed datagrids like Hazelcast. * **Databases.** You’re comfortable with SQL databases and replication schemes to enable high availability with failover. You have expert level experience with traditional RDBMS databases. * **Cloud.** You are proficient in cloud technologies and are hands-on in at least one cloud platform: AWS, Azure or GCC. You are able to both design and develop cloud-based systems and operate them in an automated fashion. * **Testing.** You are passionate about quality and can engineer it at all stages of software development. You are able to design and develop a quality pipeline requiring as little human intervention as possible. * **Security.** You are able to design secure distributed systems and assure operational processes around security. You understand fitness for purpose of security techniques. * **Agile.** You are an expert in practical aspects of running Scrum (or other agile methodologies) within a team and in a distributed cross-team environment. You know how to ship rapidly and frequently. * **Bonus points:** * Proficiency with Scala or Python. * Experience working in a DevOps environment. * Experience with NoSQL databases. * Sound understanding of CI/CD build and deployment toolchains.