Senior Software Engineer L3

Job description

Who we are

At Twilio, we’re shaping the future of communications, all from the comfort of our homes.

We deliver innovative solutions to hundreds of thousands of businesses (https://customers.twilio.com/) and empower millions of developers worldwide to craft personalized customer experiences.

Our dedication to remote-first work (https://www.twilio.com/en-us/blog/open-work) , and strong culture of connection and global inclusion means that no matter your location, you’re part of a vibrant team with diverse experiences making a global impact each day.

As we continue to revolutionize how the world interacts, we’re acquiring new skills and experiences that make work feel truly rewarding.

Your career at Twilio is in your hands.

See yourself at Twilio

Join the team as Twilio’s next Senior Software Engineer (L3)

About the Role

This position is needed to enable Segment customers to instrument high-quality, first-party data from their mobile apps, which drives their Analytics, Customer Engagement & overall decision making.



Segment is Twilio’s Customer Data Platform (CDP) which standardizes and streamlines data infrastructure for Twilio customers.

From startups to the Fortune 100, businesses of all sizes rely on the Segment Platform to collect data once, and then deliver across Segment’s catalog of hundreds of business integrations and thousands of customer data warehouses.



Instrumentation - of web, mobile and server apps - is the most common gateway to getting this data into Segment.

The Data Collection team builds software that brings more than 700BN events/month at greater than 1 Million requests per second into Segment’s cloud infrastructure.



As a Senior Software Engineer on the Data Collection team, you’ll primarily be responsible for our Analytics SDK on the React-Native mobile platform.

You’ll focus on maintaining and improving our existing SDK, analytics-react-native (https://github.com/segmentio/analytics-react-native) (and its catalog of integrations), as well as building out new technologies for future Segment features.



Responsibilities

In this role, you’ll:


+ Architect platform-specific approaches to software Instrumentation and Enrichment, with a focus on our customers’ Developer Experience

+ Implement, review and release updates to high-performance Segment libraries, to support our existing customers as they look to aggregate and analyze data at scale

+ Collaborate with product owners and engineers across Segment to create new experiences for our customers, while maintaining consistency across our service offerings

+ Interact with and strengthen relationships with Segment’s open source community


Qualifications

Twilio values diverse experiences from all kinds of industries, and we encourage everyone who meets the required qualifications to 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!

Required:


+ React-Native Expertise: 5+ years of engineering experience writing, building and distributing mobile apps for React-Native

+ Strong understanding of RN architecture, component lifecycle, performance optimization and testing for multiple target platforms

+ Experience with React Native upgrade cycles and cross-platform development (iOS/Android)

+ Experience with native module development and competency with underlying native languages (esp.

Swift & Kotlin)

+ Understanding of NPM ecosystem and SDK release/management processes


Software Engineering Excellence


+ Cross-platform debugging skills across iOS/Android/JavaScript boundaries

+ Detailed understanding of native mobile platforms, with a focus on performance, energy, and architecture paradigms

+ SDK/library development experience - has shipped developer-facing tools used by external teams

+ Systems integration experience with event-driven architectures and data pipelines


Collaboration & Problem-solving


+ Consultative approach to feature development - a desire to understand business context and user needs before proposing solutions

+ Adaptable to evolving requirements and comfortable with iterative development cycles

+ Strong technical communication skills for both technical and business stakeholders

+ Constructive approach to technical discussions and code reviews

+ Experience with web, mobile & server-side technologies.

Willingness to learn and grow your skill set in new libraries & languages.




Desired:


+ Experience building and distributing native apps across Android and iOS platforms.

+ Maintaining and contributing to open source projects.

+ Experience with server-side technologies, including awareness of scalability and security

+ Customer Data Platform (CDP) or Segment-specific knowledge including use-cases as well as experience implementing Analytics


Location


+ This role will be remote, but is not eligible to be hired in CA, CT, NJ, NY, PA, WA.

+ This role will be remote, but is not eligible to be hired in San Francisco, CA, Oakland, CA, San Jose, CA, or the surrounding areas.


Travel

We prioritize connection and opportunities to build relationships with our customers and each other.

For this role, you may be required to travel occasionally to participate in project or team in-person meetings.

What We Offer

Working at Twilio offers many benefits, including competitive pay, generous time off, ample parental and wellness leave, healthcare, a retirement savings program, and much more.

Offerings vary by location.

Compensation

Please note this role is open to candidates outside of California, Colorado, Hawaii, Illinois, Maryland, Massachusetts, Minnesota, New Jersey, New York, Vermont, Washington D.C., and Washington State.

The information below is provided for candidates hired in those locations only.

The estimated pay ranges for this role are as follows:


+ Based in Colorado, Hawaii, Illinois, Maryland, Massachusetts, Minnesota, Vermont or Washington D.C. : $94720.00- $118400

+ Based in New York, New Jersey, Washington State, or California (outside of the San Francisco Bay area): $ 100240- $125,300

+ Based in the San Francisco Bay area, California:$111,400.00 - $139,200.00

+ This role may be eligible to participate in Twilio’s equity plan and corporate bonus plan.

All roles are generally eligible for the following benefits: health care insurance, 401(k) retirement account, paid sick time, paid personal time off, paid parental leave.


The successful candidate’s starting salary will be determined based on permissible, non-discriminatory factors such as skills, experience, and geographic location.

Application deadline information

Applications deadline for this role is 11/30/2025.

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 (https://www.twilio.com/company/values) .

Additionally, we empower employees to build positive change in their communities (https://twilio.org/support-and-resources/impact-fund) 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.

(https://www.twilio.com/company/jobs#open-positions)

Twilio is proud to be an equal opportunity employer.

We do not discriminate based upon race, religion, color, national origin, sex (including pregnancy, childbirth, reproductive health decisions, or related medical conditions), sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, genetic information, political views or activity, or other applicable legally protected characteristics.

We also consider qualified applicants with criminal histories, consistent with applicable federal, state and local law.

Qualified applicants with arrest or conviction records will be considered for employment in accordance with the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act.

Additionally, Twilio participates in the E-Verify program in certain locations, as required by law.

Required Skill Profession

Other General