About the role

What will you do at Fidelity Investments?

Job Description

Principal Software Engineer- Contact Center Platform Note: Fidelity will not provide sponsorship for this role.

The Role

The Enterprise Contact Center Technology team is seeking a Principal Software Engineer to help design and build our next-generation, omni-channel contact center platform. This platform is built on open-source technologies and minimizes reliance on commercial software, enabling flexibility, scalability, and innovation across our contact center ecosystem.

In this role, you will

lead the design and development of core contact center capabilities—including call routing, queuing, reporting, workforce management, and advanced IVR—supporting voice, chat, and digital channels.
You will engineer and maintain scalable components using technologies such as Asterisk, FreeSWITCH, Kamailio, WebRTC, SIP, RTP, Matrix, and Rocket.Chat, while enhancing IVR platforms with speech recognition and conversational AI integrations.
You will build and expose APIs, microservices, and real-time data pipelines to enable seamless omni-channel customer interactions, and collaborate closely with platform engineering, QA, and operations teams to deliver secure, resilient, and highly available solutions.
The role also includes leading migrations from legacy systems to cloud-native, open-source architectures and advancing CI/CD pipelines, automated testing, and infrastructure-as-code practices.
The Expertise and Skills you Bring 8+ years of IT experience, including deep, hands-on experience with open-source telephony and messaging technologies.
Demonstrated success building core contact center capabilities, including IVR solutions and workforce management systems.
Strong telephony engineering background, with experience designing, deploying, and troubleshooting voice platforms and protocols such as SIP, RTP, PBX, and VoIP.
Proficiency in cloud-native architectures, microservices-based development, and API design.
Experience supporting real-time communications, speech recognition, and conversational AI solutions.
Working knowledge of CI/CD pipelines, automated testing frameworks, and DevOps best practices.
Excellent communication skills and a collaborative, team-oriented mindset.

The Team

Enterprise Contact Center Technology delivers the world-class capabilities that connect Fidelity associates with millions of participants, members, and customers. Our team owns the voice, email, and web chat communication channels that power these interactions. Continuous improvement is core to our mission, and we seek engineers who are naturally curious, innovative, and relentlessly focused on delivering exceptional customer and associate experiences.

We take pride in our engineering excellence, commitment to learning, team-first culture, and focus on delivering meaningful business value. Our platform supports over 20 million clients, processes 35+ million customer interactions annually, and operates on a 24x7 basis—making reliability, scalability, and performance critical to everything we do.

Certifications: Category: Information Technology Please be advised that Fidelity’s business is governed by the provisions of the Securities Exchange Act of 1934, the Investment Advisers Act of 1940, the Investment Company Act of 1940, ERISA, numerous state laws governing securities, investment and retirement-related financial activities and the rules and regulations of numerous self-regulatory organizations, including FINRA, among others.

Those laws and regulations may restrict Fidelity from hiring and/or associating with individuals with certain Criminal Histories. At Fidelity, we are passionate about making our financial expertise broadly accessible and effective in helping people live the lives they want! We are a privately held company that places a high degree of value in creating and nurturing a work environment that attracts the best talent and reflects our commitment to our associates.

We are proud of our diverse and inclusive workplace where we respect and value our associates for their unique perspectives and experiences. For information about working at Fidelity, visit FidelityCareers.com. Fidelity Investments is an equal opportunity employer.

Fidelity will reasonably accommodate applicants with disabilities who need adjustments to participate in the application or interview process.

To initiate a request for an accommodation please contact the following: For roles based in the US: Contact the HR Leave of Absence/Accommodation Team by sending an email to [email protected], or by calling 800-835-5099, prompt 2, option 2 For roles based in Ireland: Contact [email protected] For roles based in Germany: Contact [email protected] Fidelity Privacy Policy

Which skills does this role require?

AsteriskFreeSWITCHKamailioWebRTCSIPRTPMatrixRocket.ChatIVRMicroservicesAPI designCloud-native architectureCI/CDAutomated testingDevOpsConversational AISoftware EngineeringContact CenterOpen-sourceAPICloud-nativeSpeech recognitionTelephonyVoIPPBXInfrastructure-as-codeEnterprise technologyScalabilityOmni-channelReal-time data pipelinesREST APIs

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