Five9 / Twilio Developer

Five9 / Twilio Developer We are seeking a Five9 / Twilio Developer to develop the design, implementation, and optimization of cloud-based contact center solutions. This role requires a strategic mindset combined with strong technical leadership to architect scalable, secure, and high-performing customer engagement platforms. Work Model We strive to provide flexibility wherever possible. Based on this role’s business requirements, this is a remote position open to qualified applicants in Chicago-IL. Regardless of your working arrangement, we are here to support a healthy work-life balance through our various wellbeing programs. Key Responsibilities Design and develop custom Twilio Flex plugins using React and the Flex Plugin Builder framework Configure and extend Twilio TaskRouter for intelligent routing, queuing, and worker management Build and maintain Twilio Studio flows for IVR, chatbot, and self-service workflows Integrate Twilio Flex with CRM systems (Salesforce, ServiceNow, etc.) via REST APIs and Flex UI components Develop custom components, dialpad UIs, agent desktops, and supervisor dashboards within Flex Configure SIP trunking, PSTN, and number management within Twilio Console and Programmable Voice Implement omnichannel capabilities including voice, SMS, WhatsApp, webchat, and email Design and implement DTMF and speech-recognition IVR menus using Twilio Programmable Voice and Studio Write unit and integration tests for Flex plugins and Twilio Functions Contact Center Solution Design Design end-to-end Five9 VCC contact center solutions aligned with business and compliance requirements Develop High-Level and Low-Level Design (HLD/LLD) documentation Design secure integrations with CRM systems, APIs, and backend platforms Ensure high availability, resiliency, and disaster recovery standards Installation & Implementation Lead deployment and configuration of Five9 / Twilio environments (Dev, UAT, Prod) Configure campaigns (inbound/outbound/blended), skills, agents, queues, and routing rules Implement IVR scripts, call flows, and platform configurations Support SIP trunking and PSTN telephony integrations Collaborate with network, security, and infrastructure teams Perform system validation testing and production go-live support Configuration & Administration Configure Five9 modules including ACD, IVR, WFM, Reporting, and Call Recording Manage user provisioning, roles, and access control Implement call routing logic, compliance configurations, and recording policies Monitor system performance and optimize routing/capacity planning Troubleshoot call quality, connectivity, and configuration issues Cloud Engineering Design and manage cloud-based contact center architecture Integrate Five9 with REST APIs and cloud-native services Implement secure authentication (OAuth, SSO, SAML) Ensure compliance with industry security standards (PCI, SOC2, etc.) Support networking concepts (VPNs, firewalls, load balancing) Optimize performance and scalability in cloud environments Required Qualifications 4–5+ years of experience in contact center technologies (Five9 / Twilio) Strong experience with Five9 VCC (VCC, IVA, ADP, Reporting) and SIP, VoIP, and telephony concepts Experience with REST APIs and integrations Experience with CRM integrations (Salesforce or similar) Experience with SSO / SAML / OAuth authentication Basic SQL and reporting knowledge Soft Skills Strong analytical and troubleshooting abilities Excellent communication and stakeholder management skills Ability to work effectively in cross-functional/global teams Strong documentation and design articulation Proactive, solution-oriented mindset Nice to Have Certifications in Five9 or Cloud platforms Exposure to DevOps (CI/CD, automation scripting) Experience with Workforce Optimization tools (e.g., Verint WFM) Pay Transparency The annual salary range for this role is $95,500 – $120,000 USD, depending on experience, skills, qualifications, and internal equity. This position is also eligible for a comprehensive benefits package, including medical, dental, vision, paid time off, holidays, and retirement plans. Benefits Medical / Dental / Vision / Life Insurance Paid holidays plus Paid Time Off 401(k) plan and contributions Long-term / Short-term Disability Paid Parental Leave Employee Stock Purchase Plan Disclaimer The salary, other compensation, and benefits information is accurate as of the date of this posting. Cognizant reserves the right to modify this information at any time, subject to applicable law. Cognizant is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected Veteran status, age, or any other characteristic protected by law. #J-18808-Ljbffr Cognizant