Lead Full-Stack Engineer – Voice AI, Integrations

Berry Virtual

. Design, build, and maintain CRM, EMR/EHR, business-system, legal, medical, accounting, calendar, and other industry-tool integrations .

Posted 11/2/2026full-timeRemote • Philippines, India, Honduras, Colombia, MexicoSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive experience in building and maintaining production SaaS systems, with strong skills in TypeScript, JavaScript, and Python. Proficient in integrating various industry tools and managing cloud infrastructure while ensuring data consistency and security.

Highest-signal resume keywords

TypeScript/JavaScript ProficiencyBackend Development ExperienceREST API IntegrationCloud Infrastructure ManagementTwilio and OpenAI API Integration

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

TypeScriptJavaScriptPythonREST APIsOAuth 2.0Relational DatabasesCI/CDAsynchronous ProcessingData MappingTwo-Way Synchronization

Soft Skills

Clear CommunicationTechnical JudgmentLeadership

Tools & Technologies

TwilioOpenAIGoogle CalendarMicrosoft GraphClioMyCasePracticePantherAthenahealthOffice AllyFHIR/HL7

Industry Keywords

CRMEMR/EHRSaaSHealthcare IntegrationsLegal PlatformsScheduling WorkflowsIncident ResponseSecure Credential StorageVendor Approval ProcessesIntegration Partnerships

Tech Stack

Tools & technologies

CloudJavaScriptPythonTypeScript

About the role

Key responsibilities & impact

Design, build, and maintain CRM, EMR/EHR, business-system, legal, medical, accounting, calendar, and other industry-tool integrations
Own availability checks, booking, rescheduling, cancellations, confirmations, and synchronization across systems
Resolve time-zone issues, duplicate bookings, scheduling conflicts, and failed updates
Connect Twilio and OpenAI conversations to backend actions including intake, contact creation, scheduling, call transfers, and follow-up
Build reusable connectors with secure authentication, consistent data mapping, background processing, retries, duplicate prevention, monitoring, and failure recovery
Deliver changes across frontend, backend, databases, and third-party services
Investigate production problems and implement fixes directly
Improve cloud infrastructure, deployments, CI/CD, observability, performance, security, and operating costs
Work closely with the CTO to translate priorities into practical technical plans
Guide developers, review code, remove blockers, and remain accountable through testing, deployment, and customer use

Requirements

What you’ll need

Typically 7+ years of professional software engineering experience, with demonstrated ownership of production SaaS systems
Strong TypeScript/JavaScript skills, substantial backend experience, and proficiency in Python
Experience building frontend applications, backend services, APIs, and relational database systems
Proven experience shipping and maintaining multiple production integrations using REST APIs, OAuth 2.0, webhooks, and asynchronous processing
Strong understanding of two-way synchronization, rate limits, token refresh, partial failures, reconciliation, and data consistency
Experience with scheduling or transactional workflows where incorrect or duplicate actions have real consequences
Practical cloud infrastructure, containerization, CI/CD, logging, monitoring, and incident-response experience
Ability to understand an existing codebase quickly, identify root causes, and deliver focused improvements
Clear communication, sound technical judgment, and experience leading other engineers while remaining an active individual contributor
Twilio voice, real-time audio streaming, OpenAI APIs, and AI tool/function calling
Google Calendar, Microsoft Graph, and scheduling-platform integrations
Legal platforms such as Clio, MyCase, PracticePanther, or Lawmatics
Healthcare integrations such as athenahealth or Office Ally, including familiarity with FHIR/HL7 where applicable
Experience engineering systems that handle sensitive patient or client information, including tenant isolation, access controls, audit trails, and secure credential storage
Experience navigating vendor approval processes, restricted APIs, sandbox access, and integration partnerships
Stable and high-speed internet connection preferably 25 MBPS or higher with backup in cases of power interruption or service provider issues
Own PC/laptop with 8GB RAM and a processor of Core i5 / AMD Ryzen 3 / 2013 Mac equivalent or higher
Windows 10 or above / Catalina 10.15 or newer
Up-to-date web browsers and security software
500GB/128 SSD storage
Headset/earphone with noise cancellation and webcam at 720p or higher resolution
Designated, quiet, and well-organized workspace free from distractions

Benefits

Comp & perks

Permanent remote work setup
Competitive starting rate paid in USD
Internet Allowance
HMO insurance (PH)
Paid US holidays
Paid Vacation and Sick Leaves