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TextNow

SIM-based unlimited calling and texting

Senior Software Developer - Artificial Intelligence

AI Application EngineeringConfirmed live in the last 24 hours
Full-timeWaterloo, ON, CanadaIn-person

About the Job

Requirements

  • At least 5 years of software development experience.
  • Experience designing and delivering production-grade software systems.
  • Strong programming skills in one or more modern languages such as Go, Python, TypeScript, or Ruby.
  • Experience with cloud platforms and modern deployment practices.
  • Hands-on experience building applications with large language models.
  • Experience training custom models.
  • Understanding of prompt engineering, evaluation methodologies, and AI system design.
  • Experience with workflow automation and orchestration platforms.
  • Familiarity with retrieval systems, vector databases, knowledge management, or agent frameworks.
  • Ability to operate in ambiguous environments with evolving requirements.
  • Strong communication skills with technical and non-technical audiences.
  • Demonstrated ability to lead projects from concept through deployment.
  • Ability to identify opportunities independently and drive execution.

Responsibilities

  • Design, develop, and deploy AI-enabled applications, services, and automations.
  • Build internal tools and intelligent workflows using large language models, AI agents, and orchestration frameworks.
  • Evaluate emerging AI technologies and rapidly prototype new concepts.
  • Transform proofs of concept into scalable production systems.
  • Drive architecture and implementation decisions for AI initiatives.
  • Define patterns and standards for AI application development.
  • Balance experimentation speed with security, governance, and operational excellence.
  • Ensure solutions are reliable, observable, maintainable, and cost-effective.
  • Partner with business stakeholders to identify high-value AI opportunities.
  • Translate business problems into technical solutions.
  • Consult with teams across Product, Engineering, Customer Care, Trust & Safety, Marketing, Finance, and Operations.
  • Help teams adopt AI capabilities and best practices.
  • Develop reusable AI services, frameworks, and components.
  • Create integrations with enterprise platforms and business systems.
  • Design automation workflows that reduce manual effort and increase operational efficiency.
  • Contribute to AI governance, evaluation frameworks, and responsible AI practices.
  • Coach engineers and technical stakeholders on AI development approaches.
  • Share knowledge, best practices, and lessons learned.
  • Drive technical discussions and influence the direction of the company's AI strategy.

Desired Qualifications

  • Experience building enterprise AI solutions.
  • Experience with OpenAI, Anthropic, Google, or open-source model ecosystems.
  • Experience with observability and AI performance monitoring.
  • Experience implementing AI governance, evaluation, or security frameworks.
  • Telecommunications industry experience.
  • Experience building internal developer productivity tools.

About the Company

TextNow

SIM-based unlimited calling and texting

TextNow provides low-cost mobile communication by offering a SIM card that delivers unlimited nationwide calling and texting over 5G with free essential data at no monthly fee. Revenue comes from selling data passes (hourly, daily, or as-needed) and optional premium features. It operates in the United States and Canada, targeting individuals, families, and small businesses seeking affordable options. Distinguishing factors include a zero-monthly-cost model for core services, a simple pay-as-you-go data-passing structure, and a focus on accessibility and inclusivity. The company aims to make affordable, reliable communication available to everyone, expanding access while maintaining budget-friendly plans.

Company size
201-500
Company stage
Grant
Total funding
$3.4M
Headquarters
Waterloo, Canada
Founded
2009

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