Principal Software Engineer

Calabrio, Inc.

full-time

Posted on: 9/24/2025

Origin: • 🇨🇦 Canada

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Lead

AWSAzureCloudDistributed SystemsDynamoDBGoogle Cloud PlatformJavaJavaScriptPostgresPythonReactSDLCSQL

About the role

Design and architect large-scale, mission-critical SaaS applications serving tens of thousands of users worldwide
Build and maintain AI-enabled back-end services, data pipelines, and front-end applications for transcription and customer experience analytics
Collaborate with data science teams to operationalize NLP, speech-to-text, and LLM models for summarization, sentiment analysis, and semantic search
Work with both relational and non-relational databases to ensure efficient storage and retrieval of transcription and customer interaction data
Build and consume REST APIs to enable seamless integration of transcription insights across applications
Serve as a technical leader: write specifications, propose scalable solutions, and mentor junior developers
Partner with designers, QA engineers, product managers, and DevOps to deliver high-quality, AI-powered software solutions
Participate in, contribute to, and occasionally lead Agile ceremonies; adhere to Agile methodologies for timely delivery
Troubleshoot, debug, and optimize existing applications in a large-scale distributed environment to enhance reliability and performance
Stay current with advances in AI, NLP, and full stack development to evolve the platform
Participate in the team on-call rotation to support engineering teams and production environments

8+ years of professional experience in software development, including 3+ years in senior or above roles within enterprise SaaS environments
Proficiency in Python, Java, SQL, React, and JavaScript
Hands-on expertise in AI/ML development, with a focus on transcription, speech analytics, NLP, and LLM-based applications
Strong experience using AI-assisted development tools such as GitHub Copilot, Cursor, and Windsurf
Experience with relational databases (PostgreSQL, SQL) and non-relational databases (DynamoDB, Opensearch)
Strong ability to design, develop, and consume REST APIs and similar technologies
Adaptable, with the ability to switch between technical stacks and domains
Deep experience in modern cloud computing environments such as AWS (preferred), GCP, and/or Azure
Adept at troubleshooting and optimizing complex distributed systems at scale
Strong familiarity with the software development life cycle (SDLC) and Agile methodology
Candidate must be located in Ontario or British Columbia