Remote Full-Stack Engineer, Chat Platform & AI

Sigma Systems, Inc.

Pittsburgh (Allegheny County)

Remote

USD 83,000 - 124,000

Full time

3 days ago

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Job summary

Sigma Systems, Inc. is seeking a Remote Software Engineer (Digital) to join an Agile team building scalable chat platform applications. You will contribute across full-stack development, focusing on real-time communications, SDK integrations, and AI-driven conversational features.

The ideal candidate brings hands-on experience with TypeScript, Node.js, Python, GCP, Dialogflow CX/GECX, and WebSockets, and can troubleshoot production-grade applications within an Agile environment.

Qualifications

Bachelor's degree in Computer Science, IT, or a closely related discipline.
3+ years of professional software development experience.
Strong proficiency in TypeScript, Node.js, and Python.
Hands-on experience with Google Cloud Platform (GCP).
Experience implementing Dialogflow CX, GECX, or conversational AI solutions.
Experience integrating, supporting, or consuming SDKs for web, iOS, and Android applications.
Experience with REST APIs, HTTPS, and JSON.
Experience developing or supporting real-time communication features using WebSockets.
Experience with NoSQL and/or SQL databases.
Proven ability to troubleshoot complex technical issues across full-stack applications.
Experience supporting production-grade, scalable, consumer-facing applications.

Responsibilities

Design, develop, test, and maintain robust, scalable applications for the enterprise Chat Platform.
Write clean, efficient, maintainable code using TypeScript, Node.js, and Python while following established coding standards.
Participate in code reviews and apply software engineering best practices.
Design, develop, and maintain real-time chat and communication features using WebSockets.
Develop, integrate, and support SDKs for web, iOS, and Android platforms to enable seamless omnichannel messaging experiences.
Build, maintain, and support system integrations across enterprise communication channels and backend services.
Utilize Dialogflow CX, GECX, and AI technologies to develop intelligent conversational experiences and integrate AI capabilities into the broader platform architecture.
Independently diagnose, troubleshoot, and resolve complex technical issues across backend services, real-time communication layers, and client-side SDKs.
Participate in the full software development lifecycle, from initial concepts and technical design through implementation, testing, and deployment.
Take an enterprise-wide architectural perspective when evaluating technical solutions and system integrations.
Participate in Agile/Scrum ceremonies, including sprint planning, task estimation, and development activities.
Manage development tasks using Jira, digital.ai Agility, or RTC.
Communicate technical issues, risks, and blockers to the Scrum Master and relevant team members in a timely manner.
Follow established practices for source control management, unit testing, build processes, and production operations.
Collaborate with engineers, technical teams, and stakeholders to deliver reliable software solutions.
Provide technical guidance and mentorship to junior team members as needed.