Middle Full-Stack Software Engineer – AI Voice Systems

Sigma Software Group

Full-Stack Software Engineer developing AI communication solutions with a focus on TypeScript and Python. Involves frontend and backend tasks in a fast-scaling team.

Posted 5/23/2026full-timeRemote • 🇺🇦 UkraineMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

ApolloDockerGraphQLJavaScriptMongoDBNext.jsPostgresPythonReactTypeScript

About the role

Key responsibilities & impact

Develop and maintain full-stack features in a production environment.
Build user-facing functionality using TypeScript, React, and Next.js.
Work with server-side rendering and general Next.js patterns.
Build, consume, and maintain GraphQL APIs, ideally using Apollo.
Read, write, and maintain backend services in Python.
Contribute to API design, data modeling, and service-to-service communication.
Support integrations with CRMs, telecom providers, and AI-related vendors.
Work with MongoDB and Aurora / PostgreSQL for data storage.
Participate in debugging across the stack — from browser DevTools to backend logs.
Work with Docker and containerized deployments.
Contribute to CI/CD improvements, deployment safety, logging, monitoring, and observability.
Help keep production services stable, reliable, and easy to support.
Communicate directly with the customer team and take ownership of tasks from start to finish.

Requirements

What you’ll need

3+ years of full-stack engineering experience, preferably with a frontend focus.
Experience owning features end to end in a production environment.
Good working knowledge of TypeScript.
Strong experience with React and Next.js.
Familiarity with server-side rendering and general Next.js patterns.
Experience working with GraphQL, ideally Apollo.
Ability to build and consume GraphQL APIs.
Comfortable working with Python: able to read, write, and maintain backend services.
General understanding of backend fundamentals: API design, data modeling, and how services communicate with each other.
Experience with Docker and containerized deployments.
Experience with MongoDB or a relational database such as PostgreSQL / Aurora.
Understanding of basic schema design and ability to write reasonable queries.
Ability to debug across the stack, from frontend issues to backend logs.
Interest in production topics: logging, monitoring, reliability, and service health.
Proactive communication and ability to take a task and drive it without constant hand-holding.
Comfortable working in a small team with direct customer communication.

Benefits

Comp & perks

Employees can work remotely

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

TypeScriptReactNext.jsGraphQLApolloPythonMongoDBAuroraPostgreSQLDocker

Soft Skills

proactive communicationownershipdebuggingteam collaborationcustomer communicationtask managementreliabilityservice healthobservabilitylogging