Full Stack Developer

About the job

Sigma Group, established in 2003, has become a significant player in the telecommunications industry. Sigma Group comprises multiple brands, including Sigma Telecom LLC, Sigma Softwares, and Sigma Solutions, among others. The organization is committed to expanding its investments and sustaining it's growth alongside evolving technology.

Sigma Group is seeking a highly skilled Full Stack Developer with strong experience in Node.js, Python, Kubernetes, DevOps, Data Mining, and a solid understanding of telecom systems such as high-concurrency voice/SMS traffic.

This role focuses on building scalable backend systems, deploying microservices, implementing AI-driven automation, and supporting telecom-grade infrastructure.

🔹 Responsibilities

*Full-Stack Development:

Develop backend services using Node.js and Python

Build scalable microservices and API-driven architectures

Develop internal tools, dashboards, and workflow automation

Integrate AI/LLM models into existing processes and systems

*DevOps & Infrastructure:

Containerize and deploy applications with Docker & Kubernetes

Build and manage CI/CD pipelines (GitHub Actions, GitLab CI, Jenkins)

Ensure system reliability, uptime, and performance monitoring

Work with cloud platforms (AWS, GCP, DigitalOcean)

*AI & Automation:

Implement AI-based pattern recognition and anomaly detection

Build intelligent automations, chatbots, and rule-based systems

Use machine learning and LLM APIs to enhance product capabilities

🔹 Requirements

4+ years of experience in software development

Expert in Node.js

Strong proficiency in Python (FastAPI, Flask, data processing tools)

Experience with Kubernetes, Docker, DevOps pipelines

Strong background in data mining, ETL, analytics

Solid understanding of telecom technologies (SIP, signaling, routing)

Experience with high-concurrency, high-performance systems

Experience with relational and non-relational databases (PostgreSQL, MongoDB, Redis)

Knowledge of message queues (Kafka, RabbitMQ)

*Preferred Qualifications:

Experience integrating AI models (OpenAI, Gemini, etc.)

Basic knowledge of coding for automation (webhooks, APIs)

Understanding of microservice architecture at scale

✨ Why Join Sigma Group?

You will be part of real digital transformation. Your work directly shapes how multiple companies operate.

Direct impact on global traffic operations and automation

Opportunities to innovate and lead technical development

Fast-growing international technology environment

Your ideas matter. We are not a place where innovation is blocked — we encourage it.

You will work with modern tools, especially AI, automation, and next-generation systems.

You will grow fast. The role involves continuous learning, new technologies, and real responsibility.

We are a dynamic, young, and collaborative environment where problem-solvers thrive.

🔹 What We Offer

A dynamic and collaborative work environment

Opportunity to build advanced automations and AI-powered solutions

Growth within a multi-company structure

Competitive salary & performance-based carrier growth

Regular team-building activities and social events

Office located in Ataşehir, Istanbul