Sigma Software Group

Full-Stack Engineer

Sigma Software Group · Warsaw, Poland
Warsaw, Poland Posted 2026-10-15
Type
Full-time
Experience
3+ yr
  • Develop and maintain Back-end and Front-end components of a web-based data-intensive system
  • Design, implement, and support REST APIs and integrations with internal platforms and services
  • Build and maintain scalable applications and database solutions
  • Write clean, maintainable, and testable code following engineering best practices
  • Create and maintain unit, integration, and end-to-end tests
  • Participate in code reviews and contribute to technical documentation
  • Collaborate closely with stakeholders, engineers, and product teams during regular meetings and planning sessions
  • Participate in Agile ceremonies including estimation, backlog grooming, sprint planning, and retrospectives
  • Contribute to system reliability, deployment automation, and performance optimization activities
  • 3+ years of professional software development experience with Python
  • Strong experience with SQL and PostgreSQL
  • Working knowledge of TypeScript and React
  • Experience building and maintaining RESTful APIs
  • Understanding of cloud infrastructure and modern application deployment approaches
  • Familiarity with Kubernetes and containerized environments
  • Experience with CI/CD practices and related tools such as GitLab CI
  • Understanding of software development best practices, testing approaches, and code quality standards
  • Upper-Intermediate English level

WILL BE A PLUS

  • Experience with Next.js
  • Experience with Microsoft Azure, especially AKS
  • Familiarity with MCP and RAG-based systems

Looking for an opportunity to work on scalable cloud-native systems within the telecommunications domain? We are searching for a Middle Full Stack Engineer with strong Python expertise and solid React skills to join an international team building a modern Product Information Service.

CUSTOMER

Our Customer is a leading Swedish telecommunications company delivering innovative large-scale technology solutions across complex infrastructure environments. Operating internationally and serving millions of users, the company collaborates with global technology leaders to drive digital transformation initiatives and modernize enterprise connectivity services through cloud-native and data-driven solutions.

PROJECT

The team is developing a Product Information Service — a scalable cloud-native platform designed to manage product-related data and enable seamless integration across multiple systems. The solution focuses on reliable data management, API development, and distributed system integration to ensure efficient information flow between platforms.

As part of the project, you will participate in the full software development lifecycle, contributing to architecture discussions, implementation, testing, deployment, and continuous improvement initiatives within a modern engineering environment.

Key Technologies: Python, React, TypeScript, PostgreSQL, Kubernetes, GitLab CI, Microsoft Azure, REST APIs

PERSONAL PROFILE

  • Strong problem-solving and analytical skills
  • Ability to work independently and collaboratively within distributed teams
  • Good communication and stakeholder interaction skills
  • Proactive mindset with attention to quality and maintainability
  • Willingness to contribute to technical discussions and continuous improvement initiatives
PythonPostgreSQLTypeScriptReactKubernetesNext.js
Sigma Software Group

Sigma Software Group

IT Consulting · Private · Stockholm, Sweden

Stage & Valuation
Private
Key Investors
Danir Group
Open roles on NewJob
Most hiring in
Engineering (33) · Data & ML (11) · Operations (3)
Sigma Software Group provides software development, IT consulting, and engineering services to enterprises and startups.
IT Consulting Software Development Engineering Services
E
JavaScript Developer
Brazil, BRAZIL, Brazil
Engineering
O
Project Coordinator
Warsaw, Poland
Operations
O
Senior IT Lawyer
Kyiv, Kyiv city, Ukraine
Operations
See all 25+ roles at Sigma Software Group →
C
Senior Software Engineer I
CoreWeave Sunnyvale, CA
Engineering
$153K–$204K
L
Full-Stack Engineer
Lendbuzz Boston, MA Hybrid
Engineering
$110K–$120K
V
Member of Technical Staff - Full-Stack Software Engineer
Vinci4D Palo Alto, CA Hybrid
Engineering
$180K–$220K
O
Geospatial Full-Stack Engineer
Orcrist Technologies Remote Remote
Engineering
See all Engineering roles →

Interested in this role?

Apply directly on the company site — no recruiter middleman, no account required.

Apply now →
Apply on company site