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Full-Stack Engineer (Python / React)
Posted by Sigma Software on 12 October 2026. Still on their SmartRecruiters board when we checked 46 min ago. Half of Sigma Software's roles come down within 35 days.
What the posting is about
Develop and maintain full-stack components of a data-intensive web system. Design and implement REST APIs, and collaborate with stakeholders in an Agile environment. Experience with Python, React, and cloud infrastructure required.
Read out of the posting
Levelmid
Experience asked3+ years
EmploymentFull time
LocationWarsaw, Masovian Voivodeship, Poland
RemoteYes
Visa sponsorshipNot stated
SalaryNot published, and most postings do not
Posted2026-10-12
Found viasmartrecruiters, direct from their system
We had it within the hour it went up.
The posting, as the company wrote it
Employment: Full-time
Experience level: Mid-Senior Level
Job Description
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
Qualifications
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
Additional Information
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
Company Description
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
Also open at Sigma Software
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