{"id":2728288,"url":"https://alion.io/job/sigma-software-group-junior-full-stack-engineer-python-react","title":"Junior Full-Stack Engineer (Python / React)","company":{"id":6266,"name":"Sigma Software Group","domain":"sigma.software","url":"https://alion.io/company/sigma-software-group","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"services","is_intermediary":false,"listed_via":null,"ats_vendor":"SmartRecruiters","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"junior","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Warsaw, Poland"],"countries":["PL"],"hiring_countries":["PL"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":25000,"max_usd":74000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":16},"experience_years_min":2,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"Azure","optional":false},{"name":"Azure AKS","optional":false},{"name":"CI/CD","optional":false},{"name":"GitLab CI","optional":false},{"name":"Kubernetes","optional":false},{"name":"Model Context Protocol","optional":false},{"name":"Next.js","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Python","optional":false},{"name":"React.js","optional":false},{"name":"Rest API","optional":false},{"name":"SQL","optional":false},{"name":"TypeScript","optional":false},{"name":"JavaScript","optional":true}],"status":"live","first_seen_at":"2026-10-16T16:07:32Z","employer_posted_date":"2026-10-16","last_verified_at":"2026-10-17T01:12:11Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"Join a team developing a large-scale cloud-native platform for a leading telecommunications company serving millions of users worldwide. We are looking for a Junior Full-Stack Engineer with strong Python skills and practical experience with React who is eager to grow in a modern engineering environment.\nYou will contribute to a data-intensive product focused on APIs, integrations, and scalable distributed systems while collaborating with international teams in an Agile setup. We at Sigma Software create opportunities for engineers to work with modern technologies, gain mentorship from experienced specialists, and build solutions used in global markets.\nThis role offers hands-on experience with cloud infrastructure, Kubernetes, modern Front-end and Back-end technologies, and enterprise-scale architecture in a supportive and growth-oriented environment.\nCUSTOMER\nOur Customer is a leading Swedish telecommunications company delivering innovative technology solutions across complex infrastructure environments. Operating internationally and serving millions of users, the company focuses on scalable digital ecosystems, cloud-native transformation, and reliable integration between distributed systems.\nPROJECT\nThe project is a Product Information Service - a scalable cloud-native platform designed to manage product-related data and support integration across multiple enterprise systems. The solution enables efficient data management, API development, and seamless interoperability between platforms while ensuring reliability and scalability for large volumes of information.\nThe team develops both Front-end and Back-end components of a modern web-based application and follows Agile practices with close collaboration across engineering and business teams.\nKey Technologies: Python, React, TypeScript, PostgreSQL, Kubernetes, GitLab CI, Microsoft Azure, REST APIs\nContribute to the development and maintenance of Back-end and Front-end components of a data-intensive platform\nAssist in designing and implementing REST APIs and integrations with internal systems\nDevelop and maintain database-related functionality and data processing logic\nWrite and maintain unit and integration tests\nParticipate in code reviews and improve coding practices based on feedback\nCollaborate with developers, QA engineers, and stakeholders in an Agile environment\nParticipate in sprint planning, backlog grooming, estimations, and other Agile ceremonies\nSupport technical documentation and knowledge-sharing activities\nContinuously improve technical skills with mentorship from senior engineers\n 2+ years of professional software development experience with Python\nExperience working with SQL databases, preferably PostgreSQL\nWorking knowledge of TypeScript and React\nUnderstanding of REST APIs and web application architecture\nBasic understanding of cloud infrastructure and application deployment\nFamiliarity with Kubernetes and containerized applications\nBasic knowledge of CI/CD practices and tools such as GitLab CI\nExperience working in Agile development environments\nStrong problem-solving and communication skills\nIntermediate or higher English level\nWILL BE A PLUS\nExperience with Next.js\nExperience with Microsoft Azure, especially AKS\nFamiliarity with MCP and RAG-based systems\nMathematical background\n PERSONAL PROFILE\nEager to learn and develop within a 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