Posted 1 day ago
Middle Python Developer (ML)
AI Summary
Design, build, and optimize LLM-powered features and RAG pipelines for intelligent search and knowledge graph platforms in a telecommunications AI initiative.
About this role
Middle Python Developer (ML)
You will join one of two AI initiatives: ChatCPI, an LLM-powered assistant for intelligent search and question answering over large technical documentation, or a Knowledge Graph Platform focused on structuring and connecting enterprise information for AI-driven use cases.
CUSTOMER
Our Customer is a leading Swedish telecommunications company recognized for delivering innovative large-scale technology solutions across complex infrastructure environments. The company operates internationally, serving millions of users and working with global technology leaders to drive digital transformation in the telecommunications industry.
PROJECT
You will join one of two AI initiatives: ChatCPI, an LLM-powered assistant for intelligent search and question answering over large technical documentation, or a Knowledge Graph Platform focused on structuring and connecting enterprise information for AI-driven use cases.
Technologies: Python, LLMs, RAG, vector embeddings, hybrid search, knowledge graphs.
- Design and implement LLM-based features and RAG pipelines from data ingestion to answer generation
- Build and optimize retrieval using vector embeddings and hybrid semantic and keyword search
- Process, clean, and structure source information to improve the accuracy and relevance of AI-generated output
- Evaluate model quality, experiment with new approaches, and bring proven solutions into production
- Work closely with the team to integrate AI components into the wider platform
- Own changes end-to-end, including design, implementation, testing, and deployment
- Work independently while proactively communicating blockers, scope questions, and technical trade-offs
Qualifications
- 3+ years of commercial software development experience
- 2+ years of experience working on AI/ML projects
- Good Python skills with hands-on implementation experience
- Practical experience with LLMs and modern AI technologies
- Practical experience with RAG architecture, vector embeddings, and hybrid search
- Experience with information processing aimed at improving AI quality, including data preparation, chunking, metadata enrichment, and relevance tuning
- Ability to work independently and take ownership of tasks from design through deployment
- Upper-Intermediate English
WILL BE A PLUS
- Experience with knowledge graphs or graph databases
- Background in the telecommunications domain
Skills
Explore related jobs
More jobs at Sigma Software
- SSenior/Principal Full Stack Engineer (Automotive)Warsaw, Masovian Voivodeship
- SSenior C++ Engineer (Desktop Applications)Warsaw, Masovian Voivodeship
- SBusiness Development Manager (AI Products and Solutions)Stockholm, Sweden
- SSenior Data ScientistWarsaw, Masovian Voivodeship
- SMiddle/Senior Java DeveloperMalmö, Skåne County
- SMiddle Typescript/Node.js Developer with AI experience (AdTech)Kyiv, Kyiv city
Similar Python jobs
- ADirector / MTS, Heaters and Electrostatic Chuck (ESC)asm · US > Arizona > Phoenix
- A(Senior) Principal Engineer, Heaters and Electrostatic Chuck (ESC)asm · US > Arizona > Phoenix
- APrincipal Engineer, Systems Engineering (Systems and Mechanical Engineering – Electrostatic Chuck (ESC))asm · US > Arizona > Phoenix
Jobs in Warsaw
- EAsystent Projektanta / Asystentka Projektantki w branży mostowejEgis Group · Warsaw, Masovian Voivodeship
- EAsystent / Asystentka projektanta - geotechnikaEgis Group · Warsaw, Masovian Voivodeship
- ESales Operations Business Partner (METCA)Everpure · Istanbul, Turkey
- CMarketing Communications ManagerCustoms Support Group · Warsaw, Mazowieckie
- CTrade Operations Specialist – Brokerage ManagementCustoms Support Group · Warsaw, Mazowieckie
Browse these categories
Market data for this role
All reports →- SeriesRole reportsOne role family at a time: how many openings, what changed this week, who is hiring, what it pays.
- SeriesSalary reportsWhat employers publish in job postings, by level and workplace. Not self-reported pay.
- Market overviewState of tech hiring, September 2026: up 4.8%Tech hiring rose 4.8% month over month in September 2026, with 411,122 new listings. Customer support and account executive roles led the growth.