Senior Software Engineer

Complexio, Warsaw, Poland

What our tracking knows about this posting

Published on 24 September 2025 · first appeared in our records on 21 September 2026.

Stable posting: first seen on 21 September 2026, with no abnormal reposting.

This posting shows no salary, while 12% of open postings in the same sector in this country (Poland) do.

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Complexio’s Foundational AI platform automates business processes by ingesting and understanding complete enterprise data—both structured and unstructured. Through proprietary models, knowledge graphs, and orchestration layers, Complexio maps human-computer interactions and autonomously executes complex workflows at scale. Established as a joint venture between Hafnia and Símbolo—with partners including Marfin Management, C Transport Maritime, BW Epic Kosan, and Trans Sea Transport—Complexio is redefining enterprise productivity through context-aware, privacy-first automation. The project focuses on enhancing business processes through the use of artificial intelligence and advanced technologies. It enables intelligent data handling and supports automated decision-making. Built with modern, high-performance solutions, it ensures efficiency, security, and scalability. Qualifications • 5+ years  of experience in  software development . • Strong experience with  Python. • Experience with  vanilla JavaScript. • Experience with  relational databases  (PostgreSQL) and  KV stores  (Redis). • Experience in  cloud platform  (Azure / AWS / GCP). • Experience with  CI/CD pipelines  and tools like  GitHub Actions . • Strong understanding of  event-driven systems  and distributed architectures. • Experience with containerization tools ( Docker  / Podman) and orchestration platform (Kubernetes). • English min B2. Nice to have • Experience with  graph databases  (Neo4j) and  vector databases  (Milvus). • Experience with  NLP libraries and frameworks  (spaCy / Transformers). • Proficiency in compiled languages (Rust, Go, Java, C#). • Experience with  machine learning concepts  and the ability to work with NLP datasets. • Experience in building  web applications  using modern frameworks (React, Vue.js) or  desktop applications  (Electron, Tauri).

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