{"id":40898,"url":"https://alion.io/job/itds-senior-full-stack-developer-python-ai-react","title":"Senior Full-Stack Developer - Python, AI & React","company":{"id":879,"name":"ITDS Poland","domain":"itds.pl","url":"https://alion.io/company/itds","size_band":"201-500","is_staffing_agency":false,"employer_type":"staffing","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","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":{"min":21244,"max":31473,"currency":"PLN","period":"month","gross":null,"usd_annual":100956},"salary_estimate":null,"experience_years_min":6,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"AWS","optional":false},{"name":"CI/CD","optional":false},{"name":"Claude","optional":false},{"name":"Cypress","optional":false},{"name":"Django","optional":false},{"name":"Docker","optional":false},{"name":"Edge AI","optional":false},{"name":"FastAPI","optional":false},{"name":"Flask","optional":false},{"name":"GCP","optional":false},{"name":"Git","optional":false},{"name":"GraphQL","optional":false},{"name":"JavaScript","optional":false},{"name":"Jest","optional":false},{"name":"LangChain","optional":false},{"name":"LlamaIndex","optional":false},{"name":"LLM","optional":false},{"name":"Next.js","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Prompt Engineering","optional":false},{"name":"Pytest","optional":false},{"name":"Python","optional":false},{"name":"RAG","optional":false},{"name":"React Query","optional":false},{"name":"React.js","optional":false},{"name":"Redux","optional":false},{"name":"Rest API","optional":false},{"name":"State Management","optional":false},{"name":"styled-components","optional":false},{"name":"Tailwind CSS","optional":false},{"name":"TypeScript","optional":false}],"status":"live","first_seen_at":"2026-08-05T11:03:28Z","employer_posted_date":null,"last_verified_at":"2026-08-05T11:03:28Z","board_verified":false,"closed_at":null,"days_open":55,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":55},"description":"Unleash innovation at scale - shape the future of AI-driven financial platforms.\nLocation & Work Model: Remote-based opportunity with flexibility to work from Poland or Portugal, up to 5 days per week.\nAs a Senior Full-Stack Developer, you will be working for our client, a leader in capital markets technology, delivering cutting-edge AI and web solutions. You will build and maintain high-performance applications that integrate modern React front ends with Python back ends, empowered with AI/LLM features to revolutionize financial data processing and decision-making. Join us and contribute to shaping innovative financial ecosystems.\nYour main responsibilities:\nDesign and develop end-to-end features, including React/Next.js interfaces and Python back-end services and APIs.\n\nImplement, maintain, and optimize AI/LLM-powered functionalities such as RAG pipelines, agentic workflows, and API integrations.\n\nBuild responsive, accessible user interfaces from design specifications to production deployment.\n\nWrite clean, well-tested, and maintainable code across both front-end and back-end layers.\n\nDesign and implement REST/GraphQL APIs and data models for complex financial and market data.\n\nCollaborate with cross-functional teams including designers, data/ML engineers, and product managers to deliver features end-to-end.\n\nOptimize applications for performance, scalability, security, and cross-browser compatibility.\n\nParticipate in code reviews and contribute to engineering standards and best practices.\n\nLeverage AI-assisted development tools to accelerate delivery and enhance code quality.\n\nYou're ideal for this role if you have:\nMinimum of 6 years of experience in full-stack development, with a focus on Python and JavaScript.\n\nStrong expertise in React, TypeScript, and modern JavaScript (ES6+).\n\nProven experience with back-end frameworks such as FastAPI, Django, or Flask.\n\nSolid understanding of REST API design, asynchronous data handling, and front-end best practices.\n\nFamiliarity with HTML5, CSS3, and responsive UI design.\n\nKnowledge of relational and NoSQL databases like PostgreSQL and MongoDB.\n\nStrong grasp of Git and collaborative development workflows.\n\nGood understanding of web security, performance, and accessibility fundamentals.\n\nIt is a strong plus if you have:\nProduction experience with Next.js (SSR, SSG, API routes).\n\nHands-on experience building or integrating AI/LLM features (e.g., prompt engineering, vector databases, LangChain, LlamaIndex).\n\nExperience working with Claude and other AI solutions.\n\nFamiliarity with state management libraries (Redux, React Query, etc.).\n\nKnowledge of CSS frameworks like Tailwind or styled-components.\n\nExperience with cloud deployment, infrastructure (AWS, GCP), Docker, and CI/CD pipelines.\n\nTesting expertise with Pytest, Jest, React Testing Library, or Cypress.\n\nLanguage Required for the role:\nFluent command of English.\n\nEligibility to work on this role:\nOnly candidates with an existing legal right to work in the European Union will be considered.\n\n#MAKEYourCareerBETTER\nInterested? Apply now and include your CV (preferably in English), along with a statement confirming your consent to the processing and storage of your personal data.","description_format":"text","description_chars":3229,"description_truncated":false,"requirements":{"experience_years_min":6,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"Poland","iso":"PL","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Artificial Intelligence","IT Consulting & Digital Transformation","IT Staffing & Staff Augmentation"],"lifecycle":[{"event":"open","at":"2026-08-05T11:03:28Z"}],"liveness":{"score":19,"band":"cold","label":"Long shot","p_open":0.4,"p_active":0.848,"p_room":0.55,"age_days":54,"expected_fill_days":42,"reasons":["seen:54","velocity","win:tail"],"computed_at":"2026-09-29T05:45:00Z"},"pay":{"stated_usd_annual":100956,"is_top_pay":false},"html_url":"https://alion.io/job/itds-senior-full-stack-developer-python-ai-react","json_url":"https://alion.io/job/itds-senior-full-stack-developer-python-ai-react.json","meta":{"generated_at":"2026-09-30T01:33:15Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":1159,"day_limit":5000,"remaining_today":3841,"minute_limit":60,"resets_at":"2026-10-01T00:00:00Z"}}}