Senior/Lead Full-Stack Software Engineer (Python, React, AI)
External Job Boards
Salary undisclosed
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Description
Why Join Exadel
We’re an AI-first global tech company with 25+ years of engineering leadership, 2,000+ team members, and 500+ active projects powering Fortune 500 clients, including HBO, Microsoft, Google, and Starbucks.
From AI platforms to digital transformation, we partner with enterprise leaders to build what’s next.
What powers it all? Our people are ambitious, collaborative, and constantly evolving.
What You’ll Do
- Design, develop, and deliver full-stack applications using Python, FastAPI, React, and TypeScript
- Build and deploy LLM-powered applications to production using RAG, prompt engineering, structured outputs, and OpenAI APIs
- Implement vector and hybrid search solutions and document processing for PDF, Word, and Excel files
- Evaluate, monitor, and improve LLM application quality using Langfuse or similar tools
- Develop and maintain applications on Azure, including app hosting, VMs, and authentication integrations
- Collaborate directly with clients, lead sessions with senior non-technical stakeholders, and communicate progress clearly
- Translate ambiguous business needs into practical technical solutions
What You Bring
- Strong experience with React, TypeScript, and Python, including FastAPI or similar frameworks
- Proven experience delivering at least one LLM-powered application to production
- Hands-on experience with RAG, prompt design, structured outputs, and OpenAI APIs
- Experience with vector or hybrid search and parsing PDF, Word, and Excel documents
- Familiarity with LLM evaluation and observability tools such as Langfuse
- Working knowledge of Azure, including VMs, application hosting, and Entra ID / SSO
- Strong client-facing communication and problem-solving skills
Nice to Have
- MCP server development or Claude / AI agent integrations
- Experience with PII protection, GDPR, and EU data residency, including tools such as Presidio
- Background in finance, private equity, or M&A due diligence
English level
Upper-Intermediate
Legal & Hiring Information
- Exadel is proud to be an Equal Opportunity Employer committed to inclusion across minority, gender identity, sexual orientation, disability, age, and more.
- Reasonable accommodations are available to enable individuals with disabilities to perform essential functions.
- Please note: this job description is not exhaustive. Duties and responsibilities may evolve based on business needs.
- Compensation details are shared with candidates at the early stage of the recruitment process.
- The offer is not binding until a signed contract is in place.
Your Benefits at Exadel
Exadel benefits vary by location and contract type. Your recruiter will fill you in on the details.
- International projects
- In-office, hybrid, or remote flexibility
- Medical healthcare
- Recognition program
- Ongoing learning & reimbursement
- Well-being program
- Team events & local benefits
- Sports compensation
- Referral bonuses
- Top-tier equipment provision
Exadel Culture
We lead with trust, respect, and purpose. We believe in open dialogue, creative freedom, and mentorship that helps you grow, lead, and make a real difference. Ours is a culture where ideas are challenged, voices are heard, and your impact matters.
Benefits
- stock options
About this role
Exadel is looking for a senior full-stack engineer to build production AI applications for enterprise clients including Microsoft, Google, and HBO. You'll work across Python and React, designing and deploying LLM-powered systems that integrate RAG, vector search, document processing, and OpenAI APIs. The role spans the full stack—from backend architecture on Azure to frontend development—with direct client engagement and responsibility for translating business requirements into technical solutions.
This is a contract position based in Poland with hybrid flexibility. You'll need proven production experience shipping at least one LLM application, solid hands-on skills in React, TypeScript, FastAPI, and familiarity with tools like Langfuse for monitoring LLM quality. Experience with vector or hybrid search, PDF/document parsing, and Azure infrastructure is expected. The role also values strong communication skills for working with senior stakeholders and clients.
The nice-to-haves include MCP server development, Claude integrations, and background in finance or due diligence workflows. Exadel offers international project exposure, flexible work arrangements, learning reimbursement, and standard benefits that vary by location and contract type. This suits someone who wants to work on cutting-edge AI products at scale while maintaining direct client relationships.
Pay for this role
The employer didn't post a pay range for this role. That usually means pay is set in negotiation, which favors whoever arrives with numbers. Check ranges on comparable Senior/Lead Full-Stack Software Engineer (Python, React, AI) postings in your area, and analyze any offer before you accept it.
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