Senior Software Engineer (Python + AI)
Bonapolia
- Location
- Onsite (Warszawa, Masovian Voivodeship · Tbilisi, Masovian Voivodeship · Tashkent, Masovian Voivodeship · Yerevan, Masovian Voivodeship · Baku, Masovian Voivodeship · +6 more)
- Employment
- Contract
- Level
- Senior Level
About the Role
Bonapolia is staffing a Senior Software Engineer for a Big Four accounting firm to design and develop scalable Python applications and AI-driven tools. The role involves integrating multimodal GenAI models and leading technical initiatives within a dynamic engineering team.
Skills
Full job details
We are looking for a motivated Senior Software Engineer (Python + AI) who is willing to dive into the new project with a modern stack. If you’re driven by a curiosity to learn and a desire to produce meaningful results, please apply!
About the Client
Our client is one of the Big Four accounting firms and the world’s largest professional services network. Headquartered in London, they operate in 150+ countries with 460,000+ professionals delivering excellence in audit, tax, consulting, and advisory.The team you will join designs, develops, and deploys innovative enterprise technology and AI-driven tools to support the delivery of tax services. It is a dynamic group combining expertis in tax, software engineering, change management, and project management, working on initiatives from tool design and deployment to training development and engagement management.
Project Tech Stack
Azure Cloud, Microservices Architecture, .NET 8, ASP.NET Core services, Python, MongoDB, Azure SQL, Angular 18, Kendo, GitHub Enterprise with Copilot, LangGraph, LangChain, RAG Pipelines, Multi-modal LLMs
What You’ll Do
Providing requirements analysis, system design, Python and AI development, troubleshooting, performance optimization, and technical support
Designing, developing, and maintaining scalable Python applications using FastAPI and Pydantic
Implementing asynchronous and parallel programming solutions with asyncio
Conducting thorough code reviews to ensure adherence to established guidelines and maintain high code quality
Integrating and experimenting with multi-modal GenAI models (text-to-image, text-to-audio, etc.)
Working both independently and collaboratively within the team
Providing clear instructions to team members and helping coordinate day-to-day operations
Communicating with the client on a regular basis
Providing technical leadership for the team – mentor, coach, and lead by example
What You Bring
5+ years of background in development
Strong background in Python, FastAPI
Experience with Pydantic for data validation and schema definition in Python applications
Hands-on experience with asyncio, asynchronous/parallel programming
Experience with Generative AI and Large Language Models (LLMs) to solve real-world problems and in developing agentic AI applications to enhance AI interaction
Understanding of RAG pipelines and hybrid search with vector databases
Strong analytical and problem-solving abilities with a detail-oriented mindset
Pragmatic approach to balancing process against flexibility in achieving objectives
Excellent organizational skills, including the capacity to self-manage, structure work, set priorities, and work to deadlines
Excellent troubleshooting and communication skills
Nice to have
Experience working with Azure Cloud services (or other major cloud platforms),
including a range of SaaS offerings such as Service Bus, Data Lake, Blob Storage, Redis,and more
Familiarity with agentic protocols such as MCP and A2A is a strong plus
Hands-on experience with the LangGraph stack, including long-term memory, human-in-the-loop workflows, and state management, is highly desirable
Familiarity with .NET is considered a plus
Hands-on experience with containerization and orchestration tools such as Docker and Kubernetes
Solid understanding of microservices architecture and its implementation in scalable systems
English level Intermediate+
What we offer
Model: B2B contract with Bonapolia - one contract, one monthly invoice
Rate: negotiated per candidate seniority and client budget
Payment: monthly invoice, paid on the same schedule the client pays us (usually 30 days)
Contract written under your country's law
We handle the client-side paperwork: MSA, NDA, invoicing
🏢 About Bonapolia
Bonapolia is a family-owned IT staff augmentation team based in Lisbon. We build engineering teams for product companies and IT consultancies across Europe and the US.
More at bonapolia.com
📩 Ready to Join?
We look forward to receiving your application and welcoming you to our team!