Senior Fullstack Engineer

*instinctools is a software development company that provides custom software solutions for businesses of all sizes. Our team works closely with clients to understand their specific needs and provide personalized solutions that meet their business requirements.

Our team is looking for a Senior Fullstack Engineer (Python+React) for one of our clients.

Our customer is one of the TOP-5 global management consulting firms considered to be among the most prestigious ones in the world. Hundreds of customers from Fortune-500, including the largest global financial institutions, the world’s top media companies, technology companies and federal government agencies rely on our Client’s proven platform and services.

Location: Poland Working time zone: CET

Our expectations of the candidate:

• At least 5 years of professional software engineering experience.
• Experience with backend Python (FastAPI)
• Familiarity or proficiency in React
• Experience with webscraping
• Practical experience with the AI/LLM stack (LangChain, LangGraph, Agents)
• Hands-on experience with AWS, Azure, or Google Cloud, including deploying applications and managing cloud infrastructure
• Preferably, experience with: AWS Bedrock, AWS AgentCore, other AWS AI services
  Actively uses modern AI development tools( e.g., Cursor, Claude Code, OpenAI, Codex)
• Hands-on experience with SQL (Postgres, Snowflake) and NoSQL (MongoDB) databases, including writing complex queries, stored procedures, views, and optimizing performance
• Familiarity with cloud-native architectures, including serverless computing, microservices, and containerized deployments (Docker)
• Experience following cloud deployment best practices, leveraging infrastructure as code (Terraform) and troubleshooting cloud environments
• Proven ability to design robust APIs and backend services that scale efficiently
• Ability to define user interfaces, components, and data structures to meet specified requirements
• Capable of quickly ramping up on new frontend frameworks and delivering quality output

Responsibilities and tasks:

• Develop, test, debug, and maintain application code using Python for Generative AI solutions.
• Deploy, configure, and manage applications on AWS, including resource provisioning, infrastructure as code (IaC), and performance and cost optimization.
• Design and support Retrieval-Augmented Generation (RAG) pipelines using PostgreSQL  and/or OpenSearch/ ElasticSearch for storing and querying vectorized data.
• Integrate and work with AI platforms and APIs, including OpenAI APIs and AWS Bedrock, to build scalable Generative AI applications and agents.
• Evaluate and implement Generative AI frameworks and tools, prioritizing efficient direct API integrations when appropriate.
• Research and develop multi-agent AI solutions using frameworks such as AutoGen and similar technologies.
• Troubleshoot application, infrastructure, and integration issues, ensuring high availability, reliability, and optimal system performance.
• Collaborate with cross-functional and geographically distributed teams across North America, Europe, and Latin America to deliver impactful AI-driven solutions.

We offer:

• flexible working time;
• professional and ambitious team;
• transparent system of professional and career development;
• learning opportunities, seminars and conferences and time for exploring new technologies;
• the opportunity to realize your potential outside the projects: we arrange meetups and conferences where our staff can perform, develop professional communities;
• full remote work;
• co-funding for language courses  (English).

Join us and be part of a team that is changing the world through technology.

Important Notice Regarding Your Personal Data Security

At *instinctools, we take the security of your personal data very seriously. Please be informed that all official communication, offers, and correspondence from *instinctools are conducted only through our verified company resources, including:

Important Reminder:
*instinctools will NEVER ask for sensitive personal or financial information, including:
– Bank account details
– Credit/debit card numbers
– Passwords or PINs

If you receive any suspicious requests claiming to be from *instinctools via unofficial channels (e.g., personal emails, social media DMs, or phone calls), please:

– Do not respond or share any information.

Your trust and security are our top priorities. For any questions, always verify through our official channels.

Thank you for your attention and cooperation.