Senior Full Stack Developer

instinctools EE Labs; Remote; PLN 254,000 - 339,000; Full time

Job summary

A software development company is looking for a Senior Full Stack Developer (Python+React). This role involves developing features, managing cloud infrastructure, and working with advanced AI initiatives. The ideal candidate has 5+ years of experience, strong skills in Python and React, and familiarity with cloud services. This position offers flexibility and opportunities for learning in a collaborative environment with a focus on innovation.

Benefits

Flexible working time

Professional and ambitious team

Learning opportunities, seminars, and conferences

Co-funding for language courses (English)

Qualifications

• 5+ years of experience in full-stack development.
• Strong proficiency in Python, FastAPI and React.
• Experience with SQL and NoSQL databases, including writing complex queries.
• Hands-on experience with AWS and deploying applications.

Responsibilities

• Develop, enhance, and maintain features in Python and React.
• Automate cloud deployments and manage infrastructure using Terraform.
• Evaluate open-source frameworks for Generative AI pipelines.
• Work with PostgreSQL and OpenSearch for data storage.

Skills

Full-Stack Development

Python

React

AWS

SQL

FastAPI

Terraform

Web Scraping

English (Upper-Intermediate)

Tools

Docker

PostgreSQL

MongoDB

Snowflake

Job description

*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.

*instinctools is looking for a Senior Full Stack Developer (Python+React) for one of our clients.

Location: Poland (remote)

Our Client 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.

Project: You’ll work with our team focused on our internal Firm GenAI initiatives. Our team is distributed across multiple locations, including offices in North America, Europe, and Japan.

Tasks:

• Develop, enhance, and maintain features in Python (FastAPI), React;
• Contribute as an individual contributor across backend and frontend layers environments;
• Automating cloud deployments and managing infrastructure using Terraform and Docker;
• Staying updated on the latest AI frameworks and tools, evaluating them for integration;
• Work with PostgreSQL (including extensions like `pg_vector`) or OpenSearch/ElasticSearch for storing vectorized custom data (e.g., outputs from OpenAI Embedding’s API) in a searchable format to support Retrieval-Augmented Generation (RAG) pipelines.
• Your expertise may extend to leveraging AWS Bedrock as part of building GenAI agents with multi – agent capabilities;
• Evaluate open – source frameworks for Generative AI pipelines but prioritize direct API integrations (e.g., OpenAI API) where they offer greater efficiency compared to frameworks like LangChain;
• Explore multi – agent frameworks such as AutoGen for facilitating conversations between bots.

Our expectations of the ideal candidate:

• 5+ years of experience in full-stack development;
• Strong proficiency in Python, FastAPI and React;
• 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;
• Experience with webscraping;
• Proven ability to design robust APIs and backend services that scale efficiently;
• Hands-on experience with SQL (Postgres, Snowflake) and NoSQL (MongoDB) databases, including writing complex queries, stored procedures, views, and optimizing performance;
• Hands‑on experience with AWS including deploying applications and managing cloud infrastructure;
• 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;
• Upper-Intermediate English (written and spoken).

Nice to have skills:

• Experience with Java;
• Experience with GenAI tools, LLMs: AWS Bedrock, OpenAPI, RAG, MCP;
• Experience with other cloud providers: Azure, GCP.

Soft Skills:

• Readiness to work in a fast changing environment;
• High level of autonomy;
• Proactive and ownership-driven mindset;
• Strong communication skills and ability to work independently in a cross-functional team;
• Collaborative, open to feedback, and focused on shared goals;
• Strong problem-solving skills, especially in ambiguous contexts;
• High attention to detail and code quality;
• Adaptability to shifting priorities and new technologies.

We offer:

• flexible working time;
• professional and ambitious team;
• learning opportunities, seminars and conferences and time for exploring new technologies;
• co‑funding for language courses (English).

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: Official Email Domain: @instinctools.com, Company Website: https://www.instinctools.com. 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. Report it immediately to [e-mail] or your official contact. Your trust and security are our top priorities. For any questions, always verify through our official channels. Thank you for your attention and cooperation.

We will be glad to see you in our team!