Senior Fullstack Developer (Python+AI+React) (IR-545)

Posted Yesterday
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Hiring Remotely in Ukraine
Remote
Senior level
Consulting • PropTech
The Role
Develop and maintain Python/FastAPI backend services and React frontends, integrate AI features (vector DBs, embeddings, RAG, LLMs), design and consume REST APIs, work with relational databases and document ingestion pipelines, debug across the stack, improve performance/security, and collaborate with product and design to deliver production-ready features.
Summary Generated by Built In

Intellectsoft is a software development company delivering innovative solutions since 2007. We operate across North America, Latin America, the Nordic region, the UK, and Europe.We specialize in industries like Fintech, Healthcare, EdTech, Construction, Hospitality, and more, partnering with startups, mid-sized businesses, and Fortune 500 companies to drive innovation and scalability. Our clients include Jaguar Motors, Universal Pictures, Harley-Davidson, and many more where our teams are making daily impactTogether, our team delivers solutions that make a difference. Learn more at www.intellectsoft.net

Our client is an AI consulting and technology company that helps businesses adopt and scale artificial intelligence solutions, including generative AI, automation, and data-driven applications. The company works with organizations to identify AI opportunities, develop custom AI solutions, and integrate AI capabilities into existing business processes to drive productivity and innovation.

We are looking for a Full Stack Developer to build and maintain modern web applications with a focus on AI-enabled product layers, including vector databases and RAG workflows.


Requirements

Basic:

  • Strong experience with Python backend development.
  • Hands-on experience with FastAPI.
  • Strong working knowledge of React and modern JavaScript.
  • Experience building and consuming REST APIs.
  • Familiarity with relational databases such as PostgreSQL or MySQL.
  • Ability to work with and improve an existing codebase.
  • Strong debugging and problem-solving skills.
  • Basic understanding of authentication, authorization, user flows, and application security.
  • Familiarity with Git-based development workflows.
  • Ability to write clean, maintainable, and scalable code.

AI / Data Science Awareness:

This role requires a basic understanding of vector databases, semantic search, embeddings, RAG workflows, and LLM integration.

  • Vector databases and semantic search.
  • Embeddings and how they are used for retrieval.
  • Retrieval-Augmented Generation workflows.
  • Document ingestion, chunking, and indexing.
  • Connecting backend application logic with LLM-based responses.
  • Debugging and maintaining AI-powered product features.

Nice to have

  • Experience deploying applications on cloud platforms such as AWS, Azure, GCP, Render, or Railway.
  • Familiarity with Docker.
  • Experience with background jobs, queues, or scheduled tasks.
  • Experience working with file uploads, document processing, or search systems.
  • Prior experience with AI, chatbot, analytics, or knowledge-management applications.
  • Understanding of basic data pipelines and ETL workflows.
Responsibilities
  • Develop, maintain, and improve backend services using Python and FastAPI.
  • Build, update, and debug React frontend components.
  • Design, consume, and maintain REST APIs.
  • Work with databases, application logic, and integrations across the stack.
  • Understand and improve existing codebases, architecture, and workflows.
  • Debug issues across frontend, backend, database, and AI-related layers.
  • Support features involving vector databases, embeddings, semantic search, and RAG workflows.
  • Work with existing data pipelines and document ingestion processes.
  • Improve application performance, reliability, security, and maintainability.
  • Collaborate with product, design, and technical stakeholders to translate requirements into working features.
  • Write clean, readable, well-documented, and production-ready code.
  • Participate in testing, deployment, monitoring, and release processes.

Benefits
  • Udemy courses of your choice
  • Team-buildings, events, marathons & charity activities to connect and recharge
  • Workshops, trainings, expert knowledge-sharing that keep you growing
  • Clear career path
  • Absence days for work-life balance
  • Flexible hours & work setup - work from any of listed locations and organize your day your way

Skills Required

  • Strong experience with Python backend development.
  • Hands-on experience with FastAPI.
  • Strong working knowledge of React and modern JavaScript.
  • Experience building and consuming REST APIs.
  • Familiarity with relational databases such as PostgreSQL or MySQL.
  • Ability to work with and improve an existing codebase.
  • Strong debugging and problem-solving skills.
  • Basic understanding of authentication, authorization, user flows, and application security.
  • Familiarity with Git-based development workflows.
  • Ability to write clean, maintainable, and scalable code.
  • Familiarity with vector databases and semantic search.
  • Understanding of embeddings and retrieval for search.
  • Knowledge of Retrieval-Augmented Generation workflows and LLM integration.
  • Experience with document ingestion, chunking, and indexing.
  • Ability to connect backend application logic with LLM-based responses and debug AI features.
  • Experience deploying applications on cloud platforms (AWS, Azure, GCP, Render, Railway).
  • Familiarity with Docker.
  • Experience with background jobs, queues, or scheduled tasks.
  • Experience working with file uploads, document processing, or search systems.
  • Prior experience with AI, chatbot, analytics, or knowledge-management applications.
  • Understanding of basic data pipelines and ETL workflows.
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The Company
HQ: Palo Alto, CA
199 Employees
Year Founded: 2007

What We Do

Intellectsoft is a digital transformation consultancy service that provides cutting-edge engineering solutions for global organizations with the mission to help enterprises accelerate the adoption of new technologies, untangle complex issues that always emerge during digital evolution, and orchestrate ongoing innovation. Intellectsoft has been named as one of the highly-rated software development B2B companies in 2021 by Clutch. Ranked No. 244 by Inc. magazine’s annual Inc. 5000 Regionals 2021, Intellectsoft has become one the nation’s fastest-growing private companies and demonstrated solid revenue growth of 37% over the last two years, fueled by customer’s need for innovative software solutions in the era of digitalization. The Company’s services portfolio offers strategic IT consulting, CX design, development, and full lifecycle management of custom software products and applications, and system integration. Whether it is a consumer-oriented app or a transformative enterprise-class solution, the company leads the process from ideation and concept to delivery and provides ongoing support.

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