Full Stack Developer

2 недель назад

Львов, Львовская область, Украина Perfsol Полный рабочий день 900 000 ₴ - 1 200 000 ₴ в год

Our client is looking for a Full Stack Developer to join their team. This role requires someone with strong technical expertise, excellent coding standards, and the ability to work on challenging problems in AI-driven applications.

The product is a personal AI knowledge base that allows users to chat with the online content they save across the internet — YouTube videos, podcasts, articles, PDFs, and more. The team has built its own Retrieval-Augmented Generation (RAG) system to power this chat feature, leveraging best practices like vector search, full-text search, and reranking. Despite these advancements, they're still facing challenges in retrieving the most relevant context for user queries, and this is where your expertise will make a big impact.

Responsibilities:

  • Design, develop, and maintain scalable full-stack applications using React, TypeScript, , and Python
  • Collaborate closely with the product and AI/ML teams to improve retrieval systems and enhance user experience
  • Ensure high code quality standards, implementing best practices for testing, performance, and maintainability
  • Work on optimizing data pipelines and integrating backend services with AI models
  • Troubleshoot, debug, and resolve complex issues across the stack

Requirements:

  • Strong experience (4+ years) with React, TypeScript, , and Python
  • Proven track record of building and deploying production-grade applications
  • Deep understanding of software architecture, performance optimization, and clean code principles
  • Experience working with databases, search systems (vector search, FTS), and APIs
  • Familiarity with AI/ML concepts, RAG systems, or knowledge bases is a big plus
  • Excellent problem-solving skills and attention to detail
  • Strong communication skills and ability to collaborate in a distributed team

Nice to Have:

Experience with AWS or other cloud platforms

Knowledge of LangChain, LlamaIndex, or similar frameworks

Background in information retrieval, NLP, or large-scale data systems

We offer:

  • Flexible working hours.
  • Remote work model.
  • 18-days paid vacation; 5 days paid sick leave, 11 state holidays.
  • Accounting support.
  • Professional development and well-being (English/professional courses/sports are partially compensated by the company).
  • The agile approach to management and no bureaucracy;
  • Participation in specialized conferences, training programs, and seminars.
  • Compensation for subscriptions to copilots such as Cursor or other similar tools.

  • Senior Full-Stack developer

    2 недель назад

    Львов, Львовская область, Украина EnimSoft Полный рабочий день 400 000 ₴ - 1 200 000 ₴ в год

    We are looking for a Sinior Full Stack Developer with good knowledge of Python and Go. As part of our team, you will be involved in developing robust backend systems and user-friendly frontend interfaces. Your responsibilities will include designing, coding, testing, and deploying applications while ensuring high performance and scalability.Key...

  • Senior Full-Stack Developer

    1 неделя назад

    Львов, Львовская область, Украина Abto Software Полный рабочий день 250 000 ₴ - 500 000 ₴ в год

    Project OverviewA case management system that allows Pharma companies to manage the sale and distribution of new products. It's largely a CRM for the sales reps of pharma to track patient enrollments through clinician offices. The app has an "Intake" section where it has to digest faxed and email docs and queue them up for data entry, with the key entry...

  • Full-Stack Developer

    1 неделя назад

    Львов, Львовская область, Украина skillreveal Полный рабочий день 40 000 ₴ - 80 000 ₴ в год

    We are GPTinf, a team building products that are already used by millions worldwide. Rapid growth, new releases every month, and an atmosphere of drive and shared creativity's who we are. We are looking for a Full-Stack Developer with expertise in to strengthen our technical team. What You Will Do:Develop and scale a full-stack web application...

  • Full-Stack Developer

    3 дней назад

    Львов, Львовская область, Украина skillreveal Полный рабочий день 60 000 ₴ - 120 000 ₴ в год

    Who We Are: We are building products that are already used by millions worldwide. Rapid growth, new releases every month, and an atmosphere of drive and shared creativity's who we are. We are looking for a Full-Stack Developer with expertise in  to strengthen our technical team.What You Will Do:Develop and scale a full-stack web application using 15...

  • Middle Full-Stack Developer

    1 неделя назад

    Львов, Львовская область, Украина Exoft Полный рабочий день 40 000 ₴ - 60 000 ₴ в год

    Lviv, Ukraine · Engineering · HybridJob OverviewExoft is looking for a Middle Full-Stack Developer to join a long-term product in the property and tax domain. The platform helps professionals manage and analyze property-related data, automating document workflows, improving reporting, and streamlining decision-making processes. You'll work directly with...

  • Full-Stack Developer

    2 недель назад

    Львов, Львовская область, Украина ABTO Software Полный рабочий день 40 000 ₴ - 80 000 ₴ в год

    About the ProjectWe are building a lightweight web platform to modernize how civil and environmental engineers manage and analyze time-series sewer flow monitoring data.This Minimum Viable Product (MVP) will replace fragmented spreadsheets and ad-hoc scripts with an integrated, low-code web tool for ingesting, validating, editing, and visualizing flow and...

  • Full-Stack Developer

    2 недель назад

    Львов, Львовская область, Украина Abto Software Полный рабочий день 40 000 $ - 80 000 $ в год

    About The ProjectWe are building alightweight web platformto modernize how civil and environmental engineers manage and analyzetime-series sewer flow monitoring data.ThisMinimum Viable Product (MVP)will replace fragmented spreadsheets and ad-hoc scripts with an integrated,low-code web toolfor ingesting, validating, editing, and visualizing flow and...

  • Middle Full-stack

    1 неделя назад

    Львов, Львовская область, Украина Capgemini Engineering Полный рабочий день 60 000 ₴ - 120 000 ₴ в год

    At Capgemini Engineering, the world leader in engineering services, we bring together a global team of engineers, scientists, and architects to help the world's most innovative companies unleash their potential. From autonomous cars to life-saving robots, our digital and software technology experts think outside the box as they provide unique R&D and...

  • Full Stack PHP

    5 дней назад

    Львов, Львовская область, Украина GONSER AG Полный рабочий день 40 000 ₴ - 100 000 ₴ в год

    Full Stack PHP (Laravel + ) DeveloperGonser AGis looking for an experienced and motivatedFull Stack Laravel + Developerto join our team for a full-time, long-term, remote (OR possibly hybrid with some dedicated work in the beautiful office in Lviv) position.Career pathYou will be working on our well-established online e-commerce platform that has been a...

  • Senior Full Stack

    5 дней назад

    Львов, Львовская область, Украина N-iX Полный рабочий день 90 000 $ - 120 000 $ в год

    We are looking for aSenior Full Stack Java + React Developerto join our team and contribute to the evolution of a large-scale platform for a US-based B2B company. This is a senior-level role for an experienced engineer who can own end-to-end feature delivery—from backend architecture to frontend implementation—in a modern, cloud-native environment.Key...