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senior

Full Stack Engineer

Sombra
format:Remotecompany:Outsource
c#.nettypescriptreactmicrosoft sql serverpostgresqlentity framework corereduxazure
openaisemantic kernellangchain
experience5+ years
locationLviv, Ukraine
> full description

You’ll work on enterprise platforms that help organizations manage digital content and streamline marketing and communications workflows. The role combines full-stack development with an AI-first approach, including Generative AI integrations, semantic search, RAG, and AI agents designed to improve content creation, delivery, and operational processes.

Required for this role

  • 5+ years of commercial software development experience.
  • Strong expertise in C#, .NET 8+, ASP.NET Core, and Web API.
  • Solid experience with TypeScript and the modern React ecosystem.
  • Hands-on experience building and consuming RESTful APIs and microservices.
  • Strong knowledge of SQL Server, PostgreSQL, and Entity Framework Core.
  • Advanced knowledge of React Hooks, Context API, and state management solutions such as Redux or Zustand.
  • Experience with modern frontend architecture, reusable component design, responsive interfaces, design systems, and performance optimization.
  • Practical experience integrating Generative AI capabilities using services or frameworks such as Azure OpenAI, OpenAI APIs, Semantic Kernel, or LangChain.
  • Understanding of LLMs, RAG, prompt engineering, AI agents, vector databases, semantic search, Microsoft Azure, CI/CD pipelines, Git-based workflows, DevOps practices, and Agile/Scrum environments.

Your responsibilities

  • Design, develop, and maintain scalable full-stack applications using .NET, C#, TypeScript, and React.
  • Build and enhance enterprise web platforms, APIs, and integrations with a focus on performance, security, and maintainability.
  • Identify opportunities to embed AI-powered capabilities into products, user workflows, and operational processes.
  • Design and implement integrations with LLMs, AI agents, semantic search, and RAG solutions.
  • Collaborate with a designer, architect, and business stakeholders to translate requirements into technical solutions and contribute to architecture decisions.
  • Develop and optimize cloud-native solutions hosted on Azure, including deployment and infrastructure-related activities.
  • Maintain application quality through automated testing, code reviews, troubleshooting, and engineering best practices.
  • Mentor engineers, share technical knowledge, contribute to CI/CD improvements, and use AI-assisted development tools to improve code quality and delivery efficiency.

What you get

Your time off

  • 18 paid vacation days and 10 paid sick days annually
  • 10 Ukrainian public holidays
  • Maternity and paternity leaves
  • Marriage and Parenthood Package
  • Additional leave for major life events
  • Sabbatical leave opportunities

Learning & growth

  • Sombra University workshops and internal learning programs
  • Tech Communities and knowledge sharing sessions
  • Language courses and workshops
  • Mentorship opportunities

Health & well-being

  • Sports compensation or health insurance coverage
  • Participation in races and marathons
  • Corporate doctor (telemedicine)
  • Well-being initiatives and workshops

And even more

  • Company-provided technical equipment
  • PE administration and tax support
  • Internal referral program
  • IT Club loyalty program
  • Company events and volunteering initiatives

Before you apply

Our recruitment team will carefully review your profile, and if we see a good match with the role, we’ll reach out to you shortly.

If you don’t hear from us within 5 business days, it means we’ve decided to continue the process with other candidates for this position. Thanks for understanding.

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