Senior Full-Stack (.NET + React) Developer

On-siteSalary not specified
Poland · Croatia

Job Description, Responsibilities & Requirements

About the Position

ELEKS Software Engineering and Development Office is looking for a Senior Full-Stack (.NET + React) Developer in Poland, Croatia, or EU.


About the Project

Our client is one of the largest British-American insurance brokers globally, specializing in risk management, insurance and reinsurance brokerage, and investment banking solutions.


Responsibilities

  • Design, develop, and maintain reliable software in line with technical requirements
  • Analyze requirements, and independently estimate and set up tasks’ acceptance criteria
  • Evaluate and coordinate tasks’ deadlines with the Technical Leader or Project Manager
  • Apply the best software development practices and coding standards to produce high-quality and performant solutions
  • Stay up-to-date with modern technology and, optionally, obtain professional certifications
  • Participate as a trainer or a trainee in various learning programs outside the main project

Requirements

  • 4+ years of experience with C#,.NET Core, .NET Framework.NET 8
  • 3+ years of experience with React and JavaScript
  • Experience with Azure native microservices architecture & Azure services (key vault, AKS, storage queue, service bus, Azure Functions, event hub, AKS, App config)
  • Security protocols: OAuth 2.0 (OKTA)
  • Experience with containers Kubernetes, Docker
  • Hands-on experience in building RESTful APIs based on the minimal API approach
  • Good knowledge of CI/CD based on DevOps services, IaC Terraform
  • Hands-on experience in Unit Testing using XUnit / NUnit
  • Following DDD (Data Driven Design)
  • Understanding the canonical APIs approach
  • Experience with databases (MS SQL, Redis Cache, Memory Cache)
  • Understanding API management, Datadog
  • At least Upper-Intermediate level of English

Nice to Have

  • Experience with cloud-native services such as SignalR, Functions
  • Cache technologies (Redis cache, etc.)

What You Will Get with ELEKS

  • Close cooperation with a customer
  • Challenging tasks
  • Competence development
  • Ability to influence project technologies
  • Team of professionals
  • Dynamic environment with low level of bureaucracy

About ELEKS

ELEKS is a custom software development company. We deliver value to our clients, thanks to our expertise and experience gained from working as a software innovation partner since 1991.

Our 2000+ professionals located in the Delivery Centers across Eastern Europe and sales offices in Europe and North America, provide our clients with a full range of software engineering services. These include product development, QA, R&D, design, technology consulting, and dedicated teams.

Job Details

Company name:
Eleks
Location:
Poland · Croatia
Employment Type:
Full-time
Work Mode:
On-site
Posted on TheJob:
Jun 30, 2026
Last checked:
Jun 30, 2026
Posted on the source:
Jun 4, 2026
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