Eleks8d ago

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Senior Full-Stack (.NET + React) Developer, Technical/ Team Lead, (insurance, Zor.)

(europe)Consultantsenior

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Quick Summary

Overview

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

Technical Tools

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

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

7+ years of backend/API development experience, including 4+ years with modern .NET (.NET 7/8/9, ASP.NET Core, experience with .NET 10 is a plus)

3+ years of experiece with React

Strong C# fundamentals: async/await, LINQ, dependency injection, middleware, and SOLID/clean architecture

Proven experience building production REST APIs: versioning, authentication/authorization, error handling, pagination/filtering, and OpenAPI/Swagger documentation

Experience with Azure native microservices architecture & Azure services (AI search, key vault, AKS, storage queue, Azure Functions, event hub, APIm)

Security protocols: OAuth 2.0 (OKTA)

Experience with Kubernetes, Dockers

Hands-on experience in building RESTful APIs based on API management

Good knowledge of CI/CD based on DevOps services, Terraform

Hands-on experience in Unit Testing using XUnit / Nunit

Minimal API standard knowledge

ORMs: EF6

Following DDD (Data Driven Design)

Understanding the canonical APIs approach

Experience with databases (CosmosDB, MS SQL,, etc.)

Understanding APMs

Experience in regulated or high-scale environments with reliability/SLA ownership

Prior technical leadership (driving standards, architecture decisions, onboarding junior developers)

At least Upper-Intermediate level of English

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

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.

Location & Eligibility

Where is the job

(europe)

Hybrid — some on-site time required

Who can apply

Same as job location

Listing Details

Posted: June 2, 2026
First seen: June 10, 2026
Last seen: June 10, 2026

Posting Health

Days active: 0
Repost count: 0
Trust Level: 47%
Scored at: June 10, 2026

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Eleks

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ELEKS is a global software development company that provides full-cycle engineering outsourcing services across various industries, specializing in custom software, data science, and technology consulting.

Employees

3k+

Founded

1991

Domain

Jobs

External application · ~5 min on Eleks's site

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