Senior Fullstack Developer - C# and React - France

Shift Technology; Paris; Hybride; EUR 50 000 - 70 000; Plein temps

Résumé du poste

A leading AI platform for insurance in Paris is seeking a Senior Fullstack Engineer to develop applications using C# and React. You will work in a collaborative environment, tackling complex technical challenges. The role offers a competitive salary range of €50,000—€70,000 EUR along with flexible working options and various benefits.

Prestations

Flexible remote and hybrid work options

Competitive salary with performance-based variable pay

Company equity

Generous PTO and paid holidays

Mental health benefits

2 MAD Days per year for volunteering

Qualifications

• At least 3 years of experience in software development.
• Solid C# skills.
• Frontend experience with any JS framework, preferably React.
• Strong fullstack development capability.
• Ability to write well-designed and clean code.
• Fluency in English.

Responsabilités

• Build complete designs for applications and features.
• Contribute to a UI for collecting and reviewing information.
• Develop APIs to automate decision-making.
• Collaborate with software engineers, data scientists, and product managers.

Connaissances

C#

React

Curiosity

Proactive ownership

Outils

GitHub

Microsoft Azure

Visual Studio

Description du poste

Shift is the leading AI platform for insurance. Shift combines generative, agentic, and predictive AI to transform underwriting, claims, and fraud and risk - driving operational efficiency, exceptional customer experiences, and measurable business impact. Trusted by the world's leading insurers, Shift delivers AI when and where it matters most, at scale and with proven results.

Our culture is built on innovation, trust, and a drive to transform the insurance industry through our SaaS platform. We come from more than 50 different countries and cultures and together we are creating the future of insurance.

Our Engineering Team lies at the core of the value we offer to our customers. We solve complex problems by working not only within our squads but also collaboratively across the organization. If you are excited by solving complex technical challenges, this is the right place for you!

What you'll do...

As a Senior Fullstack Engineer, your technical knowledge and autonomy will enable you to build complete designs for our applications and features. You will contribute to a UI for collecting and reviewing information, develop APIs that automate decision-making, and build corresponding frameworks. Performance, scalability, and quality are key challenges to address to ensure reliable delivery. You will collaborate with software engineers, data scientists, QA, UX, and product managers to continuously improve our agile development process. We work with modern technologies and encourage exploring new market innovations.

Our tech stack:

• Frontend: React / Redux / TypeScript / Vanilla Extract / LESS / Dev Container with Vite
• Backend: C#, MSSQL, Elasticsearch
• IDE: Your choice - Rider, VS Code, or Visual Studio + Resharper
• Cloud: Microsoft Azure
• Toolchain: GitHub Enterprise, GHAS, GH Copilot + coding agent
• CI / CD: GitHub Actions / TeamCity, Cypress, GH Packages (npm, NuGet), Octopus
• Collaboration: Slack, Jira, Confluence

What you bring...

• At least 3 years of experience in software development
• Solid C# skills
• Frontend experience with any JS framework (preferably React)
• Fullstack capability: frontend and backend development
• Projects that are well-designed and cleanly written
• Curiosity, eagerness to learn, and proactive ownership
• A desire for impactful work: seeing yourself as the engine, not just a cog
• Fluency in English

Recruitment Process

• 30-minute video interview with Talent Acquisition
• 1-hour online test
• Two 1-hour technical interviews (one with a Backend and one with a Frontend developer)
• 1-hour final interview with the Hiring Manager

LI-RH1 #LI-HYBRID #LI-REMOTE

The listed range is for base salary. Actual salary will vary based on location and qualifications assessed during the interview.

In addition to base salary, the total rewards include incentive pay, equity, and benefits. Discuss specifics with your Talent Acquisition Partner.

Base Salary Range: €50,000—€70,000 EUR

Our benefits include:

• Flexible remote and hybrid work options
• Competitive salary with performance-based variable pay
• Company equity
• Focus Fridays: half-day each month for learning and growth
• Generous PTO and paid holidays
• Mental health benefits
• 2 MAD Days per year for volunteering

Additional benefits may vary by country. Intern and Apprentice positions are eligible for some benefits. Contact your recruiter for details.