Fullstack Developer (Développeur / Ingénieur Logiciel Confirmé)

Reposted 5 Days Ago
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Paris, Île-de-France, FRA
In-Office
Mid level
Artificial Intelligence • Information Technology • Insurance • Machine Learning • Software • Automation
The Role
As a Fullstack Engineer at Shift, you will design and implement scalable applications and features, collaborate with teams, address technical challenges, and ensure high-quality solutions throughout the software lifecycle.
Summary Generated by Built In

Shift delivers AI agents that transform insurers' most critical work. By combining deep industry expertise and unmatched data resources, Shift provides proven results that have earned the trust of hundreds of the world's leading insurers. Our insurance-grade AI is accurate, explainable, and secure—empowering human experts to move with unmatched speed, total confidence, and a renewed focus on the people they serve.


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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.

Learn more at www.shift-technology.com


 

As a Fullstack Engineer, you will join our core Engineering team to build complete designs for applications and features that deliver direct value to our customers. You will solve complex technical challenges by working within your squad and collaborating across the organization with Data Scientists, QA, and Product Managers. Your focus will be on delivering high-performance, scalable, and quality solutions that modernize our platform. This role is essential for driving the technical migrations and architectural improvements that power Shift’s mission.

What Your Impact Looks Like

At Shift, we value ownership from day one. In this role, you will:

  • Jump In & Own It: 
    • Take full ownership of technical tasks and resolve delivery blockers promptly without waiting for direction.
    • Design and implement intuitive user interfaces to collect and review information.
    • Build and maintain robust APIs that automate decision-making processes.
  • Simplify the Complex: Design, write and test (from unit to end-to-end) clear, clean, well-structured C# and React code that is easy for others to maintain. 
  • Test, Learn, Scale: 
    • Contribute to technical migrations, modernization efforts, and architectural improvements as our platforms evolve.
    • Experiment with new frameworks and use retrospectives to identify opportunities to improve delivery speed and quality.
  • Communicate with Impact: Share progress and technical trade-offs clearly during stand-ups, adapting the detail for both peers and stakeholders.
  • Solve Without Drama: Address production incidents and bugs calmly and methodically, focusing on root causes and long-term solutions.
  • Finish what you start: Demonstrate reliability by validating that all code meets user needs and is fully documented before moving to new work.

We work with modern technologies and always encourage our team to explore what’s new in the market. Our main tools are:

  • Frontend: React/Redux/TS/Vanilla Extract/LESS/Dev Container with Vite
  • Backend: ASP.NET, C#, MSSQL, Elasticsearch
  • IDE: your choice - Rider, VS Code, or Visual Studio + Resharper
  • Cloud: Microsoft Azure
  • Foundational 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'll Need to Succeed

We are looking for a Shifter who is:

  • C# Expert: You have 2 to 6 years of experience in software development with a deep, production-level mastery of C# and .NET.
  • Fullstack-Capable: You are comfortable across the stack and have hands-on experience with React or modern JavaScript frameworks.
  • Architecturally Minded: You don’t just write code; you design scalable, maintainable systems and write clean, testable logic.
  • Growth-Oriented: You have a test-and-learn mindset, actively exploring new tools and frameworks to improve performance and quality.
  • Impact-Driven: You focus on outcomes over output, taking full ownership of your tasks from initial design to production monitoring.
  • Collaborative & Clear: You are a fluent English speaker who can explain technical trade-offs simply and partner effectively with cross-functional squads.
 
RECRUITMENT PROCESS
  • 30-minute video interview with our Talent Acquisition Specialist
  • 2x 1-hour technical interviews, one with a Backend dev and one with a Frontend dev
  • 1-hour final interview with the Hiring Manager

#LI-RH1 #LI-HYBRID 


To support our permanent, full time employees at every stage of their careers and lives, we provide a competitive total rewards and benefits package. Here are the global benefits we’d like to highlight:

  • Flexible remote and hybrid working options
  • Competitive Salary and a variable component tied to personal and company performance
  • Multiple Learning and Development opportunities, including Focus Fridays, a half-day each month to focus on learning and personal growth
  • Generous PTO and paid holidays
  • Mental health benefits 
  • 2 MAD Days per year (Make A Difference Days for paid volunteering)

Additional benefits may be offered by country, based on your eligibility - ask your recruiter for more information. Intern and Apprentice positions may receive some of these benefits - ask your recruiter for more details.

At Shift we strive to be a diverse and inclusive workforce. We welcome applications from and hire people who will contribute to the diversity of our company, without regard to race, color, religion, marital status, age, national or ethnic origin, physical or mental disability, medical condition, pregnancy, genetic information, gender identity or expression, sexual orientation, or other non-merit criteria.

Shift Technology is committed to providing reasonable accommodations for qualified individuals with disabilities in our application and employment process. Should you require accommodation, please email [email protected] and we will work with you to meet your accessibility needs.

Please be aware of scammers and only trust correspondence that comes from emails ending in "shift-technology.com". We will never do initial outreach to you via Whatsapp/Text/SMS, never ask for banking information or personal identification numbers (ex. Social Security Number) as part of our recruitment process.

Shift Technology does not accept unsolicited CVs from recruiters or employment agencies in response to the Shift Technology Careers page or a Shift Technology social media post. Any unsolicited CVs, including those submitted directly to hiring managers, are deemed to be the property of Shift Technology.

Skills Required

  • 2 to 4 years of experience in software development
  • Deep, production-level mastery of C# and .NET
  • Hands-on experience with React or modern JavaScript frameworks
  • Ability to design scalable, maintainable systems
  • Fluent English speaker
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The Company
HQ: Paris
559 Employees
Year Founded: 2013

What We Do

Shift Technology delivers AI decisioning solutions to benefit the global insurance industry and its customers. Our products enable insurers to automate and optimize decisions from underwriting to claims, resulting in superior customer experiences, increased operational efficiency, and reduced costs. The future of insurance starts with Decisions Made Better. Learn more at www.shift-technology.com

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