Développeur Full Stack (C# / Javascript /English)
Mission.dev · Paris, Île-de-France, France
- Hybrid
- Full-time
- $90,000 / year
- Paris, Île-de-France, France
Job highlights
- Fullstack Engineer role with AI-focused insurance tech company.
- Design and implement core application features end-to-end.
- Build scalable systems automating complex decision-making processes.
- Collaborate with data scientists and product managers.
- Drive architectural improvements and modernization efforts.
About the role
About Mission.dev
Mission.dev is the next-gen staffing platform for software talent. We help you find, evaluate, and manage top software talent (contractors or direct hires) faster, smarter, and more efficiently. Powered by AI. Backed by real humans.About the client
This global technology firm provides an AI-native platform designed for the insurance industry. The platform automates and optimizes decision-making across the policy lifecycle, focusing on risk assessment, fraud management, and compliance. By leveraging specialized data science expertise, the company delivers explainable AI solutions that help major insurers and associations worldwide improve operational efficiency and payment integrity.About the Role
As a Fullstack Engineer, you will take ownership of the end-to-end design and implementation of core application features. You will be responsible for building scalable systems that automate complex decision-making processes within a high-performance environment. Working alongside data scientists, product managers, and designers, you will influence the technical evolution of the platform. This role offers the opportunity to drive architectural improvements and modernization efforts while ensuring the delivery of high-quality, maintainable code that directly impacts global industry operations.What You'll Do
- Design and implement intuitive user interfaces to facilitate data collection and review.
- Build and maintain robust APIs that automate complex decision-making workflows.
- Write, test, and deliver clean, maintainable code using automated testing frameworks from unit to end-to-end.
- Manage the full software development lifecycle, including releases, deployments, and production monitoring.
- Execute technical migrations and architectural improvements to modernize evolving platforms.
- Collaborate with cross-functional teams to refine agile development processes through continuous feedback.
- Optimize system performance and scalability to handle high-volume data and user interactions.
What You Bring
- 2 to 5 years of professional experience in software development.
- Strong proficiency in backend development with C#.
- Hands-on experience with frontend JavaScript frameworks.
- Proven ability to deliver clean, well-architected code.
- Professional fluency in English.
- Based in a EU company.
Nice to Have
- Experience with React, Redux, and TypeScript.
- Knowledge of ASP.NET and Microsoft Azure cloud environments.
- Familiarity with MSSQL and Elasticsearch.
- Experience using CI/CD tools such as GitHub Actions, TeamCity, or Octopus.
- Exposure to Cypress for end-to-end testing.
Key skills/competency
Fullstack Engineer, C#, Javascript, Frontend Development, Backend Development, API Design, Software Development Lifecycle, Agile Methodologies, System Performance Optimization, Cross-functional Collaboration.Skills & topics
- Fullstack Engineer
- C#
- Javascript
- Software Development
- Backend Development
- Frontend Development
- API
- Remote
- Contractor
- EU Based
How to get hired
- Tailor your resume: Highlight C# backend and JavaScript frontend experience. Quantify achievements in software development.
- Showcase your portfolio: Link to GitHub or projects demonstrating clean, well-architected code and full-stack capabilities.
- Prepare for technical interviews: Be ready to discuss C# best practices, JavaScript frameworks, API design, and testing strategies.
- Emphasize collaboration: Highlight experience working with cross-functional teams and your ability to improve agile processes.
- Confirm EU residency: Ensure your application clearly states your EU company base for this remote role.
Technical preparation
Master C# for backend logic and APIs.,Practice frontend JavaScript frameworks like React.,Understand API design and RESTful principles.,Prepare for coding tests on algorithms and data structures.
Behavioral questions
Describe a complex system you designed.,How do you ensure code quality and maintainability?,Share an experience improving agile processes.,How do you handle optimizing system performance?
Frequently asked questions
- What is the work arrangement for the Fullstack Engineer role at Mission.dev?
- This is a fully remote, full-time contractor role (40 hours/week) at Mission.dev. While remote, candidates based in Paris, France, or another EU country are preferred.
- What specific technologies are crucial for this Fullstack Engineer position?
- Strong proficiency in C# for backend development and hands-on experience with frontend JavaScript frameworks are essential. Experience with React, Redux, and TypeScript are considered a plus.
- What kind of projects will a Fullstack Engineer work on with Mission.dev's client?
- You will work on an AI-native platform for the insurance industry, automating and optimizing decision-making across the policy lifecycle, focusing on risk assessment and fraud management.
- What is the expected level of experience for this Fullstack Engineer job?
- The role requires 2 to 5 years of professional experience in software development, with a proven ability to deliver clean, well-architected code.
- Does this Fullstack Engineer role require fluency in any specific languages?
- Yes, professional fluency in English is required for this position. Your ability to communicate effectively in English is a key requirement.
- What are the benefits of working as a Fullstack Engineer for Mission.dev's client?
- You'll have the opportunity to drive architectural improvements and modernization efforts on a cutting-edge AI platform, impacting global insurance operations and gaining experience in a high-performance environment.
- Are there any specific cloud or database technologies that are beneficial for this role?
- While not strictly required, knowledge of ASP.NET, Microsoft Azure cloud environments, MSSQL, and Elasticsearch are considered nice to have for this Fullstack Engineer position.