Senior Full-Stack Developer

Description de la mission

Senior Full-Stack Developer
Location: Esch Belval
Employment Type: Full-time
Experience Level: Senior
About Us:
We are an ambitious and fast-growing startup, working on building innovative digital solutions that make an impact. As a young company, we offer a unique opportunity to shape the future of our product, our technology, and our business. We are looking for a Senior Full-Stack Developer who is eager to wear multiple hats, take ownership of core features, and thrive in a dynamic, fast-paced startup environment.
Job Description:
We are searching for an experienced Senior Full-Stack Developer with deep expertise in Java, Spring Boot, VueJS, and MongoDB. This is not just a coding role — you will be a crucial part of our team, helping shape the architecture, technical decisions, and product vision. In a startup environment, your voice matters, and you’ll work closely with our small, tight-knit team to build scalable, high-performance web applications. If you’re excited about contributing to both the backend and frontend, enjoy tackling new challenges, and want to have a direct impact on the company’s growth, we’d love to talk!
Key Responsibilities:
Full-Stack Development: Own the development and deployment of end-to-end web applications, from the frontend interface to the backend architecture, using Java, Spring Boot, VueJS, and MongoDB.
Backend Development: Design and implement scalable, secure, and maintainable APIs and microservices with Spring Boot and Java, managing data efficiently with MongoDB.
Frontend Development: Build modern, responsive, and interactive web interfaces using VueJS, focusing on delivering a seamless user experience.
Startup Versatility: As part of a small team, you’ll need to be flexible and contribute to various areas — whether it’s brainstorming new features, debugging critical issues, or improving development workflows.
Product Ownership: Collaborate with the founder and the team to take ownership of key features and drive them from concept to delivery.
Architecture & Design: Play a pivotal role in designing system architecture, making technical decisions, and ensuring code quality across the stack.
Performance Optimization: Continuously improve application performance and scalability to handle growing user traffic.
Team Collaboration: Work closely with the product team to align on business needs and technical solutions, contributing to the overall product strategy.
Mentorship: As one of the senior developers, help guide and mentor more junior team members as the team grows.
Required Skills & Qualifications:
5+ years of experience as a Full-Stack Developer, ideally in a fast-paced startup or small team environment.
Expertise in Java and Spring Boot, with hands-on experience building production-grade web applications.
Strong experience with VueJS (or other modern frontend frameworks like React or Angular), building user-friendly interfaces.
Solid knowledge of MongoDB or other NoSQL databases, with experience in database design and query optimization.
Experience with RESTful APIs, microservices architecture, and server-side development.
Ability to work independently and manage multiple responsibilities in a fast-paced environment.
A proactive approach to problem-solving and the ability to quickly adapt to new challenges and technologies.
Strong understanding of HTML5, CSS3, and JavaScript/ES6.
Familiarity with version control (Git) and development workflows (CI/CD).
Agility: Comfortable working in an Agile environment, with a willingness to adapt to changing needs and priorities.
Startup Mentality: Excited to contribute ideas, iterate quickly, and take ownership of projects from start to finish.
Bonus Points For:
Experience with TypeScript in frontend development.
Knowledge of cloud platforms (AWS) or containerization tools (Docker, Kubernetes).
Interest in DevOps practices and infrastructure management.
Experience working in small, cross-functional teams in a startup environment.
Why Join Us:
Startup Culture: Be a part of a passionate, energetic team where your ideas and contributions will have a direct impact on the company’s growth and success.
Ownership & Impact: You’ll have the freedom to take ownership of projects and see them through from conception to deployment.
Innovation: Work on exciting, cutting-edge projects where innovation is encouraged.
Flexible Work Environment: We offer a flexible, dynamic work environment that fits your lifestyle, including the possibility of remote work.
Growth Opportunities: As an early member of our team, you’ll have significant opportunities to grow with the company, both personally and professionally.
Collaborative Team: Work directly with the founder and be part of shaping the future of the product and company.
An attractive salary with or without a company car
Description société
PayrollEngine is a provider of payroll calculation solutions for the Luxembourg market. We offer a powerful and flexible calculation engine designed to meet the specific needs of businesses in Luxembourg.
Our solution is available as a cloud or on-premise version, according to the client’s preferences, ensuring high availability, scalability, and automation of complex payroll processes, including retroactive calculations.
PayrollEngine is developed in partnership with Gumption, a group of IT companies, and Securex, a leading payroll calculation provider in Luxembourg.
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