Payroll Engine – Senior Full-Stack Developer

Description de la mission

Payroll Engine – Senior Full-Stack Developer
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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