Fullstack Java Developer

Lingaro; Polska; In loco; PLN 180.000 - 240.000; Tempo pieno

Vantaggi offerti da questo lavoro

Office as an option

Remote work option

Workation

Great Place to Work certified

Upskilling and training opportunities

Descrizione del lavoro

Lever, Inc. is seeking a skilled backend engineer to design, develop and maintain server-side logic for web applications. You will build React/Next.js based interfaces, design scalable APIs, and work with MySQL, PostgreSQL, or MongoDB databases. Cloud experience (AWS/Azure/GCP) and Docker help you excel in a fast-paced, remote-friendly environment.

You will collaborate with frontend, QA, and design teams, implement security best practices, and contribute to documentation and testing processes.

Competenze

• At least 4 years of backend development experience.
• Proficiency in Java server-side programming.
• Strong knowledge of React/Next.js core principles and related tooling.
• Experience with relational and NoSQL databases (MySQL, PostgreSQL, MongoDB).
• Experience building scalable web applications and APIs.

Mansioni

• Design, develop, and maintain server-side logic and APIs.
• Build React/Next.js based applications.
• Design and optimize database schemas for performance and scalability.
• Integrate third‑party APIs and develop internal APIs for frontend-backend communication.
• Implement security best practices and perform regular security audits.
• Optimize server-side code for speed and scalability; monitor and troubleshoot performance.
• Collaborate with frontend, UI/UX, and QA teams; maintain documentation.
• Use Git for version control and conduct thorough testing.

Conoscenze

Java backend

React/Next.js

English (B2)

Problem solving

Communication

Strumenti

MySQL

PostgreSQL

MongoDB

Docker

AWS

Azure

GCP

Node.js

Descrizione del lavoro

Growth through diversity, equity, and inclusion. As an ethical business, we do what is right — including ensuring equal opportunities and fostering a safe, respectful workplace for each of us. We believe diversity fuels both personal and business growth. We're committed to building an inclusive community where all our people thrive regardless of their backgrounds, identities, or other personal characteristics.

What You’ll Be Doing

• Designing, developing, and maintaining the server-side logic of web applications. Implementing scalable and efficient server-side components and APIs.
• Build React/Next.js based applications.
• Working with relational and/or NoSQL databases to store and retrieve data efficiently. Designing and optimizing database schemas for performance and scalability.
• Integrating third‑party APIs and web services to enhance application functionality. Developing custom APIs to facilitate communication between front‑end and back‑end systems.
• Implementing security best practices to protect against common web application vulnerabilities. Conducting regular security audits and implement necessary measures.
• Optimization: optimizing server‑side code for maximum speed and scalability. Monitoring and troubleshooting performance issues.
• Collaborating with front‑end developers, UI/UX designers, and other team members to ensure seamless integration of components.
• Using version control systems (e.g., Git) to manage and track changes to the codebase.
• Conducting thorough testing of server‑side components to identify and fix bugs.
• Collaborating with QA engineers for comprehensive testing.
• Clear and comprehensive documentation for back‑end systems and APIs.

What We’re Looking For

• At least 4 years of experience in a similar position.
• Proficiency in Java server‑side programming.
• Thorough understanding of React/Next.js core principles along with React router, hooks, Redux (or the like) workflows, Web performance and security.
• Experience with database systems (e.g., MySQL, PostgreSQL, MongoDB).
• Proven experience in back‑end development and building scalable web applications.
• Familiarity with cloud platforms (e.g., AWS, Azure, GCP) is a plus.
• Previous experience in Front‑end development with Docker is plus.
• Experience with NodeJS is a plus.
• Strong analytical and problem‑solving skills with attention to detail.
• Effective communication skills to collaborate with cross‑functional teams.
• Ability to adapt to changing project requirements and technologies.
• English at least B2.

Offer

• Stable employment.On the market since 2008, 1500+ talents currently on board in 7 global sites.
• “Office as an option” model.You can choose to work remotely or in the office.
• Workation.Enjoy working from inspiring locations in line with our workation policy.
• Great Place to Work® certified employer.
• Flexibility regarding working hours and your preferred form of contract.
• Comprehensive online onboarding program with a “Buddy” from day 1.
• Cooperation with top-tier engineers and experts.
• Unlimited access to the Udemylearning platformfrom day 1.
• Certificate training programs.Lingarians earn 500+ technology certificates yearly.
• Upskilling support.Capability development programs, Competency Centers, knowledge sharing sessions, community webinars, 110+ training opportunities yearly.
• Grow as we grow as a company.76% of our managers are internal promotions.
• A diverse, inclusive, and values-driven community.
• Autonomy to choose the way you work.We trust your ideas.
• Create our community together.Refer your friends to receive bonuses.
• Activities to support yourwell-being and health.
• Plenty of opportunities to donate to charities and support the environment.
• Modern office equipment. Purchased for you or available to borrow, depending on your location.