Java Developer

Lingaro; Poland; On-site; PLN 60,000 - 100,000; Full time

Benefits offered by this job

Stable employment

Workation policy

Unlimited access to Udemy

Certificate training programs

Upskilling support

Diverse and inclusive community

Social fund benefits

Modern office equipment

Job summary

Lingaro is seeking an experienced Java Developer in Poland to design and maintain server-side logic for web applications. The role requires at least 4 years of Java development experience and proficiency in database systems such as MySQL and PostgreSQL. Candidates should be adaptable, possess strong problem-solving and communication skills, and have a good command of English. Lingaro, a Great Place to Work certified employer, offers a diverse and inclusive community where employees can grow through various learning opportunities and support programs.

Qualifications

• At least 4 years of experience as a Java Developer.
• Proficiency in Java server-side programming.
• Experience with database systems (e.g., MySQL, PostgreSQL, MongoDB).
• Proven experience in back-end development and building scalable web applications.
• Familiarity with cloud platforms (AWS, Azure, GCP) 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.

Responsibilities

• Design and maintain server-side logic for web applications.
• Implement scalable server-side components and APIs.
• Work with databases to store and retrieve data efficiently.
• Integrate third-party APIs to enhance application functionality.
• Implement security best practices for web applications.
• Conduct regular security audits and implement measures.
• Optimize server-side code for speed and scalability.
• Monitor and troubleshoot performance issues.
• Collaborate with front-end developers and UI/UX designers.
• Use version control systems to manage code changes.
• Conduct thorough testing of server-side components.
• Collaborate with QA engineers for comprehensive testing.
• Document back-end systems and APIs.

Skills

Java server-side programming

Back-end development

Database systems (MySQL, PostgreSQL, MongoDB)

Cloud platforms (AWS, Azure, GCP)

Analytical skills

Problem-solving skills

Effective communication

Adaptability

English (B2)

Job description

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.

Tasks:

Designing, developing, and maintaining the server‑side logic of web applications.

Implementing scalable and efficient server‑side components and APIs.

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 implementing necessary measures.

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.

Requirements:

At least 4 years of experience as Java Developer.

Proficiency in Java server‑side programming.

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.

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.

Missing one or two of these qualifications? We still want to hear from you! If you bring a positive mindset, we'll provide an environment where you feel valued and empowered to learn and grow.

We offer:

Stable employment. On the market since 2008, 1500+ talents currently on board in 7 global sites.

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 Udemy learning platform from 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 your well‑being and health.

Social fund benefits for everyone. AllLingarians can apply for social fund benefits, such as vacation co‑financing.

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.