Lingaro Group
Posted 6mo ago

Java Developer

Lingaro Group
Poland
RemoteFull Time
Responsibilities
  • Develop server-side
  • Database design
  • API integration
Requirements
  • 4+ years Java server-side development
  • Databases (MySQL, PostgreSQL, MongoDB)
  • Cloud familiarity (AWS/Azure/GCP)
  • Strong problem-solving and collaboration
  • English level B2
Technical tools mentioned
JavaMySQLPostgreSQLMongoDBAWSAzureGCPGit

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.


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.


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. 
  • 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 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.


  • 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 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.
  • 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.

  • About Lingaro Group

    Provides data and AI services to global enterprises.

    Similar jobs

    Java Developer roles
    13h
    Save
    Mark Applied
    Hide
    Lead / Senior Java Developer (Warszawa, PL)
    Warsaw, Masovian Voivodeship, Poland
    HybridFull Time
    Standard Chartered
    Standard CharteredLondon Stock Exchange: STAN: Multinational banking and financial services.
    7+ YOE7+ years of relevant experience; expertise in Core Java, Spring, RX Java, REST, reactive web services, microservices, containers, distributed systems, and CI/CD. Bachelor's degree in computer science or software engineering required.
    Java, Spring Framework, RxJava, REST, Reactive Web Services, Kubernetes, OpenShift, Helm, Docker, Azure DevOps, SQL, Oracle, Hazelcast, Kafka, Solace
    14h
    Save
    Mark Applied
    Hide
    EY GDS Poland NextGen Talent Internship - Junior Java Engineer with German (Katowice, Śląskie, PL, 40-202)
    Katowice, Silesian Voivodeship, Poland
    HybridFull Time, Internship
    EY
    EY: Provides audit, tax, consulting, and strategy services globally.
    Java or Guidewire development experience; familiarity with JVM technologies, coding practices, and strong communication. English required; German required; Angular 5 and Kotlin are advantageous.
    Java, Guidewire, JVM, Java 8, J2EE, XML, SOAP, REST, SQL, PL/SQL, Spring, Hibernate, Application Server, Enterprise Messaging System, Angular 5, Kotlin, Azure AI-900, Microsoft Azure AI Fundamentals
    19h
    Save
    Mark Applied
    Hide
    Senior Java Engineer
    Poland
    RemoteContract
    RE Partners
    RE Partners: Providing technology consulting and digital transformation services for enterprise clients.
    Deep data structures and algorithms knowledge; advanced Java concurrency, JVM, and JMM skills; streaming architectures; Kubernetes; Kafka or RabbitMQ; Docker; cloud; MongoDB; and Java troubleshooting experience.
    Java, Kafka, Oracle, MongoDB, Kubernetes, RabbitMQ, Docker, OpenShift, Solace, JVM, JMM
    19h
    Save
    Mark Applied
    Hide
    Senior Java Engineer
    Poland
    RemoteFull Time
    EPAM Systems
    EPAM SystemsNYSE: EPAM: Provides global digital platform engineering and software development services.
    5+ YOERequires 5+ years of core Java development, AWS services, Java 21/25, Spring Boot, Spring AI, AI agent development, LLM prompting, English B2+, and proactive independent work.
    Java, Amazon Web Services, Amazon EKS, AWS Lambda, Amazon DocumentDB, Amazon S3, Amazon Bedrock, Amazon EC2, AWS Step Functions, Java 21, Java 25, Spring Boot, Spring AI, Large Language Model (LLM) prompting, Agent Development Kit
    19h
    Save
    Mark Applied
    Hide
    Senior Java Developer (Keycloak)
    Katowice, Silesian Voivodeship, Poland
    HybridFull Time, Temporary
    Vaillant Group
    Vaillant Group: Provides sustainable heating, cooling, and hot water solutions.
    5+ YOEComputer Science degree or equivalent, 5+ years of software development, Java web services with JEE and Spring, REST, Keycloak, OAuth, OpenID Connect, and fluent English.
    Java, JEE, Spring, REST, Keycloak, OAuth, OpenID Connect, Kotlin, Kubernetes, GitOps, CI/CD
    19h
    Save
    Mark Applied
    Hide
    Java Developer
    Warsaw, Masovian Voivodeship, Poland
    HybridFull Time
    Accenture
    AccentureNYSE: ACN: Global professional services firm providing consulting and technology solutions.
    4+ YOEAt least 4 years of commercial JVM experience; Spring ecosystem, automated testing, databases, SQL, REST APIs, CI/CD, Docker, Kubernetes familiarity, and fluent Polish and English required.
    Java, Kotlin, Spring, Spring Boot, Hibernate, JUnit, JMockit, Cucumber, SQL, REST, Jenkins, GitCI, Maven, Nexus, SonarQube, Git, Docker, Kubernetes, GH Copilot, Claude Code, Apache Kafka, AWS, GCP, Azure, Prometheus, Grafana, Dynatrace, ELK Stack, Spring Cloud, Big Data, AI, BDD, TDD
    20h
    Save
    Mark Applied
    Hide
    Senior Java Developer
    Warsaw, Masovian Voivodeship, Poland
    HybridFull Time
    Sigma Software
    Sigma Software: Global IT services provider offering custom software development and consulting.
    5+ YOE5+ years of Java and Spring Boot experience; strong MySQL and Kafka skills; microservices and high-load systems experience; Kotlin experience; English proficiency at C1 level.
    Java, Spring Boot, MySQL, Kafka, Kotlin
    1d
    Save
    Mark Applied
    Hide
    Senior Java Engineer – High-Load & Real-Time Systems
    Poland
    RemoteFull Time
    Avenga
    Avenga: Provides custom software engineering and digital transformation services.
    5+ YOE5+ years of Java backend experience; Java 11+, concurrency, multithreading, asynchronous programming, distributed systems, algorithms, performance optimization, Kafka, scalability, and B2+ English.
    Java, Java 11, CompletableFuture, Kafka, SQL, NoSQL, AWS