Senior Java Developer

2 semanas atrás

Lisboa, Lisboa, Portugal emagine Tempo inteiro

**Job Description:

Job Title: Senior Java Developer
Job Type: B2B Contract
Location: Lisbon, Portugal (Hybrid work - 3x week)
Duration: 12 months initial contract + extension
Summary**
The main function of the Senior Java Developer is to join a growing team in Lisbon, contributing to a mission-critical platform used in global financial operations. This role emphasizes strong core Java expertise, hands-on coding skills, and the ability to enhance the performance and reliability of a large-scale legacy system.

Responsibilities:

  • Develop and maintain Java-based backend services that implement complex business logic.
  • Work within a large, monolithic codebase (:2M lines), ensuring consistency, scalability, and performance.
  • Leverage strong knowledge of Core Java, multithreading, and concurrency to build efficient and robust applications.
  • Contribute to system design and code reviews within small, agile Scrum teams.
  • Write clean, testable, and maintainable code using object-oriented principles and test-driven development (TDD).
  • Investigate and improve performance of distributed and multi-threaded systems.
  • Participate in technical interviews and review take-home coding challenges.
  • Collaborate with other developers and DBAs to troubleshoot complex issues and optimize database interactions.
  • Engage in legacy modernization and long-term platform improvement efforts.
  • Adopt and promote engineering best practices and coding standards.

Key Requirements:

  • 3+ years of commercial software development experience, primarily using Java 8 or Java 17.
  • Excellent knowledge of Core Java, data structures, algorithms, and object-oriented design.
  • Hands-on experience with multithreading, concurrency, and performance optimization.
  • Proficiency with relational databases, including setup, tuning, and complex SQL queries.
  • Experience working with large-scale, legacy systems and monolithic architectures.
  • Comfortable working without modern frameworks like Spring Boot—focus is on pure Java development.
  • Familiarity with agile methodologies, especially Scrum, and working in small, collaborative teams.
  • Strong analytical and problem-solving skills.
  • Good communication and collaboration abilities in a hybrid work environment.

Nice to Have:

  • Experience with algorithmic problem-solving in production environments.
  • Exposure to Oracle/PostgreSQL performance tuning and advanced SQL.
  • Interest in legacy modernization and clean-up strategies.
  • Familiarity with CI/CD and automated testing tools (e.g., JUnit, Maven).

  • Java Developer Senior

    2 semanas atrás

    Lisboa, Lisboa, Portugal Fox IT Tempo inteiro

    A Fox IT é uma empresa de Consultoria Portuguesa que está pelo 4º ano consecutivo no TOP das 5% melhores PME´S em Portugal. A nossa Missão é trazer uma nova abordagem ao mercado das TI, promovendo uma troca mais justa entre nós, os nossos consultores e os nossos clientes.Procuramos um Senior Java Developer para reforçar a equipa do nosso...

  • Senior Java Developer

    Há 2 dias

    Lisboa, Lisboa, Portugal Nimber Tempo inteiro

    Olá Acredita que encontrou esta oportunidade por acaso? Nós, na Nimber, não acreditamos em acaso. Chamou a sua atenção? Ótimo. Continue a ler... Nós somos a Nimber, e não estamos apenas a preencher vagas; estamos a construir uma equipa pronta para transformar as coisas. Se está preparado para reescrever as regras e causar um impacto real, este é o...

  • Senior Java Backend Developer + Otel

    Há 4 dias

    Lisboa, Lisboa, Portugal Ankix Tempo inteiro

    Senior Java Backend Developer + OTEL Local: Praticamente remoto.O modelo surge como híbrido apenas porque, de forma pontual, poderá ser necessária presença em reuniões de alinhamento com o cliente ou participação em eventos específicos.A Ankix está a reforçar equipas de um cliente internacional no setor do retail, focado em produtos digitais de...

  • Senior Java Developer

    1 semana atrás

    Lisboa, Lisboa, Portugal emagine Tempo inteiro

    **Job Description:Job Title: Senior Java DeveloperJob Type: B2B ContractLocation: Lisbon, Portugal (Hybrid work - 2x week)Duration: 12 months initial contract + extension**Summary:The Senior Java Developer will play a crucial role in transitioning applications from on-premises infrastructure to the public cloud, significantly improving service speed and...

  • Senior Java Developer

    1 semana atrás

    Lisboa, Lisboa, Portugal Axians Tempo inteiro

    The world is more connected than ever before, and the pace of change is bewildering. We deliver the best combination of technology and services to enable our clients to fulfil the diverse needs of their customers. By fostering a deeply personal relationship with our clients, we want to improve the lives of people and organizations.Axians is the VINCI...

  • Senior Java Developer

    1 semana atrás

    Lisboa, Lisboa, Portugal Grupo Rumos Tempo inteiro

    Com mais de 30 anos de experiência, a Rumos Consulting atua na área da Consultoria em Tecnologias de Informação, entregando soluções nas áreas de Modern Workplace & Apps, Data, Analytics & Artificial Intelligence, Digital Business Automation, Enterprise Service Management, Digital Design Strategy & Marketing, Project Management Office, Workplace...

  • Senior Java Developer

    1 semana atrás

    Lisboa, Lisboa, Portugal Nimber Tempo inteiro

    Think you found this job by chance? Spoiler: you didnt. At Nimber, we dont believe in coincidences. Caught your eye? Great. Keep reading Were Nimber, and were not just filling positions were building teams that make a real impact. And this time, the mission is special: youll join Pictet Technologies, the tech hub of the Pictet Group, shaping the future since...

  • Senior Java Developer

    Há 2 dias

    Lisboa, Lisboa, Portugal Nimber Tempo inteiro

    Think you found this job by chance? Spoiler: you didnt. At Nimber, we dont believe in coincidences.Caught your eye? Great. Keep readingWere Nimber, and were not just filling positions were building teams that make a real impact. And this time, the mission is special: youll join Pictet Technologies, the tech hub of the Pictet Group, shaping the future since...

  • Senior Java Developer

    2 semanas atrás

    Lisboa, Lisboa, Portugal ITDS Tempo inteiro

    Join ITDS – A Leading Business Consultancy & IT Engineering FirmITDS is at the forefront of business consultancy and IT outsourcing, with offices in Amsterdam, Warsaw, Wroclaw, Lisbon, and Porto. Our team of 600+ experts blend deep industry experience with cutting-edge knowledge in technology, law, and digital marketing to help clients reach new heights.As...

  • Senior Java Developer

    1 semana atrás

    Lisboa, Lisboa, Portugal IRIUM Portugal Tempo inteiro

    At IRIUM  we want you to always chase your dreams. Here, prepare yourself to conquer your goals, while enjoying the journey. We are currently looking for Senior Java DeveloperRequirements: What We Are Looking For:A senior Java Developer with at least 5 years of experienceMandatory Requirements:Demonstrated expertise in building, shipping and supporting...