Jobs Companies iKnowHow S.A. Senior Java Developer

Sobre esta vaga de Senior Java Developer na iKnowHow S.A.

iKnowHow S.A. · Presencial · Nea Ionia, Attica, Greece

iKnowHow Group is a leading Software & Robotics Solutions group of companies operating internationally for over 24 years, with 300+ professionals delivering innovative technology solutions across Energy, Telecommunications, Banking & Financial Services, and Public Sector industries. The group is structured into specialized subsidiaries, each focused on distinct technology domains and market verticals.

iKnowHow S.A., as the cornerstone of the group, utilizes state-of-the-art technologies and handles end-to-end internal and external project development, from conception to completion. Our portfolio spans Data & AI platforms, enterprise integration, cloud-native applications, and digital transformation initiatives for major organizations in private and public sectors.

We are now looking for a Senior Java Developer with strong technical skills and solid working experience to work in outsourced challenging projects.

Responsibilities:

  • Design and build a centralized authorization system that governs identity validation and access decisions across the platform
  • Implement business policy and transaction controls in a way that keeps other services simple and decoupled from security logic
  • Ensure all security-relevant actions are logged, traceable, and auditable to meet enterprise compliance standards
  • Optimize the system for high-speed, low-latency decision-making at scale
  • Architect for high availability and resilience, ensuring the system keeps functioning during upstream outages
  • Build with regulatory compliance in mind, including data protection and financial-sector requirements
  • Work closely with architecture teams throughout the design and delivery process, from concept to implementation
  • Turn complex security requirements into clean, maintainable code
  • Uphold strong testing standards, particularly for security-critical functionality

Requirements

  • Bachelor's degree in Information Technology, Computer Science, Business Administration, Engineering, or a related field
  • 5+ years of hands-on Java development (newer versions)
  • Deep expertise in Spring Boot application development and auto-configuration
  • Hands-on experience implementing JWT-based stateless authentication, OAuth 2.1 / OIDC resource server configuration, filter chains, and method-level security
  • Practical experience writing aspects for cross-cutting concerns (authorization, auditing, masking)
  • Understanding of aggregates, domain services, repositories, and the importance of keeping domain objects free of infrastructure concerns
  • Experience in Spring Data Redis / Lettuce
  • Experience in JUnit 5, Mockito, Spring Boot Test or Test containers
  • Experience deploying stateless Spring Boot services on Kubernetes

Nice to have:

  • Experience with Open Policy Agent (OPA) or Drools BRMS
  • Familiarity with HashiCorp Vault and spring-vault-core
  • Knowledge of GDPR, DORA, or PSD2 in a technical context
  • Entra ID / Azure AD OIDC integration experience
  • Experience in core banking or financial services platforms
  • API Gateway (policy enforcement, coarse-grained AuthZ)

Benefits

  • An attractive salary package
  • Private health insurance plan
  • Career development and growth opportunities
  • Continuous training via personalized seminars
  • An amazing private & open-office workspace in Athens #LI_Hybrid
  • Flexibility to a remote work model as well
  • Stable and enjoyable working environment
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Sobre a iKnowHow S.A.

At IKH we solve hard problems. We provide custom-built automation solutions to industry and software solutions to the public and private sector. We can acquire your data, communicate, store and process it to produce insights and present them in a responsive and intuitive manner. Our tailor-made services culminate in cyber-physical systems where the physical and computational elements are intertwined to augment human capabilities.

Our mechanical and electrical engineers have brought to life close to twenty robotic solutions for the off-shore, oil & gas, nuclear, and the wind power industry. We have designed and engineered autonomous robots to perform ultrasonic testing of wind turbine blades or to replace tracked trenching machines operating in the subsea environment. More than 40 large scale web development and IT projects for private and public institutions, local subsidiaries of international organizations, and national authorities have been undertaken and successfully delivered by our software development teams.

Over the past six years, we have raised our sales six-fold and established offices in Luxembourg and London. Our headquarters are in downtown Athens (Neo Psyhiko) and our robotic team is headquartered in the outskirts of greater Athens.

At IKH we hire the best & brightest. We believe that talented individuals give credence to the maxim ‘the whole is greater than the sum of its parts’ and we strive to foster an environment where freedom, responsibility, innovation, and self-discipline flourishes. After all, a great workplace is synonymous to stunning colleagues, where employees don’t wait to be told what to do and behave like owners. Job candidates can seek for opportunities in four areas:

  • Robotics & IoT: A world-class team of electrical, mechanical, and software engineers with deep expertise in mechanical design and control, in data-driven intelligence, and in embedded systems. We design and engineer robotic solutions and our machines can sense, act, and adapt to demanding environments. We collaborate with our clients’ team, we ideate, we prototype and if need be we solicit funding from public or private sources.
  • The Digital Government team identifies, articulates, and analyzes business needs, translates them into specs, and implements fully the IT solution. We work with the private and public sector on process automation and optimization and on workflow and reporting solutions and when needed we apply advanced methodologies like lean and six sigma. We can engineer business intelligence and cognitive enterprise platforms to augment human decision making and we can ensure an organization’s Total Quality Compliance through an integrated and ISO-compliant management system.
  • EU Institutions Business Unit (EUI): Our Luxembourg office markets our digital government expertise primarily to EU institutions. Large government ought to adjust to and reap the benefits from the omni-channel, omni-content era. Our software development team has the experience and the caliber to help governments and international organizations embrace interoperability and openness and present their content in a device agnostic way.
  • Healthcare IT: evorad© is our RIS/PACS product suite. It is designed to cover a radiology department's needs from the moment the patients walk into the hospital until the moment they check out with a CD containing image files and their diagnostic report in hand. evorad© is the premier PACS solution of Greece’s National Health System and is used not only to process thousands of examinations daily but also as a teaching tool in most University Hospitals and Medical Schools. With over 10 years’ track record in the local market, evorad© has recently set up an office in Saudi Arabia with the mandate to market the PACS solution in the wider MENA region.

IKH is committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, and gender identity.

More information on our company can be found at http://www.iknowhow.com/ and at our YouTube channel.

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