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28Stone

Lead Java Developer

28Stone
Portugal · Full-time · Mid-Senior

At 28Stone, we specialize in delivering tailored software solutions for the financial services industry, working closely with major institutions in the US and UK to build high-performance systems for global capital markets. With over 200 professionals across North America and EMEA, we are a global IT consulting firm known for deep domain expertise and a focus on capital markets technology.

We offer a unique opportunity: the ability to work on international projects within a friendly and collaborative environment. Our teams support the development and delivery of technology that helps drive efficiency, performance, and scalability for some of the world's most advanced financial institutions.

Since 2023, through our strategic collaboration with Stark & Partners, we have expanded into Portugal by launching a Software Engineering Delivery Center using the B.O.T. (Build-Operate-Transfer) model. This center is a key part of our global delivery strategy, and we are continuing to grow sustainably by hiring talented engineers and consultants who are eager to contribute to complex, global financial systems.

We are proud to have received the Top 1% Workplace Award 2024 in the category. At 28Stone, we foster a culture of learning, openness, and collaboration - and we are always looking for positive, motivated individuals who want to grow their careers and make an impact through technology.

Join 28Stone in Portugal and be part of a team that connects local talent to the global financial technology landscape.

Your impact zone

  • Perform system design (High /low), Workflow diagrams and participate in design review sessions
  • Designing and writing clean and testable code
  • Effectively collaborating with the project team
  • Maintaining own productivity and aligning to project goals
  • Actively contributing to technical solution definition
  • Communicating with the client daily

Requirements

  • At least 5+ years of hands-on experience in developing enterprise applications using Java
  • Must have 5 plus years of Spring/Spring boot development experience
  • Experience in Camel
  • Threading/Concurrency, Collections, Exception Handling and other core java features
  • Experience in writing REST, Microservice & APIs- including performance, security, and error handling aspects
  • Good knowledge of SQL, entity relations (ORM) and writing queries
  • Decent knowledge in protocols - http/https, SSL, TCP and others
  • Good understanding of the CI/CD process
  • Build tools - Maven / Gradle
  • Version control - GIT (preferred) / SVN
  • Good written and spoken English communication skills (Communicate with international clients and colleagues)
  • Ability to work in a team and independently

Considered an advantage

  • Messaging experience (AMQ or Kafka)
  • Knowledge of cloud (Azure) and containers (OpenShift or similar)
  • Knowledge of Financial markets and Fixed income

Benefits

  • Hybrid & flexible work: Work remotely from anywhere in Portugal or from our co-working office in Leiria.(TECNEA Community).
  • Annual training budget: Invest in your growth with an allocated budget each year
  • Tech communities: Join a team that fosters knowledge sharing and mentorship
  • Loyalty rewards: Receive company-branded gifts on your work anniversaries
  • Modern office setup: Ergonomic and fully equipped workspace in Leiria
  • Additional office perks include free snacks, fresh fruits, tea and coffee, board games, a ping pong table, a spacious cafeteria, and free parking.
  • Social events: monthly lunches, team buildings, company-wide events
  • Coverflex: A flexible benefit for expenses like education, childcare, and sports

Compensation

Annual Gross EUR 50,000 - 70,000 EUR

We are flexible and use an individual approach with each candidate we meet, so we invite you to apply even if you do not meet some of the listed requirements.

Only candidates who have the right to work in Portugal are considered for this position.

The mentioned remuneration may vary depending on the candidate's skills, qualifications, and experience.

Key Skills

Ranked by relevance

gradle maven cloud java cicd git sql ssl
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Posted
Nov 19, 2025
Type
Full-time
Level
Mid-Senior
Location
Leiria
Company
28Stone

Industries

IT Services IT Consulting

Categories

Information Technology

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