Java Developer

Match Profiler is an Information Systems consultant who has been working in the national and international market since 1999. We have multidisciplinary skills and IT know-how that allow us to contribute, optimize and progress with our clients. We are currently recruiting, for integration in our internal team/client, professionals with the following profile:

Java Developer - Hybrid (Lisbon - 2 days/week)

Hard skills

We are looking for a Java Developer to join a high-performance team working on high-load systems with millions of transactions per day. The role requires designing and implementing performant, low-latency applications, while working in a fast-paced hybrid environment.

This position is open to junior developers (1–2 years of experience) with strong mathematical and algorithmic skills, as well as to senior developers with proven experience in designing high-load systems.

Requirements:

• Experience: 1–2 years (Junior) or several years (Senior) in Java development.
• Education: M.Sc. in Computer Science (Junior) or equivalent professional experience (Senior).
• Strong foundation in data structures, algorithms, and mathematics.
• Experience in high-load, low-latency systems is a plus (e.g., banking, FX, gaming, Internet marketing).
• Proficiency in Java (C++ or other compiled high-performance languages are a plus).
• Ability to write performant, optimized, and well-structured code.
• English: B2 minimum.

Nice-to-have:

• Junior profile: Hackathon or Olympiad participation demonstrating problem-solving skills.
• Knowledge of multi-threading, concurrency, and system-level optimization.
• Experience with profiling and performance tuning tools.
• Familiarity with financial systems (FX, banking) or other high-load domains.

Responsibilities:

• Assess the current environment (on-prem infrastructure, servers, applications, dependencies, network, storage, databases) to define the migration plan.
• Perform discovery and dependency analysis across applications, services, and data.
• Select the most appropriate migration strategy (lift & shift, refactor, rearchitect, rebuild).
• Design the target Azure architecture: networking, identity, security, virtual machines, storage, high availability, disaster recovery (DR).
• Use Microsoft migration tools (e.g. Azure Migrate, Azure Site Recovery, Database Migration Service) or third-party tools.
• Develop automation and Infrastructure as Code (IaC) for provisioning (Terraform, ARM, Bicep, PowerShell / Azure CLI scripts).
• Plan and execute migration tests / pilot runs to validate functionality prior to full cutover.
• Manage cut-over, data migration, synchronization, and minimize downtime.
• Post-migration: monitor performance, optimize cost, ensure security, compliance, and make necessary adjustments.
• Document every stage of the project, prepare runbooks / playbooks / rollback plans.
• Coordinate with cross-functional teams (infrastructure, networking, security, applications, business) and manage project stakeholders.

Soft skills

• Good communication
• Team spirit
• Proactivity
• Time management

What we can offer

• Personalized support from your team
• Your manager will take into consideration your motivations and suggestions
• Victories will be celebrated together
• Your HR and Support Teams will always be available to help
• Constant feedback on your work
• A network of hundreds of partnerships with companies from numerous sectors that offer you exclusive discounts (health, well-being, travel, gastronomy, culture, leisure, training, etc)
• And, of course, many gatherings and social events