Senior Java Developer

Komodo Consulting; Lisboa; Hybrid; EUR 70,000 - 90,000; Full time

Job summary

Komodo Consulting, a technology and strategy firm, seeks a Senior Java Backend Developer to own backend services and APIs across multi-country markets. You will collaborate with the Product Owner, design robust code, and drive testable solutions within an agile team.

The role covers system design, documentation, and CI/CD deployments, with a strong emphasis on modern tech like Kafka, Kubernetes, and cloud platforms. Hybrid Lisbon-area work is expected.

Qualifications

• Proven experience with mission-critical Java applications, particularly in the banking and finance sectors.
• In-depth understanding of the software development lifecycle and agile methodologies.
• Proficiency in relational databases and ACID properties.
• Hands-on experience with Apache Kafka fundamentals (offsets, partitions, consumer groups).
• Knowledge of observability tools such as Grafana, ELK, and Datadog.
• Experience with cloud platforms, containers, CI/CD pipelines, and DevOps practices.
• Strong knowledge of microservices architecture and asynchronous communication.
• Up-to-date with Kubernetes, Prometheus, AWS, NoSQL, and messaging systems.
• Excellent communication skills and the ability to mentor others.
• Strong problem-solving skills and continuous learning mindset.
• English C1

Responsibilities

• Develop and maintain backend services and APIs using Java and related technologies.
• Collaborate with the Product Owner to gather and refine requirements.
• Design and implement well-structured, testable, and efficient code to solve business needs.
• Create flowcharts, layouts, and documentation to support the development process.
• Develop unit, component, and integrated tests with the QA team.
• Deploy applications in a Continuous Integration (CI) platform.
• Test and document implemented solutions to ensure high quality and maintainability.
• Participate in code reviews and provide constructive feedback to teammates.
• Stay updated with industry trends and best practices in backend development.

Skills

Java backend

Banking/Finance domain

SDLC & Agile

Relational databases

Apache Kafka

Observability tools

Cloud platforms

Containerization & CI/CD

DevOps practices

Microservices

Kubernetes

Prometheus

AWS

NoSQL & messaging

English (C1)

Leadership & mentoring

Communication

Problem-solving

Tools

Kafka tooling

Grafana

ELK

Datadog

Job description

About us

Komodo Consulting is a technology and strategy firm specializing in Digital Transformation. Operating in Portugal and Poland, we provide IT Consulting & Nearshore services. We support both public and private sector organizations through two main areas:

• Consulting with a focus on strategy, investment analysis, and digital process improvement;

• IT Team Augmentation helping clients scale and strengthen their tech teams.

The project

As a Senior Java Backend Developer, you will work within an agile Software Development Team, responsible for the full lifecycle of an application.

You will scale the platform to meet the demands of several countries/markets, from developing flowcharts, layouts, and documentation to support the Product Owner with requirements and the team with solutions.

You will:

• Develop and maintain backend services and APIs using Java and related technologies.

• Collaborate with the Product Owner to gather and refine requirements.

• Design and implement well-structured, testable, and efficient code to solve business needs.

• Create flowcharts, layouts, and documentation to support the development process.

• Develop unit, component, and integrated tests in collaboration with the QA team.

• Deploy applications in a Continuous Integration (CI) platform.

• Test and document implemented solutions to ensure high quality and maintainability.

• Participate in code reviews and provide constructive feedback to team members.

• Stay updated with the latest industry trends and best practices in backend development.

You need to have the following skills:

• Proven experience with mission-critical Java applications, particularly in the banking and finance sectors.

• In-depth understanding of the software development lifecycle and agile methodologies.

• Proficiency in relational databases, including knowledge of indexes, optimization, and ACID properties.

• Hands-on experience with Apache Kafka, including detailed knowledge of offsets, brokers, partitions, and consumer groups.

• Familiarity with modern observability and monitoring tools such as Grafana, ELK stack, and Datadog.

• Experience with cloud platforms, containerization technologies, CI/CD pipelines, and DevOps practices.

• Strong knowledge of microservices architecture and asynchronous communication.

• Up-to-date with the latest industry trends and technologies, including Kubernetes, Prometheus, AWS, NoSQL databases, and messaging systems.

• Excellent communication skills and the ability to articulate technical concepts clearly.

• Leadership and mentorship abilities.

• Strong problem-solving skills, attention to detail, and a continuous learning mindset.

• English C1

Location

Lisbon, Coimbra, Porto or Braga(Hybrid - 2 times a week)