Principal Java Backend Engineer

We are looking for a Principal Java Backend Engineer to lead the design and delivery of scalable, integration-heavy backend systems. This role requires a hands-on technical leader who can unblock teams, influence stakeholders, and collaborate directly with client engineering teams to drive solutions.

You will operate at a Principal Engineer level, balancing architecture leadership with hands-on development.

Technical Leadership

• Lead architecture and design of domain services and integration-heavy systems.
• Act as a technical escalation point to unblock teams and resolve complex challenges.
• Drive best practices in microservices, event-driven architecture, and API design.
• Ensure systems are scalable, resilient, and cloud-native.

Hands-On Engineering

• Develop backend services using Java (11+), Spring Boot, and Micronaut (preferred).
• Build and maintain event-driven systems using Kafka.
• Design and implement GraphQL federation and REST APIs.
• Work with MongoDB for high-volume, distributed data workloads.

Cloud & Integration

• Implement solutions using Azure services including:
• Azure Logic Apps
• Azure Key Vault
• Design secure, integration-focused workflows across systems.

Stakeholder & Client Collaboration

• Partner with client teams to solve technical blockers and drive delivery.
• Influence architectural decisions across teams.
• Provide technical mentorship and guidance to engineers.

Required Skills & Experience

Core Technologies

• Java 11+ (Java 17/21 preferred)
• Spring Boot & Microservices
• Kafka & Event-Driven Architecture
• MongoDB & distributed data design
• REST APIs & GraphQL Federation
• Gradle build system
• Unit testing with JUnit & Mockito

Cloud & Integration

• Microsoft Azure (mandatory)
• Azure Logic Apps
• Azure Key Vault
• Experience designing secure integrations

Architecture & Engineering Practices

• Domain-driven design
• Integration-heavy systems
• Performance tuning & scalability
• Observability & resilience patterns

Desired Skills

• Micronaut framework experience
• Retail or enterprise-scale system experience
• Multi-cloud exposure (Azure + AWS)

Leadership & Behavioral Expectations

• Strong influencing and stakeholder management skills.
• Ability to unblock teams and drive decisions.
• Excellent communication with technical and non-technical stakeholders.
• Hands-on leadership mindset.

We Offer

• Competitive salary
• Annual bonus, subject to company performance
• Access to Udemy online training and opportunities to learn and grow within the role

About Mindera

At Mindera we use technology to build products we are proud of, with people we love.

Software Engineering Applications, including Web and Mobile, are at the core of what we do at Mindera.

We partner with our clients, to understand their product and deliver high performance, resilient and scalable software systems that create an impact in their users and businesses across the world.

You get to work with a bunch of great people, where the whole team owns the project together.

Our culture reflects our lean and self-organisation attitude. We encourage our colleagues to take risks, make decisions, work in a collaborative way and talk to everyone to enhance communication.

We are proud of our work and we love to learn all and everything while navigating through an Agile, Lean and collaborative environment.

Follow our Linkedln page - https://tinyurl.com/minderaindia

Check ot our Blog: http://mindera.com/ and our Handbook: http://bit.ly/MinderaHandbook

Our offices are located: Aveiro, Portugal | Porto, Portugal | Leicester, UK | San Diego, USA | San Francisco, USA | Chennai, India | Bengaluru, India