Senior Software Engineer with Java

About the role

Aviva is hiring a (Senior) Software Engineer with Java for its Services Excellence Centre in Warsaw. You will build and support high-performance microservices and APIs that give secure access to enterprise operational data, using a cloud-native architecture. You will develop containerised services with Spring Boot and Python, and help set up reusable services and standards for enterprise-wide data consumption.

Key responsibilities

• Design, develop and maintain RESTful APIs, microservices and integration services.
• Build containerised applications with Spring Boot and/or Python.
• Develop secure, scalable and resilient API solutions supporting Operational Data Store access and integration.
• Build event-driven services and integrations with Kafka/MSK.
• Create reusable frameworks, service templates and integration patterns.
• Integrate with upstream and downstream systems using synchronous and asynchronous communication.
• Support API lifecycle management, including versioning, contracts and service reliability.
• Deploy and operate services on AWS ECS, supporting CI/CD and infrastructure automation.
• Implement monitoring, logging, observability and performance best practices.
• Collaborate with Architects, Data Engineers and Product Teams on technical design, documentation and Agile delivery.

Required profile

• Strong software engineering experience: senior level over 4 years, regular level over 3 years.
• Proven expertise in Java and Spring Boot.
• Experience building RESTful APIs and microservices.
• Knowledge of event-driven architectures and Kafka.
• Experience with AWS services including ECS, S3, Aurora/PostgreSQL and API integration services.
• Understanding of containerisation technologies.
• Experience with CI/CD pipelines and DevOps practices.
• Strong understanding of API security and authentication patterns.
• Experience with API design standards such as OpenAPI/Swagger.

Desirable

• Experience with Kong API Gateway or AWS API Gateway.
• Experience with Kafka/MSK and Python development.
• Knowledge of CDC and event sourcing patterns.
• Experience in insurance or financial services.
• Understanding of enterprise canonical data models.

What we offer

• Contract of employment and performance bonus.
• Private medical care, cafeteria-style benefits and employer-funded group insurance.
• Parental leave for the second parent, extra days off for birthdays and volunteering, and additional leave earned over the years.
• Wellbeing leave of two extra weeks after 10 years of service and psychological support consultations.
• Access to e-learning platforms, internal referral programme and hybrid working from Poland with a few days in the Warsaw office each month.
• Office at Gdański Business Center, Work Without Barriers entitlements and a Diversity Charter.