Senior Back End Developer

Mend.io

Senior Back End Developer responsible for backend systems development at Mend.io, an AI Native AppSec company. Leading design and collaboration on complex integrations in a cloud-native environment.

Posted 6/15/2026full-timeRemote • 🇵🇱 PolandSeniorWebsite

Tech Stack

Tools & technologies

AWSCloudJavaKafkaKubernetesMicroservicesMySQLPostgresSpringSwitching

About the role

Key responsibilities & impact

Lead the design and development of scalable, high-performance backend systems from concept to deployment.
Develop efficient and reliable backend services primarily using Java.
Optimize application performance and ensure the reliability of services running in a cloud-native environment.
Design and maintain complex databases, ensuring data integrity and query efficiency across relational and non-relational systems.
Manage and implement multi-system integrations, handling high levels of complexity and technical interdependencies.
Work closely with cross-functional teams to define project objectives and participate in rigorous code reviews to maintain high quality.
Stay current with emerging technologies and trends to ensure Mend.io remains at the forefront of the industry.

Requirements

What you’ll need

5 years of professional experience in back-end software development.
Advanced, deep-seated experience with Java and Spring development.
Proven experience working with queue infrastructure e.g. Kafka/ Rabbit, Kubernetes, and AWS.
Solid experience with PostgreSQL and/ or MySQL, including complex query optimization and schema design.
Demonstrated ability to work on complex, multi-integrated systems where context switching and managing various moving parts are daily requirements.
Strong analytical skills and a proven ability to solve intricate technical challenges.
Excellent interpersonal and communication skills to effectively collaborate across teams.
Familiarity with containerization and microservices architecture.
Being an adapter of AI tools and concept

Benefits

Comp & perks

Flexible working hours
Opportunity to work remotely
Professional development opportunities

ATS Keywords

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Hard Skills & Tools

JavaSpringPostgreSQLMySQLKafkaRabbitMQKubernetesAWSdatabase designquery optimization

Soft Skills

analytical skillsproblem-solvinginterpersonal skillscommunication skillscollaborationadaptability