Senior Java Developer- Index Team

Whitesource

Poland Engineering
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Why Mend.io

We are redefining how modern organizations secure software from open source and custom code to AI-generated components. As the creators of the first AI Native AppSec Platform, we help global enterprises stay safe, fast, and compliant in an era of AI-driven development. Our platform combines intelligent automation, deep risk visibility, and developer-first experiences, shaping the future of application security.

We are also committed to building a collaborative, empowering workplace. If you are excited about this role but do not meet every requirement, we encourage you to apply. Your perspective could be exactly what we need!

Responsibilities

• System Architecture: Lead the design and development of scalable, high-performance backend systems from concept to deployment.

• Core Development: Develop solutions for processing, storing, and analysing data at scale.

• Infrastructure & Scaling: Optimize application performance and ensure the reliability of services running in a cloud-native environment.

• Data Management: Design and maintain complex databases, ensuring data integrity and query efficiency across relational and non-relational systems.

• Complex Integrations: Manage and implement multi-system integrations, handling high levels of complexity and technical interdependencies.

• Collaboration: Work closely with cross-functional teams to define project objectives and participate in rigorous code reviews to maintain high quality.

• Innovation: Stay current with emerging technologies and trends to ensure Mend.io remains at the forefront of the industry.

Must Have:

• 4+ years of experience with the Java language, including experience with multithreading, concurrency, and performance optimization,

• 6+ years of experience in software development,

• Experience with SQL backend, preferably PostgreSQL,

• Experience with Kafka/RabbitMQ,

• Experienced with AWS and CI/CD pipelines,

• Experience with AI tools (i.e. Cursor AI or Claude),

• Ability to take tasks from requirements to deployment quickly and independently,

• Ability to work within distributed, multidisciplinary teams,

• Design and build scalable, high-availability mission-critical systems and APIs,

• Experience with test-driven development.

Advantages:

• Understanding of what is an open-source supply chain,

• Experience with cybersecurity.

Our Culture

At Mend.io, we are leading the way in securing AI-powered applications, and we believe the best innovations come from teams where everyone feels valued. We are committed to a workplace built on respect, trust, and growth, where learning and flexibility empower people to do their best work.

Skills

JavaMultithreadingConcurrencyPerformance OptimizationSQL (PostgreSQL)Kafka/RabbitMQAWSCI/CD PipelinesCollaborationTest-Driven Development