Capital5mo ago

Java Software Engineer

Bulgaria·Sofia CityHybridmid

Java Software EngineerSoftware Engineering

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javakafkakubernetessqlci-cdcode-reviewconcurrencydistributed-systemsfintechnetworkingperformance-optimizationsecurity-best-practices

We are a leading trading platform that is expanding to the four corners of the globe. Our top-rated products have won prestigious industry awards for their cutting-edge technology and seamless client experience. We deliver only the best, so we are always in search of the best people to join our ever-growing talent team.

We are currently growing our Backend Team and looking for great Engineers with an interest in trading to join us! Our Engineering team plays a pivotal role in ensuring the robustness, speed, and security of our product. Dedicated to enhancing performance, providing a best-in-class user experience, ensuring compliance, and safeguarding data, the team's efforts directly impact our ability to offer clients a seamless and secure trading journey.

We believe great engineering talent not only delivers excellent code, but also lives our values. We are looking for someone who is eager to go fast, willing to innovate and grow, who knows how to listen, respect and support, strives to exceed client expectations, and takes full ownership to achieve real results.

Design and build scalable, low-latency, and high-performance backend services

Develop distributed and asynchronous systems ensuring reliability and fault tolerance

Optimise performance across JVM, databases, caching, and networking layers

Apply security best practices in handling client PII and financial transactions

Use event-driven architectures and modern messaging solutions (e.g. Kafka)

Collaborate with cross-functional teams to align architecture with business needs

Maintain high code quality through testing, code reviews, and CI/CD practices

Leverage AI tools to accelerate development, testing, and delivery

Strong understanding of distributed systems architecture and the client–server model

Ability to design and maintain scalable, low-latency, high-performance systems

Solid knowledge of concurrency, multithreading, and asynchronous programming

Awareness of security best practices in handling PII and financial transactions

Basic understanding of network protocols and troubleshooting

Experience working in a product-led fast-paced environment as a team player

Java and Spring: Advanced knowledge of Java Core technologies and the Spring framework

Data Mastery: Proficiency with SQL databases, ensuring optimal performance, structure, and replication

Concurrency & Async programming: advanced understanding and hands-on experience in asynchronous programming methods.

Events streaming: Understanding of the event driven architecture (Kafka or similar solutions).

Operational Proficiency: Understanding and hands-on experience with Ops activities, Kubernetes, pipelines, Fit Flow and modern CI/CD patterns and strategies

AI tools: ability to effectively use AI technologies in engineering work e.g. applying AI for coding assistance, debugging, testing, documentation, and optimisation of workflows

Communication: Effective communication skills, especially with teams responsible for security, operations and product

Analytical thinking: Ability to tackle and investigate complicated problems and convert it to the task

Adaptability to Rapid Changes: Demonstrated capability to adjust to quick technological shifts and evolving business requirements

Ownership and Accountability: Readiness to take ownership of tasks, issues as well as demonstrate accountability of the results and outcome

Proven experience in FinTech, Banking, or related financial domains

Performance: Knowledge of JVM performance optimization practices

No-SQL: Experience working with no-SQL databases is a big plus

In-memory storage: Strong knowledge of in-memory cache solutions

A competitive salary complemented by an annual performance-based bonus

A generous paid leave policy, supporting a healthy work–life balance

Two additional paid days per year dedicated to volunteering and giving back

Private medical insurance for your peace of mind