Hybrid Java Software Engineer

at Capital.com

• Job title: Java Software Engineer
• Job type: Full Time
• Experience level: Mid level, Senior
• Salary: Not specified
• Degree requirement: Bachelor's Degree
• Tech skills: Distributed Systems, Java, Kafka, Kubernetes, Spring, SQL
• Location requirements: Hybrid, Sofia City, Bulgaria

About the role

• Join a leading trading platform as a Java Software Engineer. Design and build high-performance backend services for financial applications.

Responsibilities

• 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

Requirements

• Proven experience in **FinTech, Banking, or related financial domains**
• 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
• Advanced knowledge of **Java Core technologies** and the Spring framework
• Proficiency with SQL databases, ensuring optimal performance, structure, and replication
• Understanding of the event driven architecture (Kafka or similar solutions).
• Understanding and hands-on experience with Ops activities, Kubernetes, pipelines, CI/CD patterns and strategies
• Ability to effectively use AI technologies in engineering work

Benefits

• Competitive salary and annual performance-based bonus
• Generous annual leave policy
• Health insurance and pension fund, with additional benefits depending on location
• Hybrid working model (3 days from office) or fully remote across the country of employment
• Workation policy (30 days remote from anywhere in the world)
• Two additional paid days per year dedicated to volunteering