Senior Java Developer

Synechron is seeking a Senior Java Developer to join our team in NYC, NY / Dallas, TX (Need Onsite day 1, hybrid 3 days from office ) .

Our challenge

We are seeking a highly skilled Senior Java Developer to join our team. The ideal candidate will be a strong core Java developer with extensive experience in microservices, multithreading, Spring Boot, SQL, and large-scale databases. A background in financial services is highly preferred.

Responsibilities :

• Design, develop, test, and maintain robust Java applications and microservices that meet business requirements.
• Architect and implement scalable, high-performance microservices using Spring Boot and related technologies.
• Handle multi-threaded programming, concurrency control, and performance tuning to ensure low-latency, reliable systems.
• Collaborate with frontend, backend, and data teams to define APIs and data models; ensure secure, well-documented interfaces.
• Build and optimize SQL queries; work with large, complex databases and data structures.
• Implement CI / CD pipelines, code reviews, and automated testing to ensure quality and faster delivery.
• Participate in architectural discussions, provide technical leadership, and mentor junior developers.
• Adhere to best practices for security, reliability, and compliance within a financial services context.
• Troubleshoot production issues, perform root-cause analysis, and implement durable fixes.

Requirements :

Strong Core Java expertise (Java 8 / 11 / 17+ with a deep understanding of JVM internals, garbage collection, and performance tuning).

Microservices architecture experience; design and implement scalable services.

Multithreading and concurrency mastery; thread-safe programming and synchronization techniques.

Spring Framework; extensive experience with Spring Boot, Spring Data, Spring Cloud, and related ecosystems.

SQL proficiency with hands-on experience optimizing complex queries; familiarity with relational databases (e.g., Oracle, PostgreSQL, MS SQL).

Experience working with large databases and data warehousing concepts.

Financial services domain experience is highly preferred (trading, risk, settlements, market data, regulatory reporting, etc.).

Strong problem-solving skills, attention to detail, and the ability to work in a fast-paced environment.

Excellent communication and collaboration skills; comfortable in a multinational, matrixed environment.

Preferred, but not required :