Senior Java Developer

New York City, NY - USA

Monthly Salary: Not Disclosed

Posted on: 18-10-2025

Vacancies: 1 Vacancy

Job Summary

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.

Experience with containers and orchestration (Docker Kubernetes).
Familiarity with messaging systems (Kafka RabbitMQ) and event-driven architectures.
Exposure to cloud platforms (AWS GCP Azure) and related security practices.
Knowledge of data security encryption and regulatory compliance in finance.
Certification or coursework related to Java Spring or financial technologies.

Preferred but not required:

Prior consulting or client-facing experience.
Contribution to open-source projects or internal tech communities.
Advanced degree in Computer Science Engineering or a related field

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 experien...

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

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.

Experience with containers and orchestration (Docker Kubernetes).
Familiarity with messaging systems (Kafka RabbitMQ) and event-driven architectures.
Exposure to cloud platforms (AWS GCP Azure) and related security practices.
Knowledge of data security encryption and regulatory compliance in finance.
Certification or coursework related to Java Spring or financial technologies.

Preferred but not required: