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Java Backend Developer(No third party vendor pls)
Sidzen LLCAlpharetta, GA🇺🇸United StatesPosted 6 Aug 2026
Quick Overview
Work Type
Hybrid
Level
Mid Senior
Job Description
Key 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.
- 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.
Required Qualifications:
- Overall 8+ years of experience in IT is required
- 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.
Skills
Microservices
Oracle
SQL
Spring
Spring Boot
Java
PostgreSQL
SAFe
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