> Markdown version of [/jobs/ext/1937094-senior-java-developer](https://www.wearedevelopers.com/jobs/ext/1937094-senior-java-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Java Developer - **Company:** ApTask - **Location:** Alpharetta, GA, United States - **Experience:** Expert - **Salary:** $83,200.0 - $135,200.0 - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Adaptable Database Systems, Application Programming Interfaces (APIs), Amazon Web Services, Automation of Tests, Microsoft Azure, Big Data, Code Review, Computer Programming, Databases, Concurrency Controls, Continuous Integration, Data Security, Data Structures, Data Warehousing, Relational Databases, Database Queries, Java Virtual Machine (JVM), Spring Framework, PostgreSQL, Enterprise Messaging Systems, Microsoft SQL Server, Oracle (Applications), Performance Tuning, RabbitMQ, SQL Databases, Multithreading, Google Cloud, Java Application Server, Spring Cloud, Concurrency, Spring-boot, Backend, Spring Data, Event Driven Architecture, Kubernetes, Information Technology, Low Latency, Apache Kafka, Front End Software Development, Docker, Microservices - **Published:** August 5, 2026 - **Apply:** https://www2.jobdiva.com/portal/?a=4ujdnwqsdebu7m13em5f0pt5dw80o500d7dv9cbq5ebzngb7yk0n43mjtefnbx0d&compid=0/jobs/26618321#/jobs/26618321 ## About the Role * We are seeking a highly skilled Lead 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., * 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. Nice-to-Have: * 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. ## Description * 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. ## Related Videos - [Enterprise-Cloud-Native - Fast-Paced Development & Deployment in a Highly Secure Banking Environment](https://www.wearedevelopers.com/videos/671-enterprise-cloud-native-fast-paced-development-deployment-in-a-highly-secure-banking-environment) - [Beyond Kafka & RabbitMQ: Why NATS is the Future of Microservices Messaging](https://www.wearedevelopers.com/videos/1646-beyond-kafka-rabbitmq-why-nats-is-the-future-of-microservices-messaging) - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [Next Level Enterprise Architecture: Modular, Flexible, Scalable, Multichannel and AI-Ready?](https://www.wearedevelopers.com/videos/1017-next-level-enterprise-architecture-modular-flexible-scalable-multichannel-and-ai-ready) - [Why Systems Break After Initial Success: The Architectural Failures That Take Months to Surface](https://www.wearedevelopers.com/videos/2048-why-systems-break-after-initial-success-the-architectural-failures-that-take-months-to-surface) ## Related Articles - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [93 Java Interview Questions You Should Prepare For](https://www.wearedevelopers.com/magazine/14-93-java-interview-questions-you-should-prepare-for) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer) - [Find a Developer Job: 12 Best Job Sites For Developers](https://www.wearedevelopers.com/magazine/165-find-a-developer-job-12-best-job-sites-for-developers)